# N924AK: 2021 Boeing 737-9

- Status: Valid registration
- Airframe: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (registry code 138469A, 48 seats)
- Engine: [CFM International LEAP-1B28 series](https://openairdocs.org/engine/cfm-international-leap-1b28-series) (registry code 13120)
- Data sheets: [TCDS A16WE](https://openairdocs.org/tcds/A16WE) (The Boeing Company), [TCDS E00088EN](https://openairdocs.org/tcds/E00088EN) (CFM International S.A.) (OpenAirDocs)
- Serial number: 43333
- Year built: 2021
- Type: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: October 26, 2021
- Certificate issued: November 2, 2021
- Expires: November 30, 2028
- Mode S code: ACCD10
- Registered owner: [Bank Of Utah Trustee](https://openairdocs.org/faa-owner/BANK%20OF%20UTAH%20TRUSTEE)
- Location: [Salt Lake City, UT](https://openairdocs.org/faa-place/UT/Salt%20Lake%20City)
- Owner type: Corporation
- Owner's area on the map: 40.7558° N, 111.8843° W: Placed by OpenAirDocs at the center of ZIP code 84111, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=924AK
- Page: https://openairdocs.org/aircraft/N924AK

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. The registry lists only the engine series, so ADs for every CFM International LEAP-1B28 model are included.

## ADs that may apply (OpenAirDocs): 48 in force

### Matched by airframe (Boeing 737-9)

- [AD 2026-18-07](https://openairdocs.org/ad/2026-18-07): Fuselage · Boeing 737-8, 737-9 and 737-8200. Effective Oct 22, 2026
- [AD 2026-15-11](https://openairdocs.org/ad/2026-15-11): Fuselage · Boeing 737-8, 737-9 and 737-8200. Effective Sep 10, 2026
- [AD 2026-14-11](https://openairdocs.org/ad/2026-14-11): Air Conditioning · Boeing 737-8, 737-9 and 737-8200. Effective Jul 13, 2026
- [AD 2026-13-17](https://openairdocs.org/ad/2026-13-17): Navigation · Boeing 737-8, 737-9 and 737-8200. Effective Jul 1, 2026
- [AD 2026-13-02](https://openairdocs.org/ad/2026-13-02): Navigation · Airbus Canada Limited Partnership 18, 49-46, 80-A and 555 more. Effective Jul 1, 2026
- [AD 2025-25-04](https://openairdocs.org/ad/2025-25-04): Equipment/furnishings · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 6 more. Effective Jan 16, 2026
- [AD 2025-02-07](https://openairdocs.org/ad/2025-02-07): Navigation · Modification of Rockwell Collins, Inc. Multi-Mode Receiver (STC ST01883WI or 4 others). Effective Mar 17, 2025
- [AD 2024-23-11](https://openairdocs.org/ad/2024-23-11): Flight controls · Boeing 737-8, 737-9 and 737-8200. Effective Jan 6, 2025
- [AD 2024-19-06](https://openairdocs.org/ad/2024-19-06): Ice/Rain Protection System · Boeing 737-8 and 737-9. Effective Nov 26, 2024
- [AD 2024-13-02](https://openairdocs.org/ad/2024-13-02): Oxygen · Boeing 737-8, 737-9, 737-8200 and 3 more. Effective Jul 25, 2024
- [AD 2024-06-03](https://openairdocs.org/ad/2024-06-03): Electrical Power · Boeing 737-8 and 737-9. Effective May 22, 2024
- [AD 2024-03-04](https://openairdocs.org/ad/2024-03-04): Flight controls · Boeing 737-8, 737-9 and 737-8200. Effective Feb 12, 2024
- [AD 2024-02-51](https://openairdocs.org/ad/2024-02-51): Doors · Boeing 737-9. Effective Jan 18, 2024
- [AD 2023-15-05](https://openairdocs.org/ad/2023-15-05): Ice and Rain Protection, Powerplant · Boeing 737-8, 737-9 and 737-8200. Effective Aug 25, 2023
- [AD 2023-12-11](https://openairdocs.org/ad/2023-12-11): Navigation · Boeing 737-8, 737-9 and 737-8200. Effective Jun 21, 2023
- [AD 2023-10-02](https://openairdocs.org/ad/2023-10-02): Indicating/Recording System, Navigation · Boeing 18, 23, 35 and 1,060 more. Effective May 26, 2023
- [AD 2023-05-06](https://openairdocs.org/ad/2023-05-06): Fuel · Boeing 737-8, 737-9 and 737-8200. Effective May 10, 2023
- [AD 2023-04-17](https://openairdocs.org/ad/2023-04-17): Fuel · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 5 more. Effective May 1, 2023
- [AD 2023-06-10](https://openairdocs.org/ad/2023-06-10): Ice and Rain Protection, Powerplant · Boeing 737-8, 737-8200 and 737-9. Effective Apr 11, 2023
- [AD 2022-24-09](https://openairdocs.org/ad/2022-24-09): Air conditioning · Boeing 737-100 Series, 737-200 Series, 737-200C Series and 12 more. Effective Jan 26, 2023
- [AD 2022-06-06](https://openairdocs.org/ad/2022-06-06): Flight controls · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 5 more. Effective Jun 16, 2022
- [AD 2021-19-19](https://openairdocs.org/ad/2021-19-19): Wings · Boeing 737-9. Effective Dec 8, 2021
- [AD 2021-13-18](https://openairdocs.org/ad/2021-13-18): Powerplant · Boeing 737-8, 737-8200 and 737-9. Effective Sep 3, 2021
- [AD 2021-16-15](https://openairdocs.org/ad/2021-16-15): Air conditioning · Boeing 737-8, 737-800 Series, 737-8200 and 2 more. Effective Aug 9, 2021
- [AD 2021-12-13](https://openairdocs.org/ad/2021-12-13): Fuel · Boeing 737-8 and 737-9. Effective Jul 29, 2021
- [AD 2021-10-07](https://openairdocs.org/ad/2021-10-07): Autoflight, Flight controls · Boeing 737-8 and 737-9. Effective Jul 8, 2021
- [AD 2021-08-04](https://openairdocs.org/ad/2021-08-04): Oxygen · Boeing 737-200 Series, 737-300 Series, 737-400 Series and 23 more. Effective May 26, 2021
- [AD 2021-09-08](https://openairdocs.org/ad/2021-09-08): Electrical power system · Boeing 737-8 and 737-9. Effective Apr 30, 2021
- [AD 2021-01-04](https://openairdocs.org/ad/2021-01-04): Doors · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 5 more. Effective Mar 29, 2021
- [AD 2020-24-02](https://openairdocs.org/ad/2020-24-02): Auto flight, Flight controls, and Indicating/recording systems · Boeing 737-8 and 737-9. Effective Nov 20, 2020
- [AD 2020-21-02](https://openairdocs.org/ad/2020-21-02): Fire protection · Airbus Canada Limited Partnership BD-500-1A10, BD-500-1A11, A330-201 and 45 more. Effective Nov 19, 2020
- [AD 2020-11-12](https://openairdocs.org/ad/2020-11-12): Nacelles/pylons · Boeing 737-8 and 737-9. Effective Jul 30, 2020
- [AD 2020-14-09](https://openairdocs.org/ad/2020-14-09): Fuel storage · Boeing 737-8 and 737-9. Effective Jul 15, 2020
- [AD 2020-03-10](https://openairdocs.org/ad/2020-03-10): Fuselage · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 5 more. Effective Mar 27, 2020
- [AD 2019-18-03](https://openairdocs.org/ad/2019-18-03): Exhaust · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 5 more. Effective Oct 3, 2019
- [AD 2019-14-12](https://openairdocs.org/ad/2019-14-12): Flight Controls · Boeing 737-8 and 737-9. Effective Aug 30, 2019
- [AD 2019-14-02](https://openairdocs.org/ad/2019-14-02): Hydraulic power · Boeing 737-100 Series, 737-200 Series, 737-200C Series and 11 more. Effective Aug 27, 2019
- [AD 2018-23-12](https://openairdocs.org/ad/2018-23-12): Equipment/furnishings · Airbus A300 B2-1A, A300 B2-1C, A300 B2-203 and 180 more. Effective Dec 28, 2018
- [AD 2018-20-13](https://openairdocs.org/ad/2018-20-13): Fuel · Boeing 757-200 Series, 757-200CB Series, 757-200PF Series and 13 more. Effective Nov 15, 2018

