CFM Fleet Highlites. Statistics Operation Line Shop General Documents. A publication covering CFM56 fleet activity / February 2016

Transcription

1 CFM Fleet Highlites A publication covering CFM56 fleet activity / February 2016 Statistics Operation Line Shop General Documents Commercial Product Support Department CFM International, Inc. Cincinnati, Ohio U.S.A. CFM International Direction de L apres-vente Civile Etablissement de Melun-Montereau Boite Postale Melun Cedex France CFM, CFM56, LEAP and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma (Safran group) and GE. The information in this document is CFM Proprietary Information and is disclosed in confidence. It is the property of CFM International and its parent companies, and shall not be used, disclosed to others or reproduced without the express written consent of CFM. If consent is given for reproduction in whole or in part, this notice shall appear in any such reproduction in whole or in part. The information contained in this document may also be controlled by the U.S. and French export control laws. Unauthorized export or re-export is prohibited.

2 Statistics CFM56 program status Data through January 2016 Engine model Aircraft* Engines* Operators** Cumulative hours Cumulative cycles CFM56-2A (E3/KE3/E6) ,506, ,705 CFM56-2B (KC/RC135) 470 1, ,853,954 6,187,634 CFM56-2C (DC8-70) ,427,973 6,942,478 CFM56-3 (B /400/500) 1,989 4, ,275, ,521,752 CFM56-5A (A319/320) 535 1, ,030,074 31,936,042 CFM56-5B (A318/319/320/321) 3,360 7, ,961,458 84,823,987 CFM56-5C (A340) 247 1, ,807,314 10,087,449 CFM56-7B (B737NG) 5,749 12, ,826, ,119,952 Total 12,501 28, ** 789,689, ,592,999 * Aircraft registered and engines delivered to customers ** Customers operating CFM56 engines CFM56 reliability rates Rates/number of events 12-month rolling average Data through January 2016 Unplanned removal** Shop visit ** IFSD** ATO*** Aircraft dep rel %**** Total* rate count Engine rate count Total* rate count Engine rate count Total* rate count Engine rate count Total* rate count Engine rate count Total* rate count Engine rate count CFM56-2C (DC8-70) CFM56-3 (B / 400/500) CFM56-5A (A319/320) CFM56-5B (A318/319/ 320/321) CFM56-5C (A340) CFM56-7B (B737NG) * Total includes engine causes and other related engine events such as FOD, customer convenience, etc. ** Per 1000 EFH *** Per 1000 departures **** Populated using sampling method (customers, qty D&C's and departures) CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February

3 Operation Operational events ATOs/IFSDs, January 2016 Date Aircraft Position Type Event Cause Event details January CFM56-7B ATO Non-engine Slow acceleration (Inspections OK acceleration check within limits released aircraft) January CFM56-7BE ATO Non-engine Birdstrike (Two fan blades/platforms damaged replaced two fan blade pairs / platforms released aircraft) January CFM56-7B ATO Engine Slow/hung acceleration (Replaced EEC cleaned sense line released aircraft) January 5 A CFM56-5A-1 ATO Engine Low oil pressure indication (Oil pressure / quantity OK replaced oil pressure switch released aircraft) January CFM56-7B/3 ATO Engine Slow acceleration / asymmetric thrust (MFP impeller rotation check failed replaced MFP replaced HMU as precaution released aircraft) January ER 2 CFM56-7B/3 IFSD Engine Low oil quantity / pressure (Oil quantity zero oil filter changed previous night wet motor showed leak at oil filter seal not replaced corrected released aircraft) January 9 A CFM56-5B/3 IFSD Non-engine Engine fire fault (HPC stage 9 duct cracked several harnesses / heat shields with heat damage replaced damaged tubing/hardware released aircraft) January 10 A CFM56-5B/P ATO Engine PFR message / VBV HMU message (VBV system inspections / actuation checks OK replaced VBV gear motor / VBV sensor released aircraft) January CFM56-7B/3 IFSD Non-engine Fuel quantity loss (Root cause identified as crossfeed valve actuator corrected released aircraft) January CFM56-3-B1 IFSD Non-engine Low oil pressure (Replaced oil pressure indicator released aircraft) January 21 A CFM56-5B/3 IFSD Non-engine Fluctuating oil quantity indication (Dispatched with oil quantity indication inop released aircraft subsequently replaced oil quantity indicator) January 21 A CFM56-5C4 ATO Engine Reverser unlock ECAM (Reverser put on MEL released aircraft) January 22 A CFM56-5A/F ATO Non-engine Birdstrike (P2/T2 probe missing fan blade damage fan case abradable shroud damage replaced engine) January CFM56-7B IFSD Engine Noise (Metal in tailpipe BSI showed unserviceable HPT damage replaced engine confirmed HPT blade under platform separation) January 28 A CFM56-5B/3 IFSD Engine Power loss (Replaced MFP / HMU / fuel filter BSI OK released aircraft) January CFM56-7B ATO Non-engine Birdstrike (Inspections OK released aircraft) January 29 A CFM56-5B/3 IFSD Engine N2 at zero Continued on next page (Low oil quantity oil staining on tank broken VBV flex shafts debris on EMCD metal on front scavenge screen replaced engine) CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February

