# N971AK: 2019 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: 43339
- Year built: 2019
- Type: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: November 11, 2021
- Certificate issued: January 25, 2022
- Expires: January 31, 2029
- Mode S code: AD8766
- Registered owner: [Alaska Airlines Inc](https://openairdocs.org/faa-owner/ALASKA%20AIRLINES%20INC)
- Location: [Seattle, WA](https://openairdocs.org/faa-place/WA/Seattle)
- 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=971AK
- Page: https://openairdocs.org/aircraft/N971AK

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 N971AK.

## FAA accident and incident reports

None matched to N971AK.

## Service difficulty reports (39)

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 ASAA2025040757164](https://openairdocs.org/sdr/ASAA2025040757164), Apr 7, 2025: TRIM PANEL. OUT OF POSITION. WHILE ATTEMPTING TO CLOSE L-1 DOOR, TRIM PIECES ARE SNAGGING, UNABLE TO CLOSE DOOR FULLY RE-OPENED DOOR, TRIED AGAIN - SAME. GROUNDED - YES. CLOSED DOOR WITH IN
- [SDR ASAA2025021255950](https://openairdocs.org/sdr/ASAA2025021255950), Feb 12, 2025: LIGHT. MISSING. AIRCRAFT LEFT SIDE ROW 12 ESCAPE PATH LIGHTING MISSING. GROUNDED - YES. REPLACED PHOTOLUMINESCENT STRIP REF AMM 33-51-15.
- [SDR ASAA2025011855421](https://openairdocs.org/sdr/ASAA2025011855421), Jan 18, 2025: LAMP. INOPERATIVE. L1 SLIDE EXTERIOR EMERGENCY LIGHT INOP. GROUNDED - YES. RELAMPED L1 SLIDE EXTERIOR LIGHT REF AMM 33-51-04 ALL GND TESTS PASSED.
- [SDR ASAA2024081251742](https://openairdocs.org/sdr/ASAA2024081251742), Aug 12, 2024: LIGHT. INOPERATIVE. FA REPORTS EMERGENCY LIGHT/ GLOW STRIPS IN FIRST CLASS ONLY AREA ARE DISCOLORED PURPLE AND NO LONGER GLOW. GROUNDED - YES. REMOVED AND REPLACED FIRST CLASS R/H 
- [SDR ASAA2024041149043](https://openairdocs.org/sdr/ASAA2024041149043), Apr 11, 2024: LAMP. INOPERATIVE. R1 DOOR EMERGENCY SLIDE DOOR LIGHT INOP. GROUNDED - YES. REMOVED AND REPLACED R1 DOOR EMERGENCY LIGHT LAMP REF AMM 33-51-04. OPC GOOD.
- [SDR ASAA2023110646045](https://openairdocs.org/sdr/ASAA2023110646045), Nov 6, 2023: UNKNOWN. UNKNOWN. FLIGHT CREW REPORTS ON PREFLIGHT, MAINT LIGHT ILLUMINATING. GROUNDED - YES. MDS STATUS INDICATES ENG 1 CONTROL W/ A CORRESPONDING, NOT-ACTIVE MESSAGE OF 73-4270
- [SDR ASAA2023110346012](https://openairdocs.org/sdr/ASAA2023110346012), Nov 3, 2023: UNKNOWN. UNKNOWN. FOUND OPEN C/B - PACK CONT VALVES L ALT LOCATED AT P6-4 D3. GROUNDED - YES. INSPECTED & RESET PACK CONT VALVES L ALT PER AMM 20-60-01. C/B REMAINS RE-SET. ACCOM
- [SDR ASAA2023110145986](https://openairdocs.org/sdr/ASAA2023110145986), Nov 1, 2023: UNKNOWN. UNKNOWN. APU "FAULT" LIGHT ON GRND START. FAULT CODE 49-41254 (MAINTENANCE CODE) STARTER CONVERTER UNIT SHOWS START SYSTEM INOP. GROUNDED - YES. PERFORMED APU BITE - FOU
