# Service difficulty reports: N928AK

A list on [N928AK](https://openairdocs.org/aircraft/N928AK.md).

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

- [SDR ASAA2025111662363](https://openairdocs.org/sdr/ASAA2025111662363.md): Lamp · inoperative · Nov 16, 2025 · N928AK · Boeing 7379 · Emergency Lighting
  > R2 DOOR EMERGENCY SLIDE LIGHT INOP. GROUNDED - YES. RELAMPED R2 DOOR EMERGENCY LIGHT, OPS CHECK GOOD REF B737 MAX AMM 33-51-04.P.O 1056359.1.
- [SDR ASAA2024062550530](https://openairdocs.org/sdr/ASAA2024062550530.md): Lens · wrong part · Jun 25, 2024 · N928AK · Boeing 7379 · Emergency Lighting
  > EXIT SIGN @ 16ABC DOES NOT HAVE ARROW POINTING TOWARDS DOOR. GROUNDED - YES. REMOVED AND REPLACED EXIT SIGN AT 16ABC AS REQ'D.
- [SDR ASAA2023102845904](https://openairdocs.org/sdr/ASAA2023102845904.md): Unknown · unknown · Oct 28, 2023 · N928AK · Boeing 7379 · Windshield/Door Rain/Ice Removal
  > R FWD WINDOW HEAT OVERHEAT LIGHT ILLUMINATED. GROUNDED - YES. ACCOMPLISHED IFIM 30-41-00-810-829. OPS NORMAL REF AMM 33-41-00-710-801.
- [SDR ASAA2023100645485](https://openairdocs.org/sdr/ASAA2023100645485.md): Unknown · unknown · Oct 6, 2023 · N928AK · Boeing 7379 · Cabin Cooling System
  > WHILE PERFORMING TASK CARD # 31-005-00 FOUND ACTIVE MAINTENANCE MESSAGE 21-55341 FOR IASC-R (AIR COND) HAS AN AIR/GND DISCRETE INPUT ERROR. GROUNDED - YES. PERFORMED IFIM TASK 21-51-00-810-835, PERFORMED IBIT FOR RH AIR CONDITION SYSTEM TEST. TEST PASSED. CLEA
- [SDR ASAA2023092645340](https://openairdocs.org/sdr/ASAA2023092645340.md): Packing · damaged · Sep 26, 2023 · N928AK · Boeing 7379 · Engine Oil Distribution (Airframe Furnished)
  > OVERHEAD "MAIN" LIGHT ILLUMINATED UPON LANDING/ROLLOUT. GROUNDED - YES. (RESOLVED ON W/O: 1970377 TASKCARD: N/R-00005) PERFORMED #1 ENGINE ODMS SENSOR INSPECTION REF AMM 79-00-00-210-804-G00. NO CONTAMINENTS FOUND. REPLACED ODMS SENSOR SEAL. RESET ODMS CHIP
- [SDR ASAA2023092345274](https://openairdocs.org/sdr/ASAA2023092345274.md): Unknown · unknown · Sep 23, 2023 · N928AK · Boeing 7379 · HF Communications System
  > HF 1 INOP AND NO SELCAL PRIOR TO EEP. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023091345133](https://openairdocs.org/sdr/ASAA2023091345133.md): Unknown · unknown · Sep 13, 2023 · N928AK · Boeing 7379 · Flight Management Computing Hardware System
  > RESET LIGHTS FOR CAPT A/T,A/P, FMC DO NOT ILLUM ON TEST(ABOVE CAPT RT PFD). GROUNDED - YES. FOUND C/B D1 ON P18-1 PANEL OPEN RESET C/B REF. A.M.M. 20-60-61 VERIFIED AUTO FLIGHT STATUS ANNOUNCIATOR OPS CHECK GOOD REF. A.M.M. 22-1132 SEAMC CHRIS NOTIFIED.
