SERVICE LETTER. REASON To transmit the 12 Pratt & Whitney Canada (P&WC) service documents that follow:

Transcription

1 Caravan SERVICE LETTER CAL TITLE POWER PLANT - TRANSMITTAL OF P&WC S.I.L. NO. PT6A-196R1, S.I.L. NO. GEN-123R2, S.I.L. NO. GEN-134, PT6A SPB NO. 185, PT6A SPB NO. 186, S.B. NO. 1002R29, S.B. NO. 1455R3, S.B. NO. 1521R5, S.B. NO. 1568R7, S.B. NO. 1588R2, S.B. NO. 1731, S.B. NO EFFECTIVITY 208 and 208B Airplanes REASON To transmit the 12 Pratt & Whitney Canada (P&WC) service documents that follow: Service Information Letter S.I.L NO. PT6A-196R1, Removal of HTS oils from the approved listing of lubricating oils Service Information Letter S.I.L NO. GEN-123R2, Qualified Engine Oil Analysis Laboratory List Service Information Letter S.I.L NO. GEN-134, Technical Publication Revision Status Spare Parts Bulletin PT6A SPB No. 185, FUEL FILTER REPLACEMENT PARTS KIT - REPLACEMENT OF Spare Parts Bulletin PT6A SPB No. 186, METAL SHIPPING CONTAINER - INTRODUCTION OF Service Bulletin P&WC S.B. No. 1002R29, ROTOR COMPONENTS - SERVICE LIFE Service Bulletin P&WC S.B. No. 1455R3, COMPRESSOR TURBINE BLADE - REPLACEMENT OF Service Bulletin P&WC S.B. No. 1521R5, COMPRESSOR TURBINE DISK BALANCING ASSEMBLY AND BLADES - REPLACEMENT/MODIFICATION OF Service Bulletin P&WC S.B. No. 1568R7, FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF Service Bulletin P&WC S.B. No. 1588R2, COMPRESSOR BLEED OFF VALVE - REPLACEMENT OF Service Bulletin P&WC S.B. No. 1731, ACCESSORY GEARBOX (AGB) HOUSING ASSEMBLY - REPLACEMENT OF Service Bulletin P&WC S.B. No. 1733, TORQUE LIMITER- INSPECTION OF. DESCRIPTION Cessna Aircraft Company wishes to transmit these 12 P&WC service documents as information for model 208/208B airplane owners. COMPLIANCE INFORMATIONAL. This service letter is for informational purposes only. LABOR HOURS Not applicable MATERIAL AVAILABILITY Not applicable REFERENCES Refer to the 12 P&WC service documents that are attached to this service letter. CAL March 26, 2014 Page 1 of 1 Cessna Aircraft Company, Cessna Customer Service, P.O. Box 7706, Wichita, KS 67277, U.S.A This document contains technical data and is subject to U.S. export regulations. This information has been exported from the United States in accordance with export administration regulations. Diversion contrary to U.S. law is prohibited. ECCN: 9E991 COPYRIGHT 2014

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3 SERVICE INFORMATION LETTER S.I.L NO. PT6A-196 R1 Subject: Applicability: Removal of HTS oils from the approved listing of lubricating oils. All PT6A engines This Service Information Letter (SIL) is issued to notify operators that effective March 20 th, 2014, HTS oils will no longer be approved for use in PT6A engines. A lead time of three months is provided in order to give a time period to operators for conversion of oil type, if applicable, in their engines. Analysis has indicated that long term interaction of HTS oils with the fluorocarbon-based elastomeric material AMS7276 (Viton A) at higher oil temperatures may increase the rate of seal degradation, which can result in oil leakage. It is based on this determination that HTS oils use is no longer recommended, and therefore, conversion to another oil type is required. Customer who would experience AGB lip seal degradation due to prior use of HTS oils will be covered by P&WC warranty. The recommended oil change procedure is by attrition (oil top up method) as described in the applicable turboprop engine approved listing of lubricating oils Service Bulletins. Yours truly, PRATT & WHITNEY CANADA Corp. David Meisels Manager, PT6A Customer Engineering Customer Service This Service Information Letter is valid until superseded by revision or cancellation. EXPORT CONTROL CLASSIFICATION: This document does not contain technical data ISSUED: July 11 th 2012 Revised: December 10th 2013 Page 1 of 1 PRATT & WHITNEY CANADA CORP. MARIE-VICTORIN, LONGUEUIL QUEBEC, CANADA J4G 1A1 PRINTED IN CANADA

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5 S.I.L NO. GEN-123R2 SERVICE INFORMATION LETTER Subject : Qualified Engine Oil Analysis Laboratory List Applicability : All Engine Models Pratt & Whitney Canada Corp. (P&WC) wishes to provide operators and maintainers of P&WC engines the following list of qualified laboratories for purposes of engine oil sample analyses. Region : Americas Analysts, Inc Martin Farm Road, Suwanee, GA Atlanta, Georgia, USA TEL FAX WEBSITE: Aviation Laboratories Inc. New Orleans International Airport 910 Maria Street Kenner, LA USA TEL: (504) FAX: (504) : vicari@avlab.com 2:sghitterman@avlab.com WEBSITE: Aviation Laboratories Inc. Corporate Headquarters 5401 Mitchelldale #B6 Houston TX USA TEL: (713) FAX: (713) WEBSITE: Jet-Care International Inc. 3 Saddle Road Cedar Knolls NJ USA TEL: 877 JET-CARE TEL: (973) FAX: (973) WEBSITE: This Service Information Letter is valid until cancelled or superseded by revision. EXPORT CONTROL CLASSIFICATION: This document does not contain technical data. ISSUED: Jan 21/2013 REVISION: Dec 09/2013 Page 1 of 5 PRATT & WHITNEY CANADA CORP. MARIE-VICTORIN, LONGUEUIL QUEBEC, CANADA J4G 1A1 PRINTED IN CANADA

6 PRATT & WHITNEY CANADA SERVICE INFORMATION LETTER PWC: SIL GEN-123R2 Region : Americas (Continued) Martel Laboratories JDS Inc. Petroleum Laboratory Services 1025 Cromwell Bridge Road Baltimore, MD USA TEL: (410) FAX: (410) martel@martellabs.com WEBSITE: Martel Laboratory Services Inc. Aero Services Building Capital Airport Spring field, IL USA TEL: (217) FAX: (217) WEBSITE: Martel Laboratories JDS Inc. Petroleum Laboratory Services 1438 E Samgamon Ave. Springfield, IL USA TEL: (217) FAX: (217) WEBSITE: Predictive Maintenance Corporation 8330 Décarie Boulevard, Montréal, Quebec, Canada H4P 2P5 TOLL FREE TEST (8378) WEBSITE: Metro Tech Systems Ltd. Bay th Street N.E Calgary. Alberta T2E 7G9, Canada TEL: (403) FAX: (403) info@metrotechsystems.ca WEBSITE: Skywatch Service of Analysts, Inc Cornors North Court NW Norcross, GA USA TEL: (770) FAX: (404) WearCheck Canada Inc. C Appleby Line Burlington, ON L7L 5H9 Canada TEL: +1 (905) FAX: +1 (905) billq@wearcheck.ca WEBSITE: EXPORT CONTROL CLASSIFICATION: This document does not contain technical data. ISSUED: Jan 21/2013 REVISION: Dec 09/2013 Page 2 of 5

7 PRATT & WHITNEY CANADA SERVICE INFORMATION LETTER PWC: SIL GEN-123R2 Region: Asia & Australia All Nippon Airways Co., Ltd Haneda Airport Ota-ku Tokyo Japan TEL: FAX: Det Norske Veritas Pte. Ltd 10 Science Park Drive DNV Technology Center Singapore TEL: FAX: WEBSITE: Qantas NDT Section Qantas Engineering Melbourne Maintenance Base Operations Road Tullamarine Victoria 3043 Australia TEL: FAX: WEBSITE: Xi an Aero Engine Corp. Physic and Chemical Testing Centre Xujiawan Beijiao P.O Box 13-88, Xi an Peoples Republic of China TEL: FAX: WEBSITE: Aviation Safety Institute Technology Lab. (Center of Aviation Safety Technology) General Civil Aviation Administration of China Building 24 Jia, Xibahe Beili, Chaoyang District, Beijing P.R. China TEL: , FAX: , : 2: WEBSITE: Materials Research Laboratories Industrial Technology Research Institute 321 Kuang Fu Road Section 2. Hsinchu Taiwan TEL: (886) FAX: (886) WEBSITE: Setsco Services Pte, Ltd. 18 Teban Gardens Cresent Singapore TEL: FAX: WEBSITE: Xi an High-Tech Physical Chemical Co. Ltd Testing Center 8 Guangde Road Xi an High Tech Development Zone, Peoples Republic of China TEL: & FAX: market@xagklh.com WEBSITE: EXPORT CONTROL CLASSIFICATION: This document does not contain technical data. ISSUED: Jan 21/2013 REVISION: Dec 09/2013 Page 3 of 5

8 PRATT & WHITNEY CANADA SERVICE INFORMATION LETTER PWC: SIL GEN-123R2 Region: Asia & Australia (Continued) Japan Airlines Co., Ltd. Dept: Marketing & Sales Department, Engineering & Maintenance M1 Bldg Haneda Airport, Ota-ku, Tokyo Japan Tel : Fax : org.tyojcz_jali@jal.com Region: Europe AVIO Spa Laboratory 80038, Pomigliano D Arco Napoli, Italy TEL: FAX: renato.festa@aviogroup.com WEBSITE: PCAS (Produits Chimiques Auxiliaires et Syntheses) Zone Industrielle de la vigne aux Loups 23 Rue Bosselet Long-Jumeau France TEL: FAX: alain.kohn@sqs.com WEBSITE: SN Brussels Building International Airport Brussels, 1930 Zaventem Belgium TEL: (32) FAX: (32) WEBSITE: Lufthansa Technik AG Weg Beim Jaeger Dept: HAM/TQ/MWR123 D Hamburg Germany TEL: (49) FAX: (48) ITS Testing Sevices (UK) Ltd Intertek Farnborough Cody technology Park Fuels and Lubricants centre Room 1068 Bldg A7 Cody Technology Park Farnborough GU14 0LX Direct: +44 (0) Mob: +44 (0) E mail: robert.chapman@intertek.com Spectro Oil Analysis Company Ltd. Palace Gate High Street Odiham, Hampshire RG29 1NP United Kingdom TEL: FAX: AOG: +44 (0) (24 Hours) enquires@spectro-oil.com WEBSITE: EXPORT CONTROL CLASSIFICATION: This document does not contain technical data. ISSUED: Jan 21/2013 REVISION: Dec 09/2013 Page 4 of 5

9 PRATT & WHITNEY CANADA SERVICE INFORMATION LETTER PWC: SIL GEN-123R2 Region: Europe (Continued) Vernolab ENGEOIL Zone Industrielle des Cents Sillone Tobias Barreto Street No. 150 Rue Lavoisier BP 813 New Neighbourhood Suissa Verneuil Sr Avre CEP: Bello Horizonete France Minas Gerais, Brazil TEL: TEL: FAX: Contact person: Geraldo Mota Abranches Baptist E mail-alain.kohn@sgs.com Technical Director WEBSITE: WEBSITE: Following the issue of this SIL (Service Information Letter), the Oil analysis laboratories list will no longer appear in the P& WC Engine Maintenance manuals. P & WC Customer service Centre 24- HOUR GLOBAL SERVICE CFirst@pwc.ca GLOBAL : (+Canada) (450) USA & CANADA : INTERNATIONAL : (+1AC*) FAX : (+Canada) (450) WEBSITE : Yours truly, PRATT & WHITNEY CANADA COPR. Narcisa Jivan Service Engineering Regional Turboprop Program EXPORT CONTROL CLASSIFICATION: This document does not contain technical data. ISSUED: Jan 21/2013 REVISION: Dec 09/2013 Page 5 of 5

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11 SERVICE INFORMATION LETTER S.I.L NO. GEN-134 Subject Applicability Technical Publication Revision Status All P&WC Engine Series This SIL is issued to remind Publication Services subscribers of the need to regularly check for the revision status of Technical Publications and Bulletins on P&WC site. Ideally, this verification should be conducted every time documentation is accessed. According to our records some operators do not appear to be accessing the system, hence the reminder. This is increasingly important as P&WC continues to improve the frequency of revisions to its Manuals and updates can only be accessed by licensed users who are registered on the P&WC customer portal -- eportal.pwc.ca. Recent Changes to P&WC Technical Publications Services The deployment of Manuals to the customer portal gradually took place between May 2011 and June 2013 and CD-ROMs are no longer distributed by mail. Similarly, Temporary Revisions (TRs) and Bulletins are no longer mailed out as all active subscribers were upgraded to the new online service. (Note that mail out of Revisions, TRs and Bulletins is maintained for subscribers of the Printed Manuals service only.) The online Publications Service is designed for ease of use and peace of mind. Revisions and Bulletins are instantly posted on the Technical Publications application on the Customer Portal. The My Publications workspace in the application displays all the newest documentation applicable to your engine model in one, convenient location. The content on this page is always current; there is no need to check for status before use. Users can view online or download and save an offline backup copy of Manuals and Bulletins. notification can also be requested by individual users to ensure they remain current with updates for Manuals, Bulletins or Ground Base Software (as applicable). It is important to know that individual users at your location must be assigned a license before they can view or download any documentation from the Technical Publications online application. Your subscription to P&WC Technical Publications entitles you to five licenses that must be assigned or revoked by the Technical Publications Administrator in your company. If you have difficulty identifying your Administrator or accessing your Publications, please refer to tutorials on the Get Started page on the site or contact us at customer.service@pwc.ca. You can also provide us your feedback through this address. This Service Information Letter is valid for one year from date of issue. EXPORT CONTROL CLASSIFICATION: This document does not contain technical data. ISSUED: Nov 12/2013 Page 1 of 2 PRATT & WHITNEY CANADA CORP. MARIE-VICTORIN, LONGUEUIL QUEBEC, CANADA J4G 1A1 PRINTED IN CANADA

12 PRATT & WHITNEY CANADA SERVICE INFORMATION LETTER PWC: S.I.L. NO. GEN-134 Revision Status Report and Bulletin Index Checks The revision date for your Manuals, and the latest releases of Service Bulletins or Service Information Letters, can be checked at any time for free on our corporate website: Once on the site, click on Service & Support, then select Technical Publications from the menu bar, or use this direct link -- Alternatively on the customer portal, any Manual or Bulletin posted under My Publications will display the date of issue and the revision number, applicable to the engine model selected. To ensure you have access to the latest Technical Publications, it is your responsibility to check for status before using an offline backup copy of any Manual or Bulletin downloaded from the My Publication section of the application. The same applies if you subscribe to the Printed Manuals service. Exception to the above is direct viewing of Manuals and Bulletins online which saves you from checking for status, browsing bulletin indexes or repeatedly downloading and handling files. For your productivity and peace of mind, what you see on the online application is always current. P&WC is committed to online services and we continue to invest in service improvements. As always, your feedback is important. Do not hesitate to contact us at if you have any suggestion or question. PRATT & WHITNEY CANADA CORP Jean-Francois Arcand Manager, Service Information Management EXPORT CONTROL CLASSIFICATION: This document does not contain technical data. ISSUED: Nov 12/2013 Page 2 of 2

