MANPOWER REQUIREMENTS

Transcription

1 CIRRUS SF5X Service Bulletin Number: Issued: Revised: 09 Aug 208 SNS SUBJECT: 25-0 CABIN - Armrest Installation. COMPLIANCE Optional: Accomplishment of this Service Bulletin is at the owner s option. This bulletin was revised to add Material Information and correct Instructions. Operators who have successfully complied with the original release of this service bulletin, dated 09 Aug 208, need take no further action. 2. EFFECTIVITY 3. APPROVAL FAA approval has been obtained on all technical data in this Service Bulletin that affects type design. Aircraft not operating under FAA requirements and regulatory oversight: It is the operator's responsibility to ensure that installation of this Service Bulletin has been accepted by the local airworthiness authority. 4. PURPOSE Modify the crew and passenger seats to include armrests. To perform this task, this Service Bulletin provides for the installation of armrests. 5. DESCRIPTION This Service Bulletin contains instructions for the installation of armrests. 6. WARRANTY INFORMATION Part and labor cost for this Service Bulletin are at the owner s expense. 7. MANPOWER REQUIREMENTS 46.0 man-hours 8. OTHER PUBLICATIONS AFFECTED SF50 Airplane Maintenance Manual (p/n ) Page

2 9. WEIGHT AND BALANCE *Moment arm length for passenger seat center of gravity calculations can vary based on location. Component Weight Arm Pilot Armrest.3 lbs 38 inches Copilot Armrest.3 lbs 38 inches LH Passenger Armrest.3 lbs * RH Passenger Armrest.3 lbs * Middle Passenger Armrests 2.4 lbs * 0. MATERIAL INFORMATION The following parts are required to comply with this Service Bulletin. Parts can be obtained from an Authorized Cirrus Service Center or Parts Distributor. Quantities listed for all five seats. When ordering, reference color code chart (See Figure 02) to ensure correct leather wrap is obtained. Reference kit 7062 or order the following parts. Item No. Description P/N or Spec. Supplier Quantity Double Armrest Weld Assembly Cirrus 2 RH Single Armrest Weld Assembly Cirrus 2 3 LH Single Armrest Weld Assembly Cirrus 2 4 Bushing Cirrus 5 5 Bolt NAS6704U3 Cirrus 0 6 Washer NAS49F046P Cirrus 6 7 Washer NAS49C0432R Cirrus 0 8 Nut NAS29C4M Cirrus 0 9 Armrest Motion Stop Cirrus 6 0 Armrest Pivot Fitting Cirrus 6 LH Strut Cirrus 3 2 RH Strut Cirrus 3 3 LH Leather Wrapped Armrest (See Figure 02) Cirrus 3 4 RH Leather Wrapped Armrest (See Figure 02) Cirrus 3 5 Armrest Guide Cirrus 6 6 Washer Cirrus 6 Page 2

3 Item No. Description P/N or Spec. Supplier Quantity 7 Magnet Cirrus 6 8 Bushing NAS73-4E003 Cirrus 6 9 O-Ring Cirrus 6 20 Bolt NAS6604- Cirrus 6 2 Screw MS Cirrus 2 22 Screw MS Cirrus 6 23 Screw NAS35-08LB2 Cirrus 2 24 Screw Cirrus 2 25 Nut MS2044N08 Cirrus 2 26 Nut MS2044N3 Cirrus 6 27 Washer NAS49FN86P Cirrus Washer NAS49F0332P Cirrus 6 29 Washer NAS49F0363P Cirrus 6 30 LH Closeout Cirrus 3 3 RH Closeout Cirrus 3 32 Screw Cirrus 6 33 Placard Cirrus 3. ACCOMPLISHMENT INSTRUCTIONS A. Acquire necessary tools, equipment, and supplies. Description P/N or Spec. Supplier Purpose Methacrylate 2-Part Adhesive 460 Devcon Bond bushing to seat back, magnet to strut. Loctite 242 Adhesive 3748 Henkel Corporation Secure hardware. Marking Pen - Any Source Paint screw heads. Armrest Drilling Guide Tool, RH T66848 Cirrus Locate drill hole location on RH armrest. Armrest Drilling Guide Tool, LH T66860 Cirrus Locate drill hole location on LH armrest. T-Pin - Any Source Align armrest drilling guide tool. Drill - Any Source Drill hole in armrest tube. Drill Bit, #3 (0.20 inch) - Any Source Drill hole in armrest tube. Seat Back Trim Tool, RH T66849 Cirrus Locate seat trim lines on RH armrest. Seat Back Trim Tool, LH T66878 Cirrus Locate seat trim lines on LH armrest. Page 3

