# CFM International CFM56-7B27/B1 series - Type: Engine model (FAA registry) - Registry code: 13053 - Manufacturer (registry): CFM INTL - Model: CFM56-7B27/B1 - Engine type: Turbo-fan - Power: 27,300 lb thrust - Installed in: 9 registered aircraft - Page: https://openairdocs.org/engine/cfm-international-cfm56-7b27-b1-series The registry names only the engine series, so ADs for every model in the series are matched. ## ADs that may apply (OpenAirDocs) Matched to this engine model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment. - [AD 2023-05-05](https://openairdocs.org/ad/2023-05-05): Turbine Engine Compressor Section · CFM International CFM56-5B1, CFM56-5B1/2P, CFM56-5B1/3 and 98 more. Effective May 10, 2023 - [AD 2022-02-03](https://openairdocs.org/ad/2022-02-03): Turbine Engine Accessory Drive · CFM International CFM56-3, CFM56-3B, CFM56-3C and 34 more. Effective Mar 22, 2022 - [AD 2021-16-08](https://openairdocs.org/ad/2021-16-08): Turbine Section · CFM International CFM56-5B1, CFM56-5B1/2P, CFM56-5B1/P and 55 more. Effective Sep 28, 2021 - [AD 2018-26-01](https://openairdocs.org/ad/2018-26-01): Turbine Engine Compressor Section · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 46 more. Effective Jan 10, 2019 - [AD 2018-09-51](https://openairdocs.org/ad/2018-09-51): Engine · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 46 more. Effective Jun 7, 2018 - [AD 2015-18-04](https://openairdocs.org/ad/2015-18-04): 73-tooth gearshaft located in the engine accessory gearbox (AGB) · CFM International CFM56-3, CFM56-7B20, CFM56-7B20/2 and 47 more. Effective Oct 20, 2015 - [AD 2015-04-02](https://openairdocs.org/ad/2015-04-02): Dual engine thrust instability event · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 46 more. Effective Mar 31, 2015 - [AD 2010-13-09](https://openairdocs.org/ad/2010-13-09): Stage 3 low-pressure turbine (LPT) · CFM International CFM56-5, CFM56-5-A1/F, CFM56-5A4 and 88 more. Effective Jul 26, 2010 - [AD 2010-01-05](https://openairdocs.org/ad/2010-01-05): LP turbine rear frames · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 25 more. Effective Feb 18, 2010 - [AD 2009-11-02](https://openairdocs.org/ad/2009-11-02): HPC 4-9 spools · CFM International CFM56-2, CFM56-2A, CFM56-2B and 109 more. Effective Jun 23, 2009 - [AD 2008-03-09](https://openairdocs.org/ad/2008-03-09): Low pressure turbine rear frames (TRFs) · CFM International CFM56-7B18, CFM56-7B20, CFM56-7B22 and 10 more. Effective Mar 10, 2008 - [AD 2006-26-01](https://openairdocs.org/ad/2006-26-01): Fuel filters · CFM International CFM56-2, CFM56-2A, CFM56-2B and 93 more. Effective Jan 3, 2007 - [AD 2002-16-18](https://openairdocs.org/ad/2002-16-18): Low pressure turbine (LPT) nozzle segments · CFM International CFM56-5B1, CFM56-5B1/2P, CFM56-5B1/P and 33 more. Effective Sep 18, 2002 - [AD 2002-13-03](https://openairdocs.org/ad/2002-13-03): Turbofan Engines · CFM International CFM56-2, CFM56-2A, CFM56-2B and 55 more. Effective Aug 1, 2002 - [AD 2001-11-05](https://openairdocs.org/ad/2001-11-05): No. 4 Bearings · CFM International CFM56-2, CFM56-2B, CFM56-3 and 45 more. Effective Jun 11, 2001 - [AD 2001-02-12](https://openairdocs.org/ad/2001-02-12): On-Wing Torque Inspection · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B22 and 11 more. Effective Feb 14, 2001 - [AD 98-21-23](https://openairdocs.org/ad/98-21-23): Electronic Engine Control · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B22 and 10 more. Effective Nov 2, 1998 Historical (superseded or no longer in force): - [AD 2021-10-09](https://openairdocs.org/ad/2021-10-09) (historical): Turbine Engine Compressor Section · CFM International CFM56-5B1, CFM56-5B1/2P, CFM56-5B1/3 and 82 more. Effective Jun 24, 2021 - [AD 2019-12-05](https://openairdocs.org/ad/2019-12-05) (historical): Turbine Section · CFM International CFM56-5B1, CFM56-5B1/2P, CFM56-5B1/P and 39 more. Effective Jul 5, 2019 - [AD 2018-18-01](https://openairdocs.org/ad/2018-18-01) (historical): Turbine Engine Compressor Section · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 46 more. Effective Oct 16, 2018 - [AD 