13 PRATT & WHITNEY CANADA SPARE PARTS BULLETIN FUEL FILTER REPLACEMENT PARTS KIT - REPLACEMENT OF PT6A SPB No Model PT6A-140 Engines. 2. Reason To ease procurement and for standardization purposes, replace the fuel filter replacement parts kit with one that has a fuel filter Interchangeability Control (IC) option. 3. Description Replace the fuel filter replacement parts kit with the new one. 4. Approval D.O.T./D.A.A. approved 5. Publications Affected Illustrated Parts Catalog P/N (PT6A-140) 6. Material - Cost and Availability You can get the procurable parts listed in Para. 7., from any Pratt & Whitney Canada Parts Distribution Center. WARNING - PROPRIETARY RIGHTS & EXPORT CONTROLS NOTICE This bulletin contains proprietary information of Pratt & Whitney Canada Corp. ( P&WC ), which P&WC provides in confidence and solely for the purposes of supporting engine certification and providing applicable information regarding the proper use, maintenance, inspection, repair, servicing and parts application of P&WC products and services, as directed therein. Neither this bulletin nor any information in it may be disclosed to others, or used for any other purpose, including, without limitation, to design, create, develop, reproduce, manufacture or derive any design, part, product, material, process, modification, configuration change or repair, or obtain FAA or other government approval to do so. Possession and use of this bulletin is also subject to the restrictions set out in P&WC s Technical Data Agreement (a copy of which may be obtained by contacting P&WC Technical Publications). The contents of this bulletin may be subject to export control laws. Unauthorized export or re-export of the bulletin, or parts thereof, is prohibited. By accepting and possessing this bulletin, you agree to be bound by the foregoing terms. If a Government agency or department intends to disclose any information, written notice should be given to: VP - Legal Services, Pratt & Whitney Canada Corp., 1000 Marie-Victorin (01BE5), Longueuil, Quebec J4G 1A1. P&WC No. E6995K Export Control Classification *Data is subject to the jurisdiction of the Export and Import Controls Bureau of the Department of Foreign Affairs and International Trade of Canada, Department of Commerce of the United States and/or Department of State of the United States. ** Data is not subject to the jurisdiction of the Department of Commerce of the United States or Department of State of the United States but would become subject if exposed to any US involvement. Regulation Canadian ECL(s)* ECCN(s)* P-ECCN(s)** USML (ITAR)* P-USML** Classification Number 9E991 Dec 16/2013 PT6A SPB No. 185 Page1of Pratt & Whitney Canada Corp. PRINTED IN CANADA

14 PT6A SPB No. 185 PRATT & WHITNEY CANADA SPARE PARTS BULLETIN FUEL FILTER REPLACEMENT PARTS KIT - REPLACEMENT OF 6. Material - Cost and Availability (Cont d) The estimated total cost of new parts needed to replace old parts is $Quote (US, 2013). The new parts are available. 7. Material Information The quantity of materials listed in this section is on a per Engine basis. New P/N Keyword Old P/N Qty Est. Unit List Price ($US, 2013) Instructions Disposition Parts Kit, Filter Replacement, FOHE Quote (A)(B) Ê Filter Element, Fuel, Non Cleanable (C) Ê Filter Element Option (IC) Ê ÊElement Filter, Fuel Pump Ref Ê ÊFilter Element, Fuel, Non Cleanable Ref. (C) (A) TWO WAY INTERCHANGEABLE - (ATA 200 Explanation Code 02) The old or the new part can replace the old or the new part. (B) The kit can be procured from any Pratt & Whitney Canada Distribution Center. (C) Change in part hierarchy from old configuration to new configuration. P&WC Proprietary Information. Subject to the restrictions on the first page. Dec 16/2013 The export control classification with respect to this document is contained on the first page. PT6A SPB No. 185 Page2of2

15 PRATT & WHITNEY CANADA SPARE PARTS BULLETIN METAL SHIPPING CONTAINER - INTRODUCTION OF PT6A SPB No Model PT6A-140 Engines. 2. Reason For service engines only, allow the use of a reusable metal shipping container with corresponding shipping instructions. 3. Description 4. Approval D.O.T./D.A.A. approved 5. Publications Affected Illustrated Parts Catalog P/N (PT6A-140) 6. Material - Cost and Availability You can get the procurable parts listed in Para. 7., from any Pratt & Whitney Canada Parts Distribution Center. WARNING - PROPRIETARY RIGHTS & EXPORT CONTROLS NOTICE This bulletin contains proprietary information of Pratt & Whitney Canada Corp. ( P&WC ), which P&WC provides in confidence and solely for the purposes of supporting engine certification and providing applicable information regarding the proper use, maintenance, inspection, repair, servicing and parts application of P&WC products and services, as directed therein. Neither this bulletin nor any information in it may be disclosed to others, or used for any other purpose, including, without limitation, to design, create, develop, reproduce, manufacture or derive any design, part, product, material, process, modification, configuration change or repair, or obtain FAA or other government approval to do so. Possession and use of this bulletin is also subject to the restrictions set out in P&WC s Technical Data Agreement (a copy of which may be obtained by contacting P&WC Technical Publications). The contents of this bulletin may be subject to export control laws. Unauthorized export or re-export of the bulletin, or parts thereof, is prohibited. By accepting and possessing this bulletin, you agree to be bound by the foregoing terms. If a Government agency or department intends to disclose any information, written notice should be given to: VP - Legal Services, Pratt & Whitney Canada Corp., 1000 Marie-Victorin (01BE5), Longueuil, Quebec J4G 1A1. P&WC No. E7602A Export Control Classification *Data is subject to the jurisdiction of the Export and Import Controls Bureau of the Department of Foreign Affairs and International Trade of Canada, Department of Commerce of the United States and/or Department of State of the United States. ** Data is not subject to the jurisdiction of the Department of Commerce of the United States or Department of State of the United States but would become subject if exposed to any US involvement. Regulation Canadian ECL(s)* ECCN(s)* P-ECCN(s)** USML (ITAR)* P-USML** Classification Number 9E991 Dec 13/2013 PT6A SPB No. 186 Page1of Pratt & Whitney Canada Corp. PRINTED IN CANADA

16 PT6A SPB No. 186 PRATT & WHITNEY CANADA SPARE PARTS BULLETIN METAL SHIPPING CONTAINER - INTRODUCTION OF 6. Material - Cost and Availability (Cont d) The estimated total cost of new parts needed to replace old parts is $TBA (US, 2013). The new parts are available. 7. Material Information The quantity of materials listed in this section is on a per Engine basis. New P/N Keyword Old P/N Qty Est. Unit List Price ($US, 2013) Container Assy-Comp Eng Ref Metal Ship PK242 Ê Cover-Shipping,Oil Vent PK245 Ê Plug-Shipping, Thd PK3608 Ê Cap-Shipping, Thd PK1301 Ê Cap-Prot Dust Seal, Thd PK251 Ê Cover-Shipping,Starter Generator PK255 Ê Cover,Shipping-Tacho Mount PK4471 Ê Cover-Shipping, Propeller Shaft PK Ê Cap-Protective,.720 X PK1178 Ê Cap-Protective,Internal Screw Thd PK3611 Ê Cap-Shipping, Thd MS Ê Bolt-Mach, J X ,Dr Hex MS Ê Washer Lock,.375X.683X.094 Instructions Disposition P&WC Proprietary Information. Subject to the restrictions on the first page. Dec 13/2013 The export control classification with respect to this document is contained on the first page. PT6A SPB No. 186 Page2of7

17 PRATT & WHITNEY CANADA SPARE PARTS BULLETIN METAL SHIPPING CONTAINER - INTRODUCTION OF PT6A SPB No Material Information (Cont d) New P/N Keyword Old P/N Qty Est. Unit List Price ($US, 2013) PK Ê Cap-Protective,.857 X MS Ê Strap-Tiedown,Adjustable A/R 0.57 PK Ê Plug-Protective,Tapered PK Ê Cap-Protective,.313 X PK3640 Ê Cap-Shipping, Thd PK423 Ê Desiccant 8 Unit Bagged PK5732 Ê Container- Shipping,Metal,Reusab Asyo PK751 AN PK342 PK1626 PK748 AN PK1624 PK335 PK751 Ê ÊPlate-Identification,Ship Cont Ê ÊScrew-Drive,Round Head,.114 X.250 Ê ÊIndicator- Humidity,Shipping Cntnr Ê ÊWindow-Observtn-Shipp Cont Ê ÊPlate-Data,Ship Container Ê ÊScrew-Drive,Round Head,.114 X.250 Ê ÊValve-Breather,Shipping Container Ê ÊValve-Air Fill,Serv Recp (Scd) Ê ÊPlate-Identification,Ship Cont Quote Quote 4 Quote Instructions Disposition P&WC Proprietary Information. Subject to the restrictions on the first page. Dec 13/2013 The export control classification with respect to this document is contained on the first page. PT6A SPB No. 186 Page3of7

18 PT6A SPB No. 186 PRATT & WHITNEY CANADA SPARE PARTS BULLETIN METAL SHIPPING CONTAINER - INTRODUCTION OF 7. Material Information (Cont d) New P/N Keyword Old P/N Qty Est. Unit List Price ($US, 2013) AN Ê ÊScrew-Drive,Round 4 Quote Head,.114 X.250 MS Ê ÊPlug Pipe,.750Npt,Square PK3799 Ê ÊSkid-Shipping Container 4 Quote PK345 Ê ÊPacking Preformed,5.975X.275 PK333 Ê ÊReceptacle-Service Shpg 1 Quote Cntr PK343 Ê ÊCover-Record 1 Quote Recept.Ship.Contain PK346 Ê ÊCover-Service Recept Ship.Cont. PK5730 Ê ÊStud-Collar,Hex Quote 16X2.030Long PK344 Ê ÊPacking Preformed,4.225X.210 PK341 Ê ÊPacking Extruded,.475X.194 PK2631 Ê ÊGasket-Side Engine Mount PK488 Ê ÊBracket-Eng Mount,Rear PK2630 Ê ÊGasket-Rear Engine Mount PK383 Ê ÊPin- 1 Quote Straight,Headed,.375X1.266 PK495 Ê ÊMount-Swivel,Rear,Asyo MS Ê ÊPin-Cotter(Split) 1,250 1 Quote NAS1149C1063R Ê ÊWasher- 1 Quote Flat,.640X1.188X.063 Instructions Disposition P&WC Proprietary Information. Subject to the restrictions on the first page. Dec 13/2013 The export control classification with respect to this document is contained on the first page. PT6A SPB No. 186 Page4of7

19 PRATT & WHITNEY CANADA SPARE PARTS BULLETIN METAL SHIPPING CONTAINER - INTRODUCTION OF PT6A SPB No Material Information (Cont d) New P/N Keyword Old P/N Qty Est. Unit List Price ($US, 2013) MS P43 Ê ÊPin- 1 Quote Straight,Headed,.625X1.500,Flat PK487 Ê ÊBracket-Eng Mount,Front AN Ê ÊPin-Straight Hd, Quote X1.719,Flat Dr MS Ê ÊWasher Flat,.406X.812X.065 MS Ê ÊPin-Cotter,.094 X PK5731 Ê ÊCradle-Mount,Shipping 1 Quote Container PK3651 Ê ÊPin-Loc,Thd Unc- 2 Quote 2A,2.500 L MS Ê ÊNut-Plain,Hex, Quote 16X.3285 MS Ê ÊWasher Lock,.375X.683X.094 PK749 Ê ÊBracket-Mtg,Ship Container PK338 Ê ÊMount-Shear,Shipping 4 Quote Container(Scd) Ê ÊDecal-Company Insignia,Eng Cntnr MS Ê ÊDecal-Rubber Assembly Date PK2070 Ê Cover-Shipping,Exhaust Duct MS Ê Bolt-Mach, J X ,Hex MS Ê Washer-Flat,.276 X.500 X Instructions Disposition P&WC Proprietary Information. Subject to the restrictions on the first page. Dec 13/2013 The export control classification with respect to this document is contained on the first page. PT6A SPB No. 186 Page5of7

20 PT6A SPB No. 186 PRATT & WHITNEY CANADA SPARE PARTS BULLETIN METAL SHIPPING CONTAINER - INTRODUCTION OF 7. Material Information (Cont d) New P/N Keyword Old P/N Qty Est. Unit List Price ($US, 2013) MS Ê Nut-Plain Hex, X.219 MS Ê Washer Lock,.250X.489X.062 MS Ê Bolt-Mach, J X 3 Quote.750,Hex Ê Shipping Container 1 Quote Instructions PK3199 Ê Cover-Shipping,Air Inlet PK3640 Ê Cap-Shipping, Thd PK1219 Ê Plug-Shipping, Thd PK Ê Cap-Protective,.680 X PK Ê Cap-Protective,.680 X PK1599 Ê Plug-Shipping, Thd PK268 Ê Desiccant-4 Unit Bagged PK268 Ê Desiccant-4 Unit Bagged PK Ê Cap-Protective,.605 X PK Ê Cap-Protective,.715 X PK245 Ê Plug-Shipping, Thd PK3609 Ê Cap-Shipping, Thd PK Ê Cap-Protective,.715 X PK2261 Ê Cover-Shipping,Center Engine Mount Instructions Disposition P&WC Proprietary Information. Subject to the restrictions on the first page. Dec 13/2013 The export control classification with respect to this document is contained on the first page. PT6A SPB No. 186 Page6of7

21 PRATT & WHITNEY CANADA SPARE PARTS BULLETIN METAL SHIPPING CONTAINER - INTRODUCTION OF PT6A SPB No Material Information (Cont d) New P/N Keyword Old P/N Qty Est. Unit List Price ($US, 2013) PK Ê Cap-Protective,.680 X PK245 Ê Plug-Shipping, Thd PK Ê Cap-Protective,.720 X PK245 Ê Plug-Shipping, Thd PK5192 Ê Cap-Protective 1 Quote PK245 Ê Plug-Shipping, Thd Instructions Disposition P&WC Proprietary Information. Subject to the restrictions on the first page. Dec 13/2013 The export control classification with respect to this document is contained on the first page. PT6A SPB No. 186 Page7of7

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23 PRATT & WHITNEY CANADA P&WC S.B. No. 1002R29 BULLETIN INDEX LOCATOR ROTOR COMPONENTS - SERVICE LIFE MODEL APPLICATION PT6A-6, PT6A-6A, PT6A-6B, PT6A-6/C20, PT6A-20, PT6A-20A, PT6A-20B, PT6A-21, PT6A-27, PT6A-28, PT6A-34, PT6A-35, PT6A-34B, PT6A-36, PT6A-114, PT6A-114A, PT6A-135, PT6A-135A Model(s) deleted this revision: PT6A-140 Compliance: Summary: Refer to Para. 1.E. in the Service Bulletin 1. This service bulletin provides the service life limits for the rotor component parts which are authorized for use in the above Pratt & Whitney Canada Inc. engine models, as required by the Canadian Department of Transport regulations. 2. Compliance with the Accomplishment Instructions in step 3. of this service bulletin is necessary to maintain conformity with the approval type design and the validity of the airworthiness certification. 3. The Low Cycle Fatigue (LCF) counting process is described in detail, including the formula to use, refer to the Remaining Life section below, to calculate the total accumulated cycles for the various rotor components. Dec 01/1973 Revision No. 29: Dec 05/2013 PT6A Cover Sheet 24-Hour Global Service USA & CANADA Other CFIRST CENTRE International... (IAC*) Fax Toll free where available (SIL GEN-027) * International Access Code Web Site...