### Matched by engine (CFM International LEAP-1B28 series)

- [AD 2025-14-08](https://openairdocs.org/ad/2025-14-08): Turbine Section · CFM International LEAP-1B21, LEAP-1B23, LEAP-1B25 and 8 more. Effective Aug 25, 2025
- [AD 2025-04-12](https://openairdocs.org/ad/2025-04-12): Turbine Section · CFM International LEAP-1A23, LEAP-1A24, LEAP-1A24E1 and 24 more. Effective Apr 8, 2025
- [AD 2024-25-02](https://openairdocs.org/ad/2024-25-02): Turbine Engine Compressor Section · CFM International LEAP-1B21, LEAP-1B23, LEAP-1B25 and 8 more. Effective Feb 12, 2025
- [AD 2023-07-11](https://openairdocs.org/ad/2023-07-11): Turbine Engine Compressor Section · CFM International LEAP-1B21, LEAP-1B23, LEAP-1B25 and 8 more. Effective Jun 13, 2023
- [AD 2022-17-02](https://openairdocs.org/ad/2022-17-02): Turbine Engine Accessory Drive · CFM International LEAP-1B21, LEAP-1B23, LEAP-1B25 and 8 more. Effective Oct 20, 2022
- [AD 2022-11-02](https://openairdocs.org/ad/2022-11-02): Turbine Engine Compressor Section, Turbine Section · CFM International LEAP-1B21, LEAP-1B23, LEAP-1B25 and 8 more. Effective Jul 8, 2022
- [AD 2021-10-06](https://openairdocs.org/ad/2021-10-06): Engine Controls · CFM International LEAP-1B21, LEAP-1B23, LEAP-1B25 and 8 more. Effective May 10, 2021
- [AD 2020-06-01](https://openairdocs.org/ad/2020-06-01): Turbine/Turboprop · CFM International LEAP-1B21, LEAP-1B23, LEAP-1B25 and 8 more. Effective Apr 16, 2020
- [AD 2018-20-01](https://openairdocs.org/ad/2018-20-01): Turbine Section · CFM International LEAP-1B21, LEAP-1B23, LEAP-1B25 and 8 more. Effective Dec 17, 2018