2018-10-11](https://openairdocs.org/ad/2018-10-11) (historical): Turbine Engine Compressor Section · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 46 more. Effective Jun 1, 2018 - [AD 2018-09-10](https://openairdocs.org/ad/2018-09-10) (historical): Turbine Engine Compressor Section · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 46 more. Effective May 14, 2018 - [AD 2013-26-01](https://openairdocs.org/ad/2013-26-01) (historical): Oil dynamic seal assembly · CFM International CFM56-3, CFM56-3B, CFM56-3C and 52 more. Effective Feb 3, 2014 - [AD 2000-12-01](https://openairdocs.org/ad/2000-12-01) (historical): Critical Life-Limited Parts · CFM International CFM56-2, CFM56-2A, CFM56-2B and 54 more. Effective Dec 11, 2000 ## Information bulletins (advisory) (4) - [SAIB NE-08-17R3](https://openairdocs.org/saib/NE-08-17R3): Turbine Section - Propulsion Technology LLC Unapproved Repair. Issued May 28, 2014 - [SAIB NE-08-17R2](https://openairdocs.org/saib/NE-08-17R2) (historical): Turbine Section - Propulsion Technology LLC Unapproved Repair. Issued Mar 7, 2011 - [SAIB NE-08-17R1](https://openairdocs.org/saib/NE-08-17R1) (historical): Propulsion Technology LLC Unapproved Repair. Issued May 22, 2008 - [SAIB NE-08-17](https://openairdocs.org/saib/NE-08-17) (historical): Propulsion Technologies International Unapproved Repair. Issued May 14, 2008 ## Registered aircraft (9) - [N277EA](https://openairdocs.org/aircraft/N277EA): [Umb Bank Na Trustee](https://openairdocs.org/faa-owner/UMB%20BANK%20NA%20TRUSTEE), [Salt Lake City, UT](https://openairdocs.org/faa-place/UT/Salt%20Lake%20City), built 2001, S/N 32359 - [N805DN](https://openairdocs.org/aircraft/N805DN): [Delta Air Lines Inc](https://openairdocs.org/faa-owner/DELTA%20AIR%20LINES%20INC), [Atlanta, GA](https://openairdocs.org/faa-place/GA/Atlanta), built 2013, S/N 31913 - [N830SY](https://openairdocs.org/aircraft/N830SY): [Sun Country Inc](https://openairdocs.org/faa-owner/SUN%20COUNTRY%20INC), [Minneapolis, MN](https://openairdocs.org/faa-place/MN/Minneapolis), built 2001, S/N 30706 - [N831SY](https://openairdocs.org/aircraft/N831SY): [Sun Country Inc](https://openairdocs.org/faa-owner/SUN%20COUNTRY%20INC), [Minneapolis, MN](https://openairdocs.org/faa-place/MN/Minneapolis), built 2002, S/N 28249 - [N855DN](https://openairdocs.org/aircraft/N855DN): [Delta Air Lines Inc](https://openairdocs.org/faa-owner/DELTA%20AIR%20LINES%20INC), [Atlanta, GA](https://openairdocs.org/faa-place/GA/Atlanta), built 2016, S/N 31966 - [N867DN](https://openairdocs.org/aircraft/N867DN): [Umb Bank Na Trustee](https://openairdocs.org/faa-owner/UMB%20BANK%20NA%20TRUSTEE), [Salt Lake City, UT](https://openairdocs.org/faa-place/UT/Salt%20Lake%20City), built 2016, S/N 31979 - [N906DN](https://openairdocs.org/aircraft/N906DN): [Delta Air Lines Inc](https://openairdocs.org/faa-owner/DELTA%20AIR%20LINES%20INC), [Atlanta, GA](https://openairdocs.org/faa-place/GA/Atlanta), built 2018, S/N 64879 - [N920DU](https://openairdocs.org/aircraft/N920DU): [Bank Of Utah Trustee](https://openairdocs.org/faa-owner/BANK%20OF%20UTAH%20TRUSTEE), [Salt Lake City, UT](https://openairdocs.org/faa-place/UT/Salt%20Lake%20City), built 2019, S/N 63533 - [N950AM](https://openairdocs.org/aircraft/N950AM): [Umb Bank Na Owner Trustee](https://openairdocs.org/faa-owner/UMB%20BANK%20NA%20OWNER%20TRUSTEE), [Salt Lake City, UT](https://openairdocs.org/faa-place/UT/Salt%20Lake%20City), S/N 35115 ## NTSB investigations None matched to aircraft with this engine model. ## FAA accident and incident reports None matched to aircraft with this engine model. ## Service difficulty reports (53, newest 50) As reported by operators and repair stations, by the model named in the report. - [SDR DALA2026092105254](https://openairdocs.org/sdr/DALA2026092105254), Sep 17, 2026: IDG. INOPERATIVE. ABORTED TAKEOFF AT 60KTS DUE TO A NR 1 GENERATOR SOURCE OFF LIGHT. DEFERRED NR 1 GENERATOR PER MEL 24-000-01. REPLACED ENGINE 1 IDG. (LP 9109948 - AIRCRAFT WAS - [SDR DALA2026082404801](https://openairdocs.org/sdr/DALA2026082404801), Aug 21, 2026: ENGINE. FAILED. IFSD/ATB/DE - DUE TO RIGHT ENGINE FAILURE SHORTLY AFTER TAKEOFF. FOUND