24 WARNING - PROPRIETARY RIGHTS & EXPORT CONTROLS NOTICE This bulletin contains proprietary information of Pratt & Whitney Canada Corp. ( P&WC ), which P&WC provides in confidence and solely for the purposes of supporting engine certification and providing applicable information regarding the proper use, maintenance, inspection, repair, servicing and parts application of P&WC products and services, as directed therein. Neither this bulletin nor any information in it may be disclosed to others, or used for any other purpose, including, without limitation, to design, create, develop, reproduce, manufacture or derive any design, part, product, material, process, modification, configuration change or repair, or obtain FAA or other government approval to do so. Possession and use of this bulletin is also subject to the restrictions set out in P&WC s Technical Data Agreement (a copy of which may be obtained by contacting P&WC Technical Publications). The contents of this bulletin may be subject to export control laws. Unauthorized export or re-export of the bulletin, or parts thereof, is prohibited. By accepting and possessing this bulletin, you agree to be bound by the foregoing terms. If a Government agency or department intends to disclose any information, written notice should be given to: VP - Legal Services, Pratt & Whitney Canada Corp., 1000 Marie-Victorin (01BE5), Longueuil, Quebec J4G 1A1. Export Control Classification *Data is subject to the jurisdiction of the Export and Import Controls Bureau of the Department of Foreign Affairs and International Trade of Canada, Department of Commerce of the United States and/or Department of State of the United States. ** Data is not subject to the jurisdiction of the Department of Commerce of the United States or Department of State of the United States but would become subject if exposed to any US involvement. Regulation Canadian ECL(s)* ECCN(s)* P-ECCN(s)** USML (ITAR)* P-USML** Classification Number 9E991

25 Pratt & Whitney Canada Corp. 1000, Marie-Victorin Longueuil, Québec, Canada J4G 1A1 Tél December 2013 P&WC S.B. No. 1002R29 REVISION TRANSMITTAL SHEET MODEL PT6A SUBJECT: Pratt & Whitney Canada Service Bulletin No. PT6A , Rev. No. 29, dated Dec 05/2013 (P&WC S.B. No. 1002R29) ROTOR COMPONENTS - SERVICE LIFE Replace your existing copy of this service bulletin with the attached revised bulletin. Destroy the superseded copy. Please retain this Revision Transmittal Sheet with the revised bulletin. SUMMARY: This revision is issued to: v remove the PT6A-140 engine since the life items are part of the AWL section of the Maintenance Manual. EFFECT OF REVISION ON PRIOR ACCOMPLISHMENT: None. NOTE: A black bar in the left margin indicates a change in that line of text or figure. REVISION HISTORY: Original Issue: Dec 01/1973 Revision No. 1: Aug 26/1974 Revision No. 2: Jan 28/1975 Revision No. 3: Nov 10/1975 Revision No. 4: Apr 01/1976 Revision No. 5: Apr 25/1976 Revision No. 6: Oct 20/1976 Revision No. 7: Mar 30/1977 Revision No. 8: Dec 15/1977 Revision No. 9: Jun 16/1978 Revision No. 10: Jun 22/1979 Revision No. 11: Apr 22/1980 Revision No. 12: Feb 09/1982 Revision No. 13: Aug 16/1982 Revision No. 14: Aug 29/1983 Revision No. 15: Jun 01/1984 Revision No. 16: Feb 05/1985 Revision No. 17: Oct 02/1985 Revision No. 18: Oct 08/1986 Revision No. 19: Aug 08/1989 Revision No. 20: Jun 04/1990 Revision No. 21: Dec 05/1998 Revision No. 22: Apr 17/2000 Revision No. 23: Apr 12/2002 Revision No. 24: Sep 29/2004 Revision No. 25: Dec 19/2007 Revision No. 26: Jun 13/2012 Revision No. 27: Jun 15/2012 Revision No. 28: Oct 23/2012 Revision No. 29: Dec 05/2013

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27 PRATT & WHITNEY CANADA ROTOR COMPONENTS - SERVICE LIFE P&WC S.B. No. 1002R29 1. Planning Information A. Effectivity PT6A-6, PT6A-6A, PT6A-6B, PT6A-6/C20, PT6A-20, PT6A-20A, PT6A-20B, PT6A-21, PT6A-27, PT6A-28, PT6A-34, PT6A-34B, PT6A-35, PT6A-36, PT6A-114, PT6A-114A, PT6A-135, PT6A-135A Engines B. Concurrent Requirements None. C. Reason (1) To provide initial rotor components service life in accordance with D.O.T. regulation. (2) To provide information covering method of marking. D. Description (1) Engine rotating components listed in the table below are subject to LCF due to cyclic operation of the engine. As a result, these parts must be replaced when their respective accumulated total cycle limit is reached. (2) Operators must record all flights, starts and accumulated total cycles (which must be calculated using the formula Ref. 3.E.) in the applicable document for each component (i.e. logbook, LCF component card, etc.). (3) The following is additional information for the Accumulated Total Cycle calculation: v A start is defined as an engine start followed by one or more flights. v Aircraft operation often includes abbreviated engine cycles. The definition of an abbreviated cycle is: idle - takeoff - flight - landing - idle. A normal or full cycle includes the foregoing plus an engine start and shutdown (i.e. abbreviated cycles are equivalent to the number of flights minus the number of starts). The limits specified in Paragraph 3. (Ref. Table 1) are in terms of full cycles. Accumulated abbreviated cycles are summated in terms of full cycles by means of a formula and tabulated factors. v A full cycle is defined as an engine start followed by one flight then shutdown. v An abbreviated cycle is less severe than a full cycle. To benefit from this, an Abbreviated Cycle Factor (ACF) is listed in the le below, and used in the formula which determines accumulated total cycles; v A Flight Count Factor (FCF) is a multiplying factor that can be used to credit or debit life to the components listed in the Life Service to reflect the aircraft application of the engine. This factor can also be specific to an operator that diverges from the standards as missions. P&WC No , 31427, B6344A, D0998A, D0998B, D2849A, D2849C, DCR20432 Dec 01/1973 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 29: Dec 05/ Pratt & Whitney Canada Corp. Page 1 of 10 PRINTED IN CANADA

28 P&WC S.B. No. 1002R29 PRATT & WHITNEY CANADA ROTOR COMPONENTS - SERVICE LIFE 1. Planning Information (Cont d) v When abbreviated cycles are not recorded, each flight is considered to have been preceded by one start, i.e., each flight is equivalent to a full cycle. (4) The LCF life limits listed in the below are incorporated in the Type Approval as issued by Transport Canada. Transport Canada must approve changes to rotor component cyclic lives. (5) The specified cyclic lives apply to engines, modules and components that contain parts listed in the approved parts list, as shown in the applicable Illustrated Parts Catalog (IPC) and SB. Operators requesting approval to incorporate parts not listed in the applicable IPC and SBs will be required to substantiate the cyclic lives of these parts to their local Airworthiness Authority. (6) Operators having missions which include many touch-and-go flights, or a frequency of scheduled in-flight shutdowns (such as used within training missions) or which include more than 10 flights per hour, must submit their mission profiles to Pratt & Whitney Canada Inc. for life cycle analysis. (7) Operators making scheduled or frequent use of the engine s highest allowable rated power must submit their mission profile(s) to P&WC for analysis. (8) The same component (e.g. disk, Hub, Impeller, etc.) may be installed in different models, providing the part number is authorized to be installed in the specific engine models (Ref. applicable Service Bulletin). Operators transferring rotating components between engine models governed by different SBs must adhere to the lower of the LCF life limits published in the applicable SBs. E. Compliance NOTE: 1. This applies to all PT6A engines and exclude all ST6 (industrial and marine) engines. NOTE: 2. It is not permitted to use parts which were installed on ST6 engines for PT6 engines. The service lives quoted in the Accomplishment Instructions are incorporated by reference in the type approval as issued by the Canadian Department of Transport. Compliance with these instructions is therefore necessary to maintain conformity with the approval type design and the validity of the airworthiness certification. Dec 01/1973 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 29: Dec 05/2013 Page 2 of 10

29 PRATT & WHITNEY CANADA ROTOR COMPONENTS - SERVICE LIFE P&WC S.B. No. 1002R29 1. Planning Information (Cont d) F. Approval Transport Canada has reviewed and approved the technical contents of this Service Bulletin. NOTE: G. Manpower Not applicable. H. Weight and Balance None. I. Electrical Load Data Not changed. This Service Bulletin is incorporated by reference in one or more Transport Canada, Aircraft Engine Type Approvals and the service lives thereby constitute limits applicable to the corresponding engines, modules and components which embody only parts listed in the Transport Canada approved parts list, as promulgated in the applicable Illustrated Parts Catalog and Service Bulletins. Operators requiring approval for incorporation of parts not listed will be required to substantiate to their local Airworthiness Authority the applicability of the lives of the substitute parts and associated parts and assemblies. J. Software Accomplishment Summary Not applicable. K. References Applicable PT6A Technical Manuals P&WC S.B. No. 1094, 1113, 1164 and 1302 L. Publications Affected Applicable PT6A Technical Manuals M. Interchangeability and Intermixability of Parts Not applicable. 2. Material Information A. Industry Support Information Not applicable. Dec 01/1973 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 29: Dec 05/2013 Page 3 of 10

30 P&WC S.B. No. 1002R29 PRATT & WHITNEY CANADA ROTOR COMPONENTS - SERVICE LIFE 2. Material Information (Cont d) B. Material - Cost and Availability Not applicable. C. Material Necessary for Each Engine Not applicable. D. Reidentified Parts None. E. Tooling - Price and Availability Not applicable. 3. Accomplishment Instructions A. Accumulated total cycles and all flights and starts must be recorded in the appropriate engine log book. B. Turbine disk assemblies removed for repair must be tagged, stating the total number of flights, engine starts and/or the calculated total cycles, per Paragraph 3.E.. C. Deleted D. Rotor components with lives greater than the limits shown in Table 1 or rotor components not supported with proper documentation, are to be removed from service. TABLE 1, Rotor Components - Service Life Limits Description Hub, Compressor (1st Stage) Detail Part No. Engine Model Abbr d Cycle Factor Flight Count Factor Life Limits No. Of Cycles PT6A-6, -6A, -6B, /C20, -20, -20B PT6A-6, -6A, -6B, /C20, -20, -20B PT6A PT6A-6, -6A, -6B, -6/C20, -20, -20B Dec 01/1973 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 29: Dec 05/2013 Page 4 of 10

31 PRATT & WHITNEY CANADA ROTOR COMPONENTS - SERVICE LIFE P&WC S.B. No. 1002R29 3. Accomplishment Instructions (Cont d) Description TABLE 1, Rotor Components - Service Life Limits (Cont d) Detail Part No. Engine Model PT6A-6, -6A, -6B, -6/C20, -20, -20A, -20B, -21, -27, -28, -34, -35, -34B, -36, -114, -114A, -135, -135A Abbr d Cycle Factor Flight Count Factor Life Limits No. Of Cycles PT6A-6, -6A, -6B, /C20, -20, -20B PT6A Stub Shaft Deleted Compressor Rotor Rotor Compressor Deleted Disk, Compressor (2nd Stage) Disk, Compressor (3rd Stage) PT6A-6, -6A, -6B, -6/C20, -20, -20B PT6A-6, -6A, -6B, -6/C20, -20, -20A, -20B, -21, -27, -28, -34, -35, -34B, -36, -114, -114A, -135, -135A Deleted PT6A-6, -6A, -6B, -6/C20, -20, -20B PT6A-6, -6A, -6B, -6/C20, -20, -20A, -20B, -21, -27, -28, -34, -34B, -35, -36, -114, -114A, -135, -135A Deleted Impeller PT6A-6, -6A, -6B Dec 01/1973 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 29: Dec 05/2013 Page 5 of 10

32 P&WC S.B. No. 1002R29 PRATT & WHITNEY CANADA ROTOR COMPONENTS - SERVICE LIFE 3. Accomplishment Instructions (Cont d) TABLE 1, Rotor Components - Service Life Limits (Cont d) Description Disk, Compressor Turbine Detail Part No. Engine Model PT6A-6, -6A, -6B, -6/C20, -20, -20B Abbr d Cycle Factor Flight Count Factor Life Limits No. Of Cycles PT6A-6, -6A, -6B PT6A-6, -6A, -6B, /C20, -20, -20B PT6A-6, -6A, -6B PT6A-21, -27, -28, -34, -34B, -36, -114, PT6A-6, -6A, -6B, -6/C20, -20, -20A, -20B PT6A-21, -27, -28, , -34B, -36, PT6A-21, -27, -28, ,-34B, -36, PT6A-35, -114A, , -135A, Deleted PT6A-135, -135A * PT6A-6, -6A, -6B, /C20, -20, -20B * PT6A-6, -6A, -6B, /C20, -20, -20B PT6A-21, -27, -28, , PT6A-114, -114A PT6A-34B Dec 01/1973 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 29: Dec 05/2013 Page 6 of 10

33 PRATT & WHITNEY CANADA ROTOR COMPONENTS - SERVICE LIFE P&WC S.B. No. 1002R29 3. Accomplishment Instructions (Cont d) Description TABLE 1, Rotor Components - Service Life Limits (Cont d) Detail Part No. Engine Model * PT6A-6, -6A, -6B, -6/C20, -20, -20A, -20B Abbr d Cycle Factor Flight Count Factor Life Limits No. Of Cycles PT6A PT6A-135, -135A PT6A Deleted Disk, Power Turbine PT6A-6, -6A, -6B, PT6A-6, -6A, -6B, /C20, -20, -20B PT6A PT6A-6, -6A, -6B, -6/C20, -20, -20A, -20B PT6A-27, -28, PT6A-27, PT6A PT6A-20, -20A, -20B, , -27, -28, PT6A-6, -6A, -6B, -6/C20, -20, -20A, -20B PT6A-6, -6A, -6B PT6A-20, -20A, -20B PT6A-34, PT6A-114, -114A PT6A-34B Dec 01/1973 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 29: Dec 05/2013 Page 7 of 10

