# N920AK: 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: 44086
- Year built: 2021
- Type: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: September 14, 2021
- Certificate issued: September 20, 2021
- Expires: September 30, 2028
- Mode S code: ACBE34
- Registered owner: [Alaska Airlines Inc](https://openairdocs.org/faa-owner/ALASKA%20AIRLINES%20INC)
- Location: [Seatac, WA](https://openairdocs.org/faa-place/WA/Seatac)
- Owner type: Corporation
- Owner's area on the map: 47.4466° N, 122.2721° W: Placed by OpenAirDocs at the center of ZIP code 98188, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=920AK
- Page: https://openairdocs.org/aircraft/N920AK

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 N920AK.

## FAA accident and incident reports

None matched to N920AK.

## Service difficulty reports (70, 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 ASAA2026081067916](https://openairdocs.org/sdr/ASAA2026081067916), Aug 10, 2026: BATTERY PACK. FAILED. AFT LEFT EMERGENCY LIGHT FAILED FUNCTIONAL CHECK. GROUNDED - YES. REPLACED M1673 BATTERY POWER SUPPLY REF BOEING AMM TASK 33-51-06-960-802. OP TEST GOOD WITH AF
- [SDR ASAA2025091560909](https://openairdocs.org/sdr/ASAA2025091560909), Sep 15, 2025: LENS. MISSING. EMERGENCY EXIT SIGN MISSING ROW 16. GROUNDED - YES. REPLACED MISSING EMERGENCY EXIT ROW LENS COVER AT ROW 16ABC IN REF TO AMM 33-51-01.
- [SDR ASAA2024101453165](https://openairdocs.org/sdr/ASAA2024101453165), Oct 14, 2024: COVER. DETACHED. DURING PRE CHECK FOUND ROW 17 L/H EMERGENCY EXIT SIGN COVER OFF. GROUNDED - YES. REINSTALLED ROW 17 L/H EMERGENCY EXIT SIGN COVER PER AMM 33-51-01-960-802. OPS 
- [SDR ASAA2024071151083](https://openairdocs.org/sdr/ASAA2024071151083), Jul 11, 2024: SIGN. INOPERATIVE. G1 GALLEY EMERGENCY EXIT SIGN IS INOP. GROUNDED - YES. REMOVED AND REPLACED G1 GALLEY EMERGENCY EXIT LIGHT CONTACT IAW B737-MAX BSWPM 20-30-12. REMOVED AND REIN
- [SDR ASAA2024040448893](https://openairdocs.org/sdr/ASAA2024040448893), Apr 4, 2024: LIGHT. DETACHED. FA REPORTS PL LIGHTING STRIP AROUND ROW 1 LEFT SIDE LIFTING. GROUNDED - YES. REPLACED DAMAGED SEGMENT OF FLOOR PL LIGHT. REF AMM 33-51-15 OPS CHECK GOOD.
- [SDR ASAA2023111246139](https://openairdocs.org/sdr/ASAA2023111246139), Nov 12, 2023: UNKNOWN. UNKNOWN. PRIOR TO DEPARTURE. LEFT FWD WINDOW OVERHEAT CAME ON. GROUNDED - YES. RAN QRH LIGHT WENT OUT.
