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

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

Newest first. General aviation reporting is voluntary.

Page 1 of 55 · 2,716 reports

- [SDR CALA2026110520786](https://openairdocs.org/sdr/CALA2026110520786.md): Filter · clogged · Nov 4, 2026 · N27477 · Boeing 737924ER · Air Distribution System
  > FUMES SMELL IN CABIN AND FLIGHT DECK W/ PACKS ON FROM APU BLEED AIR SMOKE FORM 46-6020 ADDED AIRCRAFT ON GATE FOR SEVERAL HOURS PRIOR TO APU START UP BY CREW. CREW STARTED APU AND PACKS. ODOR OF FUEL S ALMOST IMMEDIATELY BUT BRIEFLY. CREW SHUT DOWN PACKS AND A
- [SDR CALA2026110520771](https://openairdocs.org/sdr/CALA2026110520771.md): Battery Pack · inoperative · Nov 3, 2026 · N76508 · Boeing 737824 · Emergency Lighting
  > EMEGENCY POWER PACK, M1673, FAILS EMERGENCY LIGHTING FUNCTIONAL CHECK. BATTERY DISCHARGES IN LESS THAN 10 MINS. REMOVED AND REPLACED BATTERY PACK M1673 IAW AMM 33-51-06-960-805 LOG PAGE 3917704 NON-ROUTINE 1000094405 REMOVED AND INSTALL NEW BATTERY PACK M167
- [SDR CALA2026110520773](https://openairdocs.org/sdr/CALA2026110520773.md): Battery Pack · inoperative · Nov 3, 2026 · N76508 · Boeing 737824 · Emergency Lighting
  > EMEGENCY POWER PACK, M1675, FAILS EMERGENCY LIGHTING FUNCTIONAL CHECK. BATTERY DISCHARGES IN LESS THAN 10 MINS. REMOVED AND REPLACED BATTERY PACK M1675 IAW B737 AMM 33-51-06-960-805. REMOVED AND REPLACED BATTERY PACK M1675 IAW AMM 33-51-06-96 0-805.OPS CHECK
- [SDR CALA2026110320736](https://openairdocs.org/sdr/CALA2026110320736.md): Battery Pack · no test · Oct 31, 2026 · N76523 · Boeing 737824 · Emergency Equipment
  > EMER FLASHLIGHT FORWARD GALLEY WILL NOT TEST REPLACED BATTERY FLASHLIGHT WORKS. INSTALLED. GREEN TEST LIGHT OK.
- [SDR CALA2026102920643](https://openairdocs.org/sdr/CALA2026102920643.md): Smyd · faulted · Oct 29, 2026 · N68891 · Boeing 737924ER · Auto Flight System
  > YAW DAMPER DISENGAGED AUTOMATICALLY, YAW DAMPER LIGHT CAME ON AFTER TAKEOFF, THE YAW DAMPER LIGHT ILLUMINATED AND SPD LIM ON CA PFD SPEED TAPE. PERFORMED SMYD TEST, NR 1 HAD FAULT 27-31013. PERFORMED ADIRU BITE TEST, TESTED GOOD. SMYD TEST #2 TEST GOOD. SWA
- [SDR CALA2026110120691](https://openairdocs.org/sdr/CALA2026110120691.md): Battery Pack · inoperative · Oct 29, 2026 · N69835 · Boeing 737924ER · Emergency Lighting
  > EMERGENCY LIGHTS, BATTERY WILL NOT CHARGE. REMOVED, REPLACED, & OPS CHECKED GOOD M1672 BATTERY PACK IAW AMM 33-51-06.
- [SDR CALA2026110120693](https://openairdocs.org/sdr/CALA2026110120693.md): Battery Pack · inoperative · Oct 29, 2026 · N69835 · Boeing 737924ER · Emergency Lighting
  > EMERGENCY LIGHTS BATTERY WILL NOT CHARGE. REMOVED, REPLACED AND OPS CHECKED GOOD M1694 BATTERY PACK IAW AMM 33-51-06.