4 Operation Continued from previous page Date Aircraft Position Type Event Cause Event details January CFM56-3-B1 ATO Engine Noise / yaw / EGT light (Replaced engine) January 31 A CFM56-5C/F IFSD Non-engine Low oil quantity (Replaced oil quantity transmitter released aircraft) January 31 A CFM56-5B/3 IFSD Engine Several ECAM warnings (Fan frame strut damage RDS broken replaced engine) CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February

5 Article Index Overview The following articles are published in this February 2016 issue of CFM56 Fleet Highlites: Page 06 CFM56-7B SB : new fire detection harness ( ) Page 12 CFM56-5B/-7B Harmonization of center vent tube seals ( ) Page 07 CFM56-7B SB : introduction of a new OFDPS ( ) Page 13 CFM56-7B Fan case abradable best practices available ( ) Page 09 CFM56-5B Starter damage due to oil loss from loose drain plug ( ) Page 14 CFM56-5B Fan frame repair after removal for RDS housing leakage ( ) Page 10 CFM56-5B FAA AD: CFM56-5B for TRFs ( ) Page 10 CFM56-7B Fan frame shroud V-groove PTFE on-wing repair ( ) Page 11 CFM56-7B Best practices: fan blade moment weight measurement ( ) Page 15 CFM56-7B TGB line 2 seal: closure of field plan ( ) Page 15 CFM56-All CFM LEAP-1A powers Airbus A321neo first flight ( ) Page 16 CFM56-All CFM orders strong in 2015; LEAP engine surpasses 10,000 orders ( ) Ideas for a Fleet Highlites article? For CFM-Inc customers, CFM56FHArticles@ae.ge.com For CFM-S.A. customers, per.bengtsson@snecma.fr CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February

6 Line CFM56-7B SB : new fire detection harness ( ) This article announces the introduction of a new CFM56-7B fire detection harness by SB The current MW0325 VIN CA ( ) and MW0326 VIN CA ( ) fire detection harnesses (Esterline) have experienced premature removal due to shielding braid wear and terminal lug ceramic breakage. Improvements Improvements have been incorporated into the new fire detection harness design (Figure 2) and documentation to address: SB new fire detection harness Category 7 SB , issued October 20, 2015, announces the production introduction and spare parts availability of the new MW0325 and MW0326 Fire Detection Harnesses with a new Meggitt design: - Old: Esterline (Auxitrol) MW0325 VIN CA ( ) and MW0326 VIN CA ( ) - New: Meggitt MW0325 VIN ( ) and MW0326 VIN ( ) Broken ceramic/lug o Assembly documentation was revised to highlight potential risk of mishandling Worn/missing braid o AMM was revised in October 2015 to extend repair criteria (Aluminum tape and lockwire repair) to No Limit The old harness MW0325/0326 can be replaced by the new harnesses as a set per Boeing SB Mixing the old and new harnesses is not allowed the new harness system must be installed as a complete set. The Esterline (Auxitrol) harnesses will be maintained and available as spare parts for field use only. CFM has worked with Boeing to propose design improvement of harness, addressing all findings: New semi-rigid harness Improved routing and additional brackets, helping eliminate potential lug/ceramic damage No braid Semi-rigid harness No braid Figure 2: New fire detection harness design Figure 1: Location of MW0325 and MW0326 harnesses CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February