4 Description P/N or Spec. Supplier Purpose Scissors - Any Source Trim seat back panel. Loctite 40 Instant Adhesive 4004 Henkel Corporation Seal trimmed upholstery. Extrusion Gun Sealant (Refer to AMM 20-0) (Refer to Fay weld assembly. AMM 20-0) B. Remove seats. (Refer to AMM 25-0) C. Remove screws securing lower seat back panel on all seats. D. Partially remove leather seat coverings by turning covers inside out on all seats. E. Drill holes in the armrest weld assembles. (See Figure 0) () Install applicable armrest drilling guide tool (LH - T66860) (RH - T66848) on end of armrest weld assembly to achieve correct drilling angle of 60.4 ±.0. (2) Insert T-pin into guide hole of armrest drilling guide tool. Tool is correctly aligned when T-pin can slide through drilling guide tool and into mounting hole on armrest weld assembly. (3) Using #3 drill bit, drill 0.9 to 0.2 inch (3.023 to mm) hole through near side of armrest weld assembly.06 inches (2.69 cm) from end, as indicated by drilling guide tool. (Refer to AMM 5-20) (4) Remove T-pin and tool from weld assembly. F. Repeat drilling procedure on each seat. G. Install armrests. () Install armrest weld assemblies. (See Figure 0) Install LH single armrest weld assemblies (item 3) on co-pilot side crew seat and RH passenger seat (Seat 3). (a) Install RH single armrest weld assemblies (item 2) on pilot side crew seat and LH passenger seat (Seat 5). Install double armrest weld assembly (item ) for middle passenger seat (Seat 4). Check fit of bushing (item 4) onto weld assembly. Permissible to cut slit into bushing if necessary to fit over weld. (b) (c) Using extrusion gun sealant, fay seal weld assembly (item ), (item 2), (item 3) mounting face to seat. (Refer to AMM 20-0) (See Figure 0) Wet install bolt (item 5), washers (item 6) and (item 7), and nut (item 8) securing weld assembly. (Refer to AMM 20-0) (See Figure 0) If slit was cut in bushing, orient slit approximately perpendicular to seat back. (d) Bond bushing (item 4) to carbon seat back using methacrylate 2-part adhesive. (Refer to AMM 5-30) (2) Install armrest pivot fitting (item 0) onto weld assembly. (See Figure 0) (a) Position o-ring (item 9) in opening on pivot fitting. (b) Position bushing (item 8) in opening on pivot fitting, centered in o-ring (item 9). Page 4

5 Hand tighten only. (c) Use bolt (item 20) and washer (item 6) to install pivot fitting (item 0) on end of weld assembly. (See Figure 0) (d) Secure fasteners with Loctite 242. (Refer to AMM 20-40) (3) Install motion stop (item 9) with screws (item 2), washers (item 27), and nuts (item 25). (See Figure 0) (4) Assemble armrest subassembly. Hand tighten only. (a) Attach RH and LH leather wrapped armrest (item 3) (item 4) to RH and LH armrest strut (item ) (item 2) with two screws (item 24). (See Figure 0) (b) Paint screw heads black with marking pen. (c) Bond magnet (item 7) onto RH and LH armrest strut (item ) (item 2). Prep surface of armrest strut (item ) (item 2). (Refer to AMM 5-20) 2 Bond magnet (item 7) to armrest strut (item ) (item 2) with methacrylate 2-part adhesive. (Refer to AMM 5-30) (5) Install armrest subassembly onto weld assembly. (a) Attach armrest guide (item 5) to RH and LH armrest strut (item ) (item 2) with screws (item 23) and washers (item 6). (See Figure 0) Permissible to add extra washers (item 29) as necessary to eliminate interference upon assembly. Armrest strut should be free to rotate. Torque requirements of AMM 20-0 do not apply. Screw threads must be fully engaged into armrest strut. (b) Attach armrest subassembly to weld assembly with screw (item 22), washers (item 29) (item 28), and nut (item 26). (See Figure 0) Completed assembly must rotate smoothly along full range of motion. H. Repeat armrest installation for each applicable seat. I. Trim upper seat back panel to provide clearance for armrest weld assembly. (See Figure 0) Opening should be no larger than 3 inches tall and no more than 4 inches from edge of part. (See Figure 0) () Mark area to be trimmed. (a) Place LH seat back trim tool (T66878) on LH side of seat back. (b) Slide tool into pocket on seat back and push upward. (c) Mark seat back along inner edge for trimming. (d) Remove and store tool. (2) Repeat marking procedure on RH side of seat back using RH seat back trim tool (T66849). (3) Use scissors to trim marked areas. J. Trim seat covering for armrest weld assembly. () Mark area to be trimmed. Page 5

