# Service difficulty reports: N956AK

A list on [N956AK](https://openairdocs.org/aircraft/N956AK.md).

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

- [SDR ASAA2025080159827](https://openairdocs.org/sdr/ASAA2025080159827.md): Glowstrip · missing · Aug 1, 2025 · N956AK · Boeing 7379 · Emergency Equipment
  > FIRST SECTION OF PHOTOLUMINESCENT FLOOR PATH MARKING MISSING ON RIGHT SIDE. GROUNDED - YES. REPLACED MISSING SECTION OF PHOTLUMINESCENT FLOOR MARKING REF AMM 33-51-15.
- [SDR ASAA2025050257739](https://openairdocs.org/sdr/ASAA2025050257739.md): Light · detached · May 2, 2025 · N956AK · Boeing 7379 · Emergency Lighting
  > EMERGENCY EXIT CEILING LIGHT FIXTURE NEAR EXIT ROW IS LOOSE AND HANGING BY ITS WIRE. GROUNDED - YES. REINSTALLED EMEGY EXIT SIGN AT ROW 16 OPS GOOD PER AMM 33-51-01 SEAMC DOUG NOTIFIED.
- [SDR ASAA2023102445820](https://openairdocs.org/sdr/ASAA2023102445820.md): Modulating Valve · faulty · Oct 24, 2023 · N956AK · Boeing 7379 · Pneumatic Distribution System
  > WHILE T/S #1 ENG IGNITION FOUND ACTIVE/LATCHED FAULT ON ENG.#1 FAMV RVDT SIGNAL IS OUT OF RANGE MSG # 36-12030 CORRELATED TO FDE BLEED FAMV L SMT FAULT CODE 36145241. GROUNDED - YES. (RESOLVED ON W/O: 1974849 TASKCARD: N/R-00001) REMOVED AND REPLACED FAN AIR
- [SDR ASAA2023102145769](https://openairdocs.org/sdr/ASAA2023102145769.md): Exciter · faulty · Oct 21, 2023 · N956AK · Boeing 7379 · Exciter
  > #1 ENG. WILL NOT START WITH IGN. R/H STARTS NORMAL WITH IGN. L/H. GROUNDED - YES. (RESOLVED ON W/O: 1974578 TASKCARD: N/R-00001) FOUND FAULT HISTORY FOR #1 ENG RIGHT IGNITION SYSTEM IS FAILED MAINT MSG 74-42541. REF IFIM G74-00-00-810-839. OPENED ENG #1 COWLS
- [SDR ASAA2023102145784](https://openairdocs.org/sdr/ASAA2023102145784.md): Unknown · unknown · Oct 21, 2023 · N956AK · Boeing 7379 · Pneumatic Distribution System
  > WHILE PERFORMING TC 31-005-00, FAULT "FAMV RVDT SIGNAL IS OUT OF RANGE" MTX MSG 36-12030 DISCOVERED. GROUNDED - YES. PERFORMED B737-9 IFIM TASK 36-12-00-810-803. FAULT FOUND TO BE INTERMITTENT. NO FURTHER DEFECTS NOTED.
- [SDR ASAA2023101145585](https://openairdocs.org/sdr/ASAA2023101145585.md): Unknown · unknown · Oct 11, 2023 · N956AK · Boeing 7379 · Windshield/Door Rain/Ice Removal
  > RIGHT SIDE WINDOW HEAT OVERHEAT LIGHT ILLUMINATED ON LANDING ROLL. GROUNDED - YES. LIGHT EXTINGUISHED PER PILOT QRH.
- [SDR ASAA2023093045647](https://openairdocs.org/sdr/ASAA2023093045647.md): Filter · faulted · Sep 30, 2023 · N956AK · Boeing 7379 · Engine Bleed Air System
  > TECH SERVICE REQUEST. FOLLOW UP ON ENGINE-1 FAMV RVDT SIGNAL IS OUT OF RANGE DETECTED BY: INTEGRATED AIR SYSTEMS CONTROLLER (IASC)-LEFT CODE 36-12030.(#PRI 2) ETOPSNOTE TO PREVENT DELAYS PERFORM BELOW TASK SEE LG# 60712530. GROUNDED - YES. (RESOLVED ON W/O: 19
- [SDR ASAA2023092545302](https://openairdocs.org/sdr/ASAA2023092545302.md): Unknown · unknown · Sep 25, 2023 · N956AK · Boeing 7379 · Pneumatic Distribution System
  > WHILE PERF TC # 31-005-00 FOUND #1 ENG FAMV LEFT SIGNAL OUT OF RANGE MX MSG 36-12030. GROUNDED - YES. PERF LRU TEST FOR MX MSG 36-12030 IAW B737-9 AMM 36-00-00-710-801, REQ TEST PASSED, LATCHED FAULT REMOVED.