7 Line CFM56-7B SB : Introduction of a New OFDPS ( ) Background In 2013, the CFM56-7B experienced an increase in the number of low time Oil Filter Differential Pressure Switch (OFDPS) removals due to switch disagree faults. Faults were observed on those OFDPS before 3,000 EFH, causing Delays & Cancelations and maintenance burden. Investigation Root cause analysis on returned units revealed infant mortality due to two main contributors: 1. Internal contamination on the micro switch contacts 2. Marginal force applied on the micro switch contacts This fault affects only ground operation, as the annunciation of switch disagree faults is inhibited in flight. Contamination and marginal contact pressure Figure 2: X-ray cross-section of micro switch in actuated position Improvements Several improvements were introduced on a step-by-step basis, as soon as available, in order to continuously improve the OFDPS reliability: Figure 1: OFDPS description and operation Step 1: OFDPS containment: Improved ATP (Acceptance Test Protocol) + SB issuance for suspect batch. Step 2: Micro-switch extra wash: Additional cleaning in production to improve removal of internal contaminants. Step 3: OFDPS process: Rejection of OFDPS with lowest force on micro switch contacts + optimization of micro switch orientation Step 4: OFDPS design: Increase magnet force to increase pressure on micro switch contacts + Removal of bi-metal lock blade to create a daily activation of micro switch, keeping the contact surface clean. Figure 3: Step-by-step OFDPS improvements Continued on next page CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February

8 Line Continued from previous page Service Bulletins Cat 7 SB issued on December 2, 2015, introducing the full upgraded OFDPS (4 steps) with the following part number change: Old PN: VIN QA07656ISS1 ( ) New PN: VIN QA07656ISS2 ( ) Cat 5 SB , described in December 2014 CFM56 Fleet Highlites article ( ), addressing a limited production window, will subsequently be cancelled (2016). Recommendations There is no proactive removal recommended per SB CFM recommends installation of this new OFDPS at customer convenience. The CFM56-7B WPG continues to recommend replacing the OFDPS during shop visit for engines with OFDPS greater than 15,000 flight hours (reference December 2010 CFM56 Fleet Highlites article ). Figure 4: Summary of improvements on new OFDPS CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February

9 Line CFM56-5B Starter damage due to oil loss from loose drain plug ( ) This article describes a recent CFM56-5B significant event caused by maintenance error, and reminds operators of appropriate maintenance action to help prevent similar events. CFM recently received a report regarding starter damage at the starter s first shop return. The air starter turbine wheel contacted the inlet duct wall (Figure 1). Maintenance recommendations to drain the starter There are two options for draining the starter for maintenance purposes (AMM XX-X). 1. The first procedure removes the drain plug. Removing the plug presents the opportunity for maintenance error when the plug is reinstalled: the plug or starter housing threads can be damaged, and it is also possible for the plug to be torqued incorrectly. These errors can lead to subsequent oil leakage. 2. The second procedure (RECOMMENDED) allows servicing the starter without removing the drain plug, using an adapter instead (Figure 4). Drain adapter PN 2G7899 allows servicing without removing the drain plug Connection into drain plug eliminates requirement for drain plug removal and torque CFM recommends following the AMM procedure that uses the specified drain tool (Figure 4). Flexible PVC tubing Ferrule Figure 1: Air starter turbine wheel contact location This condition is believed to be caused by a lack of oil resulting from incorrect drain plug sealing. During starter disassembly, the drain seal was found to be loose (Figure 2). The drain plug threads in the housing were damaged as well (Figure 3). Drain adapter Figure 4: Drain adapter PN 2G7899 (Honeywell) Magnetic plug, untorqued Gap visible between drain plug fitting and housing (drain plug can be moved relative to housing) Drain plug threads in aluminum housing found stripped /worn Figure 2: Improperly torqued drain plug causing poor sealing Figure 3: Drain plug damaged threads CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February

10 Line CFM56-5B FAA AD: CFM56-5B for TRFs ( ) Reference: CFM56-5B All Operators Wire (16-CFM Rev.1), February 9, 2016 CFM56 Fleet Highlites article ( ), January 2016 CFM has issued two CFM56-5B Service Bulletins (SBs) that are referenced in a recent FAA Airworthiness Directive (AD). CFM56-5B SB Rev 05 identifies engines as utilized in aircraft corporate applications. CFM56-5B SB specifies inspection procedures for the Turbine Rear Frames, including an inspection threshold and repetitive intervals, which vary dependent on the application of SB The CFM56-5B SBs and are available to CFM56-5B customers on the CFM Customer Web Center, under Publications, Nav & Go. The FAA-AD is available on the FAA website at On January 26, 2016, the FAA issued AD number , with an effective date of March 1, This AD requires compliance with CFM56-5B SB within the stated inspection thresholds or within 150 cycles after the effective date of the AD, whichever occurs later. The SB and AD s actions manage potential low cycle fatigue cracks on Turbine Rear Frames to avoid further engine and aircraft damage. CFM56-7B Fan frame shroud V-groove PTFE on-wing repair ( ) This article announces that CFM56-7B SB was released on December 9, This Service Bulletin provides the repair procedure to restore the fan frame shroud outer V-groove PTFE varnish on-wing (Figures 1 and 2), which protects the V-groove from fretting between the V-blade and the V-groove. The aim is to avoid/limit the wear of the base metal, and to help prevent scrapping fan frame shrouds at shop visit. SB is category 7. The proposed interval for the repair is to restore the varnish at every C-check, but operators may choose to perform the restoration more frequently at their convenience. Figure 1: PTFE varnish appearance Figure 2: Area for applying PTFE varnish CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February

