# Service difficulty reports: N921AK

A list on [N921AK](https://openairdocs.org/aircraft/N921AK.md).

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

Page 1 of 2 · 64 reports

- [SDR ASAA2026080867883](https://openairdocs.org/sdr/ASAA2026080867883.md): Lamp · inoperative · Aug 8, 2026 · N921AK · Boeing 7379 · Emergency Lighting
  > ROW 17ABC LOWER EMERGENCY EXIT LIGHT ASSY HAS BULBS INOP. GROUNDED - YES. RELAMPED 17ABC LWR EMERY EXIT LIGHT ASSY, OPS CHECK GOOD REF B737 AMM 33-51-04.
- [SDR ASAA2026072367850](https://openairdocs.org/sdr/ASAA2026072367850.md): Transition Panel · corroded · Jul 23, 2026 · N921AK · Boeing 7379 · Fuselage Miscellaneous Structure
  > AFT CARGO COMPT RIGHT SIDE TRANSITION PANEL UPPER AND LOWER SURFACE HAS CORROSION NUMEROUS PLACE BETWEEN BS767 AND BS727J+13. GROUNDED - YES. BLENDED AWAY CORROSION. ORIGINAL THICKNESS.040, MAT LOSS IN VARIOUS LOCATIONS AT.009, NEW THICKNESS IN VARIOUS LOCAT
- [SDR ASAA2026072367849](https://openairdocs.org/sdr/ASAA2026072367849.md): Transition Panel · corroded · Jul 23, 2026 · N921AK · Boeing 7379 · Fuselage Miscellaneous Structure
  > AFT CARGO COMPT RIGHT SIDE TRANSITION PANEL UPPER AND LOWER SURFACE HAS CORROSION NUMEROUS PLACE BETWEEN BS727J+13 AND BS727+4. GROUNDED - YES. BLENDED AWAY CORROSION ORIGINAL THICKNESS.040 MAT LOSS AT GREATEST.006 IN VARIOUS PLACES, NEW THICKNESS.034 AREA
- [SDR ASAA2026072267848](https://openairdocs.org/sdr/ASAA2026072267848.md): Transition Panel · corroded · Jul 22, 2026 · N921AK · Boeing 7379 · Fuselage Miscellaneous Structure
  > FWD CARGO PIT R/H TRANSITION PANEL STARTING AROUND STA 500C AND CONTINUING AFT TO REAR BULKHEAD PANEL HAS NUMEROUS AREAS OF CORROSION, GROUNDED - YES. BLENDED AWAY CORROSION ORIGINAL THICKNESS.040, MAT. LOSS AT GREATEST.009, NEW THICKNESS AT LOWEST.031, AR
- [SDR ASAA2026072267846](https://openairdocs.org/sdr/ASAA2026072267846.md): Transition Panel · corroded · Jul 22, 2026 · N921AK · Boeing 7379 · Fuselage Miscellaneous Structure
  > AFT PIT LEFT TRANSITION PANEL UPPER AND LOWER SURFACE HAS CORROSION NUMEROUS PLACE BETWEEN BS747 AND BS727J+13. GROUNDED - YES. BLENDED AWAY CORROSION, ORIGINAL THICKNESS.040, MAT LOSS AT LOWEST.007 NEW THICKNESS.033, AREAS OUT OF LIMITS PER B737-MAX9 SRM 5
- [SDR ASAA2026072267845](https://openairdocs.org/sdr/ASAA2026072267845.md): Transition Panel · corroded · Jul 22, 2026 · N921AK · Boeing 7379 · Fuselage Miscellaneous Structure
  > AFT PIT LEFT TRANSITION PANEL UPPER AND LOWER SURFACE HAS CORROSION NUMEROUS PLACE BETWEEN BS727J+13 AND BS727+4 AS MARKS. GROUNDED - YES. BLENDED AWAY CORROSION, ORIGINAL THICKNESS.040, MAT LOSS AT GREATEST.017, NEW THICKNESS AT LOWEST.023. AREAS OUT OF LI
- [SDR ASAA2025082460418](https://openairdocs.org/sdr/ASAA2025082460418.md): Lens · damaged · Aug 24, 2025 · N921AK · Boeing 7379 · Emergency Lighting
  > DURING INSPECTION FOUND EMERGENCY EXIT LENS DAMAGE AT R2 DOOR AFT G4 TRASH COMPARTMENT. SRXR430X. GROUNDED - YES. REMOVED AND REPLACED EMERGENCY EXIT LIGHT SSY AT R2 DOOR AFT G4 TRASH COMPARTMENT. OPS CHECKS GOOD IAW B737 AMM 33-51-01-960-802. SRXR430X.