- [SDR ASAA2023091145082](https://openairdocs.org/sdr/ASAA2023091145082.md): Unknown · unknown · Sep 11, 2023 · N956AK · Boeing 7379 · APU Start/Ignition System
  > APU FAULT LIGHT ILLUMINATED ON FIRST START ATTEMPT. GROUNDED - YES. ACCOMPLISHED IFIM 49-40-00-810-805. NO FAULTS FOUND OR ACTIVE. APU STARTED NORMAL PER IFIM INTERMITTENT FAULT REMOVED MEL 49-11-01 SEAMC LANCE CONTACTED REF LOG PAGE 60547740 FOR 49-99A.
- [SDR ASAA2023091045058](https://openairdocs.org/sdr/ASAA2023091045058.md): Unknown · unknown · Sep 10, 2023 · N956AK · Boeing 7379 · Pneumatic Distribution System
  > ON T/C 31-005-00 FOUND FAULT CODE 36-12030 BLEED FAMV RVDT L. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023090945031](https://openairdocs.org/sdr/ASAA2023090945031.md): Unknown · unknown · Sep 9, 2023 · N956AK · Boeing 7379 · Communications System
  > WE SUCCESSFULLY LOGGED ON TO CPDLC ON THE GROUND IN PDX. AUTOMATIC TRANSFER FROM KUSA TO KZAK WAS SUCCESSFUL. RECEIVED AUTOMATED MESSAGE TO CONFIRM CPDLC LINK. USED ACARS TO OBTAIN WEATHER AND LANDING DATA BUT DIDN'T RECEIVE ANY INFO. ACARS DISPLAYED CONTINUAL
- [SDR ASAA2023082644797](https://openairdocs.org/sdr/ASAA2023082644797.md): Unknown · unknown · Aug 26, 2023 · N956AK · Boeing 7379 · Spark Plug/Igniter
  > MAINT LIGHT ILLUMINATED ON GROUND. GROUNDED - YES. FOUND MAINT LIGHT ILLUMINATED, DUE TO LEFT AND RIGHT ENG #1 IGNITER FAULT, PERFORMED B737-9 IFIM TASK G74-00-00-810-801NO FAULT, AT THIS TIME.
- [SDR ASAA2023081544632](https://openairdocs.org/sdr/ASAA2023081544632.md): Unknown · unknown · Aug 15, 2023 · N956AK · Boeing 7379 · Aircraft Fuel System
  > FUEL LEAK OUT OF RIGHT WING VENT. GROUNDED - YES. TRANSFERED FUEL FROM #2 MAIN TANK VERIFIED SURGE TANK EMPTY IRT AMM 28-26-00 VERIFIED #2 TANK FUEL SHUT-OFF VALVE OPERATES CORRECTLY IRT AMM 28-21-00. SEAMC PHIL NOTIFIED.
- [SDR ASAA2023081444618](https://openairdocs.org/sdr/ASAA2023081444618.md): Electronic Unit · faulty · Aug 14, 2023 · N956AK · Boeing 7379 · Leading Edge Slat Control System
  > IN CRUISE FL350,.78 MACH, APPROX 265 IAS, LE FLAPS TRANSIT ILLUMINATED. #8 LE SLAT INDICATOR SHOWED FULL EXTEND AND SLAT APPEARED EXTENDED. BOTH LIGHTS WENT OUT AND CAME ON INTERMITTENTLY DURING THE FLIGHT NO ADVERSE FLIGHT CHARACTERISTICS WERE NOTED. GROUNDE
- [SDR ASAA2023072444213](https://openairdocs.org/sdr/ASAA2023072444213.md): Unknown · unknown · Jul 24, 2023 · N956AK · Boeing 7379 · Flight Management Computing Hardware System
  > FMC DISAGREE. GROUNDED - YES. PERFORMED GOOD OPERATIONAL TEST OF FMC REF AMM 34-61-00-710-801.