METAL IN THE TAILPIPE, REPLACED ENGINE. (9587390) AIRCRAFT WAS GROUNDED - [SDR DALA2026080604565](https://openairdocs.org/sdr/DALA2026080604565), Aug 5, 2026: BLADE. MISSING. EMERGENCY DECLARED, AND AIR TURNBACK DUE TO LT ENGINE COMPRESSOR STALL & LOUD BANG DURING CLIMB. REDUCED ENGINE SPEED TO IDLE AND COULD NOT ADVANCE THROTTLES WI - [SDR DALA2026072804369](https://openairdocs.org/sdr/DALA2026072804369), Jul 28, 2026: ENGINE. FAILED. DIV/IFSD/DE - RIGHT ENGINE FAILURE INFLIGHT. METAL FOUND IN RIGHT ENGINE TAIL PIPE, ENGINE WAS R & R. (8758586) AIRCRAFT WAS GROUNDED - [SDR DALA2026052903275](https://openairdocs.org/sdr/DALA2026052903275), May 26, 2026: ENGINE. FAILED. SHIP 3833 -ATB/IFSD/DE- DUE TO RIGHT ENGINE FAILED DURING CLIMB. CORRECTIVE ACTION: MAINTENANCE REPLACED THE RIGHT ENGINE ON LOG PAGE 1612033 IAW AMDS W/C 7100- - [SDR DALA2026052603160](https://openairdocs.org/sdr/DALA2026052603160), May 24, 2026: ENGINE. FAILED. -ATB/IFSD/DE- DUE TO LEFT ENGINE FAIL ON CLIMB OUT OF ATL. ENGINE WAS SHUT DOWN AND RETURNED TO ATL. REMOVED AND REPLACED THE LEFT ENGINE. REFERENCE LOG PAGE 16 - [SDR DALA2026052103107](https://openairdocs.org/sdr/DALA2026052103107), May 20, 2026: ENGINE. FAILED. -ATB/IFSD/DE- DUE TO RIGHT ENGINE FAILED ON CLIMB OUT OF ATL. ENGINE WAS SHUT DOWN AND RETURNED TO ATL. REPLACED THE #2 ENGINE ON LOG PAGE 1600052. (LOG 8488448 - [SDR DALA2026051803045](https://openairdocs.org/sdr/DALA2026051803045), May 17, 2026: ENGINE. SHUTDOWN. IFSD/ATB/DE- EXPERIENCED LEFT ENGINE SHUTDOWN/FAILURE. FLIGHT RETURNED TO MSP AND THE CAPTAIN DECLARED AN EMERGENCY WITH ATC. FOUND METAL DEBRIS IN TAIL PIPE. L - [SDR DALA2026051803046](https://openairdocs.org/sdr/DALA2026051803046), May 17, 2026: COMPRESSOR. STALLED. ATB/IFSD/DE- DECLARED AN EMERGENCY AND RETURNED TO CLE DUE RIGHT ENGINE COMPRESSOR STALL. CREW DID SHUT THE ENGINE DOWN. FOUND METAL IN THE TAILPIPE. REMOVED AN - [SDR DALA2026050502844](https://openairdocs.org/sdr/DALA2026050502844), May 3, 2026: COMPRESSOR. STALLED. DIV/DE- DUE TO LEFT ENGINE COMPRESSOR STALL AND UNABLE TO ADVANCE ENGINE SPEED ABOVE IDLE WITHOUT MORE STALLS. BORESCOPE INSPECTION OF HPC SHOWS 4TH AND 8TH STA - [SDR DALA2026033002067](https://openairdocs.org/sdr/DALA2026033002067), Mar 29, 2026: ENGINE. MAKING METAL. SHIP 3908 -IFSD/DIV/DE- LEFT ENGINE WAS SHUT DOWN DUE TO HIGH VIBRATION AND LOUD BANG DURING CRUISE. CORRECTIVE ACTION: FOUND METAL IN THE TAILPIPE. LEFT ENGINE - [SDR DALA2026022701399](https://openairdocs.org/sdr/DALA2026022701399), Feb 23, 2026: BLADES. DAMAGED. SHIP 3942 -ATB/IFSD- LEFT ENGINE FAILED DURING TAKEOFF. CORRECTIVE ACTION: LPT BLADES HEAVILY DAMAGED AND METAL IN THE TAILPIPE. REMOVED AND REPLACED THE LEFT E - [SDR DALA2025122909471](https://openairdocs.org/sdr/DALA2025122909471), Dec 28, 2025: ENGINE. FAILED. ATO- REJECTED TAKEOFF AT 110 KNOTS DUE TO LEFT ENGINE FAIL. MAINTENANCE REPLACED THE NUMBER 1 ENGINE PER AMDSWC 7100-4423-LH. - [SDR DALA2025112408551](https://openairdocs.org/sdr/DALA2025112408551), Nov 20, 2025: ENGINE. FAILED. ATB/IFSD/DE- LEFT ENGINE FAILED AFTER TAKEOFF. DECLARED EMERGENCY AND RETURNED TO ATL. LEFT ENGINE CHANGED ON LOG PAGE 1310419. - [SDR DALA2025102707838](https://openairdocs.org/sdr/DALA2025102707838), Oct 22, 2025: TRANSMITTER. LEAKING. (LOG 7403834) FAIRLY STRONG RAW FUEL ODOR IN THE FLIGHT DECK UPON SHUTDOWN OF #1 ENGINE. FOUND FUEL FLOW TRANSMITTER LEAKING. R/R TRANSMITTER PER B737 AMM 73-31 - [SDR DALA2025102007634](https://openairdocs.org/sdr/DALA2025102007634), Oct 20, 2025: ENGINE. MAKING METAL. SHIP 3832 - IFSD/ATB/DE - AIRCRAFT RETURNED TO EWR DUE TO LEFT ENGINE FAILURE. CORRECTIVE ACTION: METAL FOUND IN TAILPIPE, LEFT ENGINE REPLACED ON LOG PAGE 1260 - [SDR DALA2025092306942](https://openairdocs.org/sdr/DALA2025092306942), Sep 22, 2025: ENGINE. FAILED. IFSD/ATB- AIRCRAFT RETURNED TO ATL DUE TO LEFT ENGINE FAILURE DURING CLIMB. METAL FOUND IN TAILPIPE, ENGINE REPLACEMENT PER AMDS WC 7100-4423-LH AND LOG PAGE 12 - [SDR SCNA20250714257](https://openairdocs.org/sdr/SCNA20250714257), Jul 14, 2025: ENGINE. FAILED. SEVERE ENGINE DAMAGE #2 CLIMBING OUT OF 14,000 FT REDLINE EGT NO ROTATION