34 P&WC S.B. No. 1002R29 PRATT & WHITNEY CANADA ROTOR COMPONENTS - SERVICE LIFE 3. Accomplishment Instructions (Cont d) TABLE 1, Rotor Components - Service Life Limits (Cont d) Description Detail Part No. Engine Model Abbr d Cycle Factor Flight Count Factor Life Limits No. Of Cycles PT6A-21, -27, PT6A-135, -135A PT6A Deleted E. Life Determination/Calculation (1) Remaining component life is determined by subtracting the calculated accumulated total cycles from the accumulated total cycle limits shown in the table above. (2) The accumulated total cycles are calculated as follows, using the factors provided in the table above. Two examples are provided below using the following formula, to illustrate the difference in calculation of accumulated total cycles between an engine operated with full cycles versus an engine operated using a combination of full and abbreviated cycles. (3) At repair and overhaul, component life is calculated in accordance with the following formula: Accumulated Total Cycles =[No. of Starts +(No. of Flights - No. of Starts ) ] X Flight Count Factor Abbreviated Cycle Factor Dec 01/1973 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 29: Dec 05/2013 Page 8 of 10

35 PRATT & WHITNEY CANADA ROTOR COMPONENTS - SERVICE LIFE P&WC S.B. No. 1002R29 3. Accomplishment Instructions (Cont d) (4) Example No. 1 (Full cycles only - includes flights where starts are not recorded): EXAMPLE: Engine Model PT6A-27 Part No (Hub, Compressor 1st Stage) Abbreviated Cycle Factor 2 No. of Starts 9000 No. of Flights 9000 Flight Count Factor 1 Accumulated Total Cycles = [ ( )]X1 2 = [ ] X 1 = 9000 Dec 01/1973 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 29: Dec 05/2013 Page 9 of 10

36 P&WC S.B. No. 1002R29 PRATT & WHITNEY CANADA ROTOR COMPONENTS - SERVICE LIFE 3. Accomplishment Instructions (Cont d) (5) Example No. 2 (Full and abbreviated cycles): EXAMPLE: Engine Model PT6A-27 Part No (Hub, Compressor 1st Stage) Abbreviated Cycle Factor 2 No. of Starts 3000 No. of Flights 9000 Flight Count Factor 1 Accumulated Total Cycles = [ ( )]X1 2 = [ ] X 1 = 6000 F. Engine rotating components subject to LCF limits may be modified (i.e. reworked). The modified component is introduced by an SB, which allows rework of pre-sb components to the post-sb configuration. When a component is modified and reidentified with a new part number due to rework action, both pre-sb and post-sb cyclic lives must be taken into consideration when calculating the total accumulated cycles, as follows: Total Accumulated Cycles = Pre-SB accumulated total cycles + Post-SB accumulated total cycles. NOTE: The post-sb accumulated total cycle limit is to be used to determine the remaining LCF life of the modified component. G. Accumulated total cycles must be marked using a CY prefix, as follows: 4. Appendix (1) The accumulated total cycles between each shop visit, rounded to the nearest 100 cycles, must be marked with the last two digits dropped and followed by a dash (-). (2) A part having LCF cycles of 525, 1,819, and 1,972, at shop visits, would be marked as CY which equals approximately 4,300 accumulated total cycles. Not applicable. Dec 01/1973 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 29: Dec 05/2013 Page 10 of 10

37 BULLETIN INDEX LOCATOR COMPRESSOR TURBINE BLADE - REPLACEMENT OF MODEL APPLICATION PT6A-21, PT6A-25, PT6A-25A, PT6A-25C, PT6A-27, PT6A-28, PT6A-34, PT6A-34AG, PT6A-34B, PT6A-36, PT6A-114, PT6A-114A Compliance: CATEGORY 10 PRATT & WHITNEY CANADA P&WC S.B. No. 1455R3 Summary: The intent of this Service Bulletin is cancelled. The content of the Service Bulletin is provided for information only. Apr 12/1991 Revision No. 3: Oct 17/2013 PT6A Cover Sheet 24-Hour Global Service USA & CANADA Other CFIRST CENTRE International... (IAC*) Fax Toll free where available (SIL GEN-027) * International Access Code Web Site...

38 WARNING - PROPRIETARY RIGHTS & EXPORT CONTROLS NOTICE This bulletin contains proprietary information of Pratt & Whitney Canada Corp. ( P&WC ), which P&WC provides in confidence and solely for the purposes of supporting engine certification and providing applicable information regarding the proper use, maintenance, inspection, repair, servicing and parts application of P&WC products and services, as directed therein. Neither this bulletin nor any information in it may be disclosed to others, or used for any other purpose, including, without limitation, to design, create, develop, reproduce, manufacture or derive any design, part, product, material, process, modification, configuration change or repair, or obtain FAA or other government approval to do so. Possession and use of this bulletin is also subject to the restrictions set out in P&WC s Technical Data Agreement (a copy of which may be obtained by contacting P&WC Technical Publications). The contents of this bulletin may be subject to export control laws. Unauthorized export or re-export of the bulletin, or parts thereof, is prohibited. By accepting and possessing this bulletin, you agree to be bound by the foregoing terms. If a Government agency or department intends to disclose any information, written notice should be given to: VP - Legal Services, Pratt & Whitney Canada Corp., 1000 Marie-Victorin (01BE5), Longueuil, Quebec J4G 1A1. Export Control Classification *Data is subject to the jurisdiction of the Export and Import Controls Bureau of the Department of Foreign Affairs and International Trade of Canada, Department of Commerce of the United States and/or Department of State of the United States. ** Data is not subject to the jurisdiction of the Department of Commerce of the United States or Department of State of the United States but would become subject if exposed to any US involvement. Regulation Canadian ECL(s)* ECCN(s)* P-ECCN(s)** USML (ITAR)* P-USML** Classification Number 9E991

39 Pratt & Whitney Canada Corp. 1000, Marie-Victorin Longueuil, Québec, Canada J4G 1A1 Tél October 2013 P&WC S.B. No. 1455R3 REVISION TRANSMITTAL SHEET MODEL PT6A SUBJECT: Pratt & Whitney Canada Service Bulletin No. PT6A , Rev. No. 3, dated Oct 17/2013 (P&WC S.B. No. 1455R3) COMPRESSOR TURBINE BLADE - REPLACEMENT OF Replace your existing copy of this service bulletin with the attached revised bulletin. Destroy the superseded copy. Please retain this Revision Transmittal Sheet with the revised bulletin. SUMMARY: This revision is issued to: v update the superseding statement in Para. 1.B., Concurrent Requirements. v change the compliance code from 8 to 10. EFFECT OF REVISION ON PRIOR ACCOMPLISHMENT: None. NOTE: A black bar in the left margin indicates a change in that line of text or figure. REVISION HISTORY: Original Issue: Apr 12/1991 Revision No. 1: Sep 04/1992 Revision No. 2: Dec 06/1999 Revision No. 3: Oct 17/2013

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41 PRATT & WHITNEY CANADA COMPRESSOR TURBINE BLADE - REPLACEMENT OF P&WC S.B. No. 1455R3 1. Planning Information A. Effectivity PT6A-21 Engines. PT6A-25 Engines. PT6A-25A Engines. PT6A-25C Engines. PT6A-27 Engines. PT6A-28 Engines. PT6A-34 Engines. PT6A-34AG Engines. PT6A-34B Engines. PT6A-36 Engines. PT6A-114 Engines. PT6A-114A Engines. B. Concurrent Requirements P&WC S.B. No is superseded by P&WC S.B. No C. Reason To introduce an optional compressor turbine blade having a protective coating with improved resistance to sulfidation. D. Description The compressor turbine blades are removed and replaced with similar new blades having an alternative protective coating. NOTE: E. Compliance Incorporation of this service bulletin does not diminish the requirement to perform compressor washes, as recommended in the engine maintenance manual, to reduce sulfidation attack. CATEGORY 10 - This Service Bulletin is provided for information only. F. Approval D.O.T./D.A.A. approved. G. Manpower No more man-hours are necessary to include this service bulletin at overhaul. H. Weight and Balance None. P&WC No , 82996A, 82996B, Apr 12/1991 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 3: Oct 17/ Pratt & Whitney Canada Corp. Page 1 of 4 PRINTED IN CANADA

42 P&WC S.B. No. 1455R3 PRATT & WHITNEY CANADA COMPRESSOR TURBINE BLADE - REPLACEMENT OF 1. Planning Information (Cont d) I. Electrical Load Data Not changed. J. Software Accomplishment Summary Not applicable. K. References Illustrated Parts Catalog P/N (PT6A-21, PT6A-27, PT6A-28) Illustrated Parts Catalog P/N (PT6A-25, PT6A-25A) Illustrated Parts Catalog P/N (PT6A-25C) Illustrated Parts Catalog P/N (PT6A-34, PT6A-34AG, PT6A-34B, PT6A-36) Illustrated Parts Catalog P/N (PT6A-114, PT6A-114A, PT6A-135, PT6A-135A) Maintenance Manual P/N (PT6A-21, PT6A-27, PT6A-28) Maintenance Manual P/N (PT6A-25, PT6A-25A) Maintenance Manual P/N (PT6A-25C) Maintenance Manual P/N (PT6A-34, PT6A-34AG, PT6A-34B, PT6A-36) Maintenance Manual P/N (PT6A-114, PT6A-114A, PT6A-135, PT6A-135A) Overhaul Manual P/N (PT6A-21, PT6A-27, PT6A-28) Overhaul Manual P/N (PT6A-25, PT6A-25A) Overhaul Manual P/N (PT6A-25C) Overhaul Manual P/N (PT6A-34, PT6A-34AG, PT6A-34B, PT6A-35, PT6A-36, PT6A-114, PT6A-114A, PT6A-135, PT6A-135A) P&WC S.B. No L. Publications Affected Illustrated Parts Catalog P/N (PT6A-21, PT6A-27, PT6A-28) Illustrated Parts Catalog P/N (PT6A-25, PT6A-25A) Illustrated Parts Catalog P/N (PT6A-25C) Illustrated Parts Catalog P/N (PT6A-34, PT6A-34AG, PT6A-34B, PT6A-36) Illustrated Parts Catalog P/N (PT6A-114, PT6A-114A, PT6A-135, PT6A-135A) M. Interchangeability and Intermixability of Parts Interchangeability - Refer to Para. 2.C. Intermixability - The old blades P/N are intermixable with the new blades P/N Material Information A. Industry Support Information Not applicable. Apr 12/1991 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 3: Oct 17/2013 Page 2 of 4

43 PRATT & WHITNEY CANADA COMPRESSOR TURBINE BLADE - REPLACEMENT OF P&WC S.B. No. 1455R3 2. Material Information (Cont d) B. Material - Cost and Availability You can get the procurable parts listed in Para. 2.C. from any Pratt & Whitney Canada Parts Distribution Center. The estimated total cost of new parts needed to replace old parts is $18, (US, 1999). The new parts are available. C. Material Necessary for Each Engine The quantity of materials listed in this section is on a per Engine basis. New P/N Keyword Old P/N Qty Est. Unit List Price ($US, 1999) Instructions Disposition For information only: Blade, Compressor Turbine (A)(B)(C) (A) TWO WAY INTERCHANGEABLE - (ATA 200 Explanation Code 02): The old or the new part can replace the old or the new part. (B) Discard the part if it is unserviceable. Return a serviceable part to stock. (C) Old blades and new blades are intermixable. D. Reidentified Parts None. E. Tooling - Price and Availability Not applicable. 3. Accomplishment Instructions NOTE: The accomplishment instructions that follows are for information only. A. Remove the parts listed under Old P/N in Para. 2.C., Material Information, per the applicable overhaul manual instructions. B. Install the parts listed under New P/N in Para. 2.C., Material Information, per the applicable maintenance or overhaul manual instructions. Apr 12/1991 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 3: Oct 17/2013 Page 3 of 4

44 P&WC S.B. No. 1455R3 PRATT & WHITNEY CANADA COMPRESSOR TURBINE BLADE - REPLACEMENT OF 3. Accomplishment Instructions (Cont d) C. Write accomplishment of P&WC S.B. No in the applicable engine module log book. 4. Appendix Not applicable. Apr 12/1991 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 3: Oct 17/2013 Page 4 of 4

45 BULLETIN INDEX LOCATOR COMPRESSOR TURBINE DISK BALANCING ASSEMBLY AND BLADES - REPLACEMENT/MODIFICATION OF MODEL APPLICATION PT6A-21, PT6A-25, PT6A-25A, PT6A-25C, PT6A-27, PT6A-28, PT6A-34, PT6A-34AG, PT6A-34B, PT6A-36, PT6A-114, PT6A-114A, PT6D-114A Compliance: CATEGORY 8 PRATT & WHITNEY CANADA P&WC S.B. No. 1521R5 Summary: Under adverse environmental operating conditions, the coating (CPW333) used on the compressor turbine blades does not have sufficient resistance to sulphidation. Introduce an alternative compressor turbine blade with an improved coating (CPW 550) which provides increased resistance to sulphidation. Aug 19/1997 Revision No. 5: Nov 25/2013 PT6A Cover Sheet 24-Hour Global Service USA & CANADA Other CFIRST CENTRE International... (IAC*) Fax Toll free where available (SIL GEN-027) * International Access Code Web Site...

46 WARNING - PROPRIETARY RIGHTS & EXPORT CONTROLS NOTICE This bulletin contains proprietary information of Pratt & Whitney Canada Corp. ( P&WC ), which P&WC provides in confidence and solely for the purposes of supporting engine certification and providing applicable information regarding the proper use, maintenance, inspection, repair, servicing and parts application of P&WC products and services, as directed therein. Neither this bulletin nor any information in it may be disclosed to others, or used for any other purpose, including, without limitation, to design, create, develop, reproduce, manufacture or derive any design, part, product, material, process, modification, configuration change or repair, or obtain FAA or other government approval to do so. Possession and use of this bulletin is also subject to the restrictions set out in P&WC s Technical Data Agreement (a copy of which may be obtained by contacting P&WC Technical Publications). The contents of this bulletin may be subject to export control laws. Unauthorized export or re-export of the bulletin, or parts thereof, is prohibited. By accepting and possessing this bulletin, you agree to be bound by the foregoing terms. If a Government agency or department intends to disclose any information, written notice should be given to: VP - Legal Services, Pratt & Whitney Canada Corp., 1000 Marie-Victorin (01BE5), Longueuil, Quebec J4G 1A1. Export Control Classification *Data is subject to the jurisdiction of the Export and Import Controls Bureau of the Department of Foreign Affairs and International Trade of Canada, Department of Commerce of the United States and/or Department of State of the United States. ** Data is not subject to the jurisdiction of the Department of Commerce of the United States or Department of State of the United States but would become subject if exposed to any US involvement. Regulation Canadian ECL(s)* ECCN(s)* P-ECCN(s)** USML (ITAR)* P-USML** Classification Number 9E991

47 Pratt & Whitney Canada Corp. 1000, Marie-Victorin Longueuil, Québec, Canada J4G 1A1 Tél November 2013 P&WC S.B. No. 1521R5 REVISION TRANSMITTAL SHEET MODEL PT6A SUBJECT: Pratt & Whitney Canada Service Bulletin No. PT6A , Rev. No. 5, dated Nov 25/2013 (P&WC S.B. No. 1521R5) COMPRESSOR TURBINE DISK BALANCING ASSEMBLY AND BLADES - REPLACEMENT/MODIFICATION OF Replace your existing copy of this service bulletin with the attached revised bulletin. Destroy the superseded copy. Please retain this Revision Transmittal Sheet with the revised bulletin. SUMMARY: This revision is issued to: v Reinstate the SB for PT6A-21, PT6A-25, PT6A-25A, PT6A-25C, PT6A-27, PT6A-28 EFFECT OF REVISION ON PRIOR ACCOMPLISHMENT: None. NOTE: A black bar in the left margin indicates a change in that line of text or figure. REVISION HISTORY: Original Issue: Aug 19/1997 Revision No. 1: May 28/1998 Revision No. 2: Jan 22/1999 Revision No. 3: Jan 11/2000 Revision No. 4: Oct 17/2013 Revision No. 5: Nov 25/2013

