# Service difficulty reports: N937AK

A list on [N937AK](https://openairdocs.org/aircraft/N937AK.md).

Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first.

- [SDR ASAA2026021064313](https://openairdocs.org/sdr/ASAA2026021064313.md): Battery Pack · no test · Feb 10, 2026 · N937AK · Boeing 7379 · Emergency Lighting
  > L2 DOOR EMERGENCY LIGHT FAILED CAPACITY TEST. SRXR430X. GROUNDED - YES. REMOVED AND INSTALLED NEW BATTERY PACK (M1672) IAW AMM 33-51-06-960-802 TEST OK PN(ON/OFF) ADD717-01-100SRXR430X.
- [SDR ASAA2025032957124](https://openairdocs.org/sdr/ASAA2025032957124.md): Tire · damaged · Mar 29, 2025 · N937AK · Boeing 7379 · Tire
  > #1 O/B TIRE DAMAGED BEYOND LIMITS. EVERBRIDGE: DURING LANDING ROLL, THE #1 MLG TIRE TREAD SEPARATED FROM THE TIRE ASSEMBLY WHICH RESULTED IN OUT-OF-LIMIT DAMAGE TO THE WING ACCESS PANEL, AND DENTS TO LOWER WING AND FLAP SURFACES. ALL 4 TIRES REMAINED INFLATED
- [SDR ASAA2024072451319](https://openairdocs.org/sdr/ASAA2024072451319.md): Light · detached · Jul 24, 2024 · N937AK · Boeing 7379 · Emergency Lighting
  > FA STATES THE EMERGENCY LIGHTING STRIP ON THE FLOOR NEAR ROW 12 CAME OFF. GROUNDED - YES. SECURED LOOSE FLOOR TRACK STRIP REF AMM 33-51-15.
- [SDR ASAA2023101945746](https://openairdocs.org/sdr/ASAA2023101945746.md): Separator · damaged · Oct 19, 2023 · N937AK · Boeing 7379 · Engine Oil Distribution (Airframe Furnished)
  > #2 ENGINE AIR OIL SEPERATOR NEED REPLACEMENT. GROUNDED - YES. REMOVE AND REPLACED AIR OIL SEPERATOR PER 79-21-21. OPS CHECK GOOD. V.AMINI 62596 REPLACED #2 ENGINE AIR OIL SEPERATOR REF AMM 79-21-21 LEAK CHECK GOOD.
- [SDR ASAA2023101745724](https://openairdocs.org/sdr/ASAA2023101745724.md): Unknown · unknown · Oct 17, 2023 · N937AK · Boeing 7379 · Flight Management Computing Hardware System
  > AT ABOUT 1:18Z FL 360 AP B TURNED OFF & FO INBD SCREEN WENT MOMENTARILY BLANK. ALL CAME BACK ON AFTER ABOUT 1 MIN. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023083044855](https://openairdocs.org/sdr/ASAA2023083044855.md): Unknown · unknown · Aug 30, 2023 · N937AK · Boeing 7379 · APU Bleed Air System
  > APU CONTINOUSLY BLOWS AIR AT 33C REGARDLESS OFF TEMP SETTING. GROUNDED - YES. MAINTENANCE PROCEDURES REVERSED. TROUBLESHOT PER FIM 49-52-00-810-812. BOTH DP AND PT SENSORS AND LINES CLEAR OF DEBRIS. OPERATED APU BLEED AIR PER AMM 21-00-00, BOTH PACKS SHOW CONS
- [SDR ASAA2023083044845](https://openairdocs.org/sdr/ASAA2023083044845.md): Unknown · unknown · Aug 30, 2023 · N937AK · Boeing 7379 · Cabin Cooling System
  > AFTER AIR START BLEED AIR INSUFFICIENT TO OPERATE PACKS ONORDER TO COOL AIRCRAFT. GROUNDED - YES. STARTED BOTH ENGINES AND MONITORED AIR SUPPLY &COOLING TEMPTO AND FROM PACKS AIR FLOW SUFFICIENT IAW AMM 71-00-00-700-800-G00 COOOLING TEMP SUFFIENT IAW AMM 21-51
- [SDR ASAA2023080744464](https://openairdocs.org/sdr/ASAA2023080744464.md): Unknown · unknown · Aug 7, 2023 · N937AK · Boeing 7379 · Pneumatic Distribution System