- [SDR ASAA2023100645513](https://openairdocs.org/sdr/ASAA2023100645513), Oct 6, 2023: UNKNOWN. UNKNOWN. AT CRUISE FL 360 HAD A/P DISCONT & "VTK" DISPLAYED CA PFD. ROUTE DATA WAS REMOVED AT APPROX 20' SEC DATA RESTORED "VTK" REMOVED FROM PFD - NORMAL OPERATION REST
- [SDR ASAA2023092345278](https://openairdocs.org/sdr/ASAA2023092345278), Sep 23, 2023: UNKNOWN. UNKNOWN. #1 ENGINE RIGHT IDG AIR OIL HEAT EXCHANGER BENT FINS. GROUNDED - YES. FOUND 3 BENT FINS ON #1 ENG RIGHT IDG AIR OIL HEAT EXCHANGER. BENT THE 3 FINS BACK TO WITH
- [SDR ASAA2023092145266](https://openairdocs.org/sdr/ASAA2023092145266), Sep 21, 2023: WIRE HARNESS. DAMAGED. WHILE T/S L/P 60683921 FOUND HPSOV CONNECTOR DP202 CONTACTING R/H T/R BLANKET. GROUNDED - YES. CONNECTOR DP202 DAMAGE BEYOND LIMIT. INIT MIG-2C #40-0054749 & 40
- [SDR ASAA2023092145264](https://openairdocs.org/sdr/ASAA2023092145264), Sep 21, 2023: PRESSURE VALVE. DAMAGED. WHILE T/S LP 60683921, FOUND HPSOV CONTACTING R/H T/R BLANKET. GROUNDED - YES. REMOVED THE #1 ENG HPSOV, REF AMM 36-11-07-000-801. J RAMIREZ 48859 09/21/2023. I
- [SDR ASAA2023092145253](https://openairdocs.org/sdr/ASAA2023092145253), Sep 21, 2023: SENSOR. FAULTED. AFTER ENGINE START AND BEGING OF TAXI #1 ENGINE CONTROL ILLUMINATED. AFTER FOLLOWING THE CHECKLIST THAT HAD NO ACTION ITEMS THE LIGHT HAD EXTINGUISHED AND DID N
- [SDR ASAA2023091745163](https://openairdocs.org/sdr/ASAA2023091745163), Sep 17, 2023: UNKNOWN. UNKNOWN. FMC DISAGREE ILLUMINATED ON A/C ARRIVAL. GROUNDED - YES. FMC DISAGREE QRH PERFORMED. FMC DISAGREE EXTINGUISHED.
- [SDR ASAA2023090444953](https://openairdocs.org/sdr/ASAA2023090444953), Sep 4, 2023: FILTER. DIRTY. WHILE ACCOMPLISHING APU LOAD COMPRESOR DRAIN INSP FOUND DELTA P EXTENDE ON OIL FILTER. GROUNDED - YES. ACCOMPLISHED AMM 49-91-13-200-801 AND AMM 49-91-13-600-80
- [SDR ASAA2023082844813](https://openairdocs.org/sdr/ASAA2023082844813), Aug 28, 2023: UNKNOWN. UNKNOWN. AFTER LANDING/DURING TAXI INJ - R2 WINDOW OVERHEAT ANNUNCIATOR ILLUMINATED. GROUNDED - YES. ON DEFERRAL. REF L/P 60570414
- [SDR ASAA2023082844812](https://openairdocs.org/sdr/ASAA2023082844812), Aug 28, 2023: UNKNOWN. UNKNOWN. DURING CLIMB OUT - PASSING FL310. R2 WINDOW OVERHEAT ANNUNCIATED ILLUMINATED. COMPLETED W/ QRH PROCEDURE LET WINDOW COOL FOR 5 MINS. OPERATION NORMAL AFTERWARDS
- [SDR ASAA2023082144725](https://openairdocs.org/sdr/ASAA2023082144725), Aug 21, 2023: UNKNOWN. UNKNOWN. R2 WINDOW OVER HEAT ILLUMINATED IN DESCENT. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023082044706](https://openairdocs.org/sdr/ASAA2023082044706), Aug 20, 2023: UNKNOWN. UNKNOWN. RT SIDE WINDOW OVERHEAT LIGHT ILLUMINATED ON APPROACH.CONDITIONS WERE IMC , AND NOT IN ICING CONDITIONS,BUTWELL BELOW THE TEMP WHERE A WINDOW SHOULD OVER HEAT. 
- [SDR ASAA2023082044705](https://openairdocs.org/sdr/ASAA2023082044705), Aug 20, 2023: UNKNOWN. UNKNOWN. RIGHT SIDE WINDOW OVERHEAT LIGHT CAME ON AFTER LANDING. GROUNDED - YES. QRH FOLLOWED, LIGHT OUT.