- [SDR CALA2026110120695](https://openairdocs.org/sdr/CALA2026110120695.md): Battery Pack · inoperative · Oct 29, 2026 · N69835 · Boeing 737924ER · Emergency Lighting
  > M1675 EMERGENCY LIGHT BATTERY WILL NOT CHARGE. REMOVED, REPLACED, AND OPS CHECKED GOOD M1675 BATTERY PACK IAW AMM 33-51-06.
- [SDR CALA2026110120697](https://openairdocs.org/sdr/CALA2026110120697.md): Battery Pack · inoperative · Oct 29, 2026 · N69835 · Boeing 737924ER · Emergency Lighting
  > M2816 EMERGENCY LIGHTS BATTERY WILL NOT CHARGE. REMOVED, REPLACED, AND OPS CHECKED GOOD M2816 BATTERY PACK IAW AMM 33-51-06.
- [SDR CALA2026103020655](https://openairdocs.org/sdr/CALA2026103020655.md): Battery Pack · inoperative · Oct 28, 2026 · N47414 · Boeing 737924ER · Emergency Lighting
  > DURING SERVICE CHK, FOUND L2 DOOR EMERGENCY SIGN TO NOT COME ON AS WELL AS AFT GALLEY OVERHEAD SIGN. DURING TROUBLESHOOTING, SWAPPED BATTERY PACKS OF M1672 AND M1673 IN THE AFT GALLEY. FAULT FOLLOWED CONFIRMING IT NEEDS THE BATTERY PACK REPLACED. SWAPPED
- [SDR CALA2026103020657](https://openairdocs.org/sdr/CALA2026103020657.md): Light · inoperative · Oct 28, 2026 · N87531 · Boeing 737824 · Emergency Lighting
  > RED EMERGENCY RED ISLE LIGHT OUT AT SEAT 20C. EMERGENCY LIGHT REPLACED IAW AMM 31-53-11.
- [SDR CALA2026102720614](https://openairdocs.org/sdr/CALA2026102720614.md): Check Valve · detached · Oct 27, 2026 · N75435 · Boeing 737924ER · Cabin Cooling System
  > LEFT AIR CONDITIONING HEAT EXCHANGER AND PLENUM-DIFFUSER BYPASS CHECK VALVE DOOR DEPARTED AIRCRAFT.
- [SDR CALA2026102820617](https://openairdocs.org/sdr/CALA2026102820617.md): Unknown · odor · Oct 27, 2026 · N62896 · Boeing 737924ER · Air Distribution System
  > BAD ODOR IN CABIN DURING THE DESCENT FROM AIR CONDITIONING COMPLIED WITH FIM 21-00 TASK 806. NO ODOR NOTED FROM FLIGHT CREW. CABIN CREW NOTICED THE ODOR FOR 5 TO 10 MINS ON APPROACH, 20 TO 30 MINS FROM LANDING. NO ODOR OF ELECTRICAL OR SMOKED REPORTED. INSP
- [SDR CALA2026103020653](https://openairdocs.org/sdr/CALA2026103020653.md): Battery Pack · inoperative · Oct 27, 2026 · N66841 · Boeing 737924ER · Emergency Lighting
  > FOUND TWO OVERHEAD EMERGENCY LIGHTS INOPERATIVE AT ROWS 9FED & 14FED. R & R THE EMERGENCY AISLE LIGHTS AT ROWS 9DEF AND 14DEF. NO HELP, LIGHTS INOPERATIVE. FOUND ALL LIGHTS ASSOCIATED WITH POWER SUPPLY M1676 INOPERATIVE, INCLUDING OVER WING EXIT LIGHT L120
- [SDR CALA2026102720591](https://openairdocs.org/sdr/CALA2026102720591.md): Light · loose · Oct 26, 2026 · N36444 · Boeing 737924ER · Emergency Lighting
  > EMERGENCY EXIT SIGN CEILING PANEL BY FWD LAV OUTSIDE FLIGHT DECK DOOR IS DROOPING ON THE RIGHT SIDE AND NEEDS TO BE RESECURED. SECURED CEILING PANEL JUST OUTSIDE LAV A.