  > MAINT LIGHT LANDING ROLL OUT. GROUNDED - YES. PERFORMED IFIM TASK 36-12-00-810-801, BLEED FAMVL FAUL ON OMFS. FLIGHT CREW PERFORMED ENGINE ON PNEUMATIC SYSTEM TEST ASSOCIATED MX MESSAGE CLEARED. OPS CHECK GOOD. MAINT LIGHT EXTINGUISHED. NO FURTHER DEFECTS NOTE
- [SDR ASAA2023080644463](https://openairdocs.org/sdr/ASAA2023080644463.md): Modulating Valve · faulty · Aug 6, 2023 · N937AK · Boeing 7379 · Pneumatic Distribution System
  > TECH SERVICES REQUEST FOR FOLLOW-UP TO MTX LIGHT & FAULT (#1 LEFT FAMV FAULT 36-12020 #1(LH) FAMV IS NOT IN COMMANDED POSITION)----(#PRI1)----ETOPS SIGNIFICANT SYSTEM----. GROUNDED - YES. (RESOLVED ON W/O: 1964234 TASKCARD: N/R-00001) REMOVE AND REPLACED FAN
- [SDR ASAA2023072544431](https://openairdocs.org/sdr/ASAA2023072544431.md): Fuel Nozzle · coked · Jul 25, 2023 · N937AK · Boeing 7379 · Engine Fuel Distribution
  > GE DIAGNOSTICS REPORTS #1 ENGINE (SN 60A323) TREND DATA SHOWS EXCESS COKING OF THE FUEL NOZZLE MAIN ORIFICES. -----#PRI3/ETOPS----- (FULL SET FUEL NOZZLE REPLACEMENT 737MAX T/C 73-ASA-02)NO EXTENSION ALLOWED (150 CYCLES).CNR 20230725055. GROUNDED - YES. (RESOL
- [SDR ASAA2023070943969](https://openairdocs.org/sdr/ASAA2023070943969.md): Start Valve · faulty · Jul 9, 2023 · N937AK · Boeing 7379 · Engine Start Valves/Controls
  > AFTER START THE NO. 1 START VALVE OPEN LIGHT REMAINED ILLUMINATED ACCOMPANIED BY THE BLINKING ENG LIGHTS FOR 5-8 SECONDS. THIS CYCLE THEN REPEATED 5 OR 6 TIMES. SUBSEQUENTLY ALL THE LIGHTS EXTINGUISED AND ALL OTHER IDICATIONS REMAINED NORMAL. GROUNDED - YES. D
- [SDR ASAA2023062643765](https://openairdocs.org/sdr/ASAA2023062643765.md): Unknown · unknown · Jun 26, 2023 · N937AK · Boeing 7379 · Engine Cranking
  > AFTER NUMBER 1 ENGINE WAS STARTED, THE START VALVE OPEN LIGHT STAYED ILLUMINATED. GROUNDED - YES. ENGINE RUN PERFORMED BY THE FLIGHT CREW IAW AMM 71-00-00-910-803-G00. ENGINE #1 STARTS NORMAL ALL PARS GOOD ENG 1 VALVE ILLUMINATED AND EXTINGUISHED AND STAYED EX
- [SDR ASAA2023042843057](https://openairdocs.org/sdr/ASAA2023042843057.md): Exciter · failed · Apr 28, 2023 · N937AK · Boeing 7379 · Ignition Power Supply
  > #1 ENGINE WOULD NOT LIGHT OFF AFTER START LEVER RAISED TO IDLE. GROUNDED - YES. REMOVED AND REPLACED RIGHT IGNITION EXCITER PER B737-9 AMM 74-11-01.
- [SDR ASAA2023042743055](https://openairdocs.org/sdr/ASAA2023042743055.md): Start Valve · faulty · Apr 27, 2023 · N937AK · Boeing 7379 · Engine Cranking
  > NO IGNITION ON #1 ENG. "ENG VALVE CLOSED" LIGHT EXTINGUISHED AND THEN ILLUMINATED AFTER THE START LEVER WAS RAISED TO IDLE. ABORTED START PER QRH. GROUNDED - YES. REMOVED AND REPLACED #1 ENG STARTER AIR VALVE. NO LEAKS NOTED OPS CHECK GOOD. REF B737-9 AMM 80-1
- [SDR ASAA2023033042650](https://openairdocs.org/sdr/ASAA2023033042650.md): Valve · damaged · Mar 30, 2023 · N937AK · Boeing 7379 · Pneumatic Distribution System
  > WHILE #2 ENG RUN FOUND, FOUND HP LOCKOUT BOLT DAMAGE. GROUNDED - YES. REMOVED AND REPLACED #2 HPSOV IAW B737-9 AMM 36-11-07 AND PERFORMED PNEUMATIC LEAK TEST IAW AMM 36-11-07 NO LEAK NOTED.