N2 N1 14% FA'S REPORTED ALOT OF SPARKS MODERATE VIBRATION. REMOVED AND REPLACED #2 ENG - [SDR DALA2025062404705](https://openairdocs.org/sdr/DALA2025062404705), Jun 21, 2025: GEARBOX. DAMAGED. SHIP 3812 -IFSD- ON APPROACH AT FL100 CREW RECEIVED A RIGHT ENGINE OIL FILTER BYPASS INDICATION. QRH WAS PERFORMED AND ENGINE WAS SHUT DOWN BY CREW AT FL050. EM - [SDR DALA2025053004160](https://openairdocs.org/sdr/DALA2025053004160), May 29, 2025: ENGINE. FAILED. SHIP 3813 -RTO- DUE TO RIGHT ENGINE FAILURE DURING TAKEOFF. CORRECTIVE ACTION: RIGHT ENGINE VISUAL INSPECTION REVEALED HEAVY DAMAGE TO LPT BLADES. ENGINE REPLAC - [SDR DALA2025041502938](https://openairdocs.org/sdr/DALA2025041502938), Apr 13, 2025: LINE. DEFECTIVE. SHIP 3801 -MISC/DE- DECLARED EMERGENCY ON DESCENT TO DTW DUE TO RIGHT ENGINE LOW DUCT PRESSURE AND ENGINE VIBRATION. CORRECTIVE ACTION: REPLACED PRSOV CONTROL P - [SDR DALA2025022001339](https://openairdocs.org/sdr/DALA2025022001339), Feb 19, 2025: REGULATOR. INOPERATIVE. SHIP 3922 -ATB- RETURNED TO STL DUE TO INABILITY TO MAINTAIN CABIN PRESSURE. CORRECTIVE ACTION: MAINTENANCE REPLACED THE #2 BLEED AIR REGULATOR PER B737 AMM 36- - [SDR DALA2024122712020](https://openairdocs.org/sdr/DALA2024122712020), Dec 26, 2024: BLEED VALVE. FAULTED. SHIP 3718 -DIV- DIVERTED TO CVG DUE TO LEFT ENGINE BLEED FAIL UNABLE TO MAINTAIN CABIN PRESSURE. CORRECTIVE ACTION: REPLACED LEFT ENGINE BLEED AIR REGULATOR AND - [SDR DALA2024102810444](https://openairdocs.org/sdr/DALA2024102810444), Oct 28, 2024: ENGINE. FAILED. SHIP 3818 -ATB/IFSD- RETURNED TO SMF DUE TO LEFT ENGINE FAILURE. CORRECTIVE ACTION: LEFT ENGINE REPLACED IAW AMDS WORKCARD 7100-4423-LH. ALL OPS GOOD, REF LOG P - [SDR DALA2024052305454](https://openairdocs.org/sdr/DALA2024052305454), May 22, 2024: ANTI-ICE VALVE. INOPERATIVE. SHIP 3923 -DIV- DIVERTED TO DTW DUE TO LEFT ENGINE NOSE COWL ANTI-ICE DISAGREE. CORRECTIVE ACTION: REPLACED LEFT NOSE COWL ANTI-ICE VALVE, RE-SECURED CANNON PLU - [SDR DALA2024040804181](https://openairdocs.org/sdr/DALA2024040804181), Apr 7, 2024: PUMP. INOPERATIVE. (LOG 5297290) BOTH ENG RUNNING TAXI OUT ALL INDICATIONS NORMAL LT ENG FAILED JUST BEFORE TAKEOFF. JUST ROLLED BACK AND QUIT. R&R HMU PER B737 AMM 73-21. R&R FUE - [SDR DALA2024032303686](https://openairdocs.org/sdr/DALA2024032303686), Mar 20, 2024: ENGINE. STALLED. SHIP 3805 -ATB- DUE LEFT ENGINE TO STALLS AND SURGE AFTER TAKEOFF WITH FLAMES REPORTED FROM EXHAUST. CORRECTIVE ACTION: PERFORMED BORESCOPE AND FOUND DAMAGE TO - [SDR DALA2024031203242](https://openairdocs.org/sdr/DALA2024031203242), Mar 11, 2024: FUEL CONTROL. INOPERATIVE. (LOG 5021672) TAXIING OUT AFTER NORMAL ENGINE START WENT TO TRANSFER POWER AND LEFT ENGINE UN-COMMANDED SHUT DOWN. REMOVED AND REPLACED LEFT ENGINE FUEL PUMP AN - [SDR DALA2024012301041](https://openairdocs.org/sdr/DALA2024012301041), Jan 21, 2024: GENERATOR. INOPERATIVE. SHIP 3828 - DIV - TO MEM DUE TO LOSS OF RIGHT ENGINE GENERATOR. APU WOULD NOT START. CORRECTIVE ACTION: #2 GCU FAULTS IDG. REPLACED RIGHT ENGINE IDG. REPLACED A - [SDR DALA2023102608803](https://openairdocs.org/sdr/DALA2023102608803), Oct 19, 2023: UNKNOWN. UNKNOWN. (LOG 4547340) LARGE BIRD INGESTED IN RIGHT ENGINE ON TAKEOFF. EGT AND VIBS ELEVATED 470 C & 1.1 VIB NO OTHER IND. PERF. WATER WASH PER B737 AMM 72-00-00. CLEANE - [SDR DALA2023071305699](https://openairdocs.org/sdr/DALA2023071305699), Jul 10, 2023: UNKNOWN. UNKNOWN. SHIP 3809 -PRESS- DESCENDING OUT OF FL200 CABIN ALT WARNING OCCURRED. DONNED O2 MASKS AND DESCENDED TO 11K. LEFT PACK ON MEL. CORRECTIVE ACTION: PERFORMED RT EN - [SDR DALA2023042003114](https://openairdocs.org/sdr/DALA2023042003114), Apr 18, 2023: UNKNOWN. UNKNOWN. SHIP 3867 -RTO- DUE TO RIGHT ENGINE CONTROL LIGHT AT 80 KTS. CORRECTIVE ACTION: FOUND RIGHT ENGINE ALTERNATE POWER CIRCUIT BREAKER TRIPPED AND WILL NOT RESET. P - [SDR DALA2023032102153](https://openairdocs.org/sdr/DALA2023032102153), Mar 20, 2023: IDG. INOPERATIVE. SHIP 3861 -ATB- DUE TO BIRD STRIKE ON DEPARTURE. LEFT ENGINE GENERATOR INOP. CORRECTIVE ACTION: PERFORMED GCU BITE CHECK. NO FAULTS. FOUND DPI EXTENDED. INSPECT - [SDR