# Service difficulty reports: CFM International CFM56-7B27/3 series

A list on [CFM International CFM56-7B27/3 series](https://openairdocs.org/engine/cfm-international-cfm56-7b27-3-series.md).

Newest first. General aviation reporting is voluntary.

Page 1 of 8 · 372 reports

- [SDR AALA202505192967](https://openairdocs.org/sdr/AALA202505192967.md): Probe · overtemp · May 17, 2025 · N868NN · Boeing 737823 · Engine EGT/TIT Indicating System
  > AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: ON THE TAKEOFF ROLL, ENGINE 2 EXCEED THE EGT LIMITS FOR 45 SECONDS TO ONE MINUTE AND WAS AT APPROXIMATELY 1,000 CELSIUS. NUMBER 1 ENGINE STAYED WITHIN LIMITS. AIRCRAFT DIVERTED TO AND LANDED SAFELY AT PH
- [SDR AALA202407238218](https://openairdocs.org/sdr/AALA202407238218.md): Engine · failed · Jul 21, 2024 · N970AN · Boeing 737823 · Engine (Turbine/Turboprop)
  > AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: RIGHT ENGINE FAILURE INFLIGHT AT 10K'; AIRCRAFT AIR INTERRUPTED TO AND LANDED SAFELY AT DFW. REMOVE AND REPLACED RIGHT ENGINE. PER CARD 08L40072003.
- [SDR ASAA2024022348140](https://openairdocs.org/sdr/ASAA2024022348140.md): Track Splice · corroded · Feb 23, 2024 · N290AK · Boeing 737990ER · Fuselage, Seat/Cargo Attach Fittings
  > AFT PIT RBL 3 FLOOR RAIL SPLICE AT STA 727I+4 IS CORRODED. GROUNDED - YES. FABRICATED AND REPLACED AFT PIT FLOOR RAIL SPLICE RBL 3 STA 727I+4 IAW 737-900 SRM 51-40-02-0G-0 & DWG 146A7506W-.5" O-.070" R- 0 L- 1" D-.070".
- [SDR ASAA2023093045376](https://openairdocs.org/sdr/ASAA2023093045376.md): Engine · damaged · Sep 30, 2023 · N565AS · Boeing 737890 · Engine (Turbine/Turboprop)
  > #1 ENGINE LPTACC COOLING AIR MANIFOLD HAS CHAFING DAMAGE FROM CONTACT WITH THE I/B T/R BLANKET (BELOW CLAMP). GROUNDED - YES. OTS OF LIMITS REF ESM TASK 72-54-18-200-001 PARA. 4. 65613 09/30/2023. ENGINE REMOVED, ESN 895978, TANSFERED DISCREPENCY TO EBU SHOP W
- [SDR ASAA2023093045382](https://openairdocs.org/sdr/ASAA2023093045382.md): Guide Vane · cracked · Sep 30, 2023 · N565AS · Boeing 737890 · Turbine Section
  > DURING 3 CARD BORO INSPECTION FOUND 6 LPT NOZZLE GUIDE VANES W/ INTERSECTING CRACKS AND MISSING MATERIAL. AMM REF 72-00-00-200-811-F00 F, 2, D 3. GROUNDED - YES. #1 ENGINE, ESN 895978, REMOVED. DISCREPENCY TRANSFERED TO EBU SHOP W/O #1971172.
- [SDR ASAA2023092945369](https://openairdocs.org/sdr/ASAA2023092945369.md): Engine · making metal · Sep 29, 2023 · N581AS · Boeing 737890 · Engine (Turbine/Turboprop)
  > REF. W/O 1970762 T/C PWRPL-79EO-069942-1 FOUND #1 ENG AGB/TGB CHIP DETECTOR WITH MAGNETIC SHINY MATERIAL. GROUNDED - YES. ENGINE REMOVED, ESN 896209, TRANSFERED TO SHOP W/O 1971579.