- [SDR ASAA2023090244937](https://openairdocs.org/sdr/ASAA2023090244937.md): Tire · damaged · Sep 2, 2023 · N928AK · Boeing 7379 · Tire
  > DURING WALK AROUND FOUND #2 TIRE TREAD DAMAGED (TREAD PLY SEPARATED FROM TIRE). REPORTED BLEW UP ON LANDING. GROUNDED - YES. REMOVED AND REPLACED MLG TIRE ASSY 1 AND 2 IAW AMM 32-45-11 AND PERFORMED TIRE LOSS/TIRE BURST INSPECTION IAW AMM 05-51-54-210-801. FOU
- [SDR ASAA2023083145181](https://openairdocs.org/sdr/ASAA2023083145181.md): Fuel Nozzle · dirty · Aug 31, 2023 · N928AK · Boeing 7379 · Fuel Injector Nozzle
  > GE DIAGNOSTICS REPORTS #1 ENGINE TREND DATA SHOWS EXCESS COKING OF THE FUEL NOZZLE MAIN ORIFICES. (#PRI3/ETOPS) (FULL SET FUEL NOZZLE REPLACEMENT)NO EXTENSION ALLOWED (225 CYCLES OR 45 DAYS, WHICHEVER OCCURS FIRST).CNR 20230831043. GROUNDED - YES. (RESOLVED ON
- [SDR ASAA2023060943528](https://openairdocs.org/sdr/ASAA2023060943528.md): Unknown · unknown · Jun 9, 2023 · N928AK · Boeing 7379 · Windshield/Door Rain/Ice Removal
  > LEFT SIDE #2 WINDOW HEAT OVERHEAT LIGHT ILLUMINATED. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023060443450](https://openairdocs.org/sdr/ASAA2023060443450.md): Valve · worn · Jun 4, 2023 · N928AK · Boeing 7379 · Pneumatic Distribution System
  > DURING ENGINE WASH OF #1 ENG FOUND BOLT ON HPSOV LOCKOUT WORN. GROUNDED - YES. REMOVED AND REPLACED HPSOV PER B737-9 AMM 36-11-07. PERFORMED OPS CHECK AND LEAK CHECK. ALL CHECKS GOOD. NO OTHER DEFECTS OR DISCREPANCIES NOTED.
- [SDR ASAA2023050943194](https://openairdocs.org/sdr/ASAA2023050943194.md): Unknown · unknown · May 9, 2023 · N928AK · Boeing 7379 · Fuel Controlling System
  > MAINT LIGHT ON AFTER LANDING. GROUNDED - YES. CK'D AND FOUND FAULT MSG 73-41401-ENG 1 EEC CHANNEL A NO ARINC-429 INPUT. ACCOMPLISHED EEC TEST ON # 1 ENG TEST PASSED NO FAULT NOTED MAINT LIGHT OUT. REF B737-9 IFIM TASK 73-20-00-810-805.
- [SDR ASAA2023040242661](https://openairdocs.org/sdr/ASAA2023040242661.md): Unknown · unknown · Apr 2, 2023 · N928AK · Boeing 7379 · Cabin Temperature Control System
  > "MAINT" LIGHT ILLUMINATED. GROUNDED - YES. INTERROGATED FAULTS AND FOUND FAULT 21-65151, CONTROL CABIN TRIM VALVE SIGNAL IS OUT OF RANGE OR VALVE IS NOT IN COMMANDED POSITION. C/W B737-9 IFIM TASK 21-61-00. FAULT IS INTERMITTENT. MAINTENANCE LIGHT EXTINGUISHED
- [SDR ASAA2023030842251](https://openairdocs.org/sdr/ASAA2023030842251.md): Filter · clogged · Mar 8, 2023 · N928AK · Boeing 7379 · APU Oil System
  > APU LUBE FILTER DPI EXTENDED. GROUNDED - YES. REMOVED AND REPLACED APU LUBE FILTER AND RESET FILTER HOUSING DPI PER B737-9 AMM 49-91-12.
- [SDR ASAA2023021942013](https://openairdocs.org/sdr/ASAA2023021942013.md): Sensor · faulty · Feb 19, 2023 · N928AK · Boeing 7379 · Engine Oil Indicating System
  > #1 ENGINE IS ALERTING FOR OIL FILTER DELTA PRESSURE INCREASE AND APPROACHING OIL FILTER BYPASS INDICATION. GROUNDED - YES. COMPLETED TSR STEPS 1, 5, 6, NO DEBRIS NOTED. TSR STEPS 2 & 3 COMPLETED, NO CONTAMINATION FOUND IN OIL FILTER. COMPLETED TSR ALL STEPS N
- [SDR ASAA2023021541969](https://openairdocs.org/sdr/ASAA2023021541969.md): Strip · inoperative · Feb 15, 2023 · N928AK · Boeing 7379 · Emergency Lighting
  > FA REPORTS PHOTOLUMINESCENT FLOOR LIGHTS ARE NOT ILLUMINATING. GROUNDED - YES. VERIFIED PHOTOLUMINESCENT STRIP/FLOOR PROXIMITY LIGHT INOP AT LAV D, AND BOTH AT FIRST CLASS CLOSET. PHOTOLUMINESCENCE STRIPS REPLACED. OPS CHECK GOOD. REF B737-9 AMM 33-51-15.