- [SDR ASAA2023081644625](https://openairdocs.org/sdr/ASAA2023081644625), Aug 16, 2023: UNKNOWN. UNKNOWN. WHILE ACCOMPLISHING T/C 31-005-00 FOUNT SMT MESSAGE BLEED CTRL CARD L. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023081644624](https://openairdocs.org/sdr/ASAA2023081644624), Aug 16, 2023: UNKNOWN. UNKNOWN. WHILE ACCOMPLISHING T/C 31-005-00 FOUND SMT MESSAGE PACK CONTROL CHANNEL R. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023081444610](https://openairdocs.org/sdr/ASAA2023081444610), Aug 14, 2023: UNKNOWN. UNKNOWN. R SIDE WINDOW HEAT OVERHEAT CAUTION ILLUM QRH DID NOT RESOLVE CONDITION. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023081444601](https://openairdocs.org/sdr/ASAA2023081444601), Aug 14, 2023: CONTROLLER. FAULTY. ON APPROACH & LANDING & TAXI IN LEFT DUCT PRESSURE SWUNG BETWEEN 0 AND 65 PSI MULTIPLE TIMES UNTIL ENGINE SHUTDOWN. GROUNDED - YES. REMOVED AND REPLACED L IASC 
- [SDR ASAA2023081244550](https://openairdocs.org/sdr/ASAA2023081244550), Aug 12, 2023: UNKNOWN. UNKNOWN. WHILE ACCOMPLISHING TASK 05-020-01 FOUND ENG 1 EEC C2 SCH MAINT MSG. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023080644433](https://openairdocs.org/sdr/ASAA2023080644433), Aug 6, 2023: UNKNOWN. UNKNOWN. DURING T/C 31-005-00 FOUND SCHEDULED MAINT TASK BLEED FAMV RVDT R. GROUNDED - YES. (RESOLVED ON W/O: 1964519 TASKCARD: N/R-00003 ) FOUND MX MSG: 36-12031 ENGINE
- [SDR ASAA2023080544482](https://openairdocs.org/sdr/ASAA2023080544482), Aug 5, 2023: UNKNOWN. UNKNOWN. PWS & WXR FAILED DURING FLIGHT. GROUNDED - YES. PERFORMED WEATHER RADAR OPERATIONAL TEST AND WEATHER RADAR SYSTEM TEST ALL SYSTEMS CHECKED GOOD IAW B737-9 AMM 3
- [SDR ASAA2023072744282](https://openairdocs.org/sdr/ASAA2023072744282), Jul 27, 2023: MODULATING VALVE. FAULTY. ON PDC FOUND MAINT. LIGHT ILLUMINATED AND BLEED FAMV R FAULT MSG ON STATUS PAGE. GROUNDED - YES. REMOVED AND REPLACED FAN AIR MODULATION VALVE REF AMM 36-12-03/
- [SDR ASAA2023072644251](https://openairdocs.org/sdr/ASAA2023072644251), Jul 26, 2023: UNKNOWN. UNKNOWN. SPEED TRIM FAIL LIGHT ILLUMINATED, SINGLE CHANNEL. GROUNDED - YES. DFCS TEST FOUND FAULT MSG 22-11186 ON LAST FLT LEG AMM 22-11-00, PERFORMED IFIM 22-11-00-810-
- [SDR ASAA2023072344167](https://openairdocs.org/sdr/ASAA2023072344167), Jul 23, 2023: UNKNOWN. UNKNOWN. WHILE PERFORMING , T/C 31-005-00 W/O 1962050. FOUND "ENG 1 EEC C2" MSG ON SCHEDULE MAINTENANCE TASK DISPLAY SYSTEM. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023072344158](https://openairdocs.org/sdr/ASAA2023072344158), Jul 23, 2023: UNKNOWN. UNKNOWN. WHILE PERFORMING T/C 31-005-00 FOUND LONG TIME FAULT "ENG 2 EEC C2" ON SCHEDULED MAINTENANCE TASK DISPLAY SYSTEM. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023070843919](https://openairdocs.org/sdr/ASAA2023070843919), Jul 8, 2023: UNKNOWN. UNKNOWN. FA REPORTS LITTLE TO NO AIRFLOW FROM PASSENGER VENTS IN ROW 6-15. ROWS 16 AND BACK AIR FLOW IS NORMAL. AT CRUISE LEFT AND RIGHT DUCT PRESSURE WAS 37 PSI. FWD CA
- [SDR ASAA2023061543623](https://openairdocs.org/sdr/ASAA2023061543623), Jun 15, 2023: CONVERTER. FAULTY. AFTER LANDING, APU WOULD NOT START AFTER 2 ATTEMPTS. GROUNDED - YES. DURING INITIAL EVALUATION FOUND ACTIVE FAULT 49-41254, REF B737-9 IFIM TASK 49-40-00-810-81
- [SDR ASAA2023061043534](https://openairdocs.org/sdr/ASAA2023061043534), Jun 10, 2023: EXCITER. INOPERATIVE. APU FAILED TO START. FAULT LIGHT AND LOW OIL PRESSURE LIGHT ARE ON. GROUNDED - YES. HAD MAINTENANCE MESSAGE " NO FLAME SHUTDOWN". PERFORMED B737-9 IFIM 49-40-00
- [SDR ASAA2023040642752](https://openairdocs.org/sdr/ASAA2023040642752), Apr 6, 2023: VALVE. FAULTY. OVERHEAD MANIT LIGHT ILLUMINATED UPON LANDING. GROUNDED - YES. STATUS SHOWS BLEED FAMV L. REMOVED AND REPLACED #1 ENG FAMV PER B737-9 AMM 36-12-03-400-801.