### Historical (superseded or no longer in force)

- [AD 2026-13-05](https://openairdocs.org/ad/2026-13-05) (historical): Air conditioning · Boeing 737-8, 737-9 and 737-8200. Effective Jul 16, 2026
- [AD 2026-04-05](https://openairdocs.org/ad/2026-04-05) (historical): Electrical Power · Boeing 737-8, 737-9 and 737-8200. Effective Feb 24, 2026
- [AD 2023-09-04](https://openairdocs.org/ad/2023-09-04) (historical): Equipment/furnishings · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 5 more. Effective Jun 29, 2023
- [AD 2022-03-20](https://openairdocs.org/ad/2022-03-20) (historical): Navigation · Boeing 737-8, 737-9 and 737-8200. Effective Jan 31, 2022
- [AD 2021-14-20](https://openairdocs.org/ad/2021-14-20) (historical): Cabin Altitude Pressure Switches · Boeing 737-100 Series, 737-200 Series, 737-200C Series and 12 more. Effective Jul 20, 2021
- [AD 2020-03-20](https://openairdocs.org/ad/2020-03-20) (historical): Navigation · Modification of Rockwell Collins, Inc. Multi-Mode Receiver (STC ST01883WI or 4 others). Effective Feb 18, 2020
- [AD 2018-23-51](https://openairdocs.org/ad/2018-23-51) (historical): Flight controls · Boeing 737-8 and 737-9. Effective Dec 21, 2018
- [AD 2023-23-12](https://openairdocs.org/ad/2023-23-12) (historical): Turbine Section · CFM International LEAP-1B21, LEAP-1B23, LEAP-1B25 and 8 more. Effective Jan 16, 2024
- [AD 2019-12-01](https://openairdocs.org/ad/2019-12-01) (historical): Turbine Engine Accessory Drive · CFM International LEAP-1B21, LEAP-1B23, LEAP-1B25 and 8 more. Effective Jul 3, 2019
- [AD 2018-25-09](https://openairdocs.org/ad/2018-25-09) (historical): Engine Controls · CFM International LEAP-1B21, LEAP-1B23, LEAP-1B25 and 8 more. Effective Dec 26, 2018

## Information bulletins (advisory) (4 in force)

- [SAIB 2026-17](https://openairdocs.org/saib/2026-17): VNAV Approach Disconnect Following Missed Approach, Anomaly on Airplanes with FMC U14.0/14.1. Issued Oct 3, 2026
- [SAIB NM-20-02](https://openairdocs.org/saib/NM-20-02): Fire Protection. Issued Mar 11, 2020
- [SAIB NE-19-03](https://openairdocs.org/saib/NE-19-03): Escape Slide Maintenance Tasks and Intervals - JASC 2565. Issued Feb 19, 2019
- [SAIB NM-18-33](https://openairdocs.org/saib/NM-18-33): Engine Fuel and Control. Issued Dec 17, 2018

## NTSB investigations

None matched to N924AK.

## FAA accident and incident reports

None matched to N924AK.

## Service difficulty reports (58, newest 50)

As reported by operators and repair stations. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