DALA2022111407313](https://openairdocs.org/sdr/DALA2022111407313), Nov 12, 2022: PUMP. FAULTED. DIVERSION DUE TO LOSS OF THE A HYD SYS. MAINTENANCE REPLACED THE LEFT ENGINE EDP, FILTER, SUPPLY PRESSURE AND CASE DRAIN HOSES, PYLON HYD QD FITTING AND GEARBOX - [SDR DALA2022011000163](https://openairdocs.org/sdr/DALA2022011000163), Jan 7, 2022: VALVE. LEAKING. (LOG 7813460) AFTER PUSHBACK #2 ENG HAD A FUEL LEAK AT ENGINE START. FOUND FUEL LEAKING FROM HPTACC VALVE DRAIN. REMOVED AND REPLACED HPTACC VALVE PER B737 AMM - [SDR DALA2020070802558](https://openairdocs.org/sdr/DALA2020070802558), Jul 8, 2020: HMU. DEFECTIVE. IFFO & DIV - FLIGHT CREW REPORTED HEARING LOUD RUMBLES FROM THE LEFT ENGINE AND THEN THE ENGINE FLAMED OUT. FLIGHT CREW DIVERTED TO STL. MAINTENANCE CHECKED LEF - [SDR DALA201908014522](https://openairdocs.org/sdr/DALA201908014522), Jul 30, 2019: SHUTOFF VALVE. MALFUNCTIONED. ATB - DUE TO THE LEFT ENGINE BLEED AT ZERO. PERFORMED PNEUMATIC HEALTH CHECK. FOUND PRSOV CONTROL PRESSURE FLEX HOSE LEAKING. REPLACED SAME. ALSO HSR (HIGH STAG - [SDR ASAA2018122417525](https://openairdocs.org/sdr/ASAA2018122417525), Dec 21, 2018: ANTI-ICE VALVE. INTERMITTENT. ENG #2 ANTI ICE VALVE FAILED CLOSED. GROUNDED - YES. FOUND #2 ENG COWL ANTI-ICE VALVE STICKING INTERMITTENT THROUGH CLOSE/OPEN CYCLE. REMOVED AND REPLACED #2 EN - [SDR ASMF201801018](https://openairdocs.org/sdr/ASMF201801018), Jan 6, 2018: FUEL HEATER. LEAKING. AIRCRAFT RETURNED TO PLATFORM DUE TO A FUEL LEAK IN THE RIGHT ENGINE, AFTER ENGINE START. MAINTENANCE DETECTED THE FUEL SERVO HEATER LEAKING. THE RIGHT FUEL SER - [SDR ASMF20170531004](https://openairdocs.org/sdr/ASMF20170531004), May 27, 2017: PRESSURE SWITCH. FAILED. AIRCRAFT RETURNED TO PLATFORM DUE TO DURING ENGINE START, THE LEFT ENGINE FUEL FILTER BY PASS LIGHT TURNED ON. MAINTENANCE PERSONNEL REPLACED THE LEFT ENGINE DI - [SDR ASMF20170424002](https://openairdocs.org/sdr/ASMF20170424002), Mar 16, 2017: FAN. FOD. DURING TRANSIT CHECK, DETECTED FOREIGN OBJECT DAMAGE AT INLET CASE FAN OF THE LEFT ENGINE. MAINTENANCE PERSONNEL PERFORMED A REVISION TO LEFT ENGINE IAW AMM 71- - [SDR ASMF201610001](https://openairdocs.org/sdr/ASMF201610001), Aug 6, 2016: ENGINE. VIBRATION. CAPTAIN REPORTED THAT DURING CLIMB, THE RIGHT ENGINE REACHED 4.0 UNITS OF VIBRATION AND DURING CRUISE THE VIBRATION WAS STABILIZED IN 2.9 UNITS MAINTENANCE PERS - [SDR ASMF201608006](https://openairdocs.org/sdr/ASMF201608006), Jul 3, 2016: ENGINE. DAMAGED. IAW REMOTE DIAGNOSTIC SYSTEM, THE RT ENGINE HAD A SHARP DECREASE IN TAKEOFF, EGT MARGIN AND CORE SPEED AS WELL AS IN INCREASE IN EGT AND FUEL FLOW. MAINTENANCE - [SDR ASMF201511011](https://openairdocs.org/sdr/ASMF201511011), Nov 19, 2015: TRANSMITTER. FAILED. AIRCRAFT RETURNED TO PLATFORM DUE TO DURING TAXING, THE RT ENG OIL FILTER BY PASS LIGHT TURNED ON. PERFORMED REVISION TO CHIP DETECTOR IAW AMM 79-00-00, NO META - [SDR ASMF201510008](https://openairdocs.org/sdr/ASMF201510008), Aug 21, 2015: FAN. LACK OF LUBE. DURING CLIMB, THE RT ENG VIBRATION REACHED 2.5 UNITS. ACFT WAS SENT TO THE HANGAR & MX PERFORMED REVISION TO CHIP DETECTOR IAW AMM 79-00-00, NO METAL PARTICLES - [SDR ASMF201509004](https://openairdocs.org/sdr/ASMF201509004), Jul 25, 2015: WARNING SYSTEM. FALSE ACTIVATION. CAPTAIN REPORTED THAT DURING CLIMB, THE LT ENG VIBRATION REACHED 4.2 UNITS. PERFORMED FIM 77-31 TASK 801 & FIM 78-01 TASK PROCEDURES, NO DAMAGES WERE FOUND, TES - [SDR ASMF201507009](https://openairdocs.org/sdr/ASMF201507009), Jun 10, 2015: WIRE HARNESS. DAMAGED. AIRCRAFT RETURNED TO PLATFORM, AFTER LT ENG START, THE BLEED DUCT PRESS INDICATOR SHOWED 5 PSI & IT WAS STABILIZED AT 10 PSI. PERFORMED REVISION, DETECTING THE - [SDR ASMF201501019](https://openairdocs.org/sdr/ASMF201501019), Dec 12, 2014: BLADE. DAMAGED. DURING TRANSIT CHECK, IT WAS DETECTED NICKS IN TWO INLET CASE FAN BLADES OF THE RT ENG. PERFORMED REVISION DETECTING TWO NICKS OUT OF LIMIT IAW AMM 72-24-02. IN - [SDR ASMF2014061706005](https://openairdocs.org/sdr/ASMF2014061706005), Apr 14, 2014: FUEL HEATER. LEAKING. DURING RT ENG TEST RUNNING, DETECTED A FUEL LEAK AT RT ENG FUEL SERVO HEATER. THE SERVO HEATER WAS