# Service difficulty reports: N948AK

A list on [N948AK](https://openairdocs.org/aircraft/N948AK.md).

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

- [SDR ASAA2025101961726](https://openairdocs.org/sdr/ASAA2025101961726.md): Light · missing · Oct 19, 2025 · N948AK · Boeing 7379 · Emergency Lighting
  > 3 INCH STRIP OF EMERGENCY EXIT LIGHTING IS MISSING FROM FLOOR. GROUNDED - YES. REMOVED DEFECTIVE 3'' PIECE OF PHOTOLUMINESCENT STRIP AT 16 DEF. ALSO REMOVED ADJACENT STRIP FROM 13 DEF TO 16 DEF. REPLACED W/ NEW SOLID RUN OF PHOTOLUMINESCENT FLOOR PROXY LIGHT S
- [SDR ASAA2024031948548](https://openairdocs.org/sdr/ASAA2024031948548.md): Light · malfunctioned · Mar 19, 2024 · N948AK · Boeing 7379 · Emergency Lighting
  > EMER EXIT LIGHTS NOT ARMED LIGHT REMAINED ILLUMINATE WHEN SWITCH MOVED TO ARMED. GROUNDED - YES. CYCLED AIRCRAFT POWER AND PERFORMED EMERGENCY LIGHT OPS TEST AMM TASK 33-51-00-720-801. TEST NORMAL "NOT ARMED" LIGHT EXTINGUISHED OK FOR SERVICE SEAMC NOTIFIED.
- [SDR ASAA2023102545850](https://openairdocs.org/sdr/ASAA2023102545850.md): Unknown · unknown · Oct 25, 2023 · N948AK · Boeing 7379 · Pneumatic Distribution System
  > WHILE ACCOMPLISHING T/C 31-005-00 FOUND BLEED PM SENSOR 1 L SMT MAINT MESSAGE 36-21020. GROUNDED - YES. PERFORMED IFIM TASK 36-21-00-810-803. INITIAL EVAL FOUND TO BE INTERMITTENT FAULT.
- [SDR ASAA2023092845359](https://openairdocs.org/sdr/ASAA2023092845359.md): Unknown · unknown · Sep 28, 2023 · N948AK · Boeing 7379 · Pneumatic System
  > MAINTENANCE LIGHT ILLUMINATED. GROUNDED - YES. FOUND FAULT CODE 36-12020. COMPLIED WITH AMM 36-00-00-730-801. ALL FAULT INDICATIONS CLEARED. AIRCRAFT OK FOR SERVICE.
- [SDR ASAA2023092645348](https://openairdocs.org/sdr/ASAA2023092645348.md): Unknown · unknown · Sep 26, 2023 · N948AK · Boeing 7379 · Central Warning
  > AFTER LANDING MAINTENANCE CAUTION ILLUMINATED. GROUNDED - YES. FOUND FAULT CODE 36-12020. COMPLIED WITH AMM 36-00-00-730-801 ALL FAULT INDICATIONS CLEARED. AIRCRAFT OK FOR SERVICE. SEAMC NOTIFIED.
- [SDR ASAA2023092445301](https://openairdocs.org/sdr/ASAA2023092445301.md): Unknown · unknown · Sep 24, 2023 · N948AK · Boeing 7379 · Pneumatic Distribution System
  > AFTER LANDING, OVERHEAD "MAINT" LIGHT ILLUMINATED. SYSTEM STATUS MESSAGE READS " BLEED FAMV L". GROUNDED - YES. INTERAGATED OMF FOUND 2 MX MSG'S 36-12020 & 36-21020. ACCOMPLISHED IFIM 36-12-00-810-801 ENG 1 BLEED AIR SYS. PASSED ALL FAULTS CLEARED, MX LIGHT OU
- [SDR ASAA2023092445294](https://openairdocs.org/sdr/ASAA2023092445294.md): Contactor · faulty · Sep 24, 2023 · N948AK · Boeing 7379 · AC Generation System
  > ON PREFLIGHT FOUND THE SOURCE OFF WITH APU SELECTED ON LEFT / #1. GROUNDED - YES. REMOVED AND REPLACED AUXILIARY POWER BREAKER C803- P91 AND PERFORMED GOOD TEST OF THE AUXILIARY POWER BREAKER AS PER AMM 24-21-41/401.