11 Shop CFM56-7B Best practices: fan blade moment weight measurement ( ) The article provides CFM56-7B operators and shops with fan blade moment weight (MW) measurement best practices. Improper methods to calculate moment weights can lead to an incorrect measurements and, as a consequence, difficulties during fan trim balancing. Background Some operators reported to CFM that they experienced high levels of vibration after balancing. Analysis shows that those difficulties in balancing were due to incorrect MW measurement after repair. Investigations at several shops revealed use of improper methods, including variability of the process, environmental disturbances, lack of tooling calibration, etc. The following ESM references require MW measurement (Table 1): Practices recommendations 1) Part condition: - Before performing the measurement, each blade must be cleaned following ESM task Make sure that the blades are clean and have gone through inspection prior to MW measurement. 2) Tooling calibration: - The scale must be calibrated after every ten (10) blades are measured. - The reset must be ensured by using a master blade, being itself calibrated once a year. - The operator must confirm that the fan blade is correctly positioned in the scale fixture. - No backlash/displacement is permitted. Manual Task reference ESM ESM ESM Table 1: Manual references requiring MW measurement Influencing factors Audits were performed at several shops. Three ways to improve the efficiency and consistency of MW measurement were identified: Part condition Tooling Environment Figure 2: Example of gripper system Each these influencing factors need to be mastered to ensure MW measurement reliability and repeatability. 3) The calibration room must be closed. Make sure that no door and no window is open during the measurement process. This can create disturbances during the measurement and significantly influence the result. Recommendations CFM recommends that customers comply with these best practices for fan blade moment weight (MW) measurement in order to help prevent MW result differences/inconsistencies due to variation in shop processes. Such a MW result difference may lead to an incorrect N1 vibration signature after balancing. Figure 1: Fan blade MW measurement process CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February

12 Shop CFM56-5B/-7B Harmonization of center vent tube (CVT) seals ( ) Background The Center Vent Tube (CVT) has three seals installed along its length. CFM has identified a risk of mixing the seals on the forward, middle and rear grooves of the Center Vent Tube. The forward seal is a different material than that of the middle and rear seals. It is difficult to differentiate these CVT seals. The rear and middle seals are designed to resist more heat. If the forward seal, which is made of less heat resistant material (Viton E) is installed on the middle or rear grooves, it may lose its damping properties. Harmonized CVT seals Category 7 Service Bulletins (5B) and (7B) introduce the same seal on the forward CVT groove that is on the middle and rear CVT grooves. All three seals on the CVT will be the same after Service Bulletin compliance. This removes the risk of installing a seal with the wrong material in the heat exposed areas. Old forward CVT seal New forward CVT seal CFM56-5B CFM56-7B Table1: CVT forward seal part numbers Figure 1: Seal locations, CFM56-7B example CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February

13 Shop CFM56-7B Fan case abradable best practices available ( ) Fan Case abradable repair best practices have been developed to help prevent on-wing abradable disbonding (Figure 1). The aim is to provide general recommendations and illustrations for properly cleaning, preparing and applying fan case abradable (Figure 2). The best practices are now available for download from the CWC download center, meeting materials / CFM56-7B section (Figure 3). Figure 1: Example of disbonded fan abradable Figure 2: Excerpt from Fan Case Abradable Best Practices Figure 3: Fan Case Abradable Best Practices available on CWCs Figure 4: Fan Case Abradable Best Practices on CWCi publications download center download meeting materials CFM56-7B WTT fan case abradable best practices CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February

14 Shop CFM56-5B Fan frame repair after removal for RDS housing leakage ( ) This article informs CFM56-5B operators that the current ESM repair method (Figure 1) for fan frame diameter WA was deleted by Incremental Change in February In advance of ESM Revision 67 issuing in March 2016, CFM recommends to not apply this repair method. An investigation of oil leakage events in service determined that the diameter WA repair can cause radial drive shaft (RDS) housing leakage issues. The repair was removed and alternative repair options are being evaluated. Figure 2: Fan frame diameters WA and WB Diameter WB is repairable at piece part level by ESM REPAIR 031. CFM is working to develop a new repair method for diameter WA, and will provide repair status updates at FOCUS team calls. Figure 1: Deleted ESM repair method of Dia. WA Until the repair is available, CFM recommends keeping affected fan frames on hold. Diameter WA can become damaged if RDS inner housing disbonding on the fan frame inner cavity occurs. The RDS inner housing can drop slightly due to gravity and rotates, which can lead to damage to diameters WA and WB by fretting (Figure 2). CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February