- [SDR ASAA2025082360439](https://openairdocs.org/sdr/ASAA2025082360439.md): Seat Track · damaged · Aug 23, 2025 · N921AK · Boeing 7379 · Fuselage, Seat/Cargo Attach Fittings
  > PILOTS SEAT TRACK INBOARD AFT HAS ELONGATED HOLE. SRXR430X. GROUNDED - YES. REMOVED AND REPLACED SEAT TRACK INBORD AFT ON PILOTSEAT IAW B737 AMM 25-11-11-400-801. SRXR430X.
- [SDR ASAA2025082360438](https://openairdocs.org/sdr/ASAA2025082360438.md): Seat Track · damaged · Aug 23, 2025 · N921AK · Boeing 7379 · Fuselage, Seat/Cargo Attach Fittings
  > COPILOTS SEAT TRACK INBOARD AFT HAS ELONGATED HOLE. SRXR430X. GROUNDED - YES. REMOVED AND REPLACED SEAT TRACK INBOARD AFT ON COPILOTS SEAT AREA IAW B737 AMM 25-11-11-400-801. SRXR430X.
- [SDR ASAA2024070550925](https://openairdocs.org/sdr/ASAA2024070550925.md): Light · damaged · Jul 5, 2024 · N921AK · Boeing 7379 · Emergency Lighting
  > FA REPORTS EMERGENCY LIGHT STRIP FROM CLOSET TO 1C IS A TRIPPING HAZARD. GROUNDED - YES. (RESOLVED ON W/O: 2006473 TASKCARD: N/R-00002) REVERSED MTX PROCEDURE REF MEL 33-51-03A REMOVED INTERIM REPAIR, INSTALLED NEW FROM STOCK PHOTOLUMINESCENT STRIP APPROX. 36
- [SDR ASAA2023110746127](https://openairdocs.org/sdr/ASAA2023110746127.md): Unknown · unknown · Nov 7, 2023 · N921AK · Boeing 7379 · Fuel Controlling System
  > GE DIAGNOSTICS REPORTS THE #2 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) CNR # 20231108006ETOPS SIGNIFICANT
- [SDR ASAA2023110346010](https://openairdocs.org/sdr/ASAA2023110346010.md): Unknown · unknown · Nov 3, 2023 · N921AK · Boeing 7379 · Fuel Controlling System
  > OVERHEAD PANEL MAINT LIGHT ILLUMINATED. GROUNDED - YES. OMF SHOWS MAINTENANCE MESSAGE 73-44791 (EEC IS POWERED WHEN NOT COMMANDED). ACCOMPLISHED IFIM G73-21-00-810-A00. OPS TEST NORMAL REF AMM G73-21-00-801-G00.
- [SDR ASAA2023102545841](https://openairdocs.org/sdr/ASAA2023102545841.md): Unknown · unknown · Oct 25, 2023 · N921AK · Boeing 7379 · AC Generation System
  > WITH APU RUNNING NO FREQS OR VOLTS DISPLAYED. BLEED AIR WORKS. GROUNDED - YES. ACCOMPLISHED APU START PROCEDURE REF B737-9 AMM 49-11-00 ALL OPS NML WITH GOOD VOLTS AND FREQS. NO STATUS MSG ON OMF.
- [SDR ASAA2023100645514](https://openairdocs.org/sdr/ASAA2023100645514.md): Unknown · unknown · Oct 6, 2023 · N921AK · Boeing 7379 · Flight Management Computing Hardware System
  > ON GROUND BEFORE PUSHBACK, RECEIVED "FMC DISAGREE CAUTION ON MFDS. GROUNDED - YES. RAN QRH 11.2. CONDITION CLEARED.