- [SDR ASAA2023082944834](https://openairdocs.org/sdr/ASAA2023082944834.md): Unknown · unknown · Aug 29, 2023 · N948AK · Boeing 7379 · Autopilot System
  > DURING HYBRID AUTOLAND TO RWY 16R IN SEATTLE, FO'S HGS PANEL DID NOT DISPLAY "FLARE" UNTIL 50' ABOVE RUNWAY. CAPTAIN SIDE ANNUNCIATOR SHOWED "FLARE" ARMED FROM 500' UNTIL TOUCHDOWN. DISCONNECTED AUTOLAND AND MADE VISUAL LANDING. GROUNDED - YES. DFCS FAULT REVI
- [SDR ASAA2023082644789](https://openairdocs.org/sdr/ASAA2023082644789.md): Pressure Valve · faulty · Aug 26, 2023 · N948AK · Boeing 7379 · Pneumatic Distribution System
  > DURING CLIMB R/H DUCT PRESSURE 67 PSI, L/H 43 PSI (BELOW 10K' N1-85.0)DURING CLIMB ABOVE 18K' R/H DUCK PX 65-70 PSI, L/H 46 PSI N1 - 92.0)DURING CRUISE FL350 BOTH DUCT PX @ 36 PSI N1 85.2. GROUNDED - YES. REF TSR714883 FOR PRSOV REMOVED AND REPLACED ON #2 ENG.
- [SDR ASAA2023082544806](https://openairdocs.org/sdr/ASAA2023082544806.md): Unknown · unknown · Aug 25, 2023 · N948AK · Boeing 7379 · Engine Fuel and Control
  > GE DIAGNOSTICS REPORTS THE #1 ENGINE IS GENERATING ALERTS FOR PS3 OUT OF RANGE, PS3 PRESSURE DISAGREE FAULT, P3B OUT OF RANGE, P3B PRESSURE DISAGREE FAULT, OR P3B VS PS3 PRESSURE DISAGREE FAULT. (TASK CARD 73-ASA-01)(#PRI 1/ETOPS) CNR # 20230825097ETOPS SIGNIF
- [SDR ASAA2023082344745](https://openairdocs.org/sdr/ASAA2023082344745.md): Unknown · unknown · Aug 23, 2023 · N948AK · Boeing 7379 · Engine Oil System (Airframe Furnished)
  > OVERHEAD MAINT LIGHT ILLUMINATED AFTER LANDING. GROUNDED - YES. OPENED ENG #2 FAN COWLING. REMOVED AND INSPECTED ODMS SENSOR = SENSOR FOUND CLEAN WITH NO DEBRIS FOUND ON SENSOR, REPLACED O RING, AND REINSTALLED ODMS SENSOR. NO LEAK CHECK REQUIRED DUE TO 2 MECH
- [SDR ASAA2023082344744](https://openairdocs.org/sdr/ASAA2023082344744.md): Unknown · unknown · Aug 23, 2023 · N948AK · Boeing 7379 · Engine Oil System (Airframe Furnished)
  > OVERHEAD LIGHT ILLUMINATED AFTER LANDING. GROUNDED - YES. REF LP 60901976. ENG #2 ODMS CHIP COUNT RESET TO ZERO. OPENED ENG #2 FAN COWLING. REMOVED AND INSPECTED ODMS SENSOR = SENSOR FOUND CLEAN WITH NO DEBRIS FOUND ON SENSOR, REPLACED O RING, AND REINSTALLED
- [SDR ASAA2023082244729](https://openairdocs.org/sdr/ASAA2023082244729.md): Idg · faulty · Aug 22, 2023 · N948AK · Boeing 7379 · Electrical Power System
  > DURING THE COMPLETION OF TASK CARD 31-005-00, FOUND SCHEDULED MAINT TASK MESSAGE "BLEED FAMV RVDT R". GROUNDED - YES. C/W TECH SERVICES REQUEST - CONTINUITY CHECK OF WIRING @ CONTACTS NOTED FROM D15876 TO D15840A = NO FAULTS FOUND, WIRING CHECKS OK. REPLACED R
- [SDR ASAA2023080544523](https://openairdocs.org/sdr/ASAA2023080544523.md): Power Unit · faulty · Aug 5, 2023 · N948AK · Boeing 7379 · APU Start/Ignition System
  > TECHNICAL SERVICES REQUEST APU FAULT REVIEW----(#PRI2/ETOPS)----. GROUNDED - YES. 49 FAULT HISTORY: FAULT 49-41255, START POWER UNIT SHOWS HIGH TEMP DETECTED BY APU CONTROLLER. ON LEGS 1 THROUGH 12. PER B737-9 FIM 49-40-00-810-819. REMOVED AND REPLACED APU S
- [SDR ASAA2023080544436](https://openairdocs.org/sdr/ASAA2023080544436.md): Pressure Valve · faulty · Aug 5, 2023 · N948AK · Boeing 7379 · Pneumatic System