- [SDR ASAA2023031642381](https://openairdocs.org/sdr/ASAA2023031642381.md): Unknown · unknown · Mar 16, 2023 · N937AK · Boeing 7379 · Alternator-Generator Drive
  > ON PREFIGHT THE #2 IDG CONTROL CB POPPED. GROUNDED - YES. PERFORMED C/B RESET REF B737-9 AMM 20-60-01 C/B DID NOT REOPEN.
- [SDR ASAA2023031542457](https://openairdocs.org/sdr/ASAA2023031542457.md): Unknown · faulty · Mar 15, 2023 · N937AK · Boeing 7379 · Alternator-Generator Drive
  > #2 IDG "DRIVE" LIGHT EXTINGUISHED WITH ENGINE STOPPED, WORKS ON LIGHT TEST NORMALLY. GROUNDED - YES. REMOVED AND REPLACED #2 ENGINE IDG REF B737-9 AMM 24-11-11-400-801.
- [SDR ASAA2023030442173](https://openairdocs.org/sdr/ASAA2023030442173.md): Unknown · unknown · Mar 4, 2023 · N937AK · Boeing 7379 · HF Communications System
  > ON FMC 1 MENU PAGE, NO SAT DISPLAYED. PERFORMED SAT LOCKUP QRH AND PROBLEM REMAINS. FMC 2 MENU DISPLAYS SAT BOTH BEFORE AND AFTER SAT LOCKUP QRH WAS PERFORMED. GROUNDED - YES. C/B RESET FOR # 1 FMCS COMPT AND # 1 CDU P18-1 PNL REF B737-9 AMM 20-60-05 SAT PROMP
- [SDR ASAA2023010301336](https://openairdocs.org/sdr/ASAA2023010301336.md): Anti-Ice Valve · failed · Dec 30, 2022 · N937AK · Boeing 7379 · Airfoil Anti/De-ice System
  > L VALVE WING ANTI-ICE AMBER STAYED ON WHEN TURNED ON VALVE STUCK CLOSED. L VALVE LIGHT WENT OUT WHEN SWITCH TURNED OFF. GROUNDED - YES. REMOVED AND REPLACED LH WING ANTI-ICE VALVE REF B737-9 AMM 30-11-11. (REF TSR713612 ON W/O 1936784)
- [SDR ASAA2023010321338](https://openairdocs.org/sdr/ASAA2023010321338.md): Warning Light · false activation · Dec 29, 2022 · N937AK · Boeing 7379 · Airfoil Anti/De-ice System
  > WING ANTI - ICE (L) VALVE STAYED ILLIUMINATED AFTER TURNING WING ANTI - ICE ON. CYCLED SWITCH AND VALVE REMAINED CLOSED AFTER SECOND ATTEMPT. ADDED POWER AS WELL AND L VALVE LIGHT REMAINED ILLUMINATED WITH WING ANTI - ICE SWITCH ON. GROUNDED - YES. C/W WING TA
- [SDR ASAA2022112940966](https://openairdocs.org/sdr/ASAA2022112940966.md): Display · malfunctioned · Nov 29, 2022 · N937AK · Boeing 7379 · Flight Management Computing Hardware System
  > IN CRUISE BOTH INBOARD CDU'S BLANKED W/ VTK ON THE CA SIDE. MCDU/CDU BOTH BLANKED WITH MENU PAGE DISPLAY ALL ITEMS (ACARS, ACMS, SAT, HGS) BUT NO FMC. NO MESSAGE DISPLAYED IN SCRATCH PAD. FMC RETURNED TO NORMAL IN 30-45 SECONDS. GROUNDED - YES. RESET BOTH FMC'
- [SDR ASAA2022103040520](https://openairdocs.org/sdr/ASAA2022103040520.md): Warning Light · false activation · Oct 30, 2022 · N937AK · Boeing 7379 · Autopilot System
  > SPEED TRIM FAIL LIGHT ON AFTER SHUTDOWN. GROUNDED - YES. DFCS BITE SHOWS NO SPEED TRIM FAULTS ON PREVIOUS FLT LEGS CH A OR CH B. FAULT LIGHT ON GROUND ONLY. PERFORMED DFCS TEST 60.32 "SPEED/STAB TRIM" REF B737-9 IFIM 22-11-00-810-D73 TEST PASS. NO FAULTS.