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49 PRATT & WHITNEY CANADA P&WC S.B. No. 1521R5 COMPRESSOR TURBINE DISK BALANCING ASSEMBLY AND BLADES - REPLACEMENT/MODIFICATION OF 1. Planning Information A. Effectivity All PT6A-21, -25, -25A, -25C Engines All PT6A-27 Engines and all engines converted to Engine Model PT6A-27 (Ref. engine conversion SB1214) All PT6A-28 Engines and all engines converted to Engine Model PT6A-28 (Ref. engine conversion SB1120) All PT6A-34 Engines and all engines converted to Engine Model PT6A-34 (Ref. engine conversion SB1499) All PT6A-34AG Engines and all engines converted to Engine Model PT6A-34AG (Ref. engine conversion SB1252) All PT6A-34B Engines All PT6A-36 Engines and all engines converted to Engine Model PT6A-36 (Ref. engine conversion SB1405) PT6A-114 Engines which are before and include Serial No. PCE PT6A-114 Engines which are before and include Serial No. PCE-PB0517 PT6A-114A Engines which are before and include Serial No. PCE and all engines converted to Engine Model PT6A-114A (Ref. engine conversion SB1453) PT6A-114A Engines which are before and include Serial No. PCE-PC0507 and all engines converted to Engine Model PT6A-114A (Ref. engine conversion SB1453) All PT6D-114A Engines B. Concurrent Requirements For the PT6A-114, PT6A-114A P&WC S.B. No is superseded by P&WC S.B. No For the PT6A-34, PT6A-34AG, PT6A-34B, PT6A-36 P&WC S.B. No is superseded by P&WC S.B. No C. Reason (1) Problem Field operators are requesting that the coating used on compressor turbine blades be changed. (2) Cause Current coating (CPW333) used on compressor turbine blades does not have sufficient resistance to sulphidation under adverse environmental operating conditions. (3) Solution Introduce an alternative compressor turbine blade with a coating (CPW550) which provides increased resistance to sulphidation. P&WC No. B8888A, B8888B, B8888C, B8888D Aug 19/1997 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 5: Nov 25/ Pratt & Whitney Canada Corp. Page 1 of 5 PRINTED IN CANADA

50 P&WC S.B. No. 1521R5 PRATT & WHITNEY CANADA COMPRESSOR TURBINE DISK BALANCING ASSEMBLY AND BLADES - REPLACEMENT/MODIFICATION OF 1. Planning Information (Cont d) D. Description Replace the compressor turbine blades with similar compressor turbine blades incorporating a coating (CPW550) which provides improved resistance to sulphidation. NOTE: Incorporation of this service bulletin does not diminish the requirement to perform compressor washes, as recommended in the engine maintenance manual, to reduce sulphidation attack. E. Compliance CATEGORY 8 - This service bulletin is optional and can be done at the discretion of the operator. F. Approval D.O.T./D.A.A. approved. G. Manpower No more man-hours are necessary to include this service bulletin at overhaul. H. Weight and Balance None. I. Electrical Load Data Not changed. J. Software Accomplishment Summary Not applicable. K. References Illustrated Parts Catalog P/N (PT6A-21, PT6A-27, PT6A-28) Illustrated Parts Catalog P/N (PT6A-25, PT6A-25A) Illustrated Parts Catalog P/N (PT6A-25C) Illustrated Parts Catalog P/N (PT6A-34, PT6A-34AG, PT6A-34B, PT6A-36) Illustrated Parts Catalog P/N (PT6A-114, PT6A-114A, PT6A-135, PT6A-135A) Maintenance Manual P/N (PT6A-21, PT6A-27, PT6A-28) Maintenance Manual P/N (PT6A-25, PT6A-25A) Maintenance Manual P/N (PT6A-25C) Maintenance Manual P/N (PT6A-34, PT6A-34AG, PT6A-34B, PT6A-36) Aug 19/1997 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 5: Nov 25/2013 Page 2 of 5

51 PRATT & WHITNEY CANADA P&WC S.B. No. 1521R5 COMPRESSOR TURBINE DISK BALANCING ASSEMBLY AND BLADES - REPLACEMENT/MODIFICATION OF 1. Planning Information (Cont d) Maintenance Manual P/N (PT6A-114, PT6A-114A, PT6A-135, PT6A-135A) Overhaul Manual P/N (PT6A-21, PT6A-27, PT6A-28) Overhaul Manual P/N (PT6A-25, PT6A-25A) Overhaul Manual P/N (PT6A-25C) Overhaul Manual P/N (PT6A-34, PT6A-34AG, PT6A-34B, PT6A-35, PT6A-36, PT6A-114, PT6A-114A, PT6A-135, PT6A-135A) P&WC S.B. No. 1453, SB1268, SB1267, SB1206, SB1214, SB1120, SB1499, SB1252, SB1405 (Conversion Bulletin) PWA Overhaul Standard Practices Manual P/N P&WC S.B. No L. Publications Affected Illustrated Parts Catalog P/N (PT6A-21, PT6A-27, PT6A-28) Illustrated Parts Catalog P/N (PT6A-25, PT6A-25A) Illustrated Parts Catalog P/N (PT6A-25C) Illustrated Parts Catalog P/N (PT6A-34, PT6A-34AG, PT6A-34B, PT6A-36) Illustrated Parts Catalog P/N (PT6A-114, PT6A-114A, PT6A-135, PT6A-135A) M. Interchangeability and Intermixability of Parts Not applicable. 2. Material Information A. Industry Support Information Not applicable. B. Material - Cost and Availability You can get the procurable parts listed in Para. 2.C. from any Pratt & Whitney Canada Parts Distribution Center. CT Disk Balancing Assembly The estimated total cost of new parts needed to replace old parts is $ (US, 1997). The new parts are available. CT Blades replacement The estimated total cost of new parts needed to replace old parts is $ (US, 1997). The new parts are available. Aug 19/1997 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 5: Nov 25/2013 Page 3 of 5

52 P&WC S.B. No. 1521R5 PRATT & WHITNEY CANADA COMPRESSOR TURBINE DISK BALANCING ASSEMBLY AND BLADES - REPLACEMENT/MODIFICATION OF C. Material Necessary for Each Engine The quantity of materials listed in this section is on a per Engine basis. New P/N Keyword Old P/N Qty Est. Unit List Price ($US, 1997) Instructions Disposition PT6A-21, PT6A-25, PT6A-25A, PT6A-25C, PT6A-27, PT6A-28, PT6A-34, PT6A-34AG, PT6A-34B, PT6A-36 engine models: Blade - Turbine (A) Consumable Materials Required: Rivet - Tubular, x Countersunk For information only: For PT6A-114, PT6A-114A and PT6D-114A engine models: Disk Balancing Assembly (A)(B) Compressor Turbine Ê Blade - Turbine (A) (A) TWO WAY INTERCHANGEABLE - (ATA 200 Explanation Code 02): The old or the new part can replace the old or the new part. (B) To get the new part it is possible to make a modification to the old part, or you can get the new part from any Pratt & Whitney Canada Distribution Center. D. Reidentified Parts The following list of parts can be reworked: OLD P/N NEW P/N E. Tooling - Price and Availability Not applicable. 3. Accomplishment Instructions A. Refer to the overhaul manual for instructions: (1) For all engine models (excluding PT6A-34, PT6A-34AG, PT6A-34B, PT6A-36, PT6A-114, -114A and PT6D-114A): Aug 19/1997 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 5: Nov 25/2013 Page 4 of 5

53 PRATT & WHITNEY CANADA P&WC S.B. No. 1521R5 COMPRESSOR TURBINE DISK BALANCING ASSEMBLY AND BLADES - REPLACEMENT/MODIFICATION OF 3. Accomplishment Instructions (Cont d) (a) Remove 58 rivets P/N (b) Remove 58 compressor turbine blades P/N (c) (d) Install 58 new compressor turbine blades P/N with 58 new rivets P/N Write P&WC S.B. No Incorporated in the engine log book. NOTE: Engines incorporating less than the full set of the compressor turbine blades P/N , write in the engine log book the number of the new blades installed. 4. Appendix Not applicable. Aug 19/1997 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 5: Nov 25/2013 Page 5 of 5

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55 BULLETIN INDEX LOCATOR FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF MODEL APPLICATION PT6A-6, PT6A-6A, PT6A-6B, PT6A-20, PT6A-20A, PT6A-20B, PT6A-21, PT6A-25, PT6A-25A, PT6A-25C, PT6A-27, PT6A-28, PT6A-34, PT6A-34B, PT6A-34AG, PT6A-36, PT6A-114, PT6A-114A, PT6A-135, PT6A-135A Compliance: CATEGORY 7 PRATT & WHITNEY CANADA P&WC S.B. No. 1568R7 Summary: The supplier of the Fuel Control Unit (FCU) can no longer provide the unit as currently defined. The current design of the unit s P3 bellows assembly has been discontinued. Introduce a new FCU which has a new P3 bellows assembly. Apr 19/1999 Revision No. 7: Oct 24/2013 PT6A Cover Sheet 24-Hour Global Service USA & CANADA Other CFIRST CENTRE International... (IAC*) Fax Toll free where available (SIL GEN-027) * International Access Code Web Site...

56 WARNING - PROPRIETARY RIGHTS & EXPORT CONTROLS NOTICE This bulletin contains proprietary information of Pratt & Whitney Canada Corp. ( P&WC ), which P&WC provides in confidence and solely for the purposes of supporting engine certification and providing applicable information regarding the proper use, maintenance, inspection, repair, servicing and parts application of P&WC products and services, as directed therein. Neither this bulletin nor any information in it may be disclosed to others, or used for any other purpose, including, without limitation, to design, create, develop, reproduce, manufacture or derive any design, part, product, material, process, modification, configuration change or repair, or obtain FAA or other government approval to do so. Possession and use of this bulletin is also subject to the restrictions set out in P&WC s Technical Data Agreement (a copy of which may be obtained by contacting P&WC Technical Publications). The contents of this bulletin may be subject to export control laws. Unauthorized export or re-export of the bulletin, or parts thereof, is prohibited. By accepting and possessing this bulletin, you agree to be bound by the foregoing terms. If a Government agency or department intends to disclose any information, written notice should be given to: VP - Legal Services, Pratt & Whitney Canada Corp., 1000 Marie-Victorin (01BE5), Longueuil, Quebec J4G 1A1. Export Control Classification *Data is subject to the jurisdiction of the Export and Import Controls Bureau of the Department of Foreign Affairs and International Trade of Canada, Department of Commerce of the United States and/or Department of State of the United States. ** Data is not subject to the jurisdiction of the Department of Commerce of the United States or Department of State of the United States but would become subject if exposed to any US involvement. Regulation Canadian ECL(s)* ECCN(s)* P-ECCN(s)** USML (ITAR)* P-USML** Classification Number 9E991

57 Pratt & Whitney Canada Corp. 1000, Marie-Victorin Longueuil, Québec, Canada J4G 1A1 Tél October 2013 P&WC S.B. No. 1568R7 REVISION TRANSMITTAL SHEET MODEL PT6A SUBJECT: Pratt & Whitney Canada Service Bulletin No. PT6A , Rev. No. 7, dated Oct 24/2013 (P&WC S.B. No. 1568R7) FUEL CONTROL UNIT - MODIFICATION/ REPLACEMENT OF Replace your existing copy of this service bulletin with the attached revised bulletin. Destroy the superseded copy. Please retain this Revision Transmittal Sheet with the revised bulletin. SUMMARY: This service bulletin is revised to correct the engine serial numbers in Para. 1.A., Planning Information. EFFECT OF REVISION ON PRIOR ACCOMPLISHMENT: None. NOTE: A black bar in the left margin indicates a change in that line of text or figure. REVISION HISTORY: Original Issue: Apr 19/1999 Revision No. 1: Aug 08/2000 Revision No. 2: Sep 07/2001 Revision No. 3: Feb 28/2005 Revision No. 4: May 06/2005 Revision No. 5: Oct 31/2007 Revision No. 6: Nov 16/2007 Revision No. 7: Oct 24/2013

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59 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF P&WC S.B. No. 1568R7 1. Planning Information A. Effectivity PT6A-6 Engines. PT6A-6A Engines. PT6A-6B Engines. PT6A-20 Engines. PT6A-20A Engines. PT6A-20B Engines. PT6A-21 Engines which are before and include Serial No. PCE-PE0193 and Serial No. PCE thru PCE PT6A-25 Engines which are before and include Serial No. PCE PT6A-25A Engines which are before and include Serial No. PCE PT6A-25C Engines which are before and include Serial No. PCE-PF0043 and Serial No. PCE thru PCE PT6A-27 Engines which are before and include Serial No. PCE-PG0069 and Serial No. PCE thru PCE-42771, PCE thru PCE PT6A-28 Engines which are before and include Serial No. PCE PT6A-34 Engines which are before and include Serial No. PCE-RB0045 and Serial No. PCE thru PCE PT6A-34AG Engines which are before and include Serial No. PCE-PH0165, and Serial No. PCE thru PCE PT6A-34B Engines which include Serial No. PCE thru PCE PT6A-36 Engines which are before and include Serial No. PCE PT6A-114 Engines which are before and include Serial No. PCE-PB0527 and Serial No. PCE thru PCE PT6A-114A Engines which are before and include Serial No. PCE-PC0655 and Serial No. PCE thru PCE PT6A-135 Engines which are before and include Serial No. PCE-RE0002 and Serial No. PCE thru PCE PT6A-135A Engines which are before and include Serial No. PCE-PZ0023 and Serial No. PCE thru PCE B. Concurrent Requirements None. C. Reason (1) Problem The Fuel Control Unit (FCU) supplier can no longer provide the unit as currently defined. (2) Cause The supplier of the P3 bellows assembly has discontinued this bellows design. P&WC No. C4379B, C4379C, C4379R, C4379T, C9985E, C9985C, C9985J, C9985N, DCR21029 Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/ Pratt & Whitney Canada Corp. Page 1 of 35 PRINTED IN CANADA

60 P&WC S.B. No. 1568R7 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF 1. Planning Information (Cont d) (3) Solution D. Description Introduce a new FCU which has a new P3 bellows assembly. Replace or modify the FCU. E. Compliance CATEGORY 7 - You can do this service bulletin when the supply of superseded parts is fully used. F. Approval D.O.T./D.A.A. approved. G. Manpower Once you have access to the part, an estimate of 2 man-hours is required to include this service bulletin at maintenance. No more man-hours are necessary to include this service bulletin at overhaul. H. Weight and Balance None. I. Electrical Load Data Not changed. J. Software Accomplishment Summary Not applicable. K. References Illustrated Parts Catalog P/N (PT6A-6, PT6A-6A, PT6A-6B, PT6A-20, PT6A-20A, PT6A-20B) Illustrated Parts Catalog P/N (PT6A-21, PT6A-27, PT6A-28) Illustrated Parts Catalog P/N (PT6A-25, PT6A-25A) Illustrated Parts Catalog P/N (PT6A-25C) Illustrated Parts Catalog P/N (PT6A-34, PT6A-34AG, PT6A-34B, PT6A-36) Illustrated Parts Catalog P/N (PT6A-114, PT6A-114A, PT6A-135, PT6A-135A) Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 2 of 35