- [SDR ASAA2023102145771](https://openairdocs.org/sdr/ASAA2023102145771), Oct 21, 2023: UNKNOWN. UNKNOWN. FOUND LATCH FAULT #1 ENG EEC C1. GROUNDED - YES. NO CORRELATE FAULTS NOTED. CLEARED LATCHED MSG. C/W B737-9 IFIM TASK G73-20-00-810-855. ENG IDLE TEST PASSED. N
- [SDR ASAA2023101645687](https://openairdocs.org/sdr/ASAA2023101645687), Oct 16, 2023: UNKNOWN. UNKNOWN. MOMENTARY LEFT VTK MSG AP DISCONNECTED AT FL 330, REVERTED TO CWS SYSTEM RESOLVED ITSELF. GROUNDED - YES. PERFORMED B737-9 IFIM 31-00-00-810-803. FOUND NO ACTIV
- [SDR ASAA2023091645156](https://openairdocs.org/sdr/ASAA2023091645156), Sep 16, 2023: UNKNOWN. UNKNOWN. AT FL 350 WITH 1400 LBS IN CENTER TANK AND A DECK ANGLE OF 2.5 DEGREES WINGS LEVEL WITH SMOOTH RIDE LEFT CENTER PUMP LOW PRESS LIGHT ILLUMINATED WITH PUMP IN ON
- [SDR ASAA2023090644963](https://openairdocs.org/sdr/ASAA2023090644963), Sep 6, 2023: UNKNOWN. UNKNOWN. WXR FAIL IN FLIGHT. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023090344915](https://openairdocs.org/sdr/ASAA2023090344915), Sep 3, 2023: UNKNOWN. UNKNOWN. FLIGHT CREW REPORTS VTK FLAG ON PILOT SIDE. GROUNDED - YES. FOUND INTERMITTENT FAULT MESSAGE 34-69001. CYCLED FMC 1 CB AND NO DEFECTS NOTED REF IFIM 34-61-00-81
- [SDR ASAA2023082544799](https://openairdocs.org/sdr/ASAA2023082544799), Aug 25, 2023: UNKNOWN. UNKNOWN. WHILE FULLFILLING TASKCARD #05-020-01, PRESENT LEG FAULTS, FOUND ENGINE #1 SHOWS ECONOMIC FAULT #77-41632, "EGT PROBE 3 VALUE DOES NOT AGREE WITH THE AVERAGE OF
- [SDR ASAA2023081144546](https://openairdocs.org/sdr/ASAA2023081144546), Aug 11, 2023: UNKNOWN. UNKNOWN. HF1 FAIL. GROUNDED - YES. (RESOLVED ON W/O: 1964848 TASKCARD: N/R-00001 ) PERFORMED HF #1 SYSTEM TEST GOOD, OPS TEST PASSED & VOICE TEST IS SATISFACTORY AMM 23-
- [SDR ASAA2023080344398](https://openairdocs.org/sdr/ASAA2023080344398), Aug 3, 2023: UNKNOWN. UNKNOWN. FMC DISAGREE LT ON BOTH PFD'S. GROUNDED - YES. FMC DISAGREE NO LONGER PRESENT, FMC OPS NORMAL REF IFIM 34-61-00-810-918, NO HISTORY PAST 30 DAYS.
- [SDR ASAA2023071043966](https://openairdocs.org/sdr/ASAA2023071043966), Jul 10, 2023: UNKNOWN. UNKNOWN. WHILE PERFORMING TASK CARD 05-020-01 FOUND NO. 2 ENG EEC ECONOMIC FAULT 77-41634 "EGT PROBE 3 VALVE DOES NOT AGREE". GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023062743759](https://openairdocs.org/sdr/ASAA2023062743759), Jun 27, 2023: MOTOR. FAULTY. LEFT CENTER PUMP LOW PRESSURE LIGHT ILLUMINATED WHEN TURNED ON AT CRUISE ALT. GROUNDED - YES. REVERSED CONFIGURATION CHANGES OF MEL 28-22-02A, CONFIRMED CIRCUIT
- [SDR ASAA2023061943808](https://openairdocs.org/sdr/ASAA2023061943808), Jun 19, 2023: NOZZLE. COKED. GE DIAGNOSTICS REPORTS #2 ENGINE (SN 602613) TREND DATA SHOWS EXCESS COKING OF THE FUEL NOZZLE MAIN ORIFICES. (FULL SET FUEL NOZZLE REPLACEMENT 737MAX T/C 73-AS
- [SDR ASAA2023061943638](https://openairdocs.org/sdr/ASAA2023061943638), Jun 19, 2023: LENS. DETACHED. FA REPORTS THAT THE LENS COVER ( EXIT SIGN ) ON L1 DOOR HAS FALLEN OFF. GROUNDED - YES. REPLACED EXIT SIGN LENS BY L1 DOOR.