- [SDR CALA2026102820621](https://openairdocs.org/sdr/CALA2026102820621.md): Light · faulty · Oct 26, 2026 · N37434 · Boeing 737924ER · Emergency Lighting
  > SEAT 36 CBA OVERHEAD EMERGENCY LIGHT INOPERATIVE. REMOVED AND REPLACED SEAT 36 CBA EAL ASSY. PER AMM 33-51-03-960-805.OPS CHECK GOOD.
- [SDR CALA2026102720592](https://openairdocs.org/sdr/CALA2026102720592.md): Cabin Pressure · lost · Oct 25, 2026 · N75435 · Boeing 737924ER · Cabin Pressure Control System
  > PASSING 14000FT LOST PRESSURIZATION ON DESCENT GOT TO 8000, OUTFLOW VALVE OPENED. C/W CABIN DEPRESSURIZATION CONDITIONAL INSPECTION IAW AMM 05-51-81-210-801, NO DEFECTS NOTED. PERFORMED PRESSURIZATION SYSTEM GROUND TEST IAW AMM 21-31-00-700-802 OPS CHECK GOOD
- [SDR CALA2026110120683](https://openairdocs.org/sdr/CALA2026110120683.md): Skin · dented · Oct 25, 2026 · N69835 · Boeing 737924ER · Cargo/Baggage Doors
  > FWD CARGO DOOR SKIN HAS MULTIPLE DENTS. REPAIRED FWD CARGO DOOR EXTERNAL SKIN BY REPLACING WITH NEW SKIN IAW SRM 52-30-01-2R-3 REPAIR 3 AND DWG 143A6110 REV-.
- [SDR CALA2026102620566](https://openairdocs.org/sdr/CALA2026102620566.md): Battery Pack · inoperative · Oct 23, 2026 · N75428 · Boeing 737924ER · Emergency Lighting
  > BOTH RIGHT SIDE OVERWING DOOR EMERGENCY EXIT LIGHTS INOP WHEN TESTED. LIGHTS BRIEFLY ILLUMINATE THEN EXTINGUISH WHEN TESTED. R & R MID RT. OVERWING DOORS EMERGENCY EXIT BATTERY PACK IAW AMM 33-51-06-960-805. OPS CHKD NORMAL.
- [SDR CALA2026102620569](https://openairdocs.org/sdr/CALA2026102620569.md): Pitot Tube · faulted · Oct 22, 2026 · N75436 · Boeing 737924ER · Pitot/Static Anti-Ice System
  > AUX PITOT LIGHT FOUND AUX PITOT HEATER C.B. D6 ON P18-3 PANEL TRIPPED. RESET C.B., NO HELP, AUX PITOT LIGHT STILL ILLUMINATED. RE-OPENED AUX PITOT C.B. ON P18-3 PNL. PITOT PROBE & GASKET ORDERED TO HANGAR WINDOW PIC OF ORDERED PARTS RMVD AND RPLD AUX PITOT PER
- [SDR CALA2026102620552](https://openairdocs.org/sdr/CALA2026102620552.md): Cabin Pressure · uncontrollable · Oct 21, 2026 · N79541 · Boeing 737824 · Cabin Pressure Control System
  > CREW REPORTS UNABLE TO CONTROL CABIN ALTITUDE. EMERGENCY DECLARED. CREW DESCENDED TO 10,000FT. NO OVERWEIGHT LANDING. FLIGHT CREW REPORTS BURNING ODOR DURING DESCENT. RAN LEFT AND RIGHT PACKS TO EVALUATE FOR SMOKE ODOR IN CABIN, NO SMOKE ODOR NOTED IN CABIN R
- [SDR CALA2026102220515](https://openairdocs.org/sdr/CALA2026102220515.md): Adiru · faulted · Oct 20, 2026 · N69813 · Boeing 737924ER · Integrated Flight System
  > IRS FAULT STARTED WITH IRS MOTION. REMOVED AND REPLACED AIR DATA IRU ASSY IAW AMM 34-21-01/401. OPS TESTED GOOD IAW AMM 34-21-00-710-80.