15 General CFM56-7B TGB line 2 seal: closure of field plan ( ) Reference: CFM56-7B (16-CFM56-735) All Operators Wire, February 19, 2016 On June 2, 2015, CFM announced by AOW 15-CFM56-723, identification of a limited population of CFM56-7B Transfer Gearboxes (TGB) that may exhibit premature wear on Line 2 gear spline due to seal deterioration. All affected customers were notified at that time. A category 2 Service Bulletin ( ) was issued on June 15 calling for removal of the affected TGBs before December 31, One TGB (SN VX3453) was not proactively reworked by CFM as it was removed from the engine to be sold as a spare unit. Special attention is recommended to all customers on this specific TGB. Per CFM records, all CFM56-7B TGBs are compliant with SB except TGB SN VX3453. CFM can now confirm that the affected hardware has been removed from operation and corrected with minimal impact to revenue service. CFM56-All CFM LEAP-1A powers Airbus A321neo first flight ( ) Reference: CFM press release, February 9, 2016 On February 9, advanced LEAP-1A engines successfully completed a five-hour, 29-minute first flight powering the new Airbus A321neo, paving the way for delivery of the first LEAP engines on the largest member of the A320neo family in The LEAP engine began flight tests on the A320neo variant in May 2015 and has logged more than 1,000 engine hours to date on more than 200 flights to support aircraft certification and first delivery in mid The engine received joint U.S. Federal Aviation Administration and European Aviation Safety Agency certification in November "We could not be happier with the LEAP engine and are proud of the many firsts such as today s flight it has powered throughout the A320neo flight test program, said Jean-Paul Ebanga, president and CEO of CFM International. "We have confirmed that the engine is meeting its performance specifications, and the reliability and durability it has exhibited throughout testing is a glowing testament to the professionalism and expertise of the team that is bringing this product to market. We can t wait to begin introducing it to our customers later this year. On behalf of the entire CFM team, I congratulate Airbus on the continued success of the A320 family flight test program. " For more information, contact: Jamie Jewell jamie.jewell@ge.com Cell: Rick Kennedy Giulia Lecarrié rick.l.kennedy@ge.com giulia.lecarrie@snecma.fr Cell: Cell: CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February

16 General CFM56-All CFM orders strong in 2015; LEAP engine surpasses 10,000 orders ( ) Reference: CFM press release, February 8, proved to be another strong year for CFM orders with the company booking a total of 2,154 engines, including 736 CFM56 engines (commercial, military and spares) and 1,418 LEAP engines (including spares) is already off to a good start, with nearly 600 engine orders received in January. At the same time, the LEAP engine has now surpassed 10,000 total engine orders and commitments (excluding options) at a value of $140 billion U.S. at list price. CFM continues to achieve historic production rates for the CFM56 product line. The company produced 1,638 CFM56 engines in 2015, compared to 1,560 engines in 2014 and 1,502 in CFM maintains the highest production rate in the industry and has consistently built more than 1,000 CFM56 engines per year since "We are honored that airline customers around the world continue to show a preference for CFM engines," said Jean-Paul Ebanga, president and CEO of CFM International. "The CFM56 family is still going strong and we believe LEAP orders raise even higher as our technology choices prove themselves out in the flight test programs at Airbus and Boeing. This year makes the start of the transition to LEAP engine production, with more than 140 units in the plan. The company expects to complete the transition by 2020 with an annual production rate of more than 2,000 engines. CFM will continue to build CFM56 spare engines for many years to support the in-service fleet and plans to produce spare parts for the program until around the year The LEAP engine is delivering double-digit improvements in fuel efficiency, emissions and noise, while the legendary reliability and low cost of ownership of its predecessor, the ubiquitous maintaining CFM56 engine family. The LEAP-1A is an engine as an option on the A320neo family; and the LEAP-1C engine is the sole Western powerplant for the COMAC C919; and the LEAP-1B is the sole powerplant for Boeing s new 737 MAX. For more information, visit us at or follow us on or contact: Jamie Jewell jamie.jewell@ge.com Cell: Rick Kennedy rick.l.kennedy@ge.com Cell: Giulia Lecarrié giulia.lecarrie@snecma.fr Cell: Our 2015 orders bring the current backlog to more than 13,400 engines and our biggest challenge now is building them all. To meet that challenge, GE and Snecma have invested nearly $1 billion U.S. to date in new and upgraded facilities that incorporate today s most advanced manufacturing technology. Our goal is to ensure that each new LEAP engine is delivered on time with the same level of quality and reliability our customers have come to expect from a CFM product." CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February