- [SDR ASAA2023060443688](https://openairdocs.org/sdr/ASAA2023060443688), Jun 4, 2023: UNKNOWN. UNKNOWN. ON ENGINE #1 CRACK FOUND IN ABRADABLE SHROUD AT 9 O'CLOCK POSTION. GROUNDED - YES. ON DEFERRAL. CRACK FOUND TO BE WITHIN DEFERRABLE LIMITS A/C RELEASED FOR SERV
- [SDR ASAA2023053043412](https://openairdocs.org/sdr/ASAA2023053043412), May 30, 2023: UNKNOWN. UNKNOWN. WEATHER RADAR FAILED. WXR FAIL FLAG AND PWS FAIL FLAG. GROUNDED - YES. OMF SHOWS MAINTENANCE MESSAGE 34-43101 AND 34-43107 LOGGED ON PREVIOUS FLIGHT LEG. ACCOMP
- [SDR ASAA2023040442720](https://openairdocs.org/sdr/ASAA2023040442720), Apr 4, 2023: EXCITER. FAULTY. ENG # 2 WOULD NOT START W/IGN SWITCH SET TO IGN R. GROUNDED - YES. REMOVED AND REPLACED RH IGNITION EXCITER IAW B737-9 AMM 74-11-01.
- [SDR ASAA2023032042432](https://openairdocs.org/sdr/ASAA2023032042432), Mar 20, 2023: UNKNOWN. UNKNOWN. LEFT SIDE WINDOW HEAT CAUTION ILLUMINATED ON TAXI - IN. QRH PROCEDURE ACCOMPLISHED WITH NORMAL OPS AFTER RESET. GROUNDED - YES. PERFORMED WINDOW HEAT SYSTEM OPS
- [SDR ASAA2023022842121](https://openairdocs.org/sdr/ASAA2023022842121), Feb 28, 2023: UNKNOWN. UNKNOWN. MID CABIN OVERHEAD EXIT DROPPED FROM CEILING. GROUNDED - YES. SECURED EMERGENCY EXIT LIGHT TO CEILING PANEL AS REQUIRED OPS CK GOOD.
- [SDR ASAA2023022542082](https://openairdocs.org/sdr/ASAA2023022542082), Feb 25, 2023: UNKNOWN. UNKNOWN. RIGHT SIDE WINDOW OVERHEAT LIGHT ILLUMINATED. GROUNDED - YES. RAN QRH ON GROUND FOR RIGHT SIDE WINDOW OVERHEAT, LIGHT EXTINGUISHED.
- [SDR ASAA2023022442073](https://openairdocs.org/sdr/ASAA2023022442073), Feb 24, 2023: UNKNOWN. UNKNOWN. RIGHT SIDE WINDOW OVERHEAT LIGHT ILLUMINATED ON GROUND. GROUNDED - YES. RAN QRH ON THE GROUND FOR R SIDE WINDOW OVERHEAT LIGHT. REMAINED EXTINGUISHED.
- [SDR ASAA2023022242039](https://openairdocs.org/sdr/ASAA2023022242039), Feb 22, 2023: UNKNOWN. UNKNOWN. FMC DISAGREE DISPLAYED ON BOTH ND'S. GROUNDED - YES. ACCOMPLISHED B737-9 IFIM 34-61-00-810-918. FMCS RESTORED. OPS CHECK GOOD. GROUND VERIFICATION TESTS GOOD.