- [SDR ASAA2023071243985](https://openairdocs.org/sdr/ASAA2023071243985.md): Unknown · unknown · Jul 12, 2023 · N956AK · Boeing 7379 · Cabin Cooling System
  > ON ROLL OUT OVERHEAD MAINT LIGHT CAME ON. GROUNDED - YES. FOUND STATUS MESSAGE 21-55011 - "RIGHT AIR CONDITIONING PACK EXIT DOOR ACTUATOR HAS SIGNAL ERROR." RESET CIRCUIT BREAKER C1951 PER FIM 21-51-00. PERFORMED AIR CONDITIONING SYS TEST IBIT RIGHT REF AMM 21
- [SDR ASAA2023062943813](https://openairdocs.org/sdr/ASAA2023062943813.md): Unknown · unknown · Jun 29, 2023 · N956AK · Boeing 7379 · Fuel Controlling System
  > WHILE PERFORMING T/C 31-005-00 FOUND SMT SHORT TIME FAULT ENG 2EEC C1. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023062943812](https://openairdocs.org/sdr/ASAA2023062943812.md): Unknown · unknown · Jun 29, 2023 · N956AK · Boeing 7379 · Fuel Controlling System
  > WHILE ACCOMPLISHING T/C 05-020-01 DISCOVERED (SMT) MESSAGE ENG 2 EEC C2. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023062743778](https://openairdocs.org/sdr/ASAA2023062743778.md): Unknown · unknown · Jun 27, 2023 · N956AK · Boeing 7379 · Fuel Controlling System
  > WHILE ACCOMPLISHING T/C 05-020-01 FOUND NOT ACTIVE FAULT 71-43692 ENG STALLED DURING START ON ENG 1. GROUNDED - YES. FOLLOWING IFIM TASK G-71-00-00-810-870 NO CREW REPORTS AND ENG EGT START LIMIT WAS NOT EXCEEDED. VERIFIED WITH TECH SERVICES THAT EGT LIMIT WAS
- [SDR ASAA2023062243670](https://openairdocs.org/sdr/ASAA2023062243670.md): Unknown · unknown · Jun 22, 2023 · N956AK · Boeing 7379 · Autopilot System
  > SPEED TRIM FAIL ILLUMINATED DURING DESCENT WITH MASTER CAUTION RECALL. EXTINGUISHED WHEN MASTER CAUTION WAS RESET. GROUNDED - YES. ACCOMPLISHED IFIN, TASK 22-11-00: DFCS BITE CHECK PER AMM 22-11-00, BOTH CHANNELS A&B PASSED TEST. SPEED TRIM FAIL LIGHT REMAINS
- [SDR ASAA2023060743502](https://openairdocs.org/sdr/ASAA2023060743502.md): Modulating Valve · out of range · Jun 7, 2023 · N956AK · Boeing 7379 · Pneumatic System
  > WHILE ACCOMPLISHING ASA T/C 31-005-00 FOUND SMT MESSAGE BLEED FAMV RVDT L SIGNAL IS OUT OF RANGE MAINTENANCE MESSAGE 36-12030. GROUNDED - YES. ACCOMPLISHED B737-9 IFIM TASK 36-12-00-810-803, ELECTRICAL LRU - REPLACEMENT TEST WHICH PASSED. DUE TO HISTORY AND MU
- [SDR ASAA2023060543476](https://openairdocs.org/sdr/ASAA2023060543476.md): Unknown · unknown · Jun 5, 2023 · N956AK · Boeing 7379 · Windshield/Door Rain/Ice Removal
  > ON DESCENT, L FWD WINDOW HEAT OVERHEAT LIGHT CAME ON. AFTER 5 MIN COOL DOWN, OVERHEAT LIGHT CAME BACK ON WHEN WINDOW HEAT WAS TURNED BACK ON. GROUNDED - YES. PERFORMED BITE TEST B737-9 AMM 30-41-710-801 FOR WINDOW HEAT CONTROL UNIT. TEST PASSED. NO FAULTS NOTE
- [SDR ASAA2023052643377](https://openairdocs.org/sdr/ASAA2023052643377.md): Unknown · unknown · May 26, 2023 · N956AK · Boeing 7379 · Independent Position Determining System
  > WX RADAR DEPICTS A RETURN FROM THE NOSE TO END OF RANGE THAT IS CONSISTENTLY POINTED 20* DEGREES LEFT OF NOSE. GROUNDED - YES. PERFORMED SYSTEM RESET OF THE WXR SYSTEM PERFORMED WEATHER RADAR OPERATIONAL TEST IAW B737-9 AMM 34-41-00. OPS CK GOOD. ALL INDICATIO
- [SDR ASAA2023052543407](https://openairdocs.org/sdr/ASAA2023052543407.md): Unknown · unknown · May 25, 2023 · N956AK · Boeing 7379 · Pneumatic System
  > WHILE PERFORMING ASA T.C. #31-005-00, SMT HAS LATCHED MTX MSG BLEED FAMV RVDT L. GROUNDED - YES. PERFORMED B737-9 FIM TASK 36-12-00-810-803 FOR MTX MSG BLEED FAMV RVDT L. MESSAGE WAS FOUND TO BE AN INTERMITTENT FAULT.