- [SDR ASAA2026022464529](https://openairdocs.org/sdr/ASAA2026022464529), Feb 24, 2026: ELEC CONNECTOR. DISCONNECTED. WHILE PERFORMING T/C 32-010-00, FOUND EMERGENCY LIGHT OVERHEAD OF ROW 1 INOPERATIVE. GROUNDED - YES. FOUND EMERGENCY AISLE LIGHT CONNECTOR DISCONNECTED, PERFORM
- [SDR ASAA2025091160821](https://openairdocs.org/sdr/ASAA2025091160821), Sep 11, 2025: SEAT TRACK. DAMAGED. CAPTAIN'S SEAT TRACK DOES NOT MEET REQUIREMENTS OF CONDITION 2 PER TASK 25-11-01 SUBTASK 25-11-01-210-002(B): LOCK HOLE EXCEEDS MAXIMUM DIAMETER. GROUNDED - YES
- [SDR ASAA2025091160820](https://openairdocs.org/sdr/ASAA2025091160820), Sep 11, 2025: SEAT TRACK. DAMAGED. FIRST OFFICER'S SEAT TRACK DOES NOT MEET REQUIREMENTS OF CONDITION 2 PER TASK 25-11-01 SUBTASK 25-11-01-210-002(B): LOCK HOLE EXCEEDS MAXIMUM DIAMETER. GROUNDED
- [SDR ASAA2025091160818](https://openairdocs.org/sdr/ASAA2025091160818), Sep 11, 2025: SEAT TRACK. DAMAGED. CAPTAINS SEAT TRACK DOES NOT MEET REQUIREMENTS OF CONDITION 2 PER TASK 25-11-01 SUBTASK 25-11-01210-002(B): LOCK HOLE EXCEEDS MAXIMUM DIAMETER. USED GUAGE-IPECO
- [SDR ASAA2025070359244](https://openairdocs.org/sdr/ASAA2025070359244), Jul 3, 2025: GLOWSTRIP. DETACHED. FA REPORTED PHOTOLUMINESCENT STRIP IN FRONT OF LAV D AND G HAVE COME UP. THE STRIP HAS BEEN PLACED IN THE FWD CABIN CLOSET AT FIRST CLASS FOR SAFE KEEPING. GROU
- [SDR ASAA2023111046119](https://openairdocs.org/sdr/ASAA2023111046119), Nov 10, 2023: UNKNOWN. UNKNOWN. WHEN ATTEMPTING APU START. FAULT LIGHT ILLUMINATES. GROUNDED - YES. (RESOLVED ON W/O: 1974686 TASKCARD: N/R-00002 ) APU OPS CHECKS NORMAL REF AMM 49-11-00-710-8
- [SDR ASAA2023110546046](https://openairdocs.org/sdr/ASAA2023110546046), Nov 5, 2023: UNKNOWN. UNKNOWN. DUAL FMC FAILURE IN FLIGHT AT 36,000 OVER CYBL. BOTH FMC RETURNED TO NORMAL WITHIN 5 SECONDS WITH NO PILOT INPUT. GROUNDED - YES. PERFORMED IFIM TASK 31-65-00-8
- [SDR ASAA2023110446023](https://openairdocs.org/sdr/ASAA2023110446023), Nov 4, 2023: WIRE HARNESS. DAMAGED. #1 ENG GEN FELL OFFLINE DURING TAXI OUT. COULD NOT RE ESTABLISH #1 ENG GEN ONLINE. GROUNDED - YES. (RESOLVED ON W/O: 1975781 TASKCARD: N/R-00005 ) REFERENCE WDM
- [SDR ASAA2023110245976](https://openairdocs.org/sdr/ASAA2023110245976), Nov 2, 2023: CONTACTOR. FAULTY. #1 ENGINE GEN TRIPPED DUTING TAXI NO VOLTS NO AMPS INDICATED. GROUNDED - YES. (RESOLVED ON W/O: 1975555 TASKCARD: N/R-00002 ) FOLLOWED IFIM 24-21-00-810-820. AL
- [SDR ASAA2023103145954](https://openairdocs.org/sdr/ASAA2023103145954), Oct 31, 2023: UNKNOWN. UNKNOWN. ON RECALL "MACH TRIM FAIL" RESETS WITH MASTER CAUTION RESET. GROUNDED - YES. DURING TROUBLESHOOTING FOUND C/B C4 AFCS SYSTEM A MACH TRIM AC AT P18.1 POPPED RESE
- [SDR ASAA2023102945899](https://openairdocs.org/sdr/ASAA2023102945899), Oct 29, 2023: GCU. MALFUNCTIONED. AFTER STARTING #1 ENGINE THE #1 GEN WOULD NOT COME ONLINE. NO POWER INDICATED. GROUNDED - YES. (RESOLVED ON W/O: 1975036 TASKCARD: N/R-00002 ) REVERSED MEL 24-1
- [SDR ASAA2023101945761](https://openairdocs.org/sdr/ASAA2023101945761), Oct 19, 2023: IDG. FAULTY. AFTER ENGINE START, #1 ENGINE DRIVEN GENERATOR WOULD NOT COME ON LINE. WHEN SWITCHED WAS MOVED, GEN 1 SHOWED 399 CPS FREQ. BUT NO AC AMP LOAD. AC VOLTS SHOWED 1
- [SDR ASAA2023101345644](https://openairdocs.org/sdr/ASAA2023101345644), Oct 13, 2023: UNKNOWN. UNKNOWN. #1 GEN WOULD NOT TAKE LOAD. GROUNDED - YES. (RESOLVED ON W/O: 1973305 TASKCARD: N/R-00002 ) REF WDM 24-22-11 PERFORMED RESISTANCE CHECK OF GEN 1 CONTROL SWITCH 
- [SDR ASAA2023091445158](https://openairdocs.org/sdr/ASAA2023091445158), Sep 14, 2023: UNKNOWN. UNKNOWN. USED WING ANTI-ICE ON ARRIVAL UP IN 20-30K ALTITUDE. SWITCH ON L VALVE AMBER LIGHT ON. GROUNDED - YES. NO HISTORY 60 DAYS. C/W TASK 30-11-200-801 LEFT WING ANTI
- [SDR ASAA2023090945043](https://openairdocs.org/sdr/ASAA2023090945043), Sep 9, 2023: UNKNOWN. UNKNOWN. AT EXP PERFORMED CROSSFEED VALVE CHECK & DID NOT GET CORRECT INDICATION OF OPEN POSITION. ( NO LIGHT BLUE LIGHT) ATTEMPTED 2ND TRY TO SHOW F.O. STILL NOT CORREC
- [SDR ASAA2023082744805](https://openairdocs.org/sdr/ASAA2023082744805), Aug 27, 2023: UNKNOWN. UNKNOWN. MAINT LIGHT ON- OVERHEAD. GROUNDED - YES. STATUS MSG IS "ENG 1 INGNITER R" "ENG 1 IGNITER L". ACCOMPLISHED B737-9 IFIM TASK G74-20-00-810-801. TEST 18 AND 19 PA