17 Service Bulletins Engine Bulletin Issue date Compliance Title CFM R03 January 25 5 Engine - HPC ( ) - stages 2 and 3 shrouds - leading edge cutback CFM56-5A R04 January 21 7 Engine - combustion chamber ( ) - combustion chamber outer liner rework CFM56-5A R00 January 22 7 Engine - general ( ) - corporate application of the CFM56-5, -5- A1/F, -5A3, -5A4, -5A4/F, -5A5 and -5A5/F CFM56-5A R00 January 22 7 Engine - general ( ) - commercial application of the CFM56-5, -5- A1/F, -5A3, -5A4, -5A4/F, -5A5 and -5A5/F CFM56-5B R00 July 6, Engine - fan and booster assembly ( ) - inner shroud rework and re-identification of vane assembly stage 2 CFM56-5B R01 October 16, Engine - fan and booster ( ) - spare parts release for CFM56-5B IPC CFM56-5B R05 January 21 7 Engine - combustion chamber ( ) - combustion chamber outer liner rework CFM56-5B R00 January 22 8 Engine - transfer gearbox assembly ( ) - spare parts release for CFM56-5B IPC CFM56-5C R01 January 4 3 Air - general ( ) - VBV system preventive maintenance CFM56-5C R01 January 6 7 Engine fuel and control - electronic control unit ( ) - ECU modification - buck power supply U540 modification CFM56-5C R01 January 23 3 Engine - HPT shroud and stage 1 LPT nozzle assembly ( ) - stage 1 LPT nozzle inspection CFM56-7B R00 December 9, Engine - fan frame assembly ( ) - application of PTFE lubricant varnish on V-groove outer ring CFM56-7B R04 January 5 2 Engine - fan and booster assembly ( ) - inspection of the booster spool CFM56-7B R01 January 6 7 Engine fuel and control - electronic control unit ( ) - buck power supply U540 modification CFM56-7B R04 January 13 7 Engine - fan frame assembly ( ) - rework for fan containment case B1 flange at fire detector location CFM56-7B R02 January 13 7 Engine - fan frame assembly ( ) - rework in field of fan containment case B1 flange at holes no. 84 and 85 CFM56-7B R04 January 21 7 Engine - combustion chamber ( ) - outer combustion chamber liner rework CFM56-7B R04 January 21 2 Engine - compressor front stator assembly ( ) - on wing inspection of pre-cfm56-7b S/B actuation compressor stator inlet guide vane ring assemblies CFM56-7B R02 January 25 7 Engine - compressor front stator assembly ( ) - introduction of new stage 2 and stage 3 shrouds seals inner bushings and stage 3 retention pin CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February

18 Support equipment releases Engine Tool number Title Function Document / Date CFM56-All Old: 856A4325G01 New: None HPC stator case flowpath power grinder All references to HPC stator case power grinder 856A4325G01 have been removed and replaced with grind in accordance with SPM ( power blend). Stop Order 856A4325G01 February 2016 CFM56-5B/3 CFM56-7B/3 (TI) Old: 856A4055G13 New: 856A4055G14 HPC stg 1-9 blade tip grinder (Technical Insertion) Several parts including the grinding wheels will no longer be available for the 856A4055G13. Rework instructions to a G14 are available on the Technical Data Sheet(TDS) TDS 856A4055G14 February 2016 CFM56-5B CFM56-7B (Non-TI) Old: 856A4055G12 New: 856A4055G15 HPC stg 1-9 blade tip grinder (Non-Technical Insertion) Several parts including the grinding wheels will no longer be available for the 856A4055G12. Rework instructions to a G15 are available on the Technical Data Sheet(TDS) TDS 856A4055G15 February 2016 CFM56-5B CFM56-5BP CFM56-5C2 Old: 856A1491G02 New: 856A1491G03 Compressor mid flange bracket set The G03 tool is made to clear a redesigned air tube (right hand side aft looking fwd) on the 5B & 5C engines. The G03 is recommended for all applicable engines for commonality. The G02 will remain as an alternate for the 5A1 & 7B engines. G02 cannot be reworked to G03 configuration due to material changes. TDS 856A1491G03 February 2016 CFM56-5A CFM56-7B Old: 856A1491G02 New: 856A1491G03 Compressor mid flange bracket set The G03 tool is made to clear a redesigned air tube (right hand side aft looking fwd) on the 5B & 5C engines. The G03 is recommended for all applicable engines for commonality. The G02 will remain as an alternate for the 5A1 & 7B engines. G02 cannot be reworked to G03 configuration due to material changes. TDS 856A1491G03 February 2016 All Operators Wires Engine AOW number Issue date Title CFM56-5B 16-CFM February 5 FAA Airworthiness Directive on CFM56-5B for turbine rear frames CFM56-5B 16-CFM56-734Rev1 February 9 FAA Airworthiness Directive on CFM56-5B for turbine rear frames CFM56-7B 16-CFM February 19 CFM56-7B TGB Line 2 seal Closure of field plan by CFM CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February