- [SDR ASAA2023092345255](https://openairdocs.org/sdr/ASAA2023092345255.md): Unknown · unknown · Sep 23, 2023 · N921AK · Boeing 7379 · Airborne Auxiliary Power Unit (APU) System
  > MAINT LIGHT ILLUMINATED. GROUNDED - YES. MDS STATUS INDICATES APU OIL QUANTITY. OMF INDICATES 49-94304. PER IFIM 49-94304, LATCHED MESSAGE ERASED AND DOES NOT RE-POPULATE DURING APU OPERATION AND ECU RESTART. INSPECTED OIL QUANTITY, FINDING WITHIN LIMITS (OIL
- [SDR ASAA2023082844810](https://openairdocs.org/sdr/ASAA2023082844810.md): Unknown · unknown · Aug 28, 2023 · N921AK · Boeing 7379 · Detection System
  > CARGO FIRE WARNING PANEL DOES NOT TEST CORRECTLY. GROUNDED - YES. CLEANED HORN CUTOUT SWITCH IN MAIN WHEELWELL, IAW SWPM 20-60-01 AND OP CHECKED GOOD IAW B737-MAX AMM 26-16-00-710-801.
- [SDR ASAA2023081944678](https://openairdocs.org/sdr/ASAA2023081944678.md): Unknown · unknown · Aug 19, 2023 · N921AK · Boeing 7379 · Navigation System
  > WXR FAIL MSG DISPLAYED DURING CLIMB OUT. SYSTEM BEGAN TO WORK AGAIN. NO MSG DISPLAYED. GROUNDED - YES. PERFORMED WXR OPERATIONAL TEST REF B737-9 AMM 34-41-00 AS A PRECAUTION. WXR TEST PASSES.
- [SDR ASAA2023081844683](https://openairdocs.org/sdr/ASAA2023081844683.md): Unknown · unknown · Aug 18, 2023 · N921AK · Boeing 7379 · Flight Management Computing Hardware System
  > FMC DISAGREE. GROUNDED - YES. RESET PER QRH SUCCESSFUL.
- [SDR ASAA2023080544417](https://openairdocs.org/sdr/ASAA2023080544417.md): Unknown · unknown · Aug 5, 2023 · N921AK · Boeing 7379 · Autopilot System
  > SPEED TRIM FAIL LIGHT ON RECALL. GROUNDED - YES. REF. IFIM 22-11-810-D73 PERFORMED AUTOTEST. PASSED SPEED TRIM FAIL LIGHT EXTINGUISHED OPS TEST GOOD.
- [SDR ASAA2023080344570](https://openairdocs.org/sdr/ASAA2023080344570.md): Apu · leaking · Aug 3, 2023 · N921AK · Boeing 7379 · Airborne Auxiliary Power Unit (APU) System
  > VERIFICATION OF APU LEAK. GROUNDED - YES. REMOVED AND REPLACED APU PER ASA T/C 49-ASA-02 AND T/C 49-ASA-03. THIS CLOSES TSR 714736 SEA MC JEREMY NOTIFIED.
- [SDR ASAA2023080144367](https://openairdocs.org/sdr/ASAA2023080144367.md): Unknown · unknown · Aug 1, 2023 · N921AK · Boeing 7379 · APU Oil System
  > AFT GALLEY HAS A PIZZA OVEN OR MAYBE A CAMP FIRE SMELL STARTED ON THE GROUND W/ APU ON ALL OVENS AND COFFEE MAKERS ARE OFF. TURNED CAB/UTIL AND IFE/PASS SEAT SWITCHES OFF AS WELL AS EQUIP COOLING TO ALTN. SMELL STILL PERSIST. PULLED CBS ON BACK FA PANEL AND ST
- [SDR ASAA2023072244175](https://openairdocs.org/sdr/ASAA2023072244175.md): Valve · unknown · Jul 22, 2023 · N921AK · Boeing 7379 · Pneumatic Distribution System
  > WHILE PERFORMING NO1 ENG WASH T/C FOUND HPSOV OPEN/CLOSE LOCK BOLT HELICOIL CAME OFF. GROUNDED - YES. REMOVED AND REPLACED HPSOV WITH REF AMM 36-11-07. OPS CHECK GOOD.
