# N918AK: 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: 44083
- Year built: 2021
- Type: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: February 16, 2021
- Certificate issued: April 21, 2021
- Expires: April 30, 2028
- Mode S code: ACB46D
- 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=918AK
- Page: https://openairdocs.org/aircraft/N918AK

From the FAA registry file of October 27, 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): 49 in force

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

- [AD 2026-21-07](https://openairdocs.org/ad/2026-21-07): Wings · Boeing 737-8, 737-9 and 737-8200. Effective Dec 1, 2026
- [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 N918AK.

## FAA accident and incident reports

None matched to N918AK.

## Service difficulty reports (66, 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 ASAA2026042165766](https://openairdocs.org/sdr/ASAA2026042165766), Apr 21, 2026: CHANNEL. CORRODED. FLOOR SIDEPLATE CHANNEL CORRODED. OUT OF SRM 53-00-53-1A-2 LIMITS GROUNDED - YES. REMOVED AND REPLACED ZEE CHANNEL REF BOEING DWG 146A7500 ID 225 AND 228
- [SDR ASAA2026042165765](https://openairdocs.org/sdr/ASAA2026042165765), Apr 21, 2026: CHANNEL. CORRODED. FLOOR SIDEPLATE CHANNEL CORRODED. OUT OF SRM 53-00-53-1A-2 LIMITS GROUNDED - YES. REMOVED AND REPLACED ZEE CHANNEL REF BOEING DWG 146A7500 ID 225 AND 228
- [SDR ASAA2026042165764](https://openairdocs.org/sdr/ASAA2026042165764), Apr 21, 2026: CHANNEL. CORRODED. FLOOR SIDEPLATE CHANNEL CORRODED. OUT OF SRM 53-00-53-1A-2 LIMITS. GROUNDED - YES. REMOVED AND REPLACED ZEE CHANNEL REF BOEING DWG 146A7500 ID 225 AND 228
- [SDR ASAA2026042065767](https://openairdocs.org/sdr/ASAA2026042065767), Apr 20, 2026: CHANNEL. CORRODED. FLOOR SIDEPLATE CHANNEL CORRODED AND PUNCTURED. OUT OF SRM 53-00-53-1A-2 LIMITS GROUNDED - YES. REMOVED AND REPLACED CHANNEL REF BOEING DWG 146A7500 ID 225 AND 
- [SDR ASAA2025122963464](https://openairdocs.org/sdr/ASAA2025122963464), Dec 29, 2025: BATTERY PACK. NO TEST. L2 DOOR EMERGENCY EXIT SIGN BATTERY PACK FAILS CAPACITY CHECK PER TC 33-055-00. GROUNDED - YES. REPLACED EMERGENCY LIGHT BATTERY PACK FOR L2 DOOR EMERGENCY EXIT
- [SDR ASAA2024100552984](https://openairdocs.org/sdr/ASAA2024100552984), Oct 5, 2024: SWITCH. MALFUNCTIONED. FA REPORTS OVERHEAD SIDEWALL LIGHT ABOVE OVERHEAD STORAGE BIN IN ROW 27ABC STILL ILLUMINATED WHITE. GROUNDED - YES. CONFIRMED, FINDING EMERGENCY EXIT AISLE LIGH
- [SDR ASAA2024100552982](https://openairdocs.org/sdr/ASAA2024100552982), Oct 5, 2024: LAMP. INOPERATIVE. TRANSFERRED FROM L/P 60937242: R1 EXTERIOR EMERGENCY EXIT SLIDE LIGHT INOP. GROUNDED - YES. RELAMPED R1 SLIDE/DOOR EMERGENCY EXIT LIGHT REF AMM 33-51-04. OPS CH