- [SDR ASAA2023092945370](https://openairdocs.org/sdr/ASAA2023092945370.md): Engine · making metal · Sep 29, 2023 · N581AS · Boeing 737890 · Turbine Engine Accessory Drive
  > REF. W/O 1970762 T/C PWRPL-79EO-06942-1 FOUND #1 ENG FWD SUMP CHIP DETECTOR WITH MAGNETIC MATERIAL. GROUNDED - YES. ENGINE REMOVED, ESN 896209, TRANSFERED TO SHOP W/O 1971579.
- [SDR ASAA2023092945371](https://openairdocs.org/sdr/ASAA2023092945371.md): Engine · making metal · Sep 29, 2023 · N581AS · Boeing 737890 · Engine (Turbine/Turboprop)
  > REF. W/O 1970762 T/C PWRPL-79EO-06942-1 FOUND #1 ENG AFT SUMP CHIP DETECTOR WITH MAGNETIC MATERIAL. GROUNDED - YES. ENGINE REMOVED, ESN 896209, TRANSFERED TO SHOP W/O 1971579.
- [SDR ASAA2023092745444](https://openairdocs.org/sdr/ASAA2023092745444.md): Engine · abnormal · Sep 27, 2023 · N565AS · Boeing 737890 · Engine Temperature Indicating System
  > CFM REPORTS #1 ENGINE EGT INDICATION ISSUES AND TREND DATA SHOWS EXCESSIVE SCATTER IN DATA POINTS. GROUNDED - YES. TRANSFERRED TSR TO EBU SHOP W/O 1971172 N/R # 00004. #1 ENGINE CHANGED.
- [SDR ASAA2023052643389](https://openairdocs.org/sdr/ASAA2023052643389.md): Hook · worn · May 26, 2023 · N533AS · Boeing 737890 · Engine (Turbine/Turboprop)
  > WHILE PERFORMING T/C SBCFM56-7B-1074-1 ON THE #2 ENG, ESN 804633 NOTED THAT THE STAGE 3 J-HOOK WAS WORN COMPLETELY THROUGH @ THE 12 O'CLOCK POSITION. GROUNDED - YES. REMOVED #2 ENGINE. TRANSFERRED DEFECTS TO SHOP W/O #1955720.
- [SDR ASAA2023052443360](https://openairdocs.org/sdr/ASAA2023052443360.md): Engine · damaged · May 24, 2023 · N531AS · Boeing 737890 · Engine (Turbine/Turboprop)
  > WHILE ACCOMPLISHING ASA SBCFM56-7B-72-1074-1. FOUND ON STAGE 3 SLAB PIN AT THE 9 O'CLOCK POSITION LIBERATED. CAUSING DAMAGE TO THE J-HOOK AND SPOOL. REQUIRES ENGINE CHANGE ON #1 ENG S/N 804245. GROUNDED - YES. REMOVED ENGINE S/N 804245. REFERENCE ASA SHOP W/O
- [SDR ASAA2023052443386](https://openairdocs.org/sdr/ASAA2023052443386.md): Oil System · leaking · May 24, 2023 · N508AS · Boeing 737890 · Turbine Engine Oil System
  > WHILE ACCOMPLISHING ASA TSR714364 FOUND FWD SUMP DRAIN LEAKING AT 1 DROP EVERY 3 SECOND AT IDLE. DURING PART POWER LEAK CHECK ON TSR, FWD SUMP DRAIN FILLED BAG AND BURST. PER 71-71-00-010-004-F00. SERVICEABLE LIMITS 20 DROP PER SECOND. ESN # 896-629 #1 ENGINE.