  > RT ENG BLEED CAUTION LT ILLUMINATED SOON AFTER TOP OF DESCENT @ APPROX FL290 AT THRUST IDLE. COMPLETED QRH PROCEDURES AND LIGHT REMAINED ON. GROUNDED - YES. STATUS MSG "BLEED PRSOV R" WITH MTX MSGS 36-00171 AND 36-11041. BLEED TRIP RESET. ELECTRICAL LRU - GROU
- [SDR ASAA2023080444466](https://openairdocs.org/sdr/ASAA2023080444466.md): Unknown · unknown · Aug 4, 2023 · N948AK · Boeing 7379 · Airborne Auxiliary Power Unit (APU) System
  > APU ON START AFTER LANDING RAN QRH-OFF FOR MINUTES RESTART SUCCESSFULL. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023071544057](https://openairdocs.org/sdr/ASAA2023071544057.md): Unknown · unknown · Jul 15, 2023 · N948AK · Boeing 7379 · APU Start/Ignition System
  > APU FAULT LIGHT ILLUMINATED DURING FIRST START ATTEMPT AFTER LANDING. SECOND ATTEMPT WAS SUCCESSFUL. GROUNDED - YES. INTERROGATED CDU FOUND NO EXISTING APU FAULTS, NORMAL START ACCOMPLISHED.
- [SDR ASAA2023062343723](https://openairdocs.org/sdr/ASAA2023062343723.md): Unknown · unknown · Jun 23, 2023 · N948AK · Boeing 7379 · Fuel Controlling System
  > WHILE ACCOMPLISHING T/C 05-020-01, DISCOVERED (SMT) MESSAGE ENG 1 EEC C2. GROUNDED - YES. ACCOMPLISHED IFIM TASK G73-10-00-810-803. NO COORELATED MSG'S FOUND. ENG. IDLE SYSTEM TEST GOOD. ERASED SMT MESSAGE.
- [SDR ASAA2023062343722](https://openairdocs.org/sdr/ASAA2023062343722.md): Unknown · unknown · Jun 23, 2023 · N948AK · Boeing 7379 · Fuel Controlling System
  > WHILE ACCOMPLISHING T/C 05-020-01 DISCOVERED (SMT) MESSAGE ENG 2 EEC C2. GROUNDED - YES. ACCOMPLISHED IFIM TASK G73-10-00-810-804. NO COORELATED MSG'S FOUND. IDLE SYSTEM TEST GOOD. SMT MESSAGE ERASED.
- [SDR ASAA2023062343692](https://openairdocs.org/sdr/ASAA2023062343692.md): Module · faulty · Jun 23, 2023 · N948AK · Boeing 7379 · AC Generation System
  > SOURCE OFF LIGHT ON GEN 1 SIDE WHEN TRANSFERRING FROM GROUND POWER TO APU GEN. GROUNDED - YES. OMF SHOWS NO FAULTS, GCU & BPCU NO FAULTS, ELECTRICAL PANEL MODULE TEST NO FAULTS AMM 46-13-00, AMM 24-21-00, AMM 24-41-00, AMM 24-31-00, CYCLED A/C POWER WITH NO FI
- [SDR ASAA2023050443153](https://openairdocs.org/sdr/ASAA2023050443153.md): Valve · unknown · May 4, 2023 · N948AK · Boeing 7379 · Pneumatic System
  > AFTER X-BLEED START ON ENG #2 AND ENG #2 STARTER CUTOUT LIGHT EXTINGUISHED, THE L BLEED LIGHT AND L ENG ANTI ICE LIGHT CAME ON. DID QRH FOR BLEED LIGHT AND PRESSED TRIP RESET L BLEED LIGHT WENT OUT AND L ENG ANTI ICE LIGHT STAYED ON. GROUNDED - YES. CHECKED AN
- [SDR ASAA2023050343162](https://openairdocs.org/sdr/ASAA2023050343162.md): Unknown · unknown · May 3, 2023 · N948AK · Boeing 7379 · Airborne Auxiliary Power Unit (APU) System
  > APU FAULT LIGHT ILLUMINATED WHEN ATTEMPTING TO START THE APU AFTER LANDING. GROUNDED - YES. FOUND MAINT MSG 49-41254 START CONVERTER UNIT SHOWS START SYS INOP. PERFORMED B737-9 IFIM TASK 49-40-00-810-818, PERFORMED 5 SUCCESSFUL STARTS OF APU AND MESSAGE DID NO
- [SDR ASAA2023031542373](https://openairdocs.org/sdr/ASAA2023031542373.md): Unknown · unknown · Mar 15, 2023 · N948AK · Boeing 7379 · Pneumatic Distribution System
  > ON ROLLOUT AFTER LANDING, MASTER CAUTION, OVERHEAD, ILLUM AMBER "MAINT" LIGHT. GROUNDED - YES. FOUND FAULT CODE 36-12020 FAN AIR MODULATING VALVE IS NOT IN COMMANDED POSITION. ACCOMPLISHED B737-9 IFIM 36-12-00. ALL FAULTS CLEARED.