19 Repair Releases Repair documents (RD) identified with Yes in the Substantiation Required column require source substantiation. Source substantiation by CFM requires that a valid contract covering this repair be in place before the document is released to the requesting shop. Therefore, requests for substantiated repair documents cannot be fulfilled unless a valid contractual agreement exists with CFM. Repair document RD issued Program title Engine(s) ATA Repair/SB Substantiation required? P1 February 4 Compressor front stator assembly - compressor stator variable vanes - repair laser weld repair of the inner trunnion pin notch on the stages 1-3 vanes CFM56-5B CFM56-7B Yes S1 February 4 Combustion assembly - combustion case - repair - replacement of outlet guide vane diffuser CFM56-5B No P1 February 4 Compressor front stator assembly - compressor stator variable vanes - repair laser weld repair of the inner trunnion on the stages 1-3 vanes CFM56-5B CFM56-7B Yes P5 February 5 Fan frame assembly - no. 3 bearing aft stationary seal - alteration Teflon seal and oil drain tube cover replacement CFM56-5A CFM56-5B CFM56-5C CFM56-7B SB SB SB SB Yes P4 February 5 Fan frame assembly - no. 3 bearing aft stationary seal - repair - Teflon seal repair P4 February 5 fan frame assembly - no. 3 bearing aft stationary seal - repair - oil drain tube cover repair P2 February 8 High pressure turbine shroud and stage 1 low pressure turbine nozzle assembly HPT shroud support hanger - repair - locating slot weld repair P4 February 10 High pressure turbine shroud and stage 1 low pressure turbine nozzle assembly - H shroud support hanger - repair - forward lip weld repair P3 February 12 High pressure turbine rotor assembly - high pressure turbine rotor blade retainer - repair - repair of dimension d and dimension C CFM56-5A CFM56-5B CFM56-5C CFM56-7B CFM56-5A CFM56-5B CFM56-5C CFM56-7B CFM56-5B CFM56-5C CFM56-7B CFM56-5B CFM56-5C CFM56-7B CFM56-5B CFM56-5C CFM56-7B Yes Yes Yes Yes Yes To obtain the latest revision of the CFM56 High Pressure Repair Document, please contact your CFM56 Field Service Representative, or contact: USA: Phone GEAE-CSC Fax GEAE-FAX aviation.fleetsupport@ge.com To obtain the latest revision of the CFM56 Low Pressure Repair Document, please contact your CFM56 Field Service Representative, or contact: International: Phone 33 (1) Fax 33 (1) snecma.csc@snecma.fr International: Phone Fax aviation.fleetsupport@ge.com CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February