- [SDR ASAA2023081244565](https://openairdocs.org/sdr/ASAA2023081244565), Aug 12, 2023: UNKNOWN. UNKNOWN. IN CRUISE AT FL 350 OBSERVED DUAL FMC FAILURE WITH BOTH MCDUS ON MENU PAGE WITH FMC LINE BLANK, BLANKING OF NAV DISPLAYS, BOTH VTK ILUMINATED. FMC'S SELF RECOVE
- [SDR ASAA2023071344140](https://openairdocs.org/sdr/ASAA2023071344140), Jul 13, 2023: MODULATING VALVE. FAULTY. TECH SERVICES REQUEST FOR FOLLOW-UP TO MTX LIGHT & FAULT(RIGHT FAMV FAULT 36-12021)----(#PRI1)----ETOPS SIGNIFICANT SYSTEM----. GROUNDED - YES. (RESOLVED ON W/O
- [SDR ASAA2023071344010](https://openairdocs.org/sdr/ASAA2023071344010), Jul 13, 2023: UNKNOWN. UNKNOWN. MAINT CAUTION LIGHT ILLUMINATED ON LANDING. GROUNDED - YES. EXISTING FD EFFECT PG SHOWS MSG 36-12021 ACTIVE FOR #2 ENG. REF IFIM TASK 36-12-00-810-802, PERFORME
- [SDR ASAA2023062743793](https://openairdocs.org/sdr/ASAA2023062743793), Jun 27, 2023: UNKNOWN. UNKNOWN. WHILE PERFORMING T/C 31-005-00, FOUND SMT MESSAGE "BLEED FAMV RVDT R". GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023060743499](https://openairdocs.org/sdr/ASAA2023060743499), Jun 7, 2023: FMC. FAILED. ENROUTE TO ANCHORAGE THE LEFT FMC FAILED. OPERATED THE REMAINDER OF THE FLIGHT ON THE RIGHT FMC. GROUNDED - YES. REMOVED AND REPLACED THE LEFT FLIGHT MANAGEMENT
- [SDR ASAA2023053043411](https://openairdocs.org/sdr/ASAA2023053043411), May 30, 2023: UNKNOWN. UNKNOWN. SATCOM LOCK-UP GROUNDED - YES. ACCOMPLISHED "SATCOM LOCK-UP" QRH PROCEDURE.
- [SDR ASAA2023052843385](https://openairdocs.org/sdr/ASAA2023052843385), May 28, 2023: UNKNOWN. UNKNOWN. APU FAULT LIGHT ON FIRST START ATTEMPT ON TAXI IN, WAITED 5 MINUTES, FAULT CLEARED, SUCCESSFUL START ON ATTEMPT #2. GROUNDED - YES. PERFORMED TROUBLESHOOTING & 
- [SDR ASAA2023050843189](https://openairdocs.org/sdr/ASAA2023050843189), May 8, 2023: UNKNOWN. UNKNOWN. SATCOM LOCKUP GROUNDED - YES. SATCOM LOCKUP PROCEDURE ACCOMPLISHED IN CONJUNCTION WITH CPDLC BLOCKED LIST PROCEDURE.
- [SDR ASAA2023041542890](https://openairdocs.org/sdr/ASAA2023041542890), Apr 15, 2023: CONTROL UNIT. FAULTY. RH SIDE WINDOW HEAT OVERHEAT ILLUMINATED. GROUNDED - YES. REMOVED AND REPLACED WHCU CONTROLLER FOR RH SIDE WINDOW REF B737-9 AMM 30-41-11.
- [SDR ASAA2023041542889](https://openairdocs.org/sdr/ASAA2023041542889), Apr 15, 2023: UNKNOWN. UNKNOWN. RIGHT SIDE WINDOW HEAT "OVERHEAT" LIGHT ILLUMINATED GROUNDED - YES. RAN QRH. AFTER 5 MINUTES, TURNED SWITCH BACK ON. OPS NORMAL.
- [SDR ASAA2023040942766](https://openairdocs.org/sdr/ASAA2023040942766), Apr 9, 2023: UNKNOWN. UNKNOWN. LEFT WING ANTI--ICE L VALVE ILLUMINATED UPON ACTUATION OF WING ANT--ICE. GROUNDED - YES. ACCOMPLISHED LEFT WING ANTI-ICE VALVE HEALTH CHECK. NO DEFECTS NOTED AN
- [SDR ASAA2023032742615](https://openairdocs.org/sdr/ASAA2023032742615), Mar 27, 2023: UNKNOWN. UNKNOWN. SATCOM LOCKUP. GROUNDED - YES. ACCOMPLISHED RESET PROCEDURE PER QRH, SUCCESSFUL.
- [SDR ASAA2023031342346](https://openairdocs.org/sdr/ASAA2023031342346), Mar 13, 2023: UNKNOWN. UNKNOWN. CPDLC LOGIN FAILURE - ATC BLOCKED - DISPATCH NOTIFIED. GROUNDED - YES. SATCOM LOCKUP RESET PROCEDURE QRH PERFORMED, PER BULLETIN LOCK-UP.
- [SDR ASAA2023022842118](https://openairdocs.org/sdr/ASAA2023022842118), Feb 28, 2023: NONE. FAULTY. CPDLC WORKS FOR DCL BUT WILL NOT STAY LOGGED ONTO KUSA ENROUTE, FOLLOWED FLIGHT OPERATIONS BULLETIN RESET PROCEDURE WITHOUT SUCCESS. GROUNDED - YES. OMF SHOWS F
- [SDR ASAA2022120941097](https://openairdocs.org/sdr/ASAA2022120941097), Dec 9, 2022: HEATER. INOPERATIVE. TEMP PROBE LIGHT CAME ON AFTER START. GROUNDED - YES. R/R TEMP PROBE IAW B737-9 AMM 34-21-06. OPS CHECK GOOD.
- [SDR ASAA2022112340933](https://openairdocs.org/sdr/ASAA2022112340933), Nov 23, 2022: CONNECTOR. DISCONNECTED. REF T/C 33-010-00 FOUND FWD GALLEY CEILING EMERGENCY SIGN DOES NOT ILLUMINATE. GROUNDED - YES. FOUND EMERGENCY EXIT SIGN CONNECTOR DISCONNECTED. RESECURED AND O
- [SDR ASAA2022103140563](https://openairdocs.org/sdr/ASAA2022103140563), Oct 31, 2022: ANTI-ICE VALVE. MALFUNCTIONED. REPEAT PROBLEM WING ANTI ICE LEFT VALVE LT ILLUMINATED WHEN SWITCH ON OR OFF. GROUNDED - YES. REMOVED AND REPLACED L/H WING ANTI ICE VALVE IN REF TO B737-9 AMM 