- [SDR CALA2026102120484](https://openairdocs.org/sdr/CALA2026102120484.md): Battery Pack · inoperative · Oct 18, 2026 · N77430 · Boeing 737924ER · Emergency Lighting
  > EMERGENCY LIGHTS DID NOT COME ON ROWS 22, 23, 24, 25 ABC. FOUND BATTERY PACK DEAD AT BS 500E, REPLACED THE BATTERY, SYSTEM CHKD GOOD.
- [SDR CALA2026102120483](https://openairdocs.org/sdr/CALA2026102120483.md): Fuse · blown · Oct 17, 2026 · N65832 · Boeing 737924ER · Emergency Lighting
  > EMERGENCY LIGHT INOPERATIVE BTWN SEATS 27ABC - 21ABC. FOUND EMERGENCY BATTERY PACK CHARGER FUSE BLOWN. REMOVED AND REPLACED FUSE IAW AMM 33-51-06-960-804. EMERGENCY LIGHTS AT 27ABC TO 21 ABC. OPS CHKD GOOD.
- [SDR CALA2026101620407](https://openairdocs.org/sdr/CALA2026101620407.md): Light · inoperative · Oct 15, 2026 · N37468 · Boeing 737924ER · Emergency Lighting
  > AISLE EMERGENCY LIGHTS 15C AND 20C INOPERATIVE. REPLACED THE EMERGENCY LIGHTS IAW AMM 33-51-00. OPS CHKD GOOD.
- [SDR CALA2026101320361](https://openairdocs.org/sdr/CALA2026101320361.md): Window · out of alignment · Oct 14, 2026 · N69816 · Boeing 737924ER · Flight Compartment Windows
  > CAPTAINS WINDOWS OPENED ON TAKEOFF. REJECTED TAKEOFF AT LOW SPEED. WILL NOT CLOSE NOW. REALIGNED WINDOW WITHIN FRAME REF AMM 56-12-11/401. WINDOW NOW SLIDES FREELY AND LATCHES SECURELY. GOOD FOR SERVICE.
- [SDR CALA2026101620409](https://openairdocs.org/sdr/CALA2026101620409.md): Unknown · odor · Oct 14, 2026 · N68834 · Boeing 737924ER · Air Distribution System
  > GATE RETURN FOR UNUSUAL ODOR. ODOR SLIGHTLY PRESENT WITH APU AND MUCH MORE PRONOUNCED WITH ENGINE 2. PERFORMED SMOKE/ODOR IN FLIGHT DECK/CABIN CONDITIONAL INSPECTION WITH APU AND ENGINES RUNNING IAW AMM 05-51-26-800-801-C1. NO ODORS NOTED.
- [SDR CALA2026101520367](https://openairdocs.org/sdr/CALA2026101520367.md): Battery Pack · inoperative · Oct 13, 2026 · N38458 · Boeing 737924ER · Emergency Lighting
  > EMERGENCY LIGHTS AT SEATS 8ABC TO 14ABC INOPERATIVE. TROUBLESHOT & DETERMINED THAT BATTERY PACK LOCATED BELOW SEAT 8ABC TO BE DEFECTIVE. REMOVED AND REPLACED BATTERY PACK. OPS CHECK GOOD. IAW AMM 33-51-00.
- [SDR CALA2026101520369](https://openairdocs.org/sdr/CALA2026101520369.md): Lens · broken · Oct 13, 2026 · N37419 · Boeing 737924ER · Emergency Lighting
  > EMERGENCY LIGHT LENS AT ROW 39 ABC SIDE IS BROKEN. REMOVED AND REPLACED IAW AMM 33-51-11.