- [SDR ASAA2023030442180](https://openairdocs.org/sdr/ASAA2023030442180.md): Sensor · faulty · Mar 4, 2023 · N948AK · Boeing 7379 · Air Intake Anti/De-Ice System
  > #1 ENGINE ENG ANTI ICE COWL VALVE LIGHT ILLUMINATED TWICE. TURNED OFF WENT OUT. TURNED ON CAME BACK. GROUNDED - YES. CHECKED OMF FOR ANY EXISTING FAULT AND FOUND NO RELATED MAINT MSG. ACCOMPLISHED B737-9 IFIM TASK 30-21-00-810-807 COWL ANTI-ICE VALVE TEST GOOD
- [SDR ASAA2023030342172](https://openairdocs.org/sdr/ASAA2023030342172.md): Unknown · unknown · Mar 3, 2023 · N948AK · Boeing 7379 · Autopilot System
  > ON INITIALLY SETTING POWER (AT APPROX 50%) "STAB OUT OF TRIM" LIGHT ILLUM. (LOW SPEED <10 KTS). WE ABORTED AND DID A CONFIG CHECK - WE RECEIVED A TAKEOFF WARNING. ONCE CLEAR, LT EXTINGUISHED. GROUNDED - YES. DFCS BITE B737-9 DFCS FIM TASK 22-11-00-810-D72.SHOW
- [SDR ASAA2023022342072](https://openairdocs.org/sdr/ASAA2023022342072.md): Valve · faulty · Feb 23, 2023 · N948AK · Boeing 7379 · Air Intake Anti/De-Ice System
  > LEFT COWL ANTI-ICE MASTER CAUTION ILLUMINATED AT 90 KTS ON TAKEOFF ROLL. EXTINGUISHED ON ITS OWN CLIMBING THROUGH 2000 FT. GROUNDED - YES. REMOVED ENGINE ANTI ICE VALVE PER B737-9 AMM 30-21-11-000-801. INSTALLED LH COWL ANTI ICE VALVE UP TO AMM 32-21-11-400-80
- [SDR ASAA2023021041897](https://openairdocs.org/sdr/ASAA2023021041897.md): Unknown · unknown · Feb 10, 2023 · N948AK · Boeing 7379 · HF Communications System
  > DURING FLIGHT UNABLE TO TRANSMIT ON SAT RADIO TO MEDLINK OR DISPATCH. INBOUND COMMUNICATION WAS WEAK. LATER IN FLIGHT POSITIVE COMM ESTABLISHED OVER BZN. GROUNDED - YES. PERFORMED CHECKING THE FAULTS MESSAGE IN EXTENDED MAINTENANCE. NO FAULTS FOUND AND PERFORM
- [SDR ASAA2022122741301](https://openairdocs.org/sdr/ASAA2022122741301.md): Heater · inoperative · Dec 27, 2022 · N948AK · Boeing 7379 · Pitot/Static Anti-Ice System
  > "TEMP PROBE" AMBER LIGHT IS ILLUMINATED ON THE OVERHEAD PANEL. GROUNDED - YES. REMOVED AND REPLACED TAT PROBE REF B737-9 AMM 34-21-06.
- [SDR ASAA2022122541300](https://openairdocs.org/sdr/ASAA2022122541300.md): Separator · faulted · Dec 25, 2022 · N948AK · Boeing 7379 · Turbine Engine Oil System
  > ON LANDING MASTER CAUTION OVERHEAD ILLUMINATED. MAINT ILLUMINATED ON OVERHEAD. MASTER CAUTION LIGHT GOES OUT WHEN PUSHED. GROUNDED - YES. REMOVED OIL DEBRIS MONITORING SEPARATOR P/N # 362-075-003-0 AND REPLACED WITH NEW P/N # 362-075-005-0 REF. ASA T/C # SBLEA
- [SDR ASAA2022121441128](https://openairdocs.org/sdr/ASAA2022121441128.md): Fmc · faulted · Dec 14, 2022 · N948AK · Boeing 7379 · Flight Management Computing Hardware System
  > FMC DISAGREE BOTH FMC'S. GROUNDED - YES. ACCOMPLISHED IFIM 34-61-00-810-918. INITIAL EVALUATION PASSES.