- [SDR ASAA2022103040549](https://openairdocs.org/sdr/ASAA2022103040549), Oct 30, 2022: PRESSURE SWITCH. FAULTY. APU WAS STARTING AND PUT ON BUS TAXIING IN THEN AUTO SHUTDOWN. GROUNDED - YES. REMOVED AND REPLACED APU LOW OIL PRESSURE SWITCH IAW B737-9 AMM 49-94-22.
- [SDR ASAA2022092940125](https://openairdocs.org/sdr/ASAA2022092940125), Sep 29, 2022: ANTI-ICE SYSTEM. WARNING LIGHT. BOTH L&R WING ANTI-ICE AMBER LIGHT ILLUMINATE WHEN SWITCH IS PLACED ON. AMBER MASTER CAUTION LIGHT ILLUMINATES. ALL AMBER LIGHTS EXTINGUISH WHEN WING ANTI-ICE S
- [SDR ASAA2022091339945](https://openairdocs.org/sdr/ASAA2022091339945), Sep 13, 2022: PROCESSOR. FAILED. SOLID RADAR SHADOW RETURN (IN BOTH AUTO AND MANUAL MODE) ALTERNATING IN EITHER THE 11 OCLOCK FOR 2 OCLOCK POSITION. LONG SLIM "PIZZA SLICE" FROM THE AIRCRAFT SY
- [SDR ASAA2022081739549](https://openairdocs.org/sdr/ASAA2022081739549), Aug 17, 2022: MCU. FAULTED. CAPTAIN'S MCDU LOCKED ON "MENU" SCREEN. GROUNDED - YES. PERFORMED MULTIPLE GOOD OPS TESTS OF L/H MCDU PER B737-9 AMM 34-61-01-400-802.
- [SDR ASAA2022073139304](https://openairdocs.org/sdr/ASAA2022073139304), Jul 31, 2022: VALVE. FAULTY. ON LANDING ROLL THE "MAINT" LIGHT ON THE OVERHEAD PANEL ILLUMINATED. THE STATUS PAGE HAS THE MESSAGE BLEED FAMV R. GROUNDED - YES. REMOVED AND REPLACED FAMV REF
- [SDR ASAA2022073139289](https://openairdocs.org/sdr/ASAA2022073139289), Jul 31, 2022: OVERHEAT. FALSE INDICATION. ON GROUND IN SEATTLE WINDOW HEAT R - SIDE OVERHEAT LIGHT ILLUMINATED. GROUNDED - YES. RAN QRH - LIGHT EXTINGUISHED AND STAYED EXTINGUISHED.
- [SDR ASAA2022062538807](https://openairdocs.org/sdr/ASAA2022062538807), Jun 25, 2022: FMC. FAILED. LEFT FMC FAILED (VTK) @ FL 350 M.78 FOR 20 SEC. REMAINDER OF FLIGHT LEFT FMC OPERATED OK. GROUNDED - YES. RESET C/B #1 FMC, #2 FMC. COMP & DSPY. IAW B737-9 FIM 
- [SDR ASAA2022061738696](https://openairdocs.org/sdr/ASAA2022061738696), Jun 17, 2022: FMC. FAULT MESSAGE. FMC DISAGREE ANNUNCIATOR DISPLAYED ON ND. GROUNDED - YES. PERFORMED B737-9 IFIM 34-61-00-810-918 & FMC DISAGREE MSG EXTINGUISHED.
- [SDR ASAA2022060138526](https://openairdocs.org/sdr/ASAA2022060138526), Jun 1, 2022: FMC. INTERMITTENT. RIGHT FMC FAILED (VTK) AT ALTITUDE (37000) MACH .790 30 SECONDS VTK DISAPPEARED RT FMC OPERATED 4.0 FOR REMAINDER OF FLIGHT. GROUNDED - YES. CYCLED BOTH FMC BRE
- [SDR ASAA2022052338433](https://openairdocs.org/sdr/ASAA2022052338433), May 23, 2022: VALVE. FAULTY. UPON LANDING OVERHEAD MAINT LIGHT ILLUMINATED. GROUNDED - YES. FOUND FAULT CODE 36-12021 (ENG-2 FAMV NOT IN COMMAND POSITION). REMOVED AND REPLACED #2 ENG FAMV 
- [SDR ASAA2022052338426](https://openairdocs.org/sdr/ASAA2022052338426), May 23, 2022: PNEUMATIC SYSTEM. FAULT MESSAGE. MAINT LIGHT ON OVERHEAD CAME ON AFTER LANDING. GROUNDED - YES. RAN ON BOARD DIAGNOSTICS FOUND MX MSG 36-12021, PERFORMED TEST PER B737-9 AMM TASK 36-00-00730-80
- [SDR ASAA2022051538325](https://openairdocs.org/sdr/ASAA2022051538325), May 15, 2022: EXCITER. FAILED. #1 ENGINE WOULD NOT START. 2 ATTEMPTS. ALL INDICATIONS INDICATED NORMAL EXCEPT NO EGT RISE AFTER START LEVER RAISED TO IDLE. IGNITION SOURCE (RT). GROUNDED - YE
- [SDR ASAA2022050938246](https://openairdocs.org/sdr/ASAA2022050938246), May 9, 2022: ENGINE. VIBRATION. NON SYNCHRONOUS VIBRATION ON THE #1 ENGINE GROUNDED - YES. REMOVED AND REPLACED #1 ENGINE.
- [SDR ASAA2022050438208](https://openairdocs.org/sdr/ASAA2022050438208), May 4, 2022: FMC. FAULT MESSAGE. 'INFO ONLY' 'FMC DISAGREE' MESSAGE DISPLAYED ON BOTH NAV DISPLAYS AFTER RAMP REMOVED POWER FROM AIRCRAFT. GROUNDED - YES. COMPLETED FMC DISAGREE QRH. PROBLEM RE
- [SDR ASAA2022031737705](https://openairdocs.org/sdr/ASAA2022031737705), Mar 17, 2022: UNKNOWN. UNKNOWN. SINGLE FMC MESSAGE AND FMC DISAGREE MESSAGE. GROUNDED - YES. RT FMC SHOWED FAILED. BUT FMC WAS RESTORED + RT FMC OPS TEST NORMAL REF B737-9 AMM 34-61-00-710-801
- [SDR ASAA2022031037672](https://openairdocs.org/sdr/ASAA2022031037672), Mar 10, 2022: UNKNOWN. UNKNOWN. R1 WINDOW OVERHEAT ILLUMINATED ON GROUND. ACCOMPLISHED QRH, RESOLVED OVERHEAT. GROUNDED - YES. ACCOMPLISHED WINDOW HEAT CONTROL UNIT SYSTEM TEST REF B737-9 AMM 
- [SDR ASAA2022022337543](https://openairdocs.org/sdr/ASAA2022022337543), Feb 23, 2022: UNKNOWN. UNKNOWN. DUAL FMC FAILURE ENROUTE (NOT ASSOCIATED W/LOADING ARCH PRIOR TO DESCENT WIND UPLINK). RESET ON ITS OWN AFTER APPROX 30 SECONDS. INDICATIONS: "VTK" ON CA ND, BO