- [SDR ASAA2023052243363](https://openairdocs.org/sdr/ASAA2023052243363.md): Engine · indication · May 22, 2023 · N533AS · Boeing 737890 · Engine Temperature Indicating System
  > GE DIAGNOSTICS REPORTS #1 ENGINE TREND DATA HAS EXPERIENCED A DECREASE/INCREASE IN DELTA EGT AND DEC/INC IN HOT DAY MARGIN. DELTA FUEL FLOW AND DELTA CORE SPEED REMAIN STABLE. EGT INDICATION ERRORS ARE SUSPECTED. GROUNDED - YES. #1 ENG (S/N 804627) WAS REPLACE
- [SDR ASAA2023052143317](https://openairdocs.org/sdr/ASAA2023052143317.md): Hook · worn · May 21, 2023 · N533AS · Boeing 737890 · Turbine Engine Compressor Section
  > WHILE ACCOMPLISHING ASA T/C SBCFM56-7B-72-1074-1 FOUND J HOOK WORN THROUGH AND MISSING MATERIAL AT 2 LOCATION ON #1 ENGINE 4TH STAGE VSV. PER STEP 8 A1 REQUIRES ENGINE CHANGE. CAN BE DEFERRED FOR A MAX OF 10 CYCLES, ENGINE SERIAL NUMBER 804627. GROUNDED - YES
- [SDR 2023F00076](https://openairdocs.org/sdr/2023F00076.md): None · none · Jan 16, 2023 · N368AR · Boeing 7378 · Standard Practices/Structures
  > FUEL DRIP ENGINE 2 DURING STAR, WAS ACCOMPLISHED TEST IDLE POWER LEACK CHECK IAW AMM. 71-00-00-700-801-F00, ENGINE VENTS AND DRAINS
- [SDR ASAA2023012341596](https://openairdocs.org/sdr/ASAA2023012341596.md): Guide Vane · degraded · Jan 14, 2023 · N564AS · Boeing 737890 · Turbine Engine Compressor Section
  > WHILE PERFORMING T/C 78472022 SDI BORO HPT BLADES ON ENGINE #2 S/N 896824 FOUND OF STAGE 1 LPT NOZZLE GUIDE VANES. GROUNDED - YES. REMOVED ENGINE, INSTALLED ENGINE
- [SDR ASAA2022122841298](https://openairdocs.org/sdr/ASAA2022122841298.md): Hook · worn · Dec 28, 2022 · N535AS · Boeing 737890 · Engine (Turbine/Turboprop)
  > WHILE ACCOMPLISHING BORO ASA TC SBCFM56-7B-72-1074-1 (VSV SYSTEM FOR ROTOR TO STATOR CONTACT) FOUND J-HOOK COMPLETELY WORN THROUGH AND OVERLAPPING AT STAGE 3 DUE TO CONTACT. ALSO MULTIPLE DAMAGES TO 4 STAGE HPC ROTOR BLADES AND A MISSING LIBERATED RADIAL SLAB
- [SDR ASAA2022122721251](https://openairdocs.org/sdr/ASAA2022122721251.md): Hook · worn · Dec 22, 2022 · N506AS · Boeing 737890 · Turbine Engine Compressor Section
  > REF T/C #SBCFM56-7B-72-1074-1 ON WING BORESCOPE INSPECTION OF METALLIC, HYBRID VSV SYSTEM FOR ROTOR TO STATOR CONTACT. FOUND STAGE 3 J-HOOK AT 6 OCLOCK WORN COMPLETELY THROUGH. GROUNDED - YES. ACCOMPLISHED ENGINE REMOVAL OF ESN # 897-310 REF T/C # 7847000. DEF
- [SDR ASAA2022121741170](https://openairdocs.org/sdr/ASAA2022121741170.md): Engine · fire · Dec 17, 2022 · N589AS · Boeing 737890 · Engine (Turbine/Turboprop)
  > #1 ENGINE LPT FRAME HAS WEAR MARK CAUSED BY A LOOSE FASTENER AT THE 6 O'CLOK POSITION OF THE AFT FLANGE. GROUNDED - YES. IN REFERENCE TO CFM56-7B ESM # 72-56-01 FOUND DAMAGE IN AREA THAT NO DEFINED LIMITS. MEASURE DAMAGE A L= 0.23", W=0.1". Y = 01012. MAPPED