- [SDR ASAA2022102840658](https://openairdocs.org/sdr/ASAA2022102840658.md): Sensor · faulted · Oct 28, 2022 · N937AK · Boeing 7379 · Engine Indicating System
  > #1 ENGINE HAS SHORT TIME ENG 1 EEC C1 FAULT 73-43871, ENGINE FAN INLET (T12) TEMPERATURE SENSOR AND ADIRU AIR TEMPERATURE SIGNALS DO NOT AGREE. GROUNDED - YES. REMOVED AND REPLACED #1 ENG T12 SENSOR REF B737-9 AMM 73-21-06-000/400-801-G00.
- [SDR ASAA2022101940426](https://openairdocs.org/sdr/ASAA2022101940426.md): Eec · faulted · Oct 19, 2022 · N937AK · Boeing 7379 · Fuel Controlling System
  > EEC ENG 1 SHORT TIME FAULT "T12 SENSOR & ADIRU AIR TEMPERATURE SIGNALS DO NOT AGREE" FOUND WHILE PERFORMING TC 05-020-01. GROUNDED - YES. ACCOMPLISHED B737-9 IFIM G73-20-00-810-833. INITIAL EVAL ACCOMPLISHED AND FAULT NOT ACTIVE. INTERMITTENT FAULT. GROUND VE
- [SDR ASAA2022101940425](https://openairdocs.org/sdr/ASAA2022101940425.md): Sensor · faulted · Oct 19, 2022 · N937AK · Boeing 7379 · Fuel Controlling System
  > ENG1 EEC C2 LONG-TIME FAULTS "T12 SENSOR OUT OF RANGE" & "T12 SENSOR CHANNELS A&B DISAGREE" FOUND WHILE PERFORMING TC 05-020-01. GROUNDED - YES. REMOVED AND REPLACED #1 ENG T12 SENSOR. FAULTS ARE NOW INACTIVE EEC TEST PASS IAW AMM 73-21-06-000/400-801-G00.
- [SDR ASAA2022080539400](https://openairdocs.org/sdr/ASAA2022080539400.md): Circuit Breaker · not seated · Aug 5, 2022 · N937AK · Boeing 7379 · Flight Management Computing Hardware System
  > AFTER POWER INTERRUPTION DURING PREFLIGHT "FMC DISAGREE" MSG ON INBOARD DISPLAY. GROUNDED - YES. RMVD & RESET POWER TO BOTH FMCS BY PULLING/RESETTING 4EA FMC C/B'S. L & R FMC OPS NML REF B737-9 AMM 34-61-00. FMC DISAGREE MSGS EXTINGUISHED IN CAPT & F/O DISPLAY
- [SDR ASAA2022070839030](https://openairdocs.org/sdr/ASAA2022070839030.md): Radio · inoperative · Jul 8, 2022 · N937AK · Boeing 7379 · HF Communications System
  > HF 2 RADIO INOP. GROUNDED - YES. ADJUSTED HF 2 SENS. OPS CHECKS GOOD REF B737-9 AMM 23-11-00. INFLIGHT OPS TEST ON BOTH HF RADIOS
- [SDR ASAA2022070838985](https://openairdocs.org/sdr/ASAA2022070838985.md): Hf Comm · failed · Jul 8, 2022 · N937AK · Boeing 7379 · HF Communications System
  > HF 1 UNABLE TO ESTABLISH COMMUNICATIONS. GROUNDED - YES. OPS CHECKS GOOD REF B737-9 AMM 23-11-00. INFLIGHT OPS TEST ON BOTH HF RADIOS GOOD.
- [SDR ASAA2022061638673](https://openairdocs.org/sdr/ASAA2022061638673.md): Software · out of date · Jun 16, 2022 · N937AK · Boeing 7379 · Flight Management Computing Hardware System
  > NAV DATA OUT OF DATE. GROUNDED - YES. ACCOMPLISHED NAV DATA UPDATE IAW ASA T/C#34-ATA-05.

## 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 n_number = 'N937AK' AND registry_match = 'registration'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/aircraft/N937AK/reports

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