All 58: https://openairdocs.org/aircraft/N924AK/reports.md

## STCs that may be installed (OpenAirDocs) (105, first 50)

Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do.

### Approved for the airframe (Boeing 737-9)

- [STC ST03438NY](https://openairdocs.org/stc/ST03438NY): Installation of Adams Rite Lavatory Equipment. Delta Engineering Corporation
- [STC ST04669CH](https://openairdocs.org/stc/ST04669CH): Installation of Honeywell Advanced Communications and Entertainment System (ACES). Honeywell Aerospace
- [STC ST09941AC](https://openairdocs.org/stc/ST09941AC): Installation of a Gables SATVOICE Annunciator Panel. L2 Aviation
- [STC ST02269NY](https://openairdocs.org/stc/ST02269NY): Installation of Self Illuminating Floor Path Marking System. Lufthansa Technik AG
- [STC ST00885LA](https://openairdocs.org/stc/ST00885LA): Installation of fire extinguisher cartridges as replacements for Pacific Scientific fire extinguisher cartridges in fire extinguisher bottles. AMETEK AMERON, LLC d/b/a MASS Systems
- [STC ST12443LA](https://openairdocs.org/stc/ST12443LA): Installation of Teledyne Controls Edge Computing Platform (ECP). Teledyne Controls, LLC
- [STC ST04474NY](https://openairdocs.org/stc/ST04474NY): Activation of Wireless Local Area Network (WLAN) system. Jet Aviation AG
- [STC ST04254NY](https://openairdocs.org/stc/ST04254NY): Installation of Viasat Satcom Software. ALOFT AeroArchitects
- [STC ST09927AC](https://openairdocs.org/stc/ST09927AC): Installation of a Gables Audio Management System. L2 Aviation
- [STC ST12005SE](https://openairdocs.org/stc/ST12005SE): Installation of Starlink Aviation System. Space Exploration Technologies Corp./Starlink Aviation
- [STC ST04040CH](https://openairdocs.org/stc/ST04040CH): Activation of Smart Runway and Smart Landing (SRSL) Runway Awareness Advisory System (RAAS) Functions for Honeywell Mark V and Mark V-A Enhanced Ground Proximity Warning Systems (EGPWS). Honeywell International Inc
- [STC ST00555AT](https://openairdocs.org/stc/ST00555AT): Installation of Airshow 210 system. AIRCRAFT RECONFIG TECHNOLOGIES, LLC. Lists 737 Series
- [STC ST04384AT](https://openairdocs.org/stc/ST04384AT): Interior reconfiguration installation. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST00952LA](https://openairdocs.org/stc/ST00952LA): Installation of Mass Systems fire extinguisher cartridges as replacements for Kidde fire extinguisher cartridges in fire extinguisher bottles. AMETEK AMERON LLC d/b/a MASS Systems
- [STC ST04328NY](https://openairdocs.org/stc/ST04328NY): The Manufacture and Installation of Exterior Placards, Labels and Signs is to be performed, installed. Libellule Monde Inc
- [STC ST03405NY](https://openairdocs.org/stc/ST03405NY): Installation (with demod option) of an Connectivity Antenna. Delta Engineering Corporation
- [STC ST04758NY](https://openairdocs.org/stc/ST04758NY): Installation of single cockpit USB charger. Eirtech Aviation Services Inc
- [STC ST09844DS](https://openairdocs.org/stc/ST09844DS): This project installs a new Next-IS media server and installation provisions to interface with the Starlink IFC system. United Airlines
- [STC ST04052NY](https://openairdocs.org/stc/ST04052NY): ViaSat KA Cabin Distribution System Installation. ALOFT AeroArchitects
- [STC ST02908NY](https://openairdocs.org/stc/ST02908NY): Installation of a Panasonic Avionics Corporation Global Communications Suite (GCS) and/or In-Flight Entertainment (IFE). Delta Engineering Corporation
- [STC ST04051NY](https://openairdocs.org/stc/ST04051NY): ViaSat KA SATCOM Antenna System Installation. ALOFT AeroArchitects
- [STC ST00030IB](https://openairdocs.org/stc/ST00030IB): Installation of Test Tech ELT. APTOZ EHF
- [STC ST03885AT](https://openairdocs.org/stc/ST03885AT): Installation of an Avionica, Inc. avCM Cellular Module. Aircraft Systems and Manufacturing Inc
- [STC ST12102IB](https://openairdocs.org/stc/ST12102IB): Installation of a Honeywell Aspire 400 SBB Satcom and/or an AMT-3800 high gain antenna. Jet Aviation AG
- [STC ST12059IB](https://openairdocs.org/stc/ST12059IB): Installation of Seat to Floor Interface - isotropic intercostals for installation of seats and divans. JET AVIATION AG
- [STC ST04243NY](https://openairdocs.org/stc/ST04243NY): Installation of the ALOFT AeroArchitects Auxiliary Fuel System (AFS). ALOFT AeroArchitects