- [SDR ASAA2022121541171](https://openairdocs.org/sdr/ASAA2022121541171.md): Engine · damaged · Dec 15, 2022 · N517AS · Boeing 737890 · Engine (Turbine/Turboprop)
  > WHILE ACCOMPLISHING ASA C SB CFM56-7B7B-72-1074-A ON #2 ENGINE S/N # 896912 MULTIPLE LOCATION, 3RD STG VSV SLAB HEAD PIN HAD LIBERATED AND CAUSED DAMAGE TO COMPRESSOR HUB. GROUNDED - YES. REMOVED #2 ENGINE S/N 896-912 REF. ASA T/C # 78471000 ON ASA W/O # 19322
- [SDR AALA202211234021](https://openairdocs.org/sdr/AALA202211234021.md): Compressor · stalled · Nov 21, 2022 · N990AN · Boeing 737823 · Turbine Engine Compressor Section
  > AIRCRAFT WAS GROUNDED: COMPRESSOR STALL #1 ENGINE ON BEGINNING OF DESCENT INTO LAX. EMERGENCY DECLARED; FLIGHT LANDED SAFELY. **SUPPLEMENTAL REPORT WILL BE SUBMITTED.** (OPEN)
- [SDR 2021F00239](https://openairdocs.org/sdr/2021F00239.md): Carbon Seal · damaged · Sep 13, 2021 · N377AR · Boeing 73786J · Turbine Engine Oil System
  > LEFT ENGINE OIL LEAK BY IDG DRAIN, DURING OVERNIGHT CHECK AT MEX STATION, DUE TO BORESCOPE INSPECTION AT LEFT ENGINE. MAINTENANCE PERSONNEL PERFORMED LEFT ENGINE BORESCOPE INSPECTION, DETECTING OIL LEAK BY IDG DRAIN WITH 45 DROPS PER MINUTES; SO THE IDG SEALOL
- [SDR 2021F00227](https://openairdocs.org/sdr/2021F00227.md): Fuel Heater · leaking · Sep 9, 2021 · N368AR · Boeing 73786J · Engine Fuel/Oil Cooler
  > FUEL LEAK IN THE RIGHT ENGINE, DURING TRANSIT CHECK, A FUEL LEAK WAS DETECTED IN THE RIGHT ENGINE. MAINTENANCE PERSONNEL PERFORMED REVISION ON RIGHT ENGINE VENTS AND DRAINS, DETECTING LEAK FUEL ON HEATER SERVO FUEL; SO THE HEATER SERVO FUEL WAS REPLACED IAW AM
- [SDR ASAA2021060735061](https://openairdocs.org/sdr/ASAA2021060735061.md): Blade · damaged · Jun 7, 2021 · N588AS · Boeing 737890 · Turbine Engine Compressor Section
  > REF T/C #7847001 SPECIAL DETAIL INSPECTION (SDI) (BORESCOPE) - CFM56-7 HPC #2 ENG. STAGES 2,4,6,8 BLADES. GROUNDED - YES. FOUND DAMAGE ON AFT SIDE STG 3 BLADES, DAMAGE TO STG 4 I/B CHANNEL, & DAMAGE ON L/E OF STG 8 BLADE. FURTHER EVALUATION OF BLADES 3 THRU 9
- [SDR ASAA2021051434822](https://openairdocs.org/sdr/ASAA2021051434822.md): Pin · damaged · May 14, 2021 · N530AS · Boeing 737890 · Turbine Engine Air Inlet Section
  > WHILE ACCOMPLISHING T.C. SB CFM56-7B-72-0986-1 FOUND 3RD STG VSV SLAB HEAD PIN LIBERATED @ 3 O'CLOCK POSITION ALF CAUSING DAMAGE TO BOOSTER SPOOL ALONG WITH DOWNSTREAM HPC BLADE DAMAGE. #2 POSN. ESN 805120. GROUNDED - YES. REMOVED AND REPLACED #2 ENGINE REF TC
- [SDR ASAA2021030134235](https://openairdocs.org/sdr/ASAA2021030134235.md): Blade · damaged · Mar 1, 2021 · N588AS · Boeing 737890 · Turbine Engine Compressor Section
  > ON FINAL IN SEA AT 300' AGL FOR 16R FULLY CONFIGURED AT FLAPS 30 DEGREES NOTICED SOUNDS OF COMPRESSOR STALL ON NO. 1 ENG AS WELL AS NI ON NO.1 ENG FLUCTUATION. SHUTDOWN NO.1 ENG EGT EXCEEDENCE. GROUNDED - YES. STARTED ACCOMP OF B737-800 FIM 71-05 TASK 805, ACC