61 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF P&WC S.B. No. 1568R7 1. Planning Information (Cont d) For P/N Honeywell Inc. SB No Component Maintenance Manual P/N For P/N Honeywell Inc. SB No Component Maintenance Manual P/N For P/N Honeywell Inc. SB No For P/N Honeywell Inc. SB No Component Maintenance Manual P/N For P/N Honeywell Inc. SB No Component Maintenance Manual P/N For P/N Honeywell Inc. SB No Component Maintenance Manual P/N For P/N Honeywell Inc. SB No Component Maintenance Manual P/N For P/N Honeywell Inc. SB No Component Maintenance Manual P/N For P/N Honeywell Inc. SB No For P/N Honeywell Inc. SB No Component Maintenance Manual P/N Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 3 of 35

62 P&WC S.B. No. 1568R7 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF 1. Planning Information (Cont d) For P/N Honeywell Inc. SB No Component Maintenance Manual P/N For P/N Honeywell Inc. SB No Component Maintenance Manual P/N For P/N Honeywell Inc. SB No Component Maintenance Manual P/N For P/N Honeywell Inc. SB No Component Maintenance Manual P/N L. Publications Affected Illustrated Parts Catalog P/N (PT6A-6, PT6A-6A, PT6A-6B, PT6A-20, PT6A-20A, PT6A-20B) Illustrated Parts Catalog P/N (PT6A-21, PT6A-27, PT6A-28) Illustrated Parts Catalog P/N (PT6A-25, PT6A-25A) Illustrated Parts Catalog P/N (PT6A-25C) Illustrated Parts Catalog P/N (PT6A-34, PT6A-34AG, PT6A-34B, PT6A-36) Illustrated Parts Catalog P/N (PT6A-114, PT6A-114A, PT6A-135, PT6A-135A) M. Interchangeability and Intermixability of Parts Interchangeability - Refer to Para. 2.C. Intermixability - Not changed. 2. Material Information A. Industry Support Information Not applicable. B. Material - Cost and Availability You can get the procurable parts listed in Para. 2.C. from any Pratt & Whitney Canada Parts Distribution Center. Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 4 of 35

63 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF P&WC S.B. No. 1568R7 2. Material Information (Cont d) The estimated total cost of new parts needed to replace old parts is $Quote (US, 2007). The new parts are available. Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 5 of 35

64 P&WC S.B. No. 1568R7 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF 2. Material Information (Cont d) C. Material Necessary for Each Engine The quantity of materials listed in this section is on a per Engine basis. Est. Unit List Price New P/N Keyword Old P/N Qty ($US, 2007) Instructions Disposition For Engines PT6A-6, PT6A-6A, PT6A-6B, PT6A-20, PT6A-20A, PT6A-20B: Fuel Control, Turboprop P&WC P/N (A)(B) Fuel Control, Turboprop P&WC P/N For Engine PT6A-21: Fuel Control, Turboprop P&WC P/N Fuel Control Unit (P&WC P/N ) Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N For Engine PT6A-25 (BS734): Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N Quote (C) (A)(B) 1 43, (C) (A)(B) 1 Quote (C) (A)(B) 1 Quote (C) Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 6 of 35

65 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF P&WC S.B. No. 1568R7 Est. Unit List Price New P/N Keyword Old P/N Qty ($US, 2007) Instructions Disposition For Engines PT6A-25, PT6A-25A: Fuel Control, Turboprop P&WC P/N (A)(B) Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N For Engine PT6A-25C: Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N For Engine PT6A-27: Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N , (C) (A)(B) 1 Quote (C) (A)(B) 1 Quote (C) (A)(B) 1 Quote (C) (A)(B) 1 Quote (C) Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 7 of 35

66 P&WC S.B. No. 1568R7 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF Est. Unit List Price New P/N Keyword Old P/N Qty ($US, 2007) Instructions Disposition Fuel Control, Turboprop P&WC P/N (A)(B) Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N For Engine PT6A-28: Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N For Engine PT6A-34: Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N Quote (C) (A)(B) 1 51, (C) (A)(B) 1 Quote (C) (A)(B) 1 Quote (C) (A)(B) 1 Quote (C) (A)(B) Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 8 of 35

67 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF P&WC S.B. No. 1568R7 Est. Unit List Price New P/N Keyword Old P/N Qty ($US, 2007) Instructions Disposition Fuel Control, Turboprop P&WC P/N Quote (C) Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N For Engine PT6A-34B: Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N For Engine PT6A-34AG: Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N (A)(B) 1 49, (C) (A)(B) 1 Quote (C) (A)(B) 1 Quote (C) (A)(B) 1 Quote (C) (A)(B) 1 Quote (C) Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 9 of 35

68 P&WC S.B. No. 1568R7 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF Est. Unit List Price New P/N Keyword Old P/N Qty ($US, 2007) Instructions Disposition Fuel Control, Turboprop P&WC P/N (A)(B) Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N For Engine PT6A-36 (BS621): Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N For Engine PT6A-36: Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N Quote (C) (A)(B) 1 51, (C) (A)(B) 1 Quote (C) (A)(B) 1 Quote (C) (A)(B) 1 Quote (C) (A)(B) Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 10 of 35

69 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF P&WC S.B. No. 1568R7 Est. Unit List Price New P/N Keyword Old P/N Qty ($US, 2007) Instructions Disposition Fuel Control, Turboprop P&WC P/N Quote (C) Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N For Engine PT6A-114: Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N For Engine PT6A-114A: Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N (A)(B) 1 Quote (C) (A)(B) 1 Quote (C) (A)(B) 1 Quote (C) (A)(B) 1 Quote (C) (A)(B) 1 Quote (C) Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 11 of 35

70 P&WC S.B. No. 1568R7 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF Est. Unit List Price New P/N Keyword Old P/N Qty ($US, 2007) Instructions Disposition Fuel Control, Turboprop Supplier(06848) P&WC P/N (A)(B) Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N For Engine PT6A-135: Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N For Engine PT6A-135A: Fuel Control, Turboprop P&WC P/N Quote (C) (A)(B) 1 Quote (C) (A)(B) 1 Quote (C) (A)(B) 1 Quote (C) (A)(B) 1 49, (C) (A)(B) Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 12 of 35

71 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF P&WC S.B. No. 1568R7 Est. Unit List Price New P/N Keyword Old P/N Qty ($US, 2007) Instructions Disposition Fuel Control, Turboprop P&WC P/N Quote (C) Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N For Engines PT6A-135 and PT6A-135A: Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N For Engine PT6D-114A: Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N Fuel Control, Turboprop P&WC P/N (A)(B) 1 Quote (C) (A)(B) 1 49, (C) (A)(B) 1 Quote (C) (A)(B) 1 Quote (C) (A)(B) 1 48, (C) Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 13 of 35

72 P&WC S.B. No. 1568R7 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF New P/N Keyword Old P/N Qty Est. Unit List Price ($US, 2007) (A) TWO WAY INTERCHANGEABLE - (ATA 200 Explanation Code 02): The old or the new part can replace the old or the new part. (B) Instructions Disposition Return the old part(s) to:an authorized accessory shop that can do the modification, or send to: (C) Pratt & Whitney Canada Accessories Services 333 rue d Auvergne (Area 2K) Longueuil Quebec Canada J4H 3Y3 TEL: (450) FAX: (450) To get the new part it is possible to make a modification to the old part, or you can get the new part from any Pratt & Whitney Canada Distribution Center. D. Reidentified Parts The following list of parts can be reworked: OLD P/N NEW P/N (P&WC P/N ) (P&WC P/N ) (P&WC P/N ) (P&WC P/N ) (P&WC P/N ) (P&WC P/N ) (P&WC P/N ) (P&WC P/N ) (P&WC P/N ) (P&WC P/N ) (P&WC P/N ) (P&WC P/N ) (P&WC P/N ) (P&WC P/N ) (P&WC P/N ) (P&WC P/N ) Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 14 of 35

73 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF P&WC S.B. No. 1568R7 OLD P/N NEW P/N (P&WC P/N ) (P&WC P/N ) (P&WC P/N ) (P&WC P/N ) (P&WC P/N ) (P&WC P/N ) (P&WC P/N ) (P&WC P/N ) (P&WC P/N ) (P&WC P/N ) (P&WC P/N ) (P&WC P/N ) (P&WC P/N ) (P&WC P/N ) E. Tooling - Price and Availability Not applicable. 3. Accomplishment Instructions A. Remove the parts listed under old P/N in Para. 2.C., Material Information, per the applicable maintenance manual instructions. B. Install the parts listed under New P/N in Para. 2.C., Material Information, refer to the applicable maintenance manual instructions. C. Write accomplishment of P&WC S.B. No in the applicable engine module log book. 4. Appendix A. Refer to Figure 1 for the PT6A-6/6A/6B and PT6A-20/20A/20B FCU - Part Progression. B. Refer to Figure 2 for the PT6A-21 FCU - Part Progression. C. Refer to Figure 3 for the PT6A-25 (BS734) FCU - Part Progression. D. Refer to Figure 4 for the PT6A-25/25A FCU - Part Progression. E. Refer to Figure 5 for the PT6A-25C FCU - Part Progression. F. Refer to Figure 6 for the PT6A-27/28 FCU - Part Progression. Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 15 of 35

74 P&WC S.B. No. 1568R7 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF 4. Appendix (Cont d) G. Refer to Figure 7 for the PT6A-34/34B/34AG FCU - Part Progression. H. Refer to Figure 8 for the PT6A-36 (BS621) FCU - Part Progression. I. Refer to Figure 9 for the PT6A-36 FCU - Part Progression. J. Refer to Figure 10 for the PT6A-114/114A FCU - Part Progression. K. Refer to Figure 11 for the PT6A-135/135A FCU - Part Progression. Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 16 of 35

75 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF P&WC S.B. No. 1568R ( ) ( ) ( ) ( ) PD ( ) PD273/ ( A) ( B) PD ( C) ( D) PD ( ) PD273/ ( ) SB ( ) ( ) PD273/ ( ) SB1561 IMPROVED BEARINGS CC6 PRC ( ) SB1568 NEW P3 BELLOWS CC7 PRC02 C72961 PT6A-6/6A/6B, PT6A-20/20A/20B FCU - Part Progression Figure 1 Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 17 of 35

76 P&WC S.B. No. 1568R7 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF ( ) ( ) ( A) ( ) SB1561 Improved Bearing CC 6 PRC ( ) SB1568 New P3 Bellows CC 7 PRC ( ) SB1561 Improved Bearing CC 6 PRC ( ) SB1568 New P3 Bellows CC 7 PRC 02 C66761A PT6A-21 FCU - Part Progression Figure 2 Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 18 of 35

77 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF P&WC S.B. No. 1568R ( ) ( ) SB1472 CC 5 PRC ( ) SB1547 CC 8 PRC ( ) SB1561 CC 6 PRC ( ) SB1568 CC 7 PRC 02 PT6A-25 (BS734) FCU - Part Progression Figure 3 C Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 19 of 35

78 P&WC S.B. No. 1568R7 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF ( A) SEE SHEET ( D) SB ( E) PD ( ) SB1353 CC 5 PRC ( B) ( ) SB1472 CC 5 PRC ( ) SB1547 CC 8 PRC 02 C66770B PT6A-25/25A FCU - Part Progression Figure 4 (Sheet 1 of 2) Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 20 of 35

79 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF P&WC S.B. No. 1568R7 SEE SHEET ( ) PD ( ) SB ( ) PD ( B) ( ) SB1561 Improved Bearing CC 6 PRC ( ) SB1568 New P3 Bellows CC 7 PRC ( ) SB1472 CC 5 PRC ( ) SB1561 Improved Bearing CC 6 PRC ( ) SB1568 New P3 Bellows CC 7 PRC 02 C66771A PT6A-25/25A FCU - Part Progression Figure 4 (Sheet 2) Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 21 of 35

80 P&WC S.B. No. 1568R7 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF ( A) ( ) SB ( ) ( B) SB1469 CC 6 PRC ( C) SPB ( ) SB1472 CC 5 PRC ( ) SB1561 Improved Bearing CC 6 PRC ( ) SB1561 Improved Bearing CC 6 PRC ( ) SB1568 New P3 Bellows CC 7 PRC ( ) SB1568 New P3 Bellows CC 7 PRC 02 C66773B PT6A-25C FCU - Part Progression Figure 5 Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 22 of 35

81 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF P&WC S.B. No. 1568R7 SEE SHEET ( ) ( C) ( E) PD ( ) SB1475 CC 8 PRC 01 (JET CRUZER) ( ) ( ) SB1561 Improved Bearing CC 6 PRC ( ) SB1568 New P3 Bellows CC 7 PRC ( ) SB1561 Improved Bearing CC 6 PRC ( ) SB1568 New P3 Bellows CC 7 PRC 02 C66762B PT6A-27/28 FCU - Part Progression Figure 6 (Sheet 1 of 2) Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 23 of 35

82 P&WC S.B. No. 1568R7 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF SEE SHEET ( ) SB1469 CC 6 PRC ( A) ( ) ( ) SB1472 CC 5 PRC ( ) SB1561 Improved Bearing CC 6 PRC ( ) SB1568 New P3 Bellows CC 7 PRC 02 C66766B PT6A-27/28 FCU - Part Progression Figure 6 (Sheet 2) Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 24 of 35

83 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF P&WC S.B. No. 1568R ( C) Basic A ( E) PD1995 Basic A34B/A34AG ( ) SB ( ) SB ( ) SB1374 FCU Recalibration CC 6 PRC ( ) SB1475 New Roller Cam CC 8 PRC 01 SEE SHEET ( ) SB1561 Improved Bearing CC 6 PRC ( ) SB1568 New P3 Bellows CC 7 PRC 02 SEE SHEET 2 C66785C PT6A-34/34B/34AG FCU - Part Progression Figure 7 (Sheet 1 of 4) Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 25 of 35

84 P&WC S.B. No. 1568R7 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF SEE SHEET ( ) SB ( ) ( ) SB1461 CSU ( ) SB1561 Improved Bearing CC 6 PRC ( ) SB1568 New P3 Bellows CC 7 PRC 02 C66786B PT6A-34/34B/34AG FCU - Part Progression Figure 7 (Sheet 2) Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 26 of 35

85 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF P&WC S.B. No. 1568R7 SEE SHEET ( ) SB1469 FCU with Manual Override CC 6 PRC ( A) ( ) SB1472 Additional Spring CC 5 PRC ( ) SB1557 New BS970 Single Line CC 8 PRC ( ) SB1566 Additional Bracket CC 6 PRC ( ) SB1566 Additional Bracket and Meldin Bearing CC 6 PRC ( ) SB1561 Improved Bearing CC 6 PRC ( ) SB1561 Improved Bearing CC 6 PRC ( ) SB1568 New P3 Bellows CC 7 PRC ( ) SB1568 New P3 Bellows CC 7 PRC ( ) SB1568 New P3 Bellows CC 7 PRC 02 C66787B PT6A-34/34B/34AG FCU - Part Progression Figure 7 (Sheet 3) Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 27 of 35