REPLACED IAW AMM 73-11-07, TESTED CORRECT. - [SDR ASMF201211011](https://openairdocs.org/sdr/ASMF201211011), Nov 20, 2012: CASE. DAMAGED. DURING TRANSIT CHECK, IT WAS DETECTED SCRATCH ON RT ENGINE FAN INLET CASE. ACFT WAS SENT TO THE HANGAR AND MX PERSONNEL PERFORMED AN ENGINE REVISION IAW MM 72-2 All 53: https://openairdocs.org/engine/cfm-international-cfm56-7b27-b1-series/reports.md ## STCs that may be installed (OpenAirDocs) (2) Approved for this engine model: the STC's model list names it on its data sheet, or a series that includes it. In force first, then newest. The registry doesn't record which STCs an aircraft has. - [STC SE04840NY](https://openairdocs.org/stc/SE04840NY): Installation of HarcoSemco Exhaust Gas Temperature (EGT) Electrical Harnesses in CFM56-7 engine. Kilroy Aviation LLC - [STC SE03036CH](https://openairdocs.org/stc/SE03036CH): Application of a deep compressive stress layer using a Low Plasticity Burnishing (LPB) process on CFM56-7 Series Engines Stage 1 High Pressure Compressor (HPC) Blade Dovetails in accordance with Delta Air Lines Inc. Drawing No. 72-0396, Revision B, dated November 3, 2011, or later FAA Approved revision. Delta Air Lines Inc ## PMA parts (OpenAirDocs) (over 1,000, first 50) Current parts manufacturer approvals (PMA): parts the FAA has approved companies to make as replacements or modifications. Each record lists its models as free text; OpenAirDocs matched them to this engine model on its data sheet, so check the FAA record before relying on it. Newest first. - [2564M19G01SD](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID183308050320261019152741.0001): Seal - Stg 2 Cprsr Sttr. Seal Dynamics Inc. A HEICO Aerospace Company · PMA PQ1715CE · Replaces 2564M19G01 · Oct 15, 2026 - [2564M19G01SD](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID183308050320261019152741.0001): Seal - Stg 2 Cprsr Sttr. Seal Dynamics Inc. A HEICO Aerospace Company · PMA PQ1715CE · Replaces 2564M19G01 · Oct 15, 2026 - [2564M15G02SD](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID182481008320261019152741.0001): Seal - Retainer Cprsr Sttr. Seal Dynamics Inc. A HEICO Aerospace Company · PMA PQ1715CE · Replaces 2564M15G02 · Oct 15, 2026 - [2564M15G02SD](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID182481008320261019152741.0001): Seal - Retainer Cprsr Sttr. Seal Dynamics Inc. A HEICO Aerospace Company · PMA PQ1715CE · Replaces 2564M15G02 · Oct 15, 2026 - [2564M19G02SD](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID171586083020261019152741.0001): Seal - Stg 2 Cprsr Sttr. Seal Dynamics Inc. A HEICO Aerospace Company · PMA PQ1715CE · Replaces 2564M19G02 · Oct 15, 2026 - [2564M19G02SD](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID171586083020261019152741.0001): Seal - Stg 2 Cprsr Sttr. Seal Dynamics Inc. A HEICO Aerospace Company · PMA PQ1715CE · Replaces 2564M19G02 · Oct 15, 2026 - [2564M15G01SD](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID139341463420261019152740.0001): Seal - Stg 3 Cprsr Sttr. Seal Dynamics Inc. A HEICO Aerospace Company · PMA PQ1715CE · Replaces 2564M15G01 · Oct 15, 2026 - [2564M15G01SD](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID139341463420261019152740.0001): Seal - Stg 3 Cprsr Sttr. Seal Dynamics Inc. A HEICO Aerospace Company · PMA PQ1715CE · Replaces 2564M15G01 · Oct 15, 2026 - [AAP-3179410-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID161769751220261022213314.0001): SETSCREW. Approved Air Parts, LLC · PMA PQ4173NE · Replaces Honeywell 3179410-1 · Oct 14, 2026 - [AAP-3179410-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID161769751220261022213314.0001): SETSCREW. Approved Air Parts, LLC · PMA PQ4173NE · Replaces Honeywell 3179410-1 · Oct 14, 2026 - [KT9974M10P207](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID156771068620261019153205.0001): Ring, Piston. Turbine Kinetics Inc., A HEICO Aerospace Company · PMA PQ0816NE · Replaces 9974M10P207 · Oct 7, 2026 - [KT9974M10P207](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID156771068620261019153205.0001): Ring, Piston. Turbine Kinetics Inc., A HEICO Aerospace Company · PMA PQ0816NE · Replaces 