- [SDR ASMF202104002](https://openairdocs.org/sdr/ASMF202104002.md): Servo · leaking · Feb 3, 2021 · N377AR · Boeing 73786J · Fuel Controlling System
  > AIRCRAFT RETURNED TO PLATFORM DUE TO DURING RIGHT ENGINE START, A FUEL LEAK WAS DETECTED IN THE RIGHT ENGINE. MAINTENANCE PERSONNEL PERFORMED REVISION, DETECTING LEAK FUEL BY SERVO FUEL HEAT IN THE RIGHT ENGINE; SO THE RIGHT ENGINE SERVO FUEL HEATER WAS REPLAC
- [SDR AALA202011259009](https://openairdocs.org/sdr/AALA202011259009.md): Eec · faulty · Nov 23, 2020 · N835NN · Boeing 737823 · Fuel Control/Turbine Engines
  > AIRCRAFT WAS GROUNDED. RT ENGINE HAS LONG PERIODS OF N1 AND N2 FUEL FLOW FLUCTUATIONS AT FL390/.78M N1 RANGE 91.4 TO 95.0, FUEL FLOW RANGE 2.5 TO 3.1, THROTTLES SPLIT WITH AUTOTHROTTLE ON, CHANGED ALTITUDE TO FL330 WITH NO IMPROVEMENT. AT IDLE, AUTOTHROTTLE
- [SDR AALA202011259010](https://openairdocs.org/sdr/AALA202011259010.md): Sensor · faulty · Nov 23, 2020 · N835NN · Boeing 737823 · Fuel Controlling System
  > AIRCRAFT WAS GROUNDED. RT ENGINE HAS LONG PERIODS OF N1 AND N2 FUEL FLOW FLUCTUATIONS AT FL390/.78M N1 RANGE 91.4 TO 95.0, FUEL FLOW RANGE 2.5 TO 3.1, THROTTLES SPLIT WITH AUTOTHROTTLE ON, CHANGED ALTITUDE TO FL330 WITH NO IMPROVEMENT. AT IDLE, AUTOTHROTTLE
- [SDR ASMF202101006](https://openairdocs.org/sdr/ASMF202101006.md): Valve · leaking · Oct 18, 2020 · N377AR · Boeing 73786J · Engine Cooling System
  > DURING OVERNIGHT CHECK AT MEX STATION, IT WAS DETECTED A FUEL LEAK AT RIGHT ENGINE. MAINTENANCE PERSONNEL PERFORMED REVISION. DETECTING THE RIGHT ENGINE HPTACC VALVE LEAKING. THE HPTACC VALVE WAS REPLACED, IAW AMM 75-21-01, TESTED CORRECT.
- [SDR ASMF202011006](https://openairdocs.org/sdr/ASMF202011006.md): Blade · dented · Sep 22, 2020 · N368AR · Boeing 73786J · Turbine Engine Air Inlet Section
  > DURING THE OVERNIGHT AT MEX STATION AND IN ACCORDANCE WITH EO 3772005 R4 OF LEFT ENGINE FAN DISK PRESSURE FACES INSPECTION, IT WAS DETECTED A DENT IN THE FAN BLADE ROOT NUMBER 3 AND 12, IAW AMM IT WAS NOT ALLOWED DAMAGES IN THAT AREA. SO THE LEFT ENGINE FAN B
- [SDR ASMF2020090705](https://openairdocs.org/sdr/ASMF2020090705.md): Actuator · failed · Jul 2, 2020 · N377AR · Boeing 73786J · Engine Thrust Reverser
  > DURING WORKS OF RETURN TO SERVICE, IT WAS DETECTED HIT ON BOTH ENG REVERSERS. MAINTENANCE PERSONNEL PERFORMED GROUND HANDLING EQUIPMENT HITS AIRPLANE CONDITIONAL INSPECTION, IAW AMM 05-51-59. DETECTING TWO CRACKS OF 0.750 LENGTH AND 1.00 LENGTH ON LT ENGINE
- [SDR ASAA2020060832783](https://openairdocs.org/sdr/ASAA2020060832783.md): Engine · oil consumption · Jun 6, 2020 · N593AS · Boeing 737890 · Engine (Turbine/Turboprop)
  > CONTINUED RISING OIL CONSUMPTION OF NR 2 ENGINE AFTER EXTENSIVE TROUBLESHOOTING, WITH NO FINDINGS. GROUNDED - YES. REMOVED AND REPLACED NR 2 ENGINE IAW T/C 78471000 AND 78471001.