- [SDR ASAA2023071244002](https://openairdocs.org/sdr/ASAA2023071244002.md): Unknown · unknown · Jul 12, 2023 · N921AK · Boeing 7379 · Airborne Auxiliary Power Unit (APU) System
  > APU FAULT LIGHT ILLUMINATED ON START ATTEMPT. ATTEMPTED 2 STARTS. GROUNDED - YES. UPON ARRIVAL MX PERFORMED THREE SUCCESSFUL APU STARTS. ALL INDICATIONS NORMAL. SEE LOG PG 60630075 FOR MEL DEFERRAL.APU START AND OPS REF. AMM 49-11-00.
- [SDR ASAA2023071043960](https://openairdocs.org/sdr/ASAA2023071043960.md): Unknown · unknown · Jul 10, 2023 · N921AK · Boeing 7379 · Flight Management Computing Hardware System
  > ALL FUNCTION OF CAPT SIDE FMC/MCDU INOP/FROZEN NO FMC FLAGS OR MAP FLAGS. GROUNDED - YES. OPENED AND CLOSED C/B'S A6 AND A7 AT P18-2 (FMCS CMPTR-1 AND FMCS CDU 1) AFTER SYSTEM RESET MCDU-1 WORKS NORMAL AND PERFORMED GOOD INSTALLATION TEST OF CAPT MCDU AS PER R
- [SDR ASAA2023070943935](https://openairdocs.org/sdr/ASAA2023070943935.md): Bulb · inoperative · Jul 9, 2023 · N921AK · Boeing 7379 · Emergency Lighting
  > SLIDE/OVERWING LIGHT ON R/H SIDE BETWEEN EMERGENCY DOORS INOP. GROUNDED - YES. REMOVED AND REPLACED SLIDE/OVERWING LAMP REF B737-9 AMM 33-51-04. LIGHT FUNCTIONS NORMALLY, NO FURTHER DEFECTS NOTED.
- [SDR ASAA2023062943845](https://openairdocs.org/sdr/ASAA2023062943845.md): Modulating Valve · faulty · Jun 29, 2023 · N921AK · Boeing 7379 · Pneumatic Distribution System
  > AFTER LANDING, THE MASTER CAUTION AND AMBER "MAINT" LIGHT ON THE OVERHEAD PANEL ILLUMINATED. GROUNDED - YES. UPON NAVIGATING ONBOARD MTX COMPUTER FOUND CORRELATED FAULT CODE 36-12-12021 (#2 ENGINE) BLEED FAMV R. PLACED ON MEL 36-12-01A. REMOVED AND REPLACED RH
- [SDR ASAA2023062743811](https://openairdocs.org/sdr/ASAA2023062743811.md): Unknown · unknown · Jun 27, 2023 · N921AK · Boeing 7379 · Fuel Controlling System
  > WHILE PERFORMING T/C 05-020-01 FOUND FAULT CODE ENG 1 EEC C2 ON SMT MESSAGES. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023062743810](https://openairdocs.org/sdr/ASAA2023062743810.md): Unknown · unknown · Jun 27, 2023 · N921AK · Boeing 7379 · Fuel Controlling System
  > WHILE PERFORMING T/C 05-020-01 FOUND FAULT CODE ENG 2 EEC C2 ON SMT MESSAGES. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023042542999](https://openairdocs.org/sdr/ASAA2023042542999.md): Unknown · unknown · Apr 25, 2023 · N921AK · Boeing 7379 · Flight Management Computing Hardware System
  > CAPT FMC FAILED FOR ABOUT 20 SECONDS AND CAME BACK IN CRUISE. CAPT ND VTK. NO FMC ON MCDU'S. FMC P/RST LIGHT. ALL NORMAL BEFORE QRH COULD BE PERFORMED. GROUNDED - YES. LAST LEG L/H FMC FAULTED "INTERMITTENT FMC PRES POS LAT". PERFORMED B737-9 FIM 34-61-00-810-
- [SDR ASAA2023041942929](https://openairdocs.org/sdr/ASAA2023041942929.md): Unknown · unknown · Apr 19, 2023 · N921AK · Boeing 7379 · Ice/Rain Protection System
  > WING ANTI ICE "L VALVE" LIGHT ILLUMINATED WHEN THE WING ANTI ICE WAS TURNED ON. LIGHT TURNNED OFF WHEN WING ANTI ICE WAS TURNED OFF. GROUNDED - YES. PERFORMED LEFT WING THERMAL ANIT ICE VALVE HEALTH CHECK REF B737-9 AMM 30-11-11. OPS CHECK GOOD, AND INLET TUBE
- [SDR ASAA2023041042807](https://openairdocs.org/sdr/ASAA2023041042807.md): Unknown · unknown · Apr 10, 2023 · N921AK · Boeing 7379 · Navigation System
  > MOMENTARY FAILURE OF LEFT FMC. IT RE-ENGAGED ON ITS OWN. GROUNDED - YES. VERIFIED L/H FMC HAD AN INTERMITTENT FAULT AT 2351Z. CYCLED PWR TO A/C ACCOMP. FMC SENSOR TEST ALL SHOW OK REF. B737-9 AMM 34-61-00-710-002.