- [SDR CALA2026101420363](https://openairdocs.org/sdr/CALA2026101420363.md): Warning Message · illuminated · Oct 10, 2026 · N62889 · Boeing 737924ER · Door Warning System
  > REJECTED TAKEOFF DUE TO MAIN CABIN DOOR MASTER CAUTION LIGHT. LESS THAN 100KTS PERFORMED FORWARD ENTRY DOOR CHECK IAW AMM 52-11-00-200-801.
- [SDR CALA2026100920241](https://openairdocs.org/sdr/CALA2026100920241.md): Battery · inoperative · Oct 8, 2026 · N62896 · Boeing 737924ER · Emergency Lighting
  > FOUND L1 EXTERIOR SLIDE LIGHT INOPERATIVE, DURING A SERVICE CHECK. R & R L1 EXTERIOR EMERGENCY SLIDE LAMP IAW AMM 33-51-04-960-801. FOUND EMER BATTERY NOT HOLDING A CHARGE. R & R THE FWD OVERHEAD EMERGENCY BATTERY IAW AMM 33-51-06-960-805. OP CHECKED GOOD.
- [SDR SWAA2026101280193](https://openairdocs.org/sdr/SWAA2026101280193.md): Engine · bird ingestion · Oct 8, 2026 · N284WN · Boeing 7377H4 · Engine (Turbine/Turboprop)
  > BIRDSTRIKE UNDER FO WINDOW, ENGINE PARAMETER NORMAL, STRONG ODOR IN CABIN. BIRD REMAINS IN RT ENGINE, REMOVED AND CLEANED BIRD REMAINS, PERFORMED BIRD STRIKE INSPECTION ON NR 2 ENGINE IAW AMM 71-00-00. RAN ENGINE NR 2 AND PACKS IAW AMM 71-00-00 FOR 15 MINS
- [SDR CALA2026101220265](https://openairdocs.org/sdr/CALA2026101220265.md): Light · broken · Oct 7, 2026 · N87531 · Boeing 737824 · Emergency Lighting
  > EMERGENCY EXIT LIGHT AT SEAT ROW 12 IS BROKEN. REPLACED LIGHT ASSY REF MM 33-51-11. OPS CHECK OK.
- [SDR CALA2026101320354](https://openairdocs.org/sdr/CALA2026101320354.md): Light · inoperative · Oct 7, 2026 · N69810 · Boeing 737924ER · Emergency Lighting
  > SIDEWALL EMERGENCY LIGHT INOP AT SEAT 20A. DOES NOT BLINK OR FLICKER. LIGHTING IS SUFFICIENT FOR CREW TO PERFORM DUTIES. C/W MEL 3302B. REMOVING THE OVERWING EXIT SIGN LIGHT ASSY. TASK 33-51-01-960-802 AND ALSO GET ACCESS TO THE LIGHT ASSY. INSTALLED ON TH
- [SDR CALA2026100720208](https://openairdocs.org/sdr/CALA2026100720208.md): Unknown · odor · Oct 5, 2026 · N78540 · Boeing 737824 · Air Distribution System
  > REPORT FAINT MUSTY SMELL WHEN CLIMBING FROM 6000 FEET THROUGH 13000 FEET. SMELL WENT AWAY AND CAME BACK DESCENDING THROUGH 13000 FEET AND WENT AWAY AGAIN THROUGH 10000 FEET. REPLACED RECIRCULATION FILTER, FOWARD PIT LEFT HAND SIDE. OPS CHECK NO SMELL.
- [SDR CALA2026100820232](https://openairdocs.org/sdr/CALA2026100820232.md): Controller · faulted · Oct 5, 2026 · N77538 · Boeing 737824 · Cabin Pressure Controller
  > CABIN PRESSURE DIFF IS ABOVE LIMITS, DESCENDED FROM FL 390 TO 350. REMOVED AND REPLACED CPC NR 2 IAW AMM 21-31-01, OPS CHKD GOOD. INSPECTED BOTH PACK BAYS FOR LEAKS, NONE NOTED. INSPECTED OUTFLOW VALVE AND OVER PRESSURE VALVES. NO DEFECTS NOTED.