- [SDR ASAA2022113041005](https://openairdocs.org/sdr/ASAA2022113041005.md): Autothrottle Sys · faulted · Nov 30, 2022 · N948AK · Boeing 7379 · Auto Throttle System
  > DURING INITIAL CLIMB AIRCRAFT WAS INITIALLY ACCELERATING TO COMMANDED SPEEDS, BUT A/T P/RST AMBER LIGHT WAS FLASHING CONTINUOUSLY FOR 15 SECONDS. AS WE RETRACTED FLAPS FROM 1 TO 0 THE THRUST LEVERS COMMANDED / MOVED TOWARDS IDLE WHILE THE AIRCRAFT FD PITCHED F
- [SDR ASAA2022112640927](https://openairdocs.org/sdr/ASAA2022112640927.md): Fmc · malfunctioned · Nov 26, 2022 · N948AK · Boeing 7379 · Flight Management Computing Hardware System
  > FMC DISAGREE SHOWN ON SCRATCHPAD ON THE GROUND. GROUNDED - YES. QRH PROCEDURE COMPLIED WITH AND PROBLEM RESOLVED.
- [SDR ASAA2022111640800](https://openairdocs.org/sdr/ASAA2022111640800.md): Chip Detector · faulty · Nov 16, 2022 · N948AK · Boeing 7379 · Engine Indicating System
  > CFM DIAGNOSTICS IS SHOWING #1 ENGINE ODMS CUMULATIVE CHIP COUNT IS STILL REPORTING ELEVATED AFTER RECENT MAINTENANCE/INSPECTION WITH REPORT OF NO CHIPS. ODMS CHIP COUNT REQUIRES INSPECTION AND RESET. GROUNDED - YES. ACCOMP ODMS SENSOR INSP REF AMM 79-00-00. SE
- [SDR ASAA2022111440787](https://openairdocs.org/sdr/ASAA2022111440787.md): Warning Message · false activation · Nov 14, 2022 · N948AK · Boeing 7379 · Engine Oil Distribution (Airframe Furnished)
  > MAINT LIGHT ON AFTER LANDING. GROUNDED - YES. FOUND LATCH FAULT CODE 79210351 & 79-42862 PERFORMED B737-9 FIM 679-21-00-810-803. INSPECTED ODMS SENSOR IAW B737-9 AMM G79-00-00-210-801-600. NO DEBRIS FOUND ON SENSOR. PERFORMED TEST #7 CHIP COUNT 0. REINSTALLED
- [SDR ASAA2022110440649](https://openairdocs.org/sdr/ASAA2022110440649.md): Anti-Ice Valve · failed · Nov 4, 2022 · N948AK · Boeing 7379 · Airfoil Anti/De-ice System
  > LEFT WING ANTI-ICE FAILED CLOSED. GROUNDED - YES. REMOVED AND REPLACED L/H WING ANTI-ICE REF B737-9 AMM 30-11-11 OPS CHECK GOOD.
- [SDR ASAA2022102740491](https://openairdocs.org/sdr/ASAA2022102740491.md): Fmc · failed · Oct 27, 2022 · N948AK · Boeing 7379 · Flight Management Computing Hardware System
  > RIGHT FMC FAILED IN CRUISE FLIGHT. GROUNDED - YES. FOLLOWED B737-9 IFIM TASK 34-61-00-810-883, FMC-2 HAS AN INTERNAL FAULT. PERFORMED INITIAL EVALUATION STEP "B" TASKS 1-15. NO PROBLEM WITH FMC PROMPT, FAULT IS INTERMITTENT. NO HISTORY WITHIN 30 DAYS. OPS CHEC
- [SDR ASAA2022100440208](https://openairdocs.org/sdr/ASAA2022100440208.md): Pressure Sensor · out of limits · Oct 4, 2022 · N948AK · Boeing 7379 · Engine Bleed Air System
  > WHILE PERFORMING ASA T/C 31-005-00, FOUND SMT MESSAGE FAULT BLEED PM SENSOR 1 L. UNDER PRESENT LEG MAINT MSG 36-21020. ENGINE START. ENGINE -1 MANIFOLD DUCT PRESSURE SENSOR 1 SIGNAL IS OUT OF RANGE. GROUNDED - YES. PERFORMED ASA T/C 31-005-001 AND FOUND BLEED

## 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 = 'N948AK' AND registry_match = 'registration'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/aircraft/N948AK/reports

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