- [SDR ASAA2023021441939](https://openairdocs.org/sdr/ASAA2023021441939.md): Unknown · unknown · Feb 14, 2023 · N928AK · Boeing 7379 · APU Controls
  > APU FAULT ILLUMINATED DURING START ON FIRST AND SECOND ATTEMPT. GROUNDED - YES. FOUND MAINT MSG 49-61002 & 49-61144 IN FAULT HISTORY. ACCOMPLISHED B737-9 IFIM TASKS 49-60-00-810-848 & 49-60-00-810-823. BOTH FAULTS WERE INTERMITTENT.
- [SDR ASAA2023020741871](https://openairdocs.org/sdr/ASAA2023020741871.md): Unknown · unknown · Feb 7, 2023 · N928AK · Boeing 7379 · Airfoil Anti/De-ice System
  > LEFT WING ANTI-ICE "L-VALVE" MASTER CAUTION LIGHT ILLUMINATED WITH THE WING ANTI-ICE SWITCH IN THE ON POSITION THE "LVALVE" MASTER CAUTION LIGHT WENT OUT WHEN THE SWITCH MOVED BACK TO THE OFF POSITION. GROUNDED - YES. FOUND AND REMOVED WATER FROM ANTI ICE VALV
- [SDR ASAA2022120841088](https://openairdocs.org/sdr/ASAA2022120841088.md): Anti-Ice Valve · unknown · Dec 8, 2022 · N928AK · Boeing 7379 · Airfoil Anti/De-ice System
  > LEFT WING ANTI ICE VALVE DID NOT EXTINGUISH WHEN ANTI ICE VALVE TURNED ON. LEFT WING REMAINED ICED UP, RIGHT WING WAS CLEAN. GROUNDED - YES. IT WAS A HARD FAIL ON GND AS WELL WHEN CREW SHOWED ME. BUT AFTER TRYING IT AGAIN THE L WING LT WENT OUT AFTER 15 SEC. A
- [SDR ASAA2022120741044](https://openairdocs.org/sdr/ASAA2022120741044.md): Display · faulted · Dec 7, 2022 · N928AK · Boeing 7379 · Flight Management Computing Hardware System
  > LNAV AND VNAV NOT ENGAGED ON GROUND IN PDX ON TAXI OUT. ALSO FO AMBER FLAGS OF MAP ON PFD AND NO VSPD AND LND ALT O ND. GROUNDED - YES. MX CONTROL ADVISED TO RUN ASA QRH 11.2 TO PULL AND RESET CB D16 P6-1 PANEL. FLAGS GONE AND LNAV/VNAV ARMED UPON C/B RESET.
- [SDR ASAA2022103140547](https://openairdocs.org/sdr/ASAA2022103140547.md): Anti-Ice Valve · faulted · Oct 31, 2022 · N928AK · Boeing 7379 · Airfoil Anti/De-ice System
  > L VALVE R VALVE WING ANTI - ICE CAUTION LIGHTS ILLUMINATED IN FLIGHT. GROUNDED - YES. REMOVED L WING ANTI-ICE VALVE REF B737-9 AMM 30-11-11-000-801 STEPS E, F (2), (3), (4), & (6). INSTALLED L/H WING ANTI ICE VALVE REF AMM 30-11-11-400-801 STEPS 3. A - 3. H (2
- [SDR ASAA2022092240012](https://openairdocs.org/sdr/ASAA2022092240012.md): Modulating Valve · degraded · Sep 22, 2022 · N928AK · Boeing 7379 · Pneumatic Distribution System
  > ASA TECH SERVICES REQUEST FOR REPLACEMENT OF THE #1 FAN AIR MODULATING VALVE (FAMV) DUE TO AERMETRIC TRENDS. GROUNDED - YES. REF ASA T/C M9-36CMPT-24668-1. REMOVED AND REPLACED #1 ENG FAMV.