- [SDR ASMF202006019](https://openairdocs.org/sdr/ASMF202006019.md): Fuel Heater · leaking · Mar 18, 2020 · N368AR · Boeing 73786J · Fuel Heater
  > DURING MAINTENANCE PROGRAM CHECK, IT WAS DETECTED A LEFT ENGINE FUEL LEAK. MAINTENANCE PERSONNEL PERFORMED REVISION, DETECTING FUEL LEAK IN THE FUEL HEATER SERVO. THE LT HEATER SERVO FUEL WAS REPLACED IAW AMM 79-21-02, TESTED CORRECT.
- [SDR ASAA2020031732438](https://openairdocs.org/sdr/ASAA2020031732438.md): Engine · oil consumption · Mar 13, 2020 · N586AS · Boeing 737890 · Engine (Turbine/Turboprop)
  > PASSING THROUGH 15000 FEET WE RECEIVED REVERSE VIDEO LOW ENGINE OIL QUANTITY AT 4 QUARTS. WE RAN QRH AND RETURNED TO PDX. OIL QUANTITY INCREASED TO 6 QUARTS ON DESCENT AND APPROACH. IT THEN DROPPED TO 3 QUARTS ON FINAL APPROACH. OIL TEMP ENTIRE TIME NEVER GOT
- [SDR ASAA2020021963209](https://openairdocs.org/sdr/ASAA2020021963209.md): Engine · out of limits · Feb 16, 2020 · N559AS · Boeing 737890 · Engine (Turbine/Turboprop)
  > GE DIAGNOSTICS REPORTS THE #2 ENGINE EXPERIENCED AN EGT EXCEEDANCE DURING TAKEOFF THAT MAY HAVE EXCEEDED THE TRANSIENT AREA LIMITS. PEAK EGT RECORDED ON REPORT 06 WAS 960 DEGREES DURING TAKEOFF (FLIGHT PHASE 4.) #2 ENGINE TREND DATA ALSO SHOWS A SUDDEN SHIFT
- [SDR ASAA2019103101187](https://openairdocs.org/sdr/ASAA2019103101187.md): Pin · missing · Oct 30, 2019 · N566AS · Boeing 737890 · Turbine Engine Compressor Section
  > DURING ACCOMPLISHMENT OF SBCFM56-7B-72-0986-1 BORESCOPE INSP, METALLIC HYBRID #1 ENGINE STEP 7 FOUND STAGE 3 PIN AT 9 O'CLOCK MISSING AND DAMAGED ON THE ROTOR, REQUIRES ENGINE CHANGE. GROUNDED - YES. REMOVED AND REPLACED ENGINE REF SHOP W/O # 1009709, N/R # 00
- [SDR CA190829004](https://openairdocs.org/sdr/CA190829004.md): O-Ring · unserviceable · Jul 15, 2019 · Boeing 737 · Accessory Gearboxes
  > (CAN) ENGINE REPORTED LOW OIL QUANTITY OBSERVED ON TAKEOFF ROLL. HIGH POWER RUN COMPLETED AFTER FLIGHT WITH EXCESSIVE LEAKAGE COMING OUT OF THE TGB HOUSING SLEEVE V-CLAMP CONNECTION TO THE AGB. GAP FOUND BETWEEN AGB HOUSING AND TGB TRANSFER TUBE. INITIAL VISU
- [SDR ASAA2019061749714](https://openairdocs.org/sdr/ASAA2019061749714.md): Pin · damaged · Jun 14, 2019 · N517AS · Boeing 737890 · Turbine Engine Compressor Section
  > DURING ACCOMPLISH REINSPECT OF #1 ENG ESN 896938 FOUND PIN STAGE 3 AT 3 OCLOCK POSITION ROTATED 90 DEG AND MIGRATING. REF SB CFM56-7B-72-0986-1 INITIAL WRITE-UP L/P #11759761. GROUNDED - YES. REMOVED AND REPLACED #1 ENGINE REF TC 78471000 AND 78471001.