9974M10P207 · Oct 7, 2026 - [337-141-601-0KT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID157822411420261008134816.0001): Bolt. Turbine Kinetics Inc., A HEICO Aerospace Company · PMA PQ0816NE · Replaces 337-141-601-0 · Sep 29, 2026 - [337-141-601-0KT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID157822411420261008134816.0001): Bolt. Turbine Kinetics Inc., A HEICO Aerospace Company · PMA PQ0816NE · Replaces 337-141-601-0 · Sep 29, 2026 - [649-788-399-0JA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID103937182820260909145920.0001): Packing-Preformed O-Ring. Jet Avion Corporation A HEICO Aerospace Company · PMA PQ1015CE · Replaces 649-788-399-0 · Aug 24, 2026 - [649-788-399-0JA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID103937182820260909145920.0001): Packing-Preformed O-Ring. Jet Avion Corporation A HEICO Aerospace Company · PMA PQ1015CE · Replaces 649-788-399-0 · Aug 24, 2026 - [AAP-3181263-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID134991105620260923165754.0001): SPRING. Approved Air Parts, LLC · PMA PQ4173NE · Replaces Honeywell 3181263-1 · Aug 5, 2026 - [AAP-3181263-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID134991105620260923165754.0001): SPRING. Approved Air Parts, LLC · PMA PQ4173NE · Replaces Honeywell 3181263-1 · Aug 5, 2026 - [2002M87P02JA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID199317637820260806140031.0001): Gasket - Igniter Adapter. Jet Avion Corporation A HEICO Aerospace Company · PMA PQ1015CE · Replaces 2002M87P02 · Jul 30, 2026 - [2002M87P02JA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID199317637820260806140031.0001): Gasket - Igniter Adapter. Jet Avion Corporation A HEICO Aerospace Company · PMA PQ1015CE · Replaces 2002M87P02 · Jul 30, 2026 - [2002M87P01JA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID133871277820260806140030.0001): Gasket - Igniter Adapter. Jet Avion Corporation A HEICO Aerospace Company · PMA PQ1015CE · Replaces 2002M87P01 · Jul 30, 2026 - [2002M87P01JA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID133871277820260806140030.0001): Gasket - Igniter Adapter. Jet Avion Corporation A HEICO Aerospace Company · PMA PQ1015CE · Replaces 2002M87P01 · Jul 30, 2026 - [3177421JP-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID144029116620260805181453.0001): Setscrew. Jet Parts Engineering Inc · PMA PQ1739CE · Replaces 3177421-1 · Jul 16, 2026 - [3177421JP-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID144029116620260805181453.0001): Setscrew. Jet Parts Engineering Inc · PMA PQ1739CE · Replaces 3177421-1 · Jul 16, 2026 - [301-547-905-0JP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID163539788920260806140647.0001): Nut. Jet Parts Engineering Inc · PMA PQ1739CE · Replaces 301-547-905-0 · Jul 14, 2026 - [301-547-905-0JP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID163539788920260806140647.0001): Nut. Jet Parts Engineering Inc · PMA PQ1739CE · Replaces 301-547-905-0 · Jul 14, 2026 - [AAP-3181264-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID110152260220260804212133.0001): LINK ASSEMBLY. Approved Air Parts, LLC · PMA PQ4173NE · Replaces Honeywell 3181264-1 · Jun 29, 2026 - [AAP-3181264-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID110152260220260804212133.0001): LINK ASSEMBLY. Approved Air Parts, LLC · PMA PQ4173NE · Replaces Honeywell 3181264-1 · Jun 29, 2026 - [1211342-240-014JA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID101824618120260706131723.0001): Packing. Jet Avion Corporation A HEICO Aerospace Company · PMA PQ1015CE · Replaces 1211342-240-014 · Jun 25, 2026 - [1211342-240-014JA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID101824618120260706131723.0001): Packing. Jet Avion Corporation A HEICO Aerospace Company · PMA PQ1015CE · Replaces 1211342-240-014 · Jun 25, 2026 - [9523M35G03JP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID191057781220260806140516.0001): Arm Assembly. Jet Parts Engineering Inc · PMA PQ1739CE · Replaces 9523M35G03 · Jun 8, 2026 - [9523M35G03JP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID191057781220260806140516.0001): Arm Assembly. Jet Parts