- [SDR ASAA2022091939997](https://openairdocs.org/sdr/ASAA2022091939997.md): Apu · warning light · Sep 19, 2022 · N928AK · Boeing 7379 · APU Start/Ignition System
  > APU FAULT LIGHT ON START UP AFTER LANDING. GROUNDED - YES. FOUND FAULT CODE 49130100 WITH CORRELATED MTX MESSAGE. 49-41254 START CONV. SHOWS START SYSTEM INOP. PERFORMED B737-9 IFIM TASK 49-40-00-810-818 START FAULT ISOL. PROCEDURE, FOUND NON ACTIVE FAULT, SUS
- [SDR ASAA2022081839572](https://openairdocs.org/sdr/ASAA2022081839572.md): Unknown · unknown · Aug 18, 2022 · N928AK · Boeing 737 · Flight Management Computing Hardware System
  > IN CRUISE, F/O SIDE VTK ILLUMINATED ALONG WITH A/P P/RST LIGHT AND LOST LNAV/VNAV. WENT TO CWS. SINGLE FMC MESSAGE ON SCRATCHPAD. CONDIDTIONS RESOLVED ITSLEF IN LESS THAN ONE MINUTE BEFORE WE COULD TROUBLESHOOT W/ QRH. WAS ABLE TO RE-ENGAGE LNAV/VNAV. ALL OTHE
- [SDR ASAA2022081639541](https://openairdocs.org/sdr/ASAA2022081639541.md): Pressure Valve · faulted · Aug 16, 2022 · N928AK · Boeing 7379 · Pneumatic Distribution System
  > ON CLIMB OUT FROM SPOKANE, THE RIGHT BLEED AIR DUCT INDICATED 64 PSI. THE LEFT INDICATED 45 PSI. BOTH ENGINES PRODUCING 89.7% N1. IN CRUISE FLIGHT BOTH BLEED AIR DUCTS INDICATED 35PSI. GROUNDED - YES. REMOVED AND REPLACED #2 ENG PRSOV REF B737-9 AMM 36-11-04.
- [SDR ASAA2022081339487](https://openairdocs.org/sdr/ASAA2022081339487.md): Autopilot Sys · intermittent · Aug 13, 2022 · N928AK · Boeing 7379 · Autopilot System
  > FLIGHT LEVEL 340, APROX 3:50 INTO FLIGHT, AP"A" DISENGAGED. CWR BELOW FMA RED A/P P/RST AND FMC P/RST YELLOW WERE FLICKERING ON & OFF AP WOULD NOT RE-ENGAGE CYCLED FLIGHT DIRECTORS AND WAS ABLE TO RE-ENGAGE THE AP. GROUNDED - YES. COMPLIED WITH B737-9 IFIM TA
- [SDR ASAA2022080839432](https://openairdocs.org/sdr/ASAA2022080839432.md): Unknown · unknown · Aug 8, 2022 · N928AK · Boeing 7379 · Flight Management Computing Hardware System
  > INFO ONLY, ON JJSON2 ARRIVAL AT ABOUT 11,OOO' DUAL FMC FAILURE, VTK ON CA SIDE SELF CORRECTED IN ABOUT 30 SECONDS. NO OTHER ANOMALIES ON APPROACH. GROUNDED - YES. PERFORMED FMC 1 & FMC 2 C/B RESET A6 & D16. OVERHEAD LIGHTS EXTINGUISHED VTK OUT OF VIEW IAW B737
- [SDR ASAA2022072139154](https://openairdocs.org/sdr/ASAA2022072139154.md): Modulating Valve · faulty · Jul 21, 2022 · N928AK · Boeing 7379 · Pneumatic Distribution System
  > OVERHEAD MAINT LIGHT ILLUMINATED ON LANDING ROLLOUT. GROUNDED - YES. STATUS MESSAGE PRESENT "BLEED FAMV R" FAULT CODE 361 12542 MAINT MESSAGE 36-12021 LATCHED. REMOVED #2 ENG FAMV REF B737-9 AMM 36-12-03-000-801 INSTALLELD R FAMV OPS TEST GOOD, GROUND VERIFICA
- [SDR ASAA2022061838751](https://openairdocs.org/sdr/ASAA2022061838751.md): Actuator · faulty · Jun 18, 2022 · N928AK · Boeing 7379 · Autopilot System
  > MACH TRIM FAIL UPON RECALL DURING AFTER START CHECK. GROUNDED - YES. PERFORMED B737-9 IFIM 22-11-00-810-074, FOUND FAULT CODE 22-11191, 22-11276 AND 22-11202. FOUND FAULT CODE 22-11336 ON CHANNEL B. CYCLED AIRCRAFT POWER, FAULTS RETURNED BOTH A AND B CHANNELS.
- [SDR ASAA2022052038409](https://openairdocs.org/sdr/ASAA2022052038409.md): Fmc · intermittent · May 20, 2022 · N928AK · Boeing 7379 · Flight Management Computing Hardware System
  > DURING CRUISE, L FMC FAILURE LASTING FOR 30 SECONDS. GROUNDED - YES. NO ACTIVE FAULTS LOGGED ON OMF. ACCOMPLISHED FMC OPERATIONAL TEST REF. B737-9 AMM 34-61-00. OPS CHK GOOD. GROUND VERIFICATION TEST GOOD.