- [STC ST04368AT](https://openairdocs.org/stc/ST04368AT): Installation of a Rockwell Collins CMU-900 ACARS/CPDLC Communication Management Unit P/N 822-1239-151 to provide Data Link communications via existing data link capable VHF Mode 2 (VDLM2), HF and/or SATCOM systems and host the CPDLC application which support EASA Link 2000+ communications. LB Aircraft Engineering Inc
- [STC ST00079IB](https://openairdocs.org/stc/ST00079IB): Integration of Halon-free Portable Fire Extinguisher HAFEX. UMLAUT ENGINEERING GMBH
- [STC ST00215IB](https://openairdocs.org/stc/ST00215IB): Installation of saf-Tglo ECO Photoluminescent Aisle Path Marking Systems. STG AEROSPACE GERMANY GmbH
- [STC ST01936WI](https://openairdocs.org/stc/ST01936WI): Installation of LED lights. AeroLED's Holdings LLC
- [STC ST09830DS](https://openairdocs.org/stc/ST09830DS): AVOD Integration on Boeing B737-9 fleet. United Airlines
- [STC ST04585AT](https://openairdocs.org/stc/ST04585AT): Installation of a Cobham AVIATOR 200S Inmarsat / Swift Broadband Satellite Communications System. Avionics Support Group
- [STC ST04071NY](https://openairdocs.org/stc/ST04071NY): Installation of VisionSafe Emergency Vision Assurance System (EVAS). VisionSafe LLC
- [STC ST03952NY](https://openairdocs.org/stc/ST03952NY): Installation of Controller-Pilot Data-Link communications. 365 Aerospace Ltd Aerospace Logistics Centre
- [STC ST03403NY](https://openairdocs.org/stc/ST03403NY): Installation of a Intelsat Cabin Connectivity (with demod option) system. Delta Engineering Corporation
- [STC ST04493AT](https://openairdocs.org/stc/ST04493AT): Interior Reconfiguration (Carpet Installation). ZIM Aircraft Cabin Solutions LLC
- [STC ST00161IB](https://openairdocs.org/stc/ST00161IB): Installation of a DK180 Underwater Locator Device (ULD) using Dukane mounting bracket. Fokker Services B.V
- [STC ST00158IB](https://openairdocs.org/stc/ST00158IB): Installation of Tablet Cradle, consisting of the installation of 2 arm mounts on the existing sliding windows (both sides, Captain and First Officer). PMV Engineering
- [STC ST04203AT](https://openairdocs.org/stc/ST04203AT): Installation of a Constant Friction Mount , Cradle, and Integrated Power Supply. Avionics Support Group Inc
- [STC ST11386DS](https://openairdocs.org/stc/ST11386DS): Installation of USB Charging Hubs on the Flight Deck. Aircraft Systems and Manufacturing Inc
- [STC ST00792NY](https://openairdocs.org/stc/ST00792NY): Installation of evacuation slide and compartment assemblies. Air Cruisers
- [STC ST00126IB](https://openairdocs.org/stc/ST00126IB): Replacement of Halon agent with alternate Halon-free Portable Fire Extinguisher agent. AMAC Aerospace Switzerland AG
- [STC ST00140IB](https://openairdocs.org/stc/ST00140IB): Installation of Potable Water Pre-Select system. International Water-Guard Industries Inc
- [STC ST04664NY](https://openairdocs.org/stc/ST04664NY): Activation of Wireless Local Area Network (WLAN) system. AMAC Aerospace AG
- [STC ST00121IB](https://openairdocs.org/stc/ST00121IB): Installation of photoluminescent floor path marking with the option to install LED lighting. Cobalt Aerospace Limited
- [STC ST04562NY](https://openairdocs.org/stc/ST04562NY): Installation of saf-Tglo® SuperSeal UltraLite-X (SSUL-X) Photoluminescent Floor Proximity Emergency Escape Path Marking Systems. STG AEROSPACE GERMANY GmbH
- [STC ST00105IB](https://openairdocs.org/stc/ST00105IB): Introduction of Activation of Wireless Charging Systems for Portable Electronic Devices. AMAC AEROSPACE SWITZERLAND AG
- [STC ST04594CH](https://openairdocs.org/stc/ST04594CH): Installation of a Viasat Cellular Data Modem (VCDM). Envoy Aerospace LLC
- [STC ST02747SE](https://openairdocs.org/stc/ST02747SE): Remove existing two (2) Branding Panels from forward monuments and install new two (2) Jamco Branding Panels on Boeing Model 737-9 aircraft. Jamco America, Inc
- [STC SA00787SE](https://openairdocs.org/stc/SA00787SE): Installation of Sliding Carpet Cargo Loading System in the cargo compartment. SBC-America LLC

All 105: https://openairdocs.org/aircraft/N924AK/stcs.md

## Related

- Other Boeing 737-9 aircraft: https://openairdocs.org/model/boeing-737-9/aircraft.md
- The CFM International LEAP-1B28 series engine: https://openairdocs.org/engine/cfm-international-leap-1b28-series.md

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OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.