- [SDR CALA2026100820233](https://openairdocs.org/sdr/CALA2026100820233.md): Unknown · odor · Oct 5, 2026 · N78540 · Boeing 737824 · Air Distribution System
  > SMOKE AND FUMES IN THE FLIGHT DECK ON TAKEOFF RTO AT 50 KTS. CREW INDICATED A HAZE WITH THE ODOR LIKE BURNED OIL. ACCOMPLISHED CONDITIONAL INSPECTION IAW AMM 05-51-26-800 -801-C. PERFORMED ENGINE RUN UP AT TAKEOFF POWER FOR 3 MINUTES IAW AMM 71-00-00-800-808
- [SDR SWAA2026100916385](https://openairdocs.org/sdr/SWAA2026100916385.md): Vta Actuator · leaking · Oct 5, 2026 · N8539V · Boeing 7378H4 · Fuel Controlling System
  > NR 1 ENGINE FUEL LEAK DURING ENGINE START. R & R RT VSV ACTUATOR ON NR 1 ENGINE IAW AMM 75-31-01. OPS AND LEAK CHECK GOOD.
- [SDR CALA2026100520099](https://openairdocs.org/sdr/CALA2026100520099.md): Adiru · faulty · Oct 3, 2026 · N27421 · Boeing 737924ER · Attitude and Direction Data System
  > IRS RT FAULT FOLLOWING FIM 34-21 TASK 803, PERFORMED BITE TEST AND FAULT MESSAGES ATTATCHED IN IMAGES. REMOVED AND REPLACED R ADIRU REF. AMM TASK 34-21-01-000-801 AND TASK 34-21-01-400-801. INSTALLATION TEST PASSED.PARTS USED: 60-3421-9-0001,QTY:1 POS - 2 MFG
- [SDR CALA2026100620142](https://openairdocs.org/sdr/CALA2026100620142.md): Apu · faulted · Oct 3, 2026 · N76514 · Boeing 737824 · APU Core Engine
  > SMOKE ODOR CONDITIONAL INSP REQUIRED PER AMM 05-51-XX DUE TO AN INCIDENT REPORTED BY THE CREW. SMOKE IN THE COCKPIT FOLLOWED BY APU SHUT DOWN, APU GEN FEEDER CABLES APU MAINT MSG 49-72104. FOUND APU GENERATOR FEEDER CABLE BURNT. FOUND FEEDER CABLES ON APU GEN
- [SDR CALA2026100620166](https://openairdocs.org/sdr/CALA2026100620166.md): Unknown · odor · Oct 3, 2026 · N69824 · Boeing 737924ER · Air Distribution System
  > HAD AN ABNORMAL ODOR COMING FROM THE AIR CONDITIONING AT LOW POWER SETTINGS. PERFORMED SMOKE/ODOR IN THE FLIGHT DECK/CABIN, CONDITIONAL INSPECTION UP TO AND INCLUDING STEP 1.C 2. (D) REF AMM 05-51-26-800-801-C1. NO DEFECT FOUND. OPS PACKS WITH APU BLEED AND
- [SDR CALA2026100720201](https://openairdocs.org/sdr/CALA2026100720201.md): Power Supply · faulted · Oct 3, 2026 · N77430 · Boeing 737924ER · Emergency Lighting
  > FIRST CLASS EMERGENCY LIGHTS INOP. REMOVED AND REPLACED FIRST CLASS EMERGENCY LIGHT POWER PACK, OPS CHECKED GOOD RED AMM 33-51-06-960-805
- [SDR CALA2026100720202](https://openairdocs.org/sdr/CALA2026100720202.md): Fuse · failed · Oct 3, 2026 · N68823 · Boeing 737924ER · Emergency Lighting
  > FIRST CLASS EMERGENCY PATH LIGHTING WILL NOT ILLUMINATE ON ALL FIRST CLASS SEATS FOUND 2ND FUSE FROM THE RIGHT ON BATTERY PACK M2816 TO READ OPEN. REMOVED AND REPLACED FUSE REFERENCING AMM 33-51-06. OPS CHECK GOOD AT THIS TIME.