6 (a) (b) (c) (d) (e) Position seat back into typically installed position. Position seat covering and trim flange near armrest to allow leather to lie flat against seat back. Position applicable closeout (item 30) (item 3) to confirm trimmed areas will be fully covered. (See Figure 0) Mark area to be trimmed. Repeat marking procedure on each seat. CAUTION: Ensure trimmed areas will be covered by armrest closeouts. (2) Use scissors to trim marked areas of seat covering. (3) Seal trimmed edges of seat covering with Loctite 40. (Refer to AMM 5-30) K. Install LH closeouts to each applicable seat (item 3). (See Figure 0) () Install seat back panel and secure with screws. (2) Apply Loctite 242 to screw threads (item 32). (Refer to AMM 20-40). (3) Attach LH closeout (item 3) to LH side of armrest tube with screw (item 32). L. Install RH closeouts to each applicable seat (item 30). (See Figure 0) () Install seat back panel and secure with screws. (2) Apply Loctite 242 to screw threads (item 32). (Refer to AMM 20-40) (3) Attach RH closeout (item 30) to RH side of armrest tube with screw (item 32). M. Weigh passenger seats. N. Write seat weight on new placards (item 33) and replace placards on passenger seats. O. Install seats. (Refer to AMM 25-20) Only crew seat armrests affect basic empty weight of aircraft. Optional passenger seats affect loading data. (Refer to AFM Section 6: Weight and Balance) P. Using recorded aircraft weight, calculate and record new weight and center of gravity values on the Weight & Balance Record of the AFM. Q. Complete airplane records by noting compliance with in Aircraft Logbook. To submit a Technical Publication change request, visit: or contact us by at techpubs@cirrusaircraft.com. Page 6

7 A SEAT, PASSENGER (REF) DETAIL A A A2 A3 A4 LEGEND. Double Armrest Weld Assembly 2. RH Single Armrest Weld Assembly 3. LH Single Armrest Weld Assembly 4. Bushing 5. Bolt 6. Washer 7. Washer 8. Nut NOTE Double Armrest Weld Assembly shown. Install Single Armrest Weld Assemblies (not shown), as required. SF5_SB25_0070A Figure 0 Armrest Installation - Weld Assembly ( of 4) Page 7

8 A A A3 B NOTE LH shown, RH oposite(not shown). A4 LEGEND. Double Armrest Weld Assembly 6. Washer 9. Armrest Stop Motion 0. Armrest Pivot Fitting. LH Strut 2. RH Strut 3. LH Leather Wrapped Armrest 4. RH Leather Wrapped Armrest 5. Armrest Guide 6. Washer 7. Magnet 8. Bushing 9. O-Ring 20. Bolt 2. Screw 22. Screw 23. Screw 24. Screw 25. Nut 26. Nut 27. Washer 28. Washer 29. Washer 30. LH Closeout 3. RH Closeout 32. Screw SF5_SB25_007A Figure 0 Armrest Installation - Components (2 of 4) Page 8

9 3.0 inches (7.62 cm) DETAIL B 4.0 inches (0.6 cm) UPPER SEAT BACK PANEL TRIMMING DETAIL UPPER SEAT, BACK PANEL UPPER SEAT, BACK PANEL RH TOOL, T66849 AREA TO BE CUT RH TOOL, T66849 B B2 SF5_SB25_0072 Figure 0 Armrest Installation - Seat Back Panels (3 of 4) Page 9

10 THRU NEAR SIDE ONLY Ø 0.2 inch (3.07 mm) Ø 0.9 inch (3.02 mm) MOUNTING HOLES C.06 inches (2.69 cm) C C DETAIL C 60.4 ±.0 T-PIN MOUNTING HOLE AXIS VIEW C C2 WELD ASSY, ARMREST TOOL, T66848 T-PIN T-PIN WELD ASSY, ARMREST WELD ASSY, ARMREST C3 TOOL, T66848 C4 TOOL, T66848 SF5_SB25_0079 Figure 0 Armrest Installation - Tube Drill Holes (4 of 4) Page 0

11 SF50 Serial Number Leather Color Description Leather Color Code LH Leather Wrapped Armrest RH Leather Wrapped Armrest 0005 Havana Brown Lunar Grey Obsidian Champagne Champagne Lunar Grey Champagne Superior Blue Havana Brown Obsidian Champagne Lunar Grey Obsidian Lunar Grey Premium Osprey Superior Blue Lunar Grey Premium Osprey Champagne Custom Xi CUST CUST CUST 0025 Champagne Obsidian Lunar Grey Champagne Lunar Grey Lunar Grey Obsidian Champagne Figure 02 Color Code Chart Page

12 SF50 Serial Number Leather Color Description Leather Color Code LH Leather Wrapped Armrest RH Leather Wrapped Armrest 0033 Lunar Grey Obsidian Lunar Grey Lunar Grey Obsidian Havana Brown Obsidian Obsidian Lunar Grey Champagne Obsidian Figure 02 Color Code Chart (Continued) Page 2