- [SDR ASAA2019031428615](https://openairdocs.org/sdr/ASAA2019031428615.md): Frame · corroded · Mar 14, 2019 · N508AS · Boeing 737890 · Turbine Engine Compressor Section
  > CORROSION UNDER NR 2 ENGINE FAN FRAME NUTPLATES EXCEED ALLOWABLE BLEND LIMIT PER AMM 72-23-05-700-801-F00. GROUNDED - YES. REMOVED AND REPLACED NR 2 ENG REF T/C 78471000 AND 78471001.
- [SDR ASAA2019022728373](https://openairdocs.org/sdr/ASAA2019022728373.md): Engine · damaged · Feb 27, 2019 · N589AS · Boeing 737890 · Turbine Section
  > SILVER FILIFORM MATERIAL FOUND IN THE #1 ENGINE FLAME ARRESTOR AND AFT SUMP MCD. GROUNDED - YES. REMOVED 31 ENG OIL INLET COVER REF B737-800 AMM 72-56-00-000-802-F00. ACCOMPLISHED DIMENSIONAL INSP OF OUTER DIAMETER REAR VENT TUBE SEAL TEETH AFT SIDE VERTICAL M
- [SDR ASAA2018101626494](https://openairdocs.org/sdr/ASAA2018101626494.md): Not Reported · melted · Oct 16, 2018 · N564AS · Boeing 737890 · Turbine Engine Compressor Section
  > NR 1 ENGINE WAS OBSERVED TO HAVE MELTED MATERIAL ON THE FRONT COMPRESSOR CASE BETWEEN THE 2ND AND 3RD STAGE VSV ACTUATION RINGS FROM APPROX THE 4 O’CLOCK TO 2 O’CLOCK POSITION. GROUNDED - YES. REMOVED AND REPLACED NR 1 ENGINE.
- [SDR ASAA2018101526496](https://openairdocs.org/sdr/ASAA2018101526496.md): Nut Plate · corroded · Oct 15, 2018 · N535AS · Boeing 737890 · Turbine Engine Air Inlet Section
  > WHILE ACCOMPLISHING T/C 78472000 NR 1 ENGINE FOUND 3 NUTPLATE CORRODED BEHIND OIL TANK. GROUNDED - YES. REMOVED AND REPLACED ENGINE NR 1 REF W/O 428952.
- [SDR ASAA2018092626276](https://openairdocs.org/sdr/ASAA2018092626276.md): Pin · migrated · Sep 26, 2018 · N529AS · Boeing 737890 · Turbine Engine Compressor Section
  > NR 1 ENGINE S/N 802957 FAILED HYBRID METALLIC BORESCOPE T/C SBCFM-56-7B-72-09-86-1, THIRD STAGE VSV SLAB HEAD PIN AT 9 OCLOCK ROTATED 90 AND MIGRATING. PICTURES ON SERVER, INITIATED MIG 2C S/N 40-0005141. GROUNDED - YES. REMOVED AND REPLACED NR 1 ENGINE REF T/
- [SDR ASAA2018091726159](https://openairdocs.org/sdr/ASAA2018091726159.md): Guide Vane · damaged · Sep 17, 2018 · N585AS · Boeing 737890 · Turbine Section
  > WHILE ACCOMPLISHING T/C 78472022 NR 1 ENGINE FOUND 1 STAGE 1 LPT NGV BURNED WITH MISSING MATERIAL. BLADE LOCATED APPROX AT 12:00 POSITION 1. ALSO FOUND 4TH STAGE 1 LPT NGV CRACKED APPROX 3/4 WAY THROUGH ALL ON DIFFERENT SEGMENTS APPROX 12:00 TO 3: 00 POSITION.