86 P&WC S.B. No. 1568R7 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF BS952/BS ( ) ( ) ( B) ( ) SB ( C) PB ( ) ( ) SB1561 Improved Bearing CC 6 PRC ( ) SB1561 Improved Bearing CC 6 PRC ( ) SB1568 New P3 Bellows CC 7 PRC ( ) SB1568 New P3 Bellows CC 7 PRC 02 C66788B PT6A-34/34B/34AG FCU - Part Progression Figure 7 (Sheet 4) Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 28 of 35

87 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF P&WC S.B. No. 1568R ( ) ( ) PD2227 CC 6 PRC ( ) SB1561 CC 6 PRC ( ) SB1568 CC 7 PRC 02 PT6A-36 (BS621) FCU - Part Progression Figure 8 C Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 29 of 35

88 P&WC S.B. No. 1568R7 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF ( E) Basic ( ) SB ( ) ( ) SB ( ) SB1366 SEE SHEET ( ) SB ( ) SB1374 FCU Recalibration CC 6 PRC ( ) SB1475 New Roller Cam CC 8 PRC 01 SEE SHEET ( ) SB1561 Improved Bearing CC 6 PRC ( ) SB1561 Improved Bearing CC 6 PRC ( ) SB1568 New P3 Bellows CC 7 PRC ( ) SB1568 New P3 Bellows CC 7 PRC 02 C66791C PT6A-36 FCU - Part Progression Figure 9 (Sheet 1 of 3) Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 30 of 35

89 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF P&WC S.B. No. 1568R7 SEE SHEET ( ) ( B) ( C) SPB ( ) ( ) SB1561 Improved Bearing CC 6 PRC ( ) SB1568 New P3 Bellows CC 7 PRC 02 PT6A-36 FCU - Part Progression Figure 9 (Sheet 2) C66793A Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 31 of 35

90 P&WC S.B. No. 1568R7 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF SEE SHEET ( ) ( A) ( ) ( ) SB1561 Improved Bearing CC 6 PRC ( ) SB1568 New P3 Bellows CC 7 PRC 02 C66798B PT6A-36 FCU - Part Progression Figure 9 (Sheet 3) Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 32 of 35

91 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF P&WC S.B. No. 1568R ( ) ( ) ( B) (0IR ) SB1525 A 114A Only ( C) SPB ( ) SB1561 Improved Bearing CC 6 PRC ( ) SB1568 New P3 Bellows CC 7 PRC ( ) SPB ( ) SB1525 A 114A Only CC 8 PRC ( ) SB1561 Improved Bearing CC 6 PRC ( ) SB1568R5 New P3 Bellows CC 7 PRC 02 SEE SHEET 2 C73919D PT6A-114/114A FCU - Part Progression Figure 10 (Sheet 1 of 2) Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 33 of 35

92 P&WC S.B. No. 1568R7 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF SEE SHEET ( A) SB1529 PT6A 114A Only CC 8 PRC ( ) SB1535 PT6A 114A Only CC 7 PRC ( ) SB1561 PT6A 114A Only Improved Bearings CC 6 PRC ( ) SB1568 PT6A 114A Only New P3 Bellows CC 7 PRC 02 C66767B PT6A-114/114A FCU - Part Progression Figure 10 (Sheet 2) Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 34 of 35

93 PRATT & WHITNEY CANADA FUEL CONTROL UNIT - MODIFICATION/REPLACEMENT OF P&WC S.B. No. 1568R ( ) ( C) ( C) ( ) PD ( E) PD ( ) SB1472 CC 5 PRC ( ) SB1561 Improved Bearing CC 6 PRC ( B) ( C) SPB39 CC 9 PRC ( ) SB1472/1546 CC 5 PRC ( ) SB1561 CC 6 PRC ( ) SB ( ) SB ( ) SB1475 CC 8 PRC ( ) SB1561 Improved Bearings CC 6 PRC ( ) SB1475 CC 8 PRC ( ) SB1561 CC 6 PRC ( ) SB1568 CC 7 PRC ( ) SB1568 New P3 Bellows CC 7 PRC ( ) SB1568 CC 7 PRC ( ) SB1568 New P3 Bellows CC 7 PRC 02 C73918A PT6A-135/135A FCU - Part Progression Figure 11 Apr 19/1999 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 7: Oct 24/2013 Page 35 of 35

94

95 PRATT & WHITNEY CANADA BULLETIN INDEX LOCATOR COMPRESSOR BLEED OFF VALVE - REPLACEMENT OF MODEL APPLICATION PT6A-114A P&WC S.B. No. 1588R2 Commercial Support Program No: A99013 Compliance: CATEGORY 7 Summary: The compressor bleed valve requires further refinement of the orifice pack, because the adjustment of the orifice pack is not fully linear. A new compressor bleed valve incorporating an improved orifice pack is introduced. Feb 18/2000 Revision No. 2: Oct 24/2013 PT6A Cover Sheet 24-Hour Global Service USA & CANADA Other CFIRST CENTRE International... (IAC*) Fax Toll free where available (SIL GEN-027) * International Access Code Web Site...

96 WARNING - PROPRIETARY RIGHTS & EXPORT CONTROLS NOTICE This bulletin contains proprietary information of Pratt & Whitney Canada Corp. ( P&WC ), which P&WC provides in confidence and solely for the purposes of supporting engine certification and providing applicable information regarding the proper use, maintenance, inspection, repair, servicing and parts application of P&WC products and services, as directed therein. Neither this bulletin nor any information in it may be disclosed to others, or used for any other purpose, including, without limitation, to design, create, develop, reproduce, manufacture or derive any design, part, product, material, process, modification, configuration change or repair, or obtain FAA or other government approval to do so. Possession and use of this bulletin is also subject to the restrictions set out in P&WC s Technical Data Agreement (a copy of which may be obtained by contacting P&WC Technical Publications). The contents of this bulletin may be subject to export control laws. Unauthorized export or re-export of the bulletin, or parts thereof, is prohibited. By accepting and possessing this bulletin, you agree to be bound by the foregoing terms. If a Government agency or department intends to disclose any information, written notice should be given to: VP - Legal Services, Pratt & Whitney Canada Corp., 1000 Marie-Victorin (01BE5), Longueuil, Quebec J4G 1A1. Export Control Classification *Data is subject to the jurisdiction of the Export and Import Controls Bureau of the Department of Foreign Affairs and International Trade of Canada, Department of Commerce of the United States and/or Department of State of the United States. ** Data is not subject to the jurisdiction of the Department of Commerce of the United States or Department of State of the United States but would become subject if exposed to any US involvement. Regulation Canadian ECL(s)* ECCN(s)* P-ECCN(s)** USML (ITAR)* P-USML** Classification Number 9E991

97 Pratt & Whitney Canada Corp. 1000, Marie-Victorin Longueuil, Québec, Canada J4G 1A1 Tél October 2013 P&WC S.B. No. 1588R2 REVISION TRANSMITTAL SHEET MODEL PT6A SUBJECT: Pratt & Whitney Canada Service Bulletin No. PT6A , Rev. No. 2, dated Oct 24/2013 (P&WC S.B. No. 1588R2) COMPRESSOR BLEED OFF VALVE - REPLACEMENT OF Replace your existing copy of this service bulletin with the attached revised bulletin. Destroy the superseded copy. Please retain this Revision Transmittal Sheet with the revised bulletin. SUMMARY: This service bulletin is revised to change the torque value of self locking screw in Para. 3.E., Accomplishment Instructions. EFFECT OF REVISION ON PRIOR ACCOMPLISHMENT: None. NOTE: A black bar in the left margin indicates a change in that line of text or figure. REVISION HISTORY: Original Issue: Feb 18/2000 Revision No. 1: Jan 31/2001 Revision No. 2: Oct 24/2013

98

99 PRATT & WHITNEY CANADA COMPRESSOR BLEED OFF VALVE - REPLACEMENT OF P&WC S.B. No. 1588R2 1. Planning Information A. Effectivity PT6A-114A Engines that incorporate P&WC S.B. No which are before and include Serial No. PCE-PC0771, Serial No. PCE thru PCE and all engines converted to Engine Model PT6A-114A (Ref. P&WC engine conversion SB1453). B. Concurrent Requirements None. C. Reason (1) Problem The compressor bleed valve requires further refinement of the orifice pack. (2) Cause The adjustment of the orifice pack is not fully linear. (3) Solution D. Description Introduce a new compressor bleed valve incorporating an improved orifice pack. Remove and replace the Bleed Off Valve (BOV) with a new one. E. Compliance CATEGORY 7 - You can do this service bulletin when the supply of superseded parts is fully used. F. Approval D.O.T./D.A.A. approved. G. Manpower Once you have access to the part, an estimate of 1.0 man-hours is required to include this service bulletin at maintenance. No more man-hours are necessary to include this service bulletin at overhaul. H. Weight and Balance The engine weight will increase by 0.10 pounds (0.05 kgs). P&WC No. C2814L, DCR21030 Feb 18/2000 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 2: Oct 24/ Pratt & Whitney Canada Corp. Page 1 of 12 PRINTED IN CANADA

100 P&WC S.B. No. 1588R2 PRATT & WHITNEY CANADA COMPRESSOR BLEED OFF VALVE - REPLACEMENT OF 1. Planning Information (Cont d) The effect of weight change on the engine center of gravity is negligible. I. Electrical Load Data Not changed. J. Software Accomplishment Summary Not applicable. K. References Illustrated Parts Catalog P/N (PT6A-114, PT6A-114A, PT6A-135, PT6A-135A) Honeywell (Grimes Aerospace) SB SB02 L. Publications Affected Illustrated Parts Catalog P/N (PT6A-114, PT6A-114A, PT6A-135, PT6A-135A) Honeywell (Grimes Aerospace) CMM M. Interchangeability and Intermixability of Parts Interchangeability - Refer to Para. 2.C. Intermixability - Not changed. 2. Material Information A. Industry Support Information Please refer to Commercial Support Program Notification (CSPN) A99013 B. Material - Cost and Availability You can get the procurable parts listed in Para. 2.C. from any Pratt & Whitney Canada Parts Distribution Center. The estimated total cost of new parts needed to replace old parts is $7, (US, 2000). The new parts are scheduled to be available in Mar Feb 18/2000 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 2: Oct 24/2013 Page 2 of 12

101 PRATT & WHITNEY CANADA COMPRESSOR BLEED OFF VALVE - REPLACEMENT OF P&WC S.B. No. 1588R2 C. Material Necessary for Each Engine The quantity of materials listed in this section is on a per Engine basis. Est. Unit List Price New P/N Keyword Old P/N Qty ($US, 2000) Instructions Disposition Valve Assembly, Compressor Bleed Vendor (077L2) P&WC P/N (A)(B)(C) Valve Assembly, Compressor Bleed Vendor (077L2) P&WC P/N , (A)(B) (A) TWO WAY INTERCHANGEABLE - (ATA 200 Explanation Code 02): The old or the new part can replace the old or the new part. (B) To get the new part it is possible to make a modification to the old part, or you can get the new part from any Pratt & Whitney Canada Distribution Center. (C) Return the old part(s) to: Honeywell Aerospatiale Inc. 200 Marcel-Laurin Blv. Montreal Quebec Canada TEL: D. Reidentified Parts The following list of parts can be reworked: OLD P/N NEW P/N P&WC P/N P&WC P/N E. Tooling - Price and Availability Tool No. Nomenclature Est. Price ($US, 2000) Delivery PWC Thermocouple probe and extension cable QUOTE Feb 18/2000 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 2: Oct 24/2013 Page 3 of 12

102 P&WC S.B. No. 1588R2 PRATT & WHITNEY CANADA COMPRESSOR BLEED OFF VALVE - REPLACEMENT OF Est. Price Tool No. Nomenclature ($US, 2000) PWC Thermocouple probe QUOTE Delivery 3. Accomplishment Instructions CAUTION: THE BOV P/N IS FOR USE ON PT6A-114A ENGINES INCORPORATING SB1510 ONLY. NOTE: 1. BOV is preset to a Px suitable for operation on PT6A-114A engines with SB1510 incorporated. NOTE: 2. Comply with the airframe manual requirements prior to running the engine. A. Do an engine performance check per applicable maintenance manual instructions and acceleration check (Ref ) to verify engine baseline performance and acceleration. B. Remove the BOV under old P/N in Para. 2.C Material Information, per the applicable maintenance or overhaul manual instructions. C. Install the BOV under New P/N in Para. 2.C Material Information, per the applicable maintenance or overhaul manual instructions. D. Do an engine performance check per applicable maintenance manual instructions and acceleration check (Ref ) and make sure no significant change in performance or acceleration has occurred. E. If the engine shows a significant shift in performance, acceleration or an engine surge occurs, verify the closing point of the BOV as follows: CAUTION: BE CAREFUL TO ENSURE THAT THE BOV CAN OPERATE WITHOUT INTERFERENCE FROM THE PROBE. (1) Install thermocouple P/N PWC or P/N PWC (Ref. Fig. 1) and extension cable on the BOV (Ref. Fig. 2). NOTE: It is recommended to remove the L shaped bracket from the thermocouple and to secure the thermocouple to the BOV using the clamp provided with P/N PWC and P/N PWC (2) Connect the connector to a multimeter which has a 50 mv full scale deflection, or to a Fluke temperature readout or to a Barfield tester. (3) Set the cabin bleed air switch to OFF. Feb 18/2000 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 2: Oct 24/2013 Page 4 of 12

103 PRATT & WHITNEY CANADA COMPRESSOR BLEED OFF VALVE - REPLACEMENT OF P&WC S.B. No. 1588R2 3. Accomplishment Instructions (Cont d) (4) Start the engine and slowly increase power up to MAX. NOTE: Ensure that the multimeter shows a reading, which gradually decreases and becomes stable as full power is applied. (5) Slowly reduce power until the multimeter or the temperature indicator just begins to indicate an increase in voltage or in temperature (BOV closing point). Record Ng and OAT at this point. (6) Reduce power to IDLE and shut down the engine. (7) Plot the value of Ng at measured OAT as recorded in Step (5), on Figure 3. (8) Adjust the BOV closing point, as required and repeat steps (3) thru (7), in order that Ng at BOV closing point falls within the guide lines as shown on Figure 3. NOTE: The closing point is adjusted by rotation of the adjustment screw (Ref. Fig. 4). A 60 degree clockwise rotation (i.e. one flat of the hexagonal adjustment screw) leads to an increase of Ng closing point of approximately 2%. Lock the variable orifice by torquing the small self locking screw to 17 to 20 lb.in. (size 3/32 in.). (9) Remove the thermocouple P/N PWC or P/N PWC from the BOV. F. Write accomplishment of P&WC S.B. No in the applicable engine module log book. 4. Appendix A. Refer to Figure 5 for the PT6A-114A BOV part progression. B. For shop calibration of the new BOV P/N , the closing point should be adjusted to obtain the Px as follows (Ref. Fig. 6): (1) With a supply pressure of 70 Psia (P3) set adjustment to obtain a Px = 30.5 to 31.2 Psia. NOTE: The closing point is adjusted by rotation of the adjustment screw. A 60 degree clockwise rotation (i.e. one flat of the hexagonal adjustment screw) leads to an approximate decrease Px/P3 = Lock the variable orifice by torquing the small bolt to 17 to 20 lb.in.. Feb 18/2000 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 2: Oct 24/2013 Page 5 of 12