- [SDR ASAA2022050538220](https://openairdocs.org/sdr/ASAA2022050538220.md): Anti-Ice Valve · faulty · May 5, 2022 · N928AK · Boeing 7379 · Air Intake Anti/De-Ice System
  > HAD ANTI-ICE MASTER CAUTION ON TAKE OFF ROLL N1 91.4, 28K ENGINE ANTI-ICE ON. GROUNDED - YES. PERFORMED ENGINE HIGH POWER RUN TAXI PER B737-9 AMM 71-00-00 DURING TAXI COWL VALVE LIGHT ON #1 ENG ILLUMINATED 3 TIMES TO 3 FROM RUN UP PAD DURING HIGH POWER RUN #1
- [SDR ASAA2022042938171](https://openairdocs.org/sdr/ASAA2022042938171.md): Warning Light · false indication · Apr 29, 2022 · N928AK · Boeing 7379 · Pitot/Static Anti-Ice System
  > PROBE HEAT TEMP PROBE LIGHT ILLUMINATED AFTER LANDING. GROUNDED - YES. PERFORMED PITOT PROBE, AOA SENSOR, AND TAT PROBE HEATER SYSTEM TEST REF B737-9 AMM 30-31-00. NO DEFECTS NOTED, OPS CHECK GOOD. AIRCRAFT OK FOR SERVICE.
- [SDR ASAA2022042738149](https://openairdocs.org/sdr/ASAA2022042738149.md): Unknown · unknown · Apr 27, 2022 · N928AK · Boeing 737 · Flight Management Computing Hardware System
  > IN CRUISE THE LNAV/VNAV DISENGAGED AND BOTH CDU'S WENT TO MENU MODE WITH THE FMS MISSING ON THE MENU. CAPTAIN DISPLAY BRIEFLY SHOWED A MAP FLAG WE SELECTED A/P B AND ALL STARTED TO WORK NORMALLY CONSULTED QRH BUT EVERYTHING RECOVERED BEFORE WE WERE ABLE TO RUN
- [SDR ASAA2022042738148](https://openairdocs.org/sdr/ASAA2022042738148.md): Unknown · unknown · Apr 27, 2022 · N928AK · Boeing 737890 · Flight Management Computing Hardware System
  > THE ATC LOGON/STATUS MENU SHOWS DATA LINK FAIL AND WE WERE UNABLE TO RE-LOGON TO CPDLC. GROUNDED - YES. REBOOTED ACARS CMU REBOOTED #1 FMC COMPUTER DUE TPO LOCKUP CPDLC FUNCTION TEST OK. REF. B737-9 AMM 34-61-00-720-899 OPS CK OK.
- [SDR ASAA2022030537639](https://openairdocs.org/sdr/ASAA2022030537639.md): Anti-Ice Valve · faulty · Mar 5, 2022 · N928AK · Boeing 7379 · Engine Bleed Air System
  > ENGINE #2 AMBER COWL-ANTI-ICE CAUTION LIGHT ILLUMINATED DURING CLIMB WITH THE ENG ANTI-ICE SWITCHES ON. GROUNDED - YES. REMOVED #2 ENG ANTI-ICE VALVE REF B737-9 AMM TASK 30-21-11-00-801. PARTIALLY INSTALLED REPLACEMENT #2 ENG ANTI-ICE VALVE REF AMM TASK 30-21-
- [SDR ASAA2022022637582](https://openairdocs.org/sdr/ASAA2022022637582.md): Sensor · faulty · Feb 26, 2022 · N928AK · Boeing 7379 · APU Controls
  > APU AUTO SHUTDOWN AND DISPLAYED "FAULT" LIGHT AFTER TAXI IN. GROUNDED - YES. REMOVED AND REPLACED INLET TEMP SENSOR REF B737-9 AMM 49-61-31. RAN APU, OPS CHECK GOOD. NO FAULT NOTED.
- [SDR ASAA2022022437577](https://openairdocs.org/sdr/ASAA2022022437577.md): Unknown · unknown · Feb 24, 2022 · N928AK · Boeing 7379 · APU Controls
  > APU FAULT ILLUMINATED A FEW MINUTES AFTER NORMAL START AND APU SHUTDOWN. GROUNDED - YES. INTERROGATED FAULT HISTORY FOUND INLET OVERHEAT SHUTDOWN, SENSOR FAILURE SHUTDOWN, INLET TEMP SENSOR SHOWS OUT OF RANGE, ALL FAULTS OCCURRED ON SAME LEG. FAULT CODES 49-91

## 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 = 'N928AK' AND registry_match = 'registration'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/aircraft/N928AK/reports

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