- [SDR ASAA2023040142672](https://openairdocs.org/sdr/ASAA2023040142672), Apr 1, 2023: UNKNOWN. UNKNOWN. FMC DISAGREE DURING PRE-FLIGHT. GROUNDED - YES. PERFORMED FMC DISAGREE QRH PROCEDURE: PROCEDURE SUCCESSFUL. REF B737-9 IFIM 34-61-00-810-918.
- [SDR ASAA2023031242324](https://openairdocs.org/sdr/ASAA2023031242324), Mar 12, 2023: UNKNOWN. UNKNOWN. FMC FAILED TO INITIATE. GROUNDED - YES. PERFORMED FMC RESET REF B737-9 AMM 34-61-00. OPS CHECK NORMAL.
- [SDR ASAA2023030542189](https://openairdocs.org/sdr/ASAA2023030542189), Mar 5, 2023: UNKNOWN. UNKNOWN. PILOT REPORTS MAINT LIGHT ON. GROUNDED - YES. INTERROGATED OMF, FOUND MAINT MESSAGE 21-65151 FOR CONT CAB TRIM VALVE SIGNAL OUT OF RANGE OR NOT IN COMMANDED POS
- [SDR ASAA2023022442091](https://openairdocs.org/sdr/ASAA2023022442091), Feb 24, 2023: UNKNOWN. UNKNOWN. #1 ENGINE HUNG START N2 16.3 - 16.4 3 ATTEMPTS @ 3 MIN OF MOTORING. GROUNDED - YES. COMPLIED WITH B737-9 IFIM G71-00-00-810-868. FOUND LATCHED FAULT "ONBOARD MA
- [SDR ASAA2023020241773](https://openairdocs.org/sdr/ASAA2023020241773), Feb 2, 2023: NOT REPORTED. NOT REPORTED. WING ANTI-ICE L-VALVE LIGHT ILLUMINATED W/ ASSOCIATED MC DURING WING ANTI - ICE ON OPS. GROUNDED - YES. PERFORM L WING THERMAL ANTI-ICE CHECK REF. B737-9 AMM 30
- [SDR ASAA2022122841367](https://openairdocs.org/sdr/ASAA2022122841367), Dec 28, 2022: SENSOR. SCRATCHED. MAINT LIGHT ILLUMINATES ON ROLLOUT. GROUNDED - YES. PERFORMED B737-9 IFIM TASK G79-21-00-810-801. FOUND DEEP SCRATCH IN ODMS SENSOR. REMOVED & REPLACED ODMS SEN
- [SDR ASAA2022122741244](https://openairdocs.org/sdr/ASAA2022122741244), Dec 24, 2022: WARNING FLAG. FALSE INDICATION. IN FLIGHT HAD 20 SECOND VTAK & MAP FLAGS #1 SIDE, RESOLVED ON ITS OWN WITHOUT MOVING FMC SWITCH. GROUNDED - YES. PERFORMED RESET OF BOTH FMC COMPUTERS OPS CHECK
- [SDR ASAA2022120641084](https://openairdocs.org/sdr/ASAA2022120641084), Dec 6, 2022: COUPLER. DAMAGED. HF RADIO #2 WILL NOT TRANSMIT. GROUNDED - YES. REMOVED AND REPLACED NR 2 HF ANTENNA COUPLER IAW AMM 23-11-61-401.