- [SDR ASAA2023051843263](https://openairdocs.org/sdr/ASAA2023051843263.md): Unknown · unknown · May 18, 2023 · N956AK · Boeing 7379 · Flight Management Computing Hardware System
  > SINGLE FMC AND FO MAP FLAG ON NAV DISPLAY. GROUNDED - YES. VERIFIED - NO CURRENT FAULTS ON EITHER FMC, NO FAULTS ON STATUS PAGE OF OMF. CYCLED OVERHEAD FMC SW FROM NML POSITION TO BOTH ON LEFT/RIGHT BACK TO NORMAL - ALL FMC FLAGS GONE. ALL INDICATIONS NML. NO
- [SDR ASAA2023051143218](https://openairdocs.org/sdr/ASAA2023051143218.md): Unknown · unknown · May 11, 2023 · N956AK · Boeing 7379 · Flight Management Computing Hardware System
  > FMC DISAGREE THEN DISAPPEARED. GROUNDED - YES. PERFORMED GOOD OPS TEST OF FMC REF B737-9 AMM 34-61-00-710-801.
- [SDR ASAA2023050443156](https://openairdocs.org/sdr/ASAA2023050443156.md): Unknown · unknown · May 4, 2023 · N956AK · Boeing 7379 · APU Start/Ignition System
  > APU FAULT ON TAXI IN. APU WOULD NOT START. GROUNDED - YES. FOUND FAULT 49130100 WITH ASSOCIATED MAINT MSG 49-41012 AND WAS NOT ACTIVE. STARTED B737-9 IFIM 49-40-00-810-805 INITIAL EVAL AND NO ACTIVE FAULT. HOWEVER WHEN STARTING THE APU FAULT LT APPEARED WITH F
- [SDR ASAA2023041442902](https://openairdocs.org/sdr/ASAA2023041442902.md): Panel · faulty · Apr 14, 2023 · N956AK · Boeing 7379 · AC Generation System
  > ON TAKE-OFF ROLL ELEC 2 HYDRAULIC LOW PRESSURE LIGHT ILLUMINATED. GROUNDED - YES. FOUND C/B C881 (F3) IN P92 PANEL OUT. INSPECTED HYD PUMP D02664 + NO DEFECTS FOUND RESET C/B REF B737-9 AMM 20-60-01. C/B POPPED WIEN "A" SYS ELEC 2 SWITCH TURNED ON. C/B DOES NO
- [SDR ASAA2023041242815](https://openairdocs.org/sdr/ASAA2023041242815.md): Unknown · unknown · Apr 12, 2023 · N956AK · Boeing 7379 · Autopilot System
  > SPEED TRIM FAIL LIGHT ON RECALL. EXTINGUISHES WITH CAUTION RESET. GROUNDED - YES. DFCS CHANNEL B LOGGED 22-11186 MAINT MESSAGE, ONLY FAULT. PERFORMED B737-9 IFIM 22-11-00-810-C61. SPEED TRIM SYSTEM TESTS NORMAL. OK FOR SERVICE.