- [SDR ASAA2023031142294](https://openairdocs.org/sdr/ASAA2023031142294.md): Unknown · unknown · Mar 11, 2023 · N921AK · Boeing 7379 · Fuel Controlling System
  > ENG #1 FAULT MSG 73-43850 FOUND DURING TC 05-020-01. GROUNDED - YES. NO ACTIVE MESSAGES FOUND, NO CORRELATED FLIGHT DECK EFFECTS. FOLLOWED B737-9 IFIM TASK G73-21-00-810-937, OMF SHOWED NOT ACTIVE FOR MX MSG, IFIM STATES THERE WAS AN INTERMITTENT FAULT.
- [SDR ASAA2023022742097](https://openairdocs.org/sdr/ASAA2023022742097.md): Windshield · faulty · Feb 27, 2023 · N921AK · Boeing 7379 · Windshield/Door Rain/Ice Removal
  > LH FWD WINDOW HEAT. OVHT LIGHT ILLUMINATED. GROUNDED - YES. REMOVED AND REPLACED LH FWD NO 1 WINDOW PER B737-9 AMM 56-11-11.
- [SDR ASAA2023022542090](https://openairdocs.org/sdr/ASAA2023022542090.md): Unknown · unknown · Feb 25, 2023 · N921AK · Boeing 7379 · Windshield/Door Rain/Ice Removal
  > L FWD WINDOW OVERHEAT LIGHT ILLUMINATED. GROUNDED - YES. ACCOMPLISHED RESET PROCEDURE PER QRH. OVERHEAT LIGHT REMAINED EXTINGUISHED.
- [SDR ASAA2023022542085](https://openairdocs.org/sdr/ASAA2023022542085.md): Unknown · unknown · Feb 25, 2023 · N921AK · Boeing 7379 · Windshield/Door Rain/Ice Removal
  > L FWD WINDOW OVERHEAT LIGHT ILLUMINATED GROUNDED - YES. ACCOMPLISHED RESET PROCEDURE PER QRH. OVERHEAT LIGHT REMAINED EXTINGUISHED.
- [SDR ASAA2023022542076](https://openairdocs.org/sdr/ASAA2023022542076.md): Unknown · unknown · Feb 25, 2023 · N921AK · Boeing 7379 · Windshield/Door Rain/Ice Removal
  > L FWD WINDOW OVERHEAT LIGHT ILLUMINATED EXTINGUISHED AFTER QRH PROCEDURE. GROUNDED - YES. VERIFIED WHCU ON OVERRIDE MODE ACTIVATED TO SPARE SENSOR REF B737-9 AMM 30-41-11-440-801 LEFT FWD WINDOW HEAT OPS NML.
- [SDR ASAA2023022542070](https://openairdocs.org/sdr/ASAA2023022542070.md): Control Unit · faulty · Feb 25, 2023 · N921AK · Boeing 7379 · Windshield/Door Rain/Ice Removal
  > LEFT FORWARD WINDOW OVERHEAT LIGHT ILLUMINATED. GROUNDED - YES. ACCOMPLISHED B737-9 IFIM 30-41-00-810-828 FOR LEFT FWD WINDOW OVERHEAT LIGHT. SWAPPED WHCU PER B737-9 AMM 30-41-11. REMOVED AND REPLACED WHCU #1 IAW AMM 30-41-11. OPS TEST GOOD.