104 P&WC S.B. No. 1588R2 PRATT & WHITNEY CANADA COMPRESSOR BLEED OFF VALVE - REPLACEMENT OF C67577A Tool P/N PWC or P/N PWC Figure 1 Feb 18/2000 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 2: Oct 24/2013 Page 6 of 12

105 PRATT & WHITNEY CANADA COMPRESSOR BLEED OFF VALVE - REPLACEMENT OF P&WC S.B. No. 1588R2 Thermocouple and BOV - Installation Of Figure 2 (Sheet 1 of 2) C67573B Feb 18/2000 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 2: Oct 24/2013 Page 7 of 12

106 P&WC S.B. No. 1588R2 PRATT & WHITNEY CANADA COMPRESSOR BLEED OFF VALVE - REPLACEMENT OF FWD C67574 Thermocouple and BOV - Installation Of Figure 2 (Sheet 2) Feb 18/2000 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 2: Oct 24/2013 Page 8 of 12

107 PRATT & WHITNEY CANADA COMPRESSOR BLEED OFF VALVE - REPLACEMENT OF P&WC S.B. No. 1588R Ng (%) WHEN ADJUSTING BOV, SET WITHIN THIS BAND OUTSIDE AIR TEMPERATURE (DEG. F) Compressor Bleed Valve Closing Point Figure 3 C69738 Feb 18/2000 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 2: Oct 24/2013 Page 9 of 12

108 P&WC S.B. No. 1588R2 PRATT & WHITNEY CANADA COMPRESSOR BLEED OFF VALVE - REPLACEMENT OF LOCKING SCREW BOV ADJUSTMENT SCREW C69736 BOV Adjustment Figure 4 Feb 18/2000 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 2: Oct 24/2013 Page 10 of 12

109 PRATT & WHITNEY CANADA COMPRESSOR BLEED OFF VALVE - REPLACEMENT OF P&WC S.B. No. 1588R SB1453 Conversion A114 to A114A CC 8 PRC SB1510 New Metering Plug CC 5 PRC ( ) SB1579 New Grimes BOV CSU PRC ( ) SB1581 New Grimes BOV CC 6 PRC ( ) SB1588 Improved Orifice Pack CC 7 PRC 02 C71587 PT6A-114A Part Progression Figure 5 Feb 18/2000 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 2: Oct 24/2013 Page 11 of 12

110 P&WC S.B. No. 1588R2 PRATT & WHITNEY CANADA COMPRESSOR BLEED OFF VALVE - REPLACEMENT OF FIXED SECONDARY VENTURI A 10 DIFFUSER Px DIAGNOSTIC PORT 0 50 PSIA ADJUSTABLE PRIMARY ORIFICE A 20 P3 INLET PORT 0 75 PSIA SHUT OFF VALVE REGULATOR FILTER SHOP AIR C69694 Compressor Bleed Valve Test Rig - Schematic Figure 6 Feb 18/2000 The export control classification with respect to this document is contained on the back of the locator. PT6A Revision No. 2: Oct 24/2013 Page 12 of 12

111 BULLETIN INDEX LOCATOR ACCESSORY GEARBOX (AGB) HOUSING ASSEMBLY - REPLACEMENT OF Compliance: CATEGORY 10 PRATT & WHITNEY CANADA MODEL APPLICATION PT6A-140 P&WC S.B. No Summary: As an interim configuration, replace the Accessory Gearbox (AGB) housing assembly with one that has a different protective treatment from another supplier and that incorporates a new chamfer on the AGB bracket mounting boss. Dec 12/2013 PT6A Cover Sheet 24-Hour Global Service USA & CANADA Other CFIRST CENTRE International... (IAC*) Fax Toll free where available (SIL GEN-027) * International Access Code Web Site...

112 WARNING - PROPRIETARY RIGHTS & EXPORT CONTROLS NOTICE This bulletin contains proprietary information of Pratt & Whitney Canada Corp. ( P&WC ), which P&WC provides in confidence and solely for the purposes of supporting engine certification and providing applicable information regarding the proper use, maintenance, inspection, repair, servicing and parts application of P&WC products and services, as directed therein. Neither this bulletin nor any information in it may be disclosed to others, or used for any other purpose, including, without limitation, to design, create, develop, reproduce, manufacture or derive any design, part, product, material, process, modification, configuration change or repair, or obtain FAA or other government approval to do so. Possession and use of this bulletin is also subject to the restrictions set out in P&WC s Technical Data Agreement (a copy of which may be obtained by contacting P&WC Technical Publications). The contents of this bulletin may be subject to export control laws. Unauthorized export or re-export of the bulletin, or parts thereof, is prohibited. By accepting and possessing this bulletin, you agree to be bound by the foregoing terms. If a Government agency or department intends to disclose any information, written notice should be given to: VP - Legal Services, Pratt & Whitney Canada Corp., 1000 Marie-Victorin (01BE5), Longueuil, Quebec J4G 1A1. Export Control Classification *Data is subject to the jurisdiction of the Export and Import Controls Bureau of the Department of Foreign Affairs and International Trade of Canada, Department of Commerce of the United States and/or Department of State of the United States. ** Data is not subject to the jurisdiction of the Department of Commerce of the United States or Department of State of the United States but would become subject if exposed to any US involvement. Regulation Canadian ECL(s)* ECCN(s)* P-ECCN(s)** USML (ITAR)* P-USML** Classification Number 9E991

113 PRATT & WHITNEY CANADA P&WC S.B. No ACCESSORY GEARBOX (AGB) HOUSING ASSEMBLY - REPLACEMENT OF 1. Planning Information A. Effectivity PT6A-140 Engines which are between and include Serial No. PCE-VA0090 to PCE-VA0093. B. Concurrent Requirements None. C. Reason (1) Problem It can be difficult to procure the accessory gearbox housing assembly and to install the nut and spacer on the stud at the Accessory Gearbox (AGB) housing flange. (2) Cause Longer lead time at the supplier s facility and excess material at the AGB bracket mounting boss adjacent to the flange. (3) Solution D. Description Replace the accessory gearbox housing assembly with one that has a different protective treatment from another supplier and that incorporates a new chamfer on the mounting boss. Replace the accessory gearbox housing assembly with the new one. E. Compliance CATEGORY 10 - This Service Bulletin is provided for information only. F. Approval D.O.T./D.A.A. approved. G. Manpower No more man-hours are necessary to include this service bulletin at overhaul. H. Weight and Balance None. P&WC No. E7466A Dec 12/2013 The export control classification with respect to this document is contained on the back of the locator Pratt & Whitney Canada Corp. PRINTED IN CANADA PT6A Page1of3

114 P&WC S.B. No PRATT & WHITNEY CANADA ACCESSORY GEARBOX (AGB) HOUSING ASSEMBLY - REPLACEMENT OF 1. Planning Information (Cont d) I. Electrical Load Data Not changed. J. Software Accomplishment Summary Not applicable. K. References Overhaul Manual P/N (PT6A-140) Illustrated Parts Catalog P/N (PT6A-140) L. Publications Affected Overhaul Manual P/N (PT6A-140) Illustrated Parts Catalog P/N (PT6A-140) M. Interchangeability and Intermixability of Parts Interchangeability - Refer to Para. 2.C. Intermixability - Not changed. 2. Material Information A. Industry Support Information Not applicable. B. Material - Cost and Availability Not applicable. C. Material Necessary for Each Engine The quantity of materials listed in this section is on a per Engine basis. Est. Unit List Price New P/N Keyword Old P/N Qty ($US, 2013) Instructions Disposition For information only: Housing Assy, Accessory Gearbox (A)(C) Dec 12/2013 The export control classification with respect to this document is contained on the back of the locator. PT6A Page2of3

115 PRATT & WHITNEY CANADA P&WC S.B. No ACCESSORY GEARBOX (AGB) HOUSING ASSEMBLY - REPLACEMENT OF Est. Unit List Price New P/N Keyword Old P/N Qty ($US, 2013) Instructions Disposition Ê Housing, Accessory Gearbox (B)(C) (A) TWO WAY INTERCHANGEABLE - (ATA 200 Explanation Code 02): The old or the new part can replace the old or the new part. (B) NOT INTERCHANGEABLE - (ATA 200 Explanation Code 03): The old part must replace the old part; the new part must replace new part. (C) Discard the part if it is unserviceable. Return a serviceable part to stock. D. Reidentified Parts None. E. Tooling - Price and Availability Not applicable. 3. Accomplishment Instructions NOTE: The accomplishment instructions that follows are for information only. A. Remove the parts listed under Old P/N in Para. 2.C., Material Information, in accordance with the overhaul manual instructions as follows: v Ref. OHM ENGINE - DISASSEMBLY-3: MODULES AND MAJOR SUB-ASSEMBLIES. B. Install the parts listed under New P/N in Para. 2.C., Material Information, in accordance with the overhaul manual instructions as follows: v Ref. OHM FINAL ASSEMBLY - 1: ENGINE ASSEMBLY. C. Write accomplishment of P&WC S.B. No in the applicable engine module log book. 4. Appendix Not applicable. Dec 12/2013 The export control classification with respect to this document is contained on the back of the locator. PT6A Page3of3

116

117 Compliance: CATEGORY 3 PRATT & WHITNEY CANADA BULLETIN INDEX LOCATOR TORQUE LIMITER - INSPECTION OF MODEL APPLICATION PT6A-140 P&WC S.B. No Summary: This service bulletin documents an inspection to be performed on the Torque Limiter that are approaching 1,000 hours service time. Dec 10/2013 PT6A Cover Sheet 24-Hour Global Service USA & CANADA Other CFIRST CENTRE International... (IAC*) Fax Toll free where available (SIL GEN-027) * International Access Code Web Site...

118 WARNING - PROPRIETARY RIGHTS & EXPORT CONTROLS NOTICE This bulletin contains proprietary information of Pratt & Whitney Canada Corp. ( P&WC ), which P&WC provides in confidence and solely for the purposes of supporting engine certification and providing applicable information regarding the proper use, maintenance, inspection, repair, servicing and parts application of P&WC products and services, as directed therein. Neither this bulletin nor any information in it may be disclosed to others, or used for any other purpose, including, without limitation, to design, create, develop, reproduce, manufacture or derive any design, part, product, material, process, modification, configuration change or repair, or obtain FAA or other government approval to do so. Possession and use of this bulletin is also subject to the restrictions set out in P&WC s Technical Data Agreement (a copy of which may be obtained by contacting P&WC Technical Publications). The contents of this bulletin may be subject to export control laws. Unauthorized export or re-export of the bulletin, or parts thereof, is prohibited. By accepting and possessing this bulletin, you agree to be bound by the foregoing terms. If a Government agency or department intends to disclose any information, written notice should be given to: VP - Legal Services, Pratt & Whitney Canada Corp., 1000 Marie-Victorin (01BE5), Longueuil, Quebec J4G 1A1. Export Control Classification *Data is subject to the jurisdiction of the Export and Import Controls Bureau of the Department of Foreign Affairs and International Trade of Canada, Department of Commerce of the United States and/or Department of State of the United States. ** Data is not subject to the jurisdiction of the Department of Commerce of the United States or Department of State of the United States but would become subject if exposed to any US involvement. Regulation Canadian ECL(s)* ECCN(s)* P-ECCN(s)** USML (ITAR)* P-USML** Classification Number 9E991

119 PRATT & WHITNEY CANADA TORQUE LIMITER - INSPECTION OF P&WC S.B. No Planning Information A. Effectivity PT6A-140 with Torque limiter P/N (P&WC P/N ) installed having Serial Number C79693 and prior. B. Concurrent Requirements None. C. Reason (1) Problem An oil leak occurred on the torque limiter after 544 hours of service (2) Cause The torque limiter leakage was attributable to the pivot and spring assembly that became loose due to a low torque condition of the retaining screws. (3) Solution D. Description Perform a one time in-situ inspection of the torque limiters that are approaching 1000 hours of service time. Perform a one time in-situ inspection of the torque limiter E. Compliance CATEGORY 3 - P&WC recommends that this SB be performed at next scheduled maintenance not to exceed 150 hrs or within 12 months, whichever comes first, for torque limiters that have accumulated less than 800 hours at time of issue of this SB. F. Approval D.A.A. approved G. Manpower Once you have access to the part, an estimate of 0.5 man-hours is required to include this service bulletin at maintenance. No more man-hours are necessary to include this service bulletin at overhaul. P&WC No. DCR25375 Dec 10/2013 The export control classification with respect to this document is contained on the back of the locator Pratt & Whitney Canada Corp. PRINTED IN CANADA PT6A Page1of4

120 P&WC S.B. No PRATT & WHITNEY CANADA TORQUE LIMITER - INSPECTION OF 1. Planning Information (Cont d) H. Weight and Balance None. I. Electrical Load Data Not changed. J. Software Accomplishment Summary Not applicable. K. References Maintenance Manual P/N (PT6A-140) L. Publications Affected None. M. Interchangeability and Intermixability of Parts Not applicable. 2. Material Information A. Industry Support Information Not applicable. B. Material - Cost and Availability Not applicable. C. Material Necessary for Each Engine Not applicable. D. Reidentified Parts None. E. Tooling - Price and Availability Not applicable. Dec 10/2013 The export control classification with respect to this document is contained on the back of the locator. PT6A Page2of4

121 PRATT & WHITNEY CANADA TORQUE LIMITER - INSPECTION OF P&WC S.B. No Accomplishment Instructions A. Gain access to the torque limiter and do a general visual inspection of torque limiter installation and hardware. B. Do a detailed inspection on the torque limiter pivot spring installation (Ref. Fig. 1), by applying finger pressure to pivot spring assembly and attempt to rotate spring pivot head clockwise and counterclockwise, and note for signs of movement. (1) If no evidence of movement is found, no further action is required. (2) If evidence of movement is detected, replace torque limiter per EMM chapter , contact local P&WC FSR and send suspect unit to an authorized facility for repair. C. Write accomplishment of P&WC S.B. No in the applicable engine module log book. 4. Appendix Not applicable. Dec 10/2013 The export control classification with respect to this document is contained on the back of the locator. PT6A Page3of4

122 P&WC S.B. No PRATT & WHITNEY CANADA TORQUE LIMITER - INSPECTION OF PIVOT SPRING ASSEMBLY TRY TO ROTATE SPRING PIVOT HEAD IN A CLOCKWISE AND COUNTER CLOCKWISE DIRECTION AND LOOK FOR ANY SIGNS OF MOVEMENT C Torque Limiter Inspection Figure 1 Dec 10/2013 The export control classification with respect to this document is contained on the back of the locator. PT6A Page4of4