- [SDR ASAA2023101645692](https://openairdocs.org/sdr/ASAA2023101645692), Oct 16, 2023: UNKNOWN. UNKNOWN. ON SHUTDOWN OF #2 ENG, MAINTENANCE LIGHT CAME ON. STATUS MSG SHOWS #2 ENGINE CONTROL, CHECKED EXISTING FAULTS FOUND FAULT 71-09011 OMF HAS NO INPUT FROM ENGINE 
- [SDR ASAA2023101545622](https://openairdocs.org/sdr/ASAA2023101545622), Oct 15, 2023: FMU. FAILED. # 2 ENGINE VALVE CLOSE LIGHT REMAINED FULL BRIGHT AFTER #2 ENGINE SHUT DOWN, FOUND CORRELATED MESSAGE 73-42365 " FUEL METERING UNIT SHUTOFF VALVE IS FAILED OPEN
- [SDR ASAA2023101145645](https://openairdocs.org/sdr/ASAA2023101145645), Oct 11, 2023: REGULATOR VALVE. MALFUNCTIONED. 1 ENGINE ANTI ICE LIGHT IS ILLUMINATED. GROUNDED - YES. INTERGRATED OMF FAULT CODE 36-21010 SHOWING REF FIM 36-21-00-810-801 STATES TO REPLACE PRSOV REPLACED PR
- [SDR ASAA2023092845398](https://openairdocs.org/sdr/ASAA2023092845398), Sep 28, 2023: UNKNOWN. UNKNOWN. AMBER MAINT LIGHT ILLUMINATED. GROUNDED - YES. PERFORMED B737-9 IFIM TASK 31-65-00-750-801 FOUND APU OIL QTY LOW. INTERROGATED MX CTL PAGE RESET MX LIGHT EXTING
- [SDR ASAA2023091845189](https://openairdocs.org/sdr/ASAA2023091845189), Sep 18, 2023: UNKNOWN. UNKNOWN. RH R-2 WINDOW HEAT OVHT LIGHT CAME ON. ACCOMPLISHED QRH LIGHT ILLUMINATED. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023091645162](https://openairdocs.org/sdr/ASAA2023091645162), Sep 16, 2023: FMC. FAULTY. AT CRUSE MOMENTARLY DUEL FMC FAILURE. LAV/VNAV DISCONNECT. SYSTEM RECOVERED AFTER 10 SECONDS. QRM PROCEDURE PERFORMED. GROUNDED - YES. FOUND MAINTENACE FAULT MG
- [SDR ASAA2023091545161](https://openairdocs.org/sdr/ASAA2023091545161), Sep 15, 2023: UNKNOWN. UNKNOWN. TEMP DUAL FMC FAILURE DURING DESCENT INTO KOMA. IT LASTED ABOUT 7 - 10 SWC & THEN NORMAL OPS RESTORED FOR REMAINDER OF FLIGHT. GROUNDED - YES. PERFORMED FMC 1 &
- [SDR ASAA2023091245074](https://openairdocs.org/sdr/ASAA2023091245074), Sep 12, 2023: UNKNOWN. UNKNOWN. HF #1 WONT CLEAR THE CALL INDICATION. GROUNDED - YES. PERFORMED OPS CHECK ON #1 HF REF MM 23-11-00, HF #1 OK FOR SERVICE.
- [SDR ASAA2023091145076](https://openairdocs.org/sdr/ASAA2023091145076), Sep 11, 2023: SENSOR. MALFUNCTIONED. TEMP PROBE LIGHT ILLUMINATED. GROUNDED - YES. VERIFIED TEMP PROBE NOT HEATING. REPLACED TAT PROBE PER AMM 34-21-06-00-400-801. GROUND VERIFICATION GOOD. PER AMM
- [SDR ASAA2023091045041](https://openairdocs.org/sdr/ASAA2023091045041), Sep 10, 2023: UNKNOWN. UNKNOWN. ON ARRIVAL AT APPROX 10'000 MSL R SIDE WINDOW HEAT OVERHEAT LIGHT ILLUMINATED. RAN QRH AND LANDED. GROUNDED - YES. PERFORMED WINDOW HEAT OPS CK IAW B737-9 AMM 3