- [SDR ASAA2023022442056](https://openairdocs.org/sdr/ASAA2023022442056.md): Unknown · unknown · Feb 24, 2023 · N921AK · Boeing 7379 · Windshield/Door Rain/Ice Removal
  > L FWD WINDOW HEAT LIGHT ILLUMINATED, EXTINGUISHED AFTER QRH PROC. GROUNDED - YES. AFTER A/C RETURN TO GATE, OBSERVED OVERHEAT LIGHT ON FOR LEFT FORWARD. ACCOMPLISHED B737-9 IFIM 30-41-00-810-828. RESISTANCE CK FOR PRIMARY SENSOR SHOWS OPEN, SPARE SENSOR CKED N
- [SDR ASAA2023021841992](https://openairdocs.org/sdr/ASAA2023021841992.md): Unknown · unknown · Feb 18, 2023 · N921AK · Boeing 7379 · Windshield/Door Rain/Ice Removal
  > LEFT FORWARD WINDOW HEAT "AMBER OVERHEAT". EXTINGUISHED AFTER 3 MINUTE WAIT IN OFF POSITION PER QRH. GROUNDED - YES. ACCOMPLISHED RESET PROCEDURE PER QRH. LIGHT EXTINGUISHED AFTER 3 MINUTE WAIT IN OFF POSITION.
- [SDR ASAA2023021741990](https://openairdocs.org/sdr/ASAA2023021741990.md): Unknown · unknown · Feb 17, 2023 · N921AK · Boeing 7379 · Windshield/Door Rain/Ice Removal
  > LEFT FWD WINDOW OVERHEAT LIGHT ILLUMINATED DURING FLIGHT DECK PREP. GROUNDED - YES. RAN QRH 3.7 OVERHEAT LIGHT EXTINGUISHED AND REMAINS EXTINGUISHED AFTER SWITCH TURNED BACK ON.
- [SDR ASAA2023021341933](https://openairdocs.org/sdr/ASAA2023021341933.md): Unknown · unknown · Feb 13, 2023 · N921AK · Boeing 7379 · Windshield/Door Rain/Ice Removal
  > LEFT FRONT WINDOW OVERHEAT LIGHT. GROUNDED - YES. RAN ASA QRH 3.7, LIGHT REMAINED OFF.
- [SDR ASAA2023010841474](https://openairdocs.org/sdr/ASAA2023010841474.md): Fmc · fault message · Jan 8, 2023 · N921AK · Boeing 7379 · Flight Management Computing Hardware System
  > MOMENTARY 30 SECOND LEFT FMC FAILURE CHANGING ALTITUDE 340 TO 360 IN VNAV WITH SPEED INTERVENTION SELECTED. GROUNDED - YES. LEFT FMC FAULTED 'PRES POS LAT RATE' LAST LEG. ACCOMP B737-9 IFIM 34-61-00-810-918, SYS CKS NML PER SAME, GND VERIFICATION SUCCESSFUL.
- [SDR ASAA2022122091191](https://openairdocs.org/sdr/ASAA2022122091191.md): Anti-Ice Valve · faulted · Dec 19, 2022 · N921AK · Boeing 7379 · Airfoil Anti/De-ice System
  > ON ARRIVAL, WING ANTI ICE WAS POSITIONED ON AND L VALVE LIGHT STAYED ILLUMINATED, MASTER CAUTION CAME ON AFTER 10 SECONDS. GROUNDED - YES. REMOVED AND REPLACED LH WING ANTI ICE VALVE REF B737-9 AMM 30-11-11-000-801, 30-11-11-400-801. OPS CHECK GOOD REF AMM 30-
- [SDR ASAA2022120941089](https://openairdocs.org/sdr/ASAA2022120941089.md): Anti-Ice Valve · false indication · Dec 9, 2022 · N921AK · Boeing 7379 · Airfoil Anti/De-ice System
  > TURNED WING ANTI-ICE ON IN FLIGHT IN 'ICING CONDITIONS. MASTER CAUTION L VALVE ILLUMINATED, TURNED WING ANTI-ICE OFF AND LIGHT EXTINGUISHED. GROUNDED - YES. PERFORMED MAX WING ANTI-ICE VALVE HEALTH CHECK REF MAX-30EA-24968. NO FAULT NOTED.