- [SDR ASAA2018060824949](https://openairdocs.org/sdr/ASAA2018060824949.md): Engine · making metal · Jun 4, 2018 · N594AS · Boeing 737890 · Engine (Turbine/Turboprop)
  > DURING CLIMB OUT, RECEIVED A NR 1 ENGINE OIL FILTER BYPASS LIGHT. ACFT GROUNDED. ACCOMPLISHED AN EEC BITE IAW FIM 73-00, TASK 801, NO FAULT CODES NOTED. INSPECTED THE CHIP DETECTORS IAW AMM 79-21-05, THE FWD CHIP DETECTOR SHOWS SOME DEBRIS. ATTEMPTED TO
- [SDR ASAA2018060844916](https://openairdocs.org/sdr/ASAA2018060844916.md): Filter · warning light · Jun 4, 2018 · N594AS · Boeing 737890 · Turbine Engine Oil System
  > FOUND A NR 1 ENGINE SHORT TIME FAULT, 77-21131. THE N2 SPEED SENSOR SIGNALS DISAGREE ON FLIGHT LEG 3. ACFT GROUNDED. THE NR 1 ENGINE WAS REPLACED DUE TO AN OIL FILTER BYPASS LIGHT ILLUMINATION DUIRNG CLIMBOUT.
- [SDR AALA2018051700001](https://openairdocs.org/sdr/AALA2018051700001.md): Engine · malfunctioned · May 10, 2018 · N843NN · Boeing 737823 · Engine Oil Distribution (Airframe Furnished)
  > DURING CLIMB, AN OIL FILTER BYPASS LIGHT ILLUMINATED FOR THE RT ENGINE, FOLLOW BY LOW OIL PRESSURE AND OIL QUANTITY, SHOWED ZERO, THE ENGINE WAS SHUTDOWN. DECLARED AN EMERGECY, DIVERTED, AND LANDED WITHOUT FURTHER INCIDENT. THE AIRCRAFT WAS GROUNDED. RE
- [SDR ASAA2018050124440](https://openairdocs.org/sdr/ASAA2018050124440.md): Engine · making metal · Apr 27, 2018 · N506AS · Boeing 737890 · Engine (Turbine/Turboprop)
  > NR 2 ENGINE OIL FILTER BYPASS LIGHT ILLUMINATED DURING CRUISE AT FL 350 AND DID NOT EXTINGUISH WITH THE THRUST LEVER AT IDLE. ACFT GROUNDED. INSPECTED THE NR 2 ENGINE AND FOUND NOISY WHEN PULLING BLADE THROUGH ROTATION. INSPECTED THE MCD AND SCAVENGE FILTER
- [SDR ASAA2018040324125](https://openairdocs.org/sdr/ASAA2018040324125.md): Pin · migrated · Apr 3, 2018 · N531AS · Boeing 737890 · Turbine Engine Compressor Section
  > NR 1 ENGINE 9 O'CLOCK POSITION THIRD STAGE VSV SLAB HEAD PIN ROTATED 90 DEGREES WITH MIGRATION AND MATERIAL WEDGED BEHIND THE PIN BEYOND LIMITS IAW TC SBCFM56-7B-72-0986-1, STEP 7B. ACFT GROUNDED. REMOVED AND REPLACED THE NR 1 ENGINE IAW TC 78471000 AND 7847

Next page: https://openairdocs.org/engine/cfm-international-cfm56-7b27-3-series/reports.md?page=2

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy
FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet'
WHERE engine_model_key = 'CFM567B273'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/engine/cfm-international-cfm56-7b27-3-series/reports

---
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.