- [SDR CALA2026100520121](https://openairdocs.org/sdr/CALA2026100520121.md): Lamp · inoperative · Oct 2, 2026 · N75433 · Boeing 737924ER · Emergency Lighting
  > LH FWD EXTERIOR OVERWING EMERGENCY LIGHT INOP REMOVED AND REPLACE LAMP IAW AMM 33-51-04-960-801. OPS CHECK GOOD
- [SDR CALA2026100620168](https://openairdocs.org/sdr/CALA2026100620168.md): Battery Pack · inoperative · Oct 2, 2026 · N61886 · Boeing 737924ER · Emergency Lighting
  > THE EMERGENCY LIGHTS ON ROWS 35-39 INOPERATIVE. REMOVED AND REPLACED LEFT AFT EMERGENCY BATTERY PACK BATTERY PER REF AMM 33-51-06-960-805. OPS CHECK SUCCESSFUL.
- [SDR CALA2026100520065](https://openairdocs.org/sdr/CALA2026100520065.md): Flashlight · not seated · Oct 1, 2026 · N87512 · Boeing 737824 · Emergency Equipment
  > BOTH FLASHLIGHTS INOPERATIVE AT R2 DOOR. FOUND BOTH AFT FLASHLIGHTS NOT SET CRADLE PROPERLY. REMOVED AND INSTALLED THE FLASHLIGHTS IN CRADLE AND OPS TESTED GOOD IAW AMM 25-64-00.
- [SDR CALA2026100720197](https://openairdocs.org/sdr/CALA2026100720197.md): Module · faulted · Oct 1, 2026 · N75435 · Boeing 737924ER · Fire Detection
  > REJECTED TAKEOFF AT 110KIAS DUE TO FIRE WARNING. PERFORMED ENG & APU FIRE DETECT CONTROL MODULE BITE IAW AMM 26-10-00-710-801. NO HELP, PERFORMD A HIGH POWER ENG RUN. CREW STATED THAT ALL SIX FIRE INDICATIONS WENT OFF ON TAXI OUT TRAVELING AT 110KIAS, APU W
- [SDR CALA2026092919966](https://openairdocs.org/sdr/CALA2026092919966.md): Frame · not reported · Sep 29, 2026 · N37413 · Boeing 737924ER · Standard Practices/Structures
  > REFERENCE 6541159. LOG CREATED FOR SDR TRACKING OF ECRA 5360-02033 - DUPLICATE OF SFR #1638
- [SDR CALA2026100620126](https://openairdocs.org/sdr/CALA2026100620126.md): Stringer · fom · Sep 29, 2026 · N39416 · Boeing 737924ER · Standard Practices/Structures
  > STRINGER S24L AT BS 847 NEEDS DISPLACED TO FOM. CUT STRINGER S24L BETWEEN STA 807-827 PER SRM 53-00-03-2R-1. FABRICATED REPAIR PARTS, ACCOMPLISHED STEPS 4D THROUGH 4J PER SRM 53-00-03-2R-1. VERIFIED FABRICATION OF REPAIR PARTS, ACCOMPLISHED STEPS 4D THROUGH 4
- [SDR CALA2026092919961](https://openairdocs.org/sdr/CALA2026092919961.md): Wire · broken · Sep 28, 2026 · N67846 · Boeing 737924ER · Light System Wiring
  > OPERATIONAL CHECK OF EMERGENCY LIGHTS, L1 DOOR, COAT STORAGE EMERGENCY LIGHT INOPERATIVE. FOUND A WIRE BROKEN AT CONNECTOR. DISCONNETED CONNECTOR D004J/D004P TO FOM IAW CMM 25-20-23, REQUESTING DEFERRAL OF FLOOR PROX EMERGENCY PATH LIGHT. MEL 3319E REJECT

Next page: https://openairdocs.org/engine/cfm-international-cfm56-7b27-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 = 'CFM567B27'
ORDER BY difficulty_date DESC
```

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

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