- [SDR ASAA2023032742617](https://openairdocs.org/sdr/ASAA2023032742617.md): Unknown · unknown · Mar 27, 2023 · N956AK · Boeing 7379 · Airfoil Anti/De-ice System
  > WING ANTI-ICE L-VALVE AND MASTER CAUTION WHEN TURNED ON INFLIGHT. GROUNDED - YES. PERFORMED L/H WING TAI HEALTH CHECK REF B737-9 AMM TASK 30-11-11-200-801. DURING REMOVAL OF INLET TUBE FOUND STANDING WATER. REMOVED WATER BY BLOWING N2 THROUGH LINE. INSPECTED L
- [SDR ASAA2023032642602](https://openairdocs.org/sdr/ASAA2023032642602.md): Unknown · unknown · Mar 26, 2023 · N956AK · Boeing 7379 · Navigation System
  > IN CRUISE LOSS OF LNAV & VNAV WITH FMC P/RST LIGHT & NO FMC ON EITHER CDU. NO MAP INFO ON CAPT DISPLAY. REFERRED QRH & POSITIONED FMC SWITCH TO BOTH ON RIGHT WHICH RESTORED NORMAL SINGLE FMC OPERATION. GROUNDED - YES. CYCLED BOTH FMC C/B REF B737-9 IFIM 34-61-
- [SDR ASAA2023032042428](https://openairdocs.org/sdr/ASAA2023032042428.md): Unknown · unknown · Mar 20, 2023 · N956AK · Boeing 7379 · Autopilot System
  > SPEED TRIM FAIL AFTER START. GROUNDED - YES. PERFORMED DFCS BITE LIBRARY TEST FOR SPEED TRIM REF B737-9 FIM 22-11-00-810-D73. TEST PASSED, NO FURTHER FAULTS.
- [SDR ASAA2023012741704](https://openairdocs.org/sdr/ASAA2023012741704.md): Fmc · false indication · Jan 27, 2023 · N956AK · Boeing 7379 · Flight Management Computing Hardware System
  > DURING PREFLIGHT FOUND FMC DISAGREE MESSAGE ON ND. GROUNDED - YES. PERFORMED QRH PROCEDURE MESSAGE CLEARED.
- [SDR ASAA2023012541847](https://openairdocs.org/sdr/ASAA2023012541847.md): Connector · not reported · Jan 25, 2023 · N956AK · Boeing 7379 · Fuel Indicating System
  > LEFT TANK FUEL INBALANCE: MONITORED FUEL FROM SAN - FLL. NO IMBALANCE UNTIL CONFIGURING FOR LDG. ON LONG FINAL LEFT TANK FUEL IMBALANCE MSG ON LDG LFT TANK @ 3.2 RT TANK @ 4.4. DURING TAXI IN LFT TANK INDICATOR WENT BACK TO 4.4, WITH FUEL IMBALANCE MSG NO LONG
- [SDR ASAA2023012301590](https://openairdocs.org/sdr/ASAA2023012301590.md): Unknown · malfunctioned · Jan 20, 2023 · N956AK · Boeing 7379 · Aircraft Fuel System
  > # 1 MAIN FUEL TANK FLUCTUATES + AND - 1,000 LBS. CONFIRMED BY FUEL USED. GROUNDED - YES. PERFORMED B737-9 IFIM TASK 28-41-00-810-802. NO FAULTS FOUND. GOOD FOR SERVICE.
- [SDR ASAA2023012391591](https://openairdocs.org/sdr/ASAA2023012391591.md): Connector · unsecure · Jan 19, 2023 · N956AK · Boeing 7379 · Fuel System Wiring
  > APPROX. 2:15 INTO FLIGHT IMBAL ALERT ANNUNCIATED. #1 MAIN TANK WAS 1300 LBS LESS THAN #2 TANK. THERE WAS 3000 LBS IN CENTER TANK. WHEN CENTER TANK WAS EMPTY WE BALANCED WING FUEL TO EVEN. APPROX 10 MINUTES AFTER WINGS WERE BALANCED THE LEFT WING FUEL INCREASED
- [SDR ASAA2023011871552](https://openairdocs.org/sdr/ASAA2023011871552.md): Fmc · faulted · Jan 17, 2023 · N956AK · Boeing 7379 · Flight Management Computing Hardware System
  > BOTH FMC'S ARE MESSAGING " FMC DISAGREE". GROUNDED - YES. PER B737-9 IFIM TASK 34-61-00-810-918 RECYCLED THE POWER FOR FMC. PERFORMED FMC OPS CHECK GOOD. REF B737-9 AMM 34-61-00-710-801.

## 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 = 'N956AK' AND registry_match = 'registration'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/aircraft/N956AK/reports

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