20 EASA and FAA Airworthiness Directives (ADs) log Note 1: The list provided below is a general summary meant for general reference only operators should refer to the FAA and EASA websites for the listing of ADs applicable to CFM56 engines. Note 2: This list will be presented and updated in each edition of CFM56 Fleet Highlites. Engine model EASA * FAA B 5C 7B Component * Number Issue Date Number Effective date FAA amendment X Fuel injector w/o heat shield (B) 30-Jan Feb X Oil distributor (B) R1 09-Jul R1 07-Jul X X X #3 bearing (B) R3 17-Jan R1 28-Jan X Fan blade dampers (B) 06-Feb Oct X Fan blade dampers (B) R1 31-Oct Jan X Fan blade dampers (B) R2 06-Feb Jan X Inclement weather (B) 06-Feb Feb X Air starter (B) 27-Apr Jun X Fan disk (LDM) life reduction (B) 31-Aug Jun X X X HPC 1-2 spool (B) R3 27-Sept Jun X X X Stub shaft, conical support (B) R1 26-Feb Dec X LPT/HPT life reduction (B) R3 21-Sep R3 14-Oct X Fan disk inspection F (B) R4 30-Mar Apr X X HPT disk rim bolt hole (B) 05-Nov Jul X X X X AGB/TGB cancellation (B) R4 25-Feb X LPT case life reduction (B) R2 15-Jul Mar X LPT case life reduction (B) R3 12-Dec-01 X X Air/Oil seal, #3 bearing (B) R1 17-Jun Mar X AGB/TGB (B) 25-Feb Jun X X X AGB/TGB (B) 25-Feb Jun X HMU (osg) (B) R1 22-Apr Jul X AGB, line # (B) R1 01-Jul Sep X AGB, line # (B) R1 13-Jul Oct X FOS life reduction (B) 12-Aug Apr X HMU (FMV resolver) T (B) 28-Aug-98 T Aug-98 X HMU (FMV resolver) (B) R2 04-Nov Nov X X X Fuel filter cover (B) R2 20-Oct Oct X Fuel filter cover (B) R1 20-Oct Oct X Fuel filter cover (B) R1 20-Oct Oct X Fuel filter cover (B) R1 20-Oct Oct X X X X X X PMA fuel filter replacement Jan X X FAA inspection initiative IMP(B) 30-Jun May X X Forward outer seal (B) 12-Jan May X Forward outer seal (B) 12-Jan May X X X X X X FAA Inspection Initiative IMP(B) R1 12-Jul Dec X PS3 line b-nuts T (B) 30-Jan Feb X CJ9 harness chafing T (B) 10-Apr Apr-01 X X X Starter oil mag plug (B) 16-May Mar X CJ9 & CJ10 harness chafing (B) 16-May May Comments Superseded by CN Replaced by (B) T superseded by AD CN replaced by IMP(B) AD superseded by CN replaced by IMP(B) AD superseded by Superseded by (B) & Continued on next page CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February

21 EASA and FAA Airworthiness Directives (ADs) log (continued) Engine Model EASA * FAA B 5C 7B Component * Number Issue date Number X X X X X X No.4 bearing quality escape (B) CFM56 engine models were formerly certified by FAA and DGAC; DGAC s responsibility has been transferred to EASA. Effective date FAA amendment X X X X X X No.4 bearing quality escape (B) 13-Jun Jun X X X X X X X X X X X LPT conical support life limit reduction -5C4 & -5C4/1 FAA Inspection Initiative rotating parts LPT nozzle sectors stg 2 & 3 rework EGT harnesses; temp shift indication F (B) R1 28-Feb Dec IMP(B) 24-Jul Aug (B) 18-Sep Sep F (B) R2 ( ) 08-Jun-05 (31-May-05) Mar X X X Air starter retention ring F (B) R2 29-Sep Jun X X X Fuel pump; bronze bearings F (B) 23-Jun Jun X X X X TRF life limit reduction and periodic inspection TRF life limit reduction and periodic inspection HPC inspection / replacement for deterioration / stalls Apr Mar Aug Oct E 23-Dec Dec X HPC open beta stall E 26-Dec X X X 5.B.R software as closing action for deterioration stalls Corrected: time limits LPT rear frame life limit / mandatory inspection Engine fan blades with 25 deg mid-span shrouds inspection Time limits low pressure turbine rear frame life limit / mandatory inspection R1 28-Apr Jun Jan Feb Feb Jul May Oct X X X X X X HPC 4-9 spool US May Jun X Engine fuel and control HMU inspection / replacement E 15-Jul-09 X X X LPT stage 3 disk Dec Jul X Fan blade replacement (mid span shroud radius) Oct Mar-12 X X HMU mx, CIS TS1 fuels Jul Sep X X AGB hand cranking pad mod Oct Feb-14 X Non TCH HPT disk Jan X Non TCH holder LPT stage 1 vane repair X X Life limits/inspections - stationary parts operated on another engine model X EEC: removing 7BV4 and earlier for thrust instability Aug May Dec Mar-15 X X AGB gearshaft line 6, line Jul Oct X TRF mount inspection Mar-16 Comments Superseded by (B) EASA AD for -5B/-5C only AD superseded by AD Supersedes CN (B) R1 AD superseded by AD Superseded by E Superseded by AD Supersedes AD E & AD Superseded by CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February

22 Scorecards CFM56-5A CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February

23 Scorecards CFM56-5A, continued CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February

24 Scorecards CFM56-5A, continued CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February

25 Scorecards CFM56-5B CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February

26 Scorecards CFM56-5B, continued CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February

27 Scorecards CFM56-5B, continued CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February

28 Scorecards CFM56-5C CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February

29 Scorecards CFM56-5C, continued CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February

30 Scorecards CFM56-7B CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February

31 Scorecards CFM56-7B, continued CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February

32 Scorecards CFM56-7B, continued CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February

33 Scorecards CFM56-3 CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February

34 Scorecards CFM56-3, continued CFM Proprietary Information subject to restrictions on the cover CFM56 Fleet Highlites February