- [SDR ASAA2022111440781](https://openairdocs.org/sdr/ASAA2022111440781.md): Fmc · failed · Nov 14, 2022 · N921AK · Boeing 7379 · Flight Management Computing Hardware System
  > TWICE ENROUTE FMC LEFT "FAILED" FOR 60-90 SECONDS. VTK FLAG AND MAP FLAG DISPLAYED ON LEFT ND, FMC MENU ON BOTH MCDU. RIGHT FMC ACTED NORMAL FMC "L" RECOVERED ON ITS OWN WITHOUT QRH INTERVENTION. GROUNDED - YES. PERFORMED B737-9 IFIM 34-61-00-810-918 RESET FMC
- [SDR ASAA2022072339184](https://openairdocs.org/sdr/ASAA2022072339184.md): Fmc · intermittent · Jul 23, 2022 · N921AK · Boeing 7379 · Flight Management Computing Hardware System
  > FMC DISAGREE GROUNDED - YES. PERFORMED FMC DISAGREE QRH PROCEDURE FROM ASA QRH PAGE 11.2. FMC DISAGREE MESSAGE NO LONGER DISPLAYED.
- [SDR ASAA2022062438833](https://openairdocs.org/sdr/ASAA2022062438833.md): Rvdt · failed · Jun 24, 2022 · N921AK · Boeing 7379 · Pneumatic Distribution System
  > ENGINE 1 SHOWS FAULT REF TC 31-005-00 BLEED FAMV RVDT SIGNAL OUT OF RANGE. 36-12030,. GROUNDED - YES. ACCOMPLISHED B737-9 IFIM TASK 36-12-00-810-803. NO FAULTS FOUND. ACCOMPLISHED WIRING CHECKS PER STEP C(2)(C). CONTINUITY CHECKS WERE GOOD, PIN TO PIN AND PIN
- [SDR ASAA2022061138618](https://openairdocs.org/sdr/ASAA2022061138618.md): Fmc · failed · Jun 11, 2022 · N921AK · Boeing 7379 · Flight Management Computing Hardware System
  > FMC-R FAILED IN FLIGHT. GROUNDED - YES. CYCLED FMCS #1 & #2 CMPTR C/BS REF. B737-9 IFIM 34-61-00-810-918. FAULT DISAPPEARED. PERFORMED FMCS OPS TEST REF B737-9 AMM 34-61-00-710-801. TEST OK.
- [SDR ASAA2022060138542](https://openairdocs.org/sdr/ASAA2022060138542.md): Tire · burst · Jun 1, 2022 · N921AK · Boeing 7379 · Tire
  > DURING TAXI INTO THE GATE RAMPERS STOPPED US SHORT. NOTIFIED US OF FLAT TIRE AND DAMAGE TO TIRE. NORMAL LANDING AND TAXI IN. AUTO BRAKE 3 WAS SELECTED FOR LANDING. NLG & MLG GEAR PINS INSTALLED PER B737-9 AMM 32-00-01. GROUNDED - YES. FOUND #4 MAIN TIRE BURST
- [SDR ASAA2022052538452](https://openairdocs.org/sdr/ASAA2022052538452.md): Transceiver · failed · May 25, 2022 · N921AK · Boeing 7379 · HF Communications System
  > HF 2 SHOWS " FAIL" DOES NOT TRANSMIT OR RECEIVE. GROUNDED - YES. REMOVED AND REPLACED HF#2 TRANSCEIVER REF B737-9 AMM 23-11-21. OPS CHECK GOOD. GROUND VERIFICATION TEST SUCCESSFUL.

Next page: https://openairdocs.org/aircraft/N921AK/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 n_number = 'N921AK' AND registry_match = 'registration'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/aircraft/N921AK/reports

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