- [SDR ASAA2023012741708](https://openairdocs.org/sdr/ASAA2023012741708), Jan 27, 2023: VALVE. LOCKED. MAINT LIGHT ILLUMINATED AFTER LANDING. GROUNDED - YES. FOUND ACTIVE FAULT 36-12021 "ENGINE 2 FAMV IS NOT IN COMMAND POSITION". REMOVED AND REPLACED THE FAMV PER
- [SDR ASAA2022122741296](https://openairdocs.org/sdr/ASAA2022122741296), Dec 27, 2022: FMC. FAULTED. DURING PREFLIGHT FMC DISAGREE DISPLAYED ON BOTH ND DISPLAYS. GROUNDED - YES. RESET FMC ON CDU PER B737-9 IFIM 34-61-00-810-918.
- [SDR ASAA2022122041196](https://openairdocs.org/sdr/ASAA2022122041196), Dec 20, 2022: FMS. FALSE INDICATION. FMC DISAGREE MESSAGE. GROUNDED - YES. PERFORMED B737-9 IFIM 34-61-00-810-918, FMC'S RETURNED TO NORMAL, NO FAULTS, GRD VERIFICATION SUCCESSFUL.
- [SDR ASAA2022120841091](https://openairdocs.org/sdr/ASAA2022120841091), Dec 8, 2022: ANTI-ICE VALVE. WARNING LIGHT. #2 ENGINE ANTI-ICE COWL VALVE LIGHT ILLUMINATED WITH ANTI-ICE SWITCH ON. GROUNDED - YES. PERFORMED ENGINE ANTI-ICE SYSTEM OPERATIONAL TEST WITH ENGINE IDLE RUN.
- [SDR ASAA2022092140010](https://openairdocs.org/sdr/ASAA2022092140010), Sep 21, 2022: FMC. FAILED. CAPTAIN FMC FAILED FOR AROUND 1 MINUTE. GROUNDED - YES. FMC RESTORED ITSELF. NO CURRENT FAULT.
- [SDR ASAA2022081239490](https://openairdocs.org/sdr/ASAA2022081239490), Aug 12, 2022: SATCOM. INOPERATIVE. NO SATCOM ON FMC. GROUNDED - YES. REMOVED AND REPLACED SATCOM SDU PER B737-9 AMM 23-15-01.
- [SDR ASAA2022070738998](https://openairdocs.org/sdr/ASAA2022070738998), Jul 7, 2022: GEARBOX. WORN. FOUND DAMAGE ON MATING SURFACE OF TRANSFER G/B SLIDER WHILE ACCOMPLISHING SBLEAP-1B-72-0317-BS7-1 #1 ENGINE. GROUNDED - YES. FOUND DAMAGE ON EDGE FLANGE PART IS
- [SDR ASAA2022041337979](https://openairdocs.org/sdr/ASAA2022041337979), Apr 13, 2022: FMC. FAULTY. 2 PLUS 40 INTO FLIGHT AT FL340 BOTH FMC'S FAILED CRUISE FL340 FOR 30-45 SECONDS. THEY BOTH RE-BOOTED WITHOUT ANY PILOT INTERACTION AND OPERATED NORMALLY. GROUND
- [SDR ASAA2022032737942](https://openairdocs.org/sdr/ASAA2022032737942), Mar 27, 2022: NONE. NONE. WHILE PERFORMING T/C #05-020-01, #1 ENG HAS FAULT CODE 73-41992 FUEL COOLED OIL COOLER (FCOC) DELTA PRESSURE SENSOR IS OUT OF RANGE, ENG 1 EEC C2, PRESENT IN SM
- [SDR ASAA2022032337755](https://openairdocs.org/sdr/ASAA2022032337755), Mar 23, 2022: FMC. ABNORMAL. ENROUTE AT FL 360, BOTH FMC'S WENT BLANK FOR ABOUT 20 SEC. VTK APPEARED ON LEFT NAV DISPLAY. MENU PAGE DID NOT HAVE FMC DISPLAYED. AFTER ABOUT 20 SEC FMC PROMPT
- [SDR ASAA2022032337749](https://openairdocs.org/sdr/ASAA2022032337749), Mar 23, 2022: UNKNOWN. UNKNOWN. ON TOUCHDOWN MAINT ON OVERHEAD PANEL ILLUMINATED. GROUNDED - YES. LAST LEG STATUS MESSAGE 21-6515 "CONTROL CABIN TRIM AIR VALVE SIGNAL OUT OF RANGE". PERF B737-

## 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/N971AK/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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