- [SDR ASAA2022111240743](https://openairdocs.org/sdr/ASAA2022111240743), Nov 12, 2022: WARNING LIGHT. FALSE INDICATION. L2 WINDOW OVERHEAT LIGHT ILLUMINATED ON TAXI OUT. GROUNDED - YES. QRH COMPLETE, LIGHT REMAINS EXTINGUISHED.
- [SDR ASAA2022110740664](https://openairdocs.org/sdr/ASAA2022110740664), Nov 7, 2022: HF COMM. INOPERATIVE. HF2 WILL NOT TRANSMIT ON 5547, RECEIVE OK. GROUNDED - YES. C/W TASK B737-9 AMM 23-11-00-730-801, HF COMMUNICATION SYSTEM - SYSTEM TEST, COMM BETWEEN ANOTHER A/C
- [SDR ASAA2022110140558](https://openairdocs.org/sdr/ASAA2022110140558), Nov 1, 2022: WARNING LIGHT. FALSE ACTIVATION. ON MASTER CAUTION RECALL SPEED TRIM FAIL LIGHT ON OVHD PANEL. EXTINGUISHED WITH RESET. GROUNDED - YES. FOUND CHANNEL A FCC FAULT CODE 22-11186. ACCOMPLISHED B73
- [SDR ASAA2022091639978](https://openairdocs.org/sdr/ASAA2022091639978), Sep 16, 2022: FMC. FAULTED. FMC DISAGREE AFTER POWER DROPPED OFF IN ONT. GROUNDED - YES. PERFORMED ASA QRH PROCEDURE. OPS CHECK GOOD.
- [SDR ASAA2022090639826](https://openairdocs.org/sdr/ASAA2022090639826), Sep 6, 2022: PLATFORM. BROKEN. DURING WALKAROUND FOUND #1 ENGINE OGV PLATFORM AT 7:00 O CLOCK POSITION BROKEN. GROUNDED - YES. REMOVED AND REPLACED # 1 ENGINE OGV PLATFORM REF B737-9 AMM 72-2
- [SDR ASAA2022090339782](https://openairdocs.org/sdr/ASAA2022090339782), Sep 3, 2022: UNKNOWN. UNKNOWN. LEFT FWD WINDOW HEAT OVERHEAT LIGHT ILLUMINATED. GROUNDED - YES. EXTINGUISHED IMMEDIATELY UPON TURNING IT OFF AND DID NOT COME BACK ON FOR REMAINDER OF FLIGHT.
- [SDR ASAA2022073139324](https://openairdocs.org/sdr/ASAA2022073139324), Jul 31, 2022: UNKNOWN. UNKNOWN. WHILE ACCOMPLISHING T/C 31-005-00 FOUND "BLEED FAMV RVDT R" LATCHED. GROUNDED - YES. PERFORMED FILTER REPLACEMENT ON FAMV #2 ENGINE PER B737-9 AMM TASK 36-12-03
- [SDR ASAA2022062638852](https://openairdocs.org/sdr/ASAA2022062638852), Jun 26, 2022: RVDT. INTERMITTENT. WHILE ACCOMPLISHING T/C 31-005-00 FOUND FAULT "BLEED FAMV RVDT R" LATCHED. GROUNDED - YES. PERFORMED B737-9 IFIM 31-00-00-810-803, FOUND MX MSG 36-12031 "ENGINE
- [SDR ASAA2022060538584](https://openairdocs.org/sdr/ASAA2022060538584), Jun 5, 2022: ECU. FAILED. APU FAILS TO START - TWO ATEMPTS FAILED. GROUNDED - YES. INTERROGATED APU VIA OMF FOUND FAULT CODE MX MESSAGE 49-61144. ECU INTERNAL FAILURE. REMOVED AND REPLAC

All 70: https://openairdocs.org/aircraft/N920AK/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/N920AK/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

---
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.