Engineering Inc · PMA PQ1739CE · Replaces 9523M35G03 · Jun 8, 2026 - [1385M33G03JP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID141058667820260806140515.0001): Arm Assembly. Jet Parts Engineering Inc · PMA PQ1739CE · Replaces 1385M33G03 · Jun 8, 2026 - [1385M33G03JP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID141058667820260806140515.0001): Arm Assembly. Jet Parts Engineering Inc · PMA PQ1739CE · Replaces 1385M33G03 · Jun 8, 2026 - [1476M79P05JA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID107210147820260616140659.0001): Damper - Forward Sleeve. Jet Avion Corporation A HEICO Aerospace Company · PMA PQ1015CE · Replaces 1476M79P05 · May 29, 2026 - [1476M79P05JA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID107210147820260616140659.0001): Damper - Forward Sleeve. Jet Avion Corporation A HEICO Aerospace Company · PMA PQ1015CE · Replaces 1476M79P05 · May 29, 2026 - [AAP-3177487-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID169754361520260623134833.0001): Setscrew. Approved Air Parts, LLC · PMA PQ4173NE · Replaces Honeywell 3177487-1 · May 26, 2026 - [AAP-3177487-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID169754361520260623134833.0001): Setscrew. Approved Air Parts, LLC · PMA PQ4173NE · Replaces Honeywell 3177487-1 · May 26, 2026 - [340-084-104-0JA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID177357668320260506211035.0001): Bracket. Jet Avion Corporation A HEICO Aerospace Company · PMA PQ1015CE · Replaces 340-084-104-0 · May 4, 2026 - [340-084-104-0JA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID177357668320260506211035.0001): Bracket. Jet Avion Corporation A HEICO Aerospace Company · PMA PQ1015CE · Replaces 340-084-104-0 · May 4, 2026 - [336-031-701-0JA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID144123523920260324201242.0001): Weight-Balance 2.9G. Jet Avion Corporation A HEICO Aerospace Company · PMA PQ1015CE · Replaces 336-031-701-0 · Feb 25, 2026 - [336-031-701-0JA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID144123523920260324201242.0001): Weight-Balance 2.9G. Jet Avion Corporation A HEICO Aerospace Company · PMA PQ1015CE · Replaces 336-031-701-0 · Feb 25, 2026 - [336-031-710-0JA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID129285223420260324201243.0001): Weight-Balance 6.5G. Jet Avion Corporation A HEICO Aerospace Company · PMA PQ1015CE · Replaces 336-031-710-0 · Feb 25, 2026 - [336-031-710-0JA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID129285223420260324201243.0001): Weight-Balance 6.5G. Jet Avion Corporation A HEICO Aerospace Company · PMA PQ1015CE · Replaces 336-031-710-0 · Feb 25, 2026 - [336-031-708-0JA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID112259513820260324201242.0001): Weight-Balance 5.7G. Jet Avion Corporation A HEICO Aerospace Company · PMA PQ1015CE · Replaces 336-031-708-0 · Feb 25, 2026 - [336-031-708-0JA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID112259513820260324201242.0001): Weight-Balance 5.7G. Jet Avion Corporation A HEICO Aerospace Company · PMA PQ1015CE · Replaces 336-031-708-0 · Feb 25, 2026 - [2949M03P01JA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID165472228620260225205426.0001): Blade Lock-Compressor Stg 8,9. Jet Avion Corporation A HEICO Aerospace Company · PMA PQ1015CE · Replaces 2949M03P01 · Feb 4, 2026 - [2949M03P01JA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID165472228620260225205426.0001): Blade Lock-Compressor Stg 8,9. Jet Avion Corporation A HEICO Aerospace Company · PMA PQ1015CE · Replaces 2949M03P01 · Feb 4, 2026 - [2684985JA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID180898542020260123155357.0001): Seal, Spring Loaded. Jet Avion Corporation A HEICO Aerospace Company · PMA PQ1015CE · Replaces 2684985 · Jan 22, 2026 - [2684985JA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID180898542020260123155357.0001): Seal, Spring Loaded. Jet Avion Corporation A HEICO Aerospace Company · PMA PQ1015CE · Replaces 2684985 · Jan 22, 2026 All of them: https://openairdocs.org/engine/cfm-international-cfm56-7b27-b1-series/pma.md --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.