- [SDR ASAA2023082644787](https://openairdocs.org/sdr/ASAA2023082644787), Aug 26, 2023: UNKNOWN. UNKNOWN. #1 ENG ANTI-ICE FAULT LIGHT ILLUMINATED WHEN ENG ANTI-ICE SWITCHED ON IN FLIGHT. (ALTITUDE 9000' OAT 9C). GROUNDED - YES. PERFORM IFM TASK 36-21-00-810-801-801 
- [SDR ASAA2023082444788](https://openairdocs.org/sdr/ASAA2023082444788), Aug 24, 2023: PRESSURE VALVE. OUT OF RANGE. AERMETRIC REPORTING #1(LH)PRSOV(V189) FAULT 36-11040(PRSOV TORQUE MOTOR SIGNAL OUT OF RANGE)----(#PRI1)ETOPS SIGNIFICANT SYSTEM----. GROUNDED - YES. REMOVED AND
- [SDR ASAA2023081744676](https://openairdocs.org/sdr/ASAA2023081744676), Aug 17, 2023: UNKNOWN. UNKNOWN. RIGHT SIDE-WINDOW OVERHEAT OCCURRED DESCENDING THROUGH 10,000 FEET MSL TAT= +20C OAT= +12C. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023080544410](https://openairdocs.org/sdr/ASAA2023080544410), Aug 5, 2023: UNKNOWN. UNKNOWN. WINDOW OVERHEAT RIGHT SIDE GROUNDED - YES. FOLLOWED QRH DID NOT REMAIN ILLUMINATED.
- [SDR ASAA2023072644275](https://openairdocs.org/sdr/ASAA2023072644275), Jul 26, 2023: UNKNOWN. UNKNOWN. "WX FAIL" MESSAGE ON PFD. OCCASIONAL OK, BUT MOSTLY WX FAIL WHEN ATTEMPTING TO USE IN VARIOUS MODES. GROUNDED - YES. ACCOMPLISHED WEATHER RADAR OPS CHECKPER AMM
- [SDR ASAA2023072344148](https://openairdocs.org/sdr/ASAA2023072344148), Jul 23, 2023: UNKNOWN. UNKNOWN. PER T/C 31-005-00 FOUND LATCHED MESSAGE PACK CONTROL CHANNEL R. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023072044177](https://openairdocs.org/sdr/ASAA2023072044177), Jul 20, 2023: UNKNOWN. UNKNOWN. CA NAV DISPLAY SHOWED VTK WITH DUAL FMC FAILURE. BOTH FMC'S RECOVERED & VTK FLAG REEMOVED AFTER 30 SEC WITHOUT INTERVENTION. GROUNDED - YES. REBOOTED LT FMC - S
- [SDR ASAA2023071344054](https://openairdocs.org/sdr/ASAA2023071344054), Jul 13, 2023: UNKNOWN. UNKNOWN. ON GROUND RIGHT FWD WINDOW HEAT AMBER OVERHEAT ILLUMINATED. GROUNDED - YES. CREW PERFORMED THE WINDOW OVERHEAT QRH, AFTER COOL DOWN PERIOD WINDOW HEATS WITCH TU
- [SDR ASAA2023070643914](https://openairdocs.org/sdr/ASAA2023070643914), Jul 6, 2023: UNKNOWN. UNKNOWN. WHEN VNAV SWITCH IS PRESSED GREEN LIGHT IN SWITCH ILLUMINATES AND "VNAV"APPEARS IN WHITE ON FMA AT TOP OF PFD'S. AFTER 3-10 SECONDS VNAV MODE TURNS OFF WITHOUT 
- [SDR ASAA2023061143524](https://openairdocs.org/sdr/ASAA2023061143524), Jun 11, 2023: UNKNOWN. UNKNOWN. LEFT FWD OVERHEAT ANNUNCIATOR ON PUSH BACK. RAN WINDOW OVERHEAT (3.7) QRH AND CLEARED ANNUNCIATOR. GROUNDED - YES. PERFORMED WINDOW HEAT CONTROL UNIT SYS. TEST 
- [SDR ASAA2023052343717](https://openairdocs.org/sdr/ASAA2023052343717), May 23, 2023: DEFLECTOR. CRACKED. DEFLECTOR CRACKS BEYOND LIMITS OF T.C # 72-220-00 #1 ENG ESN 603836 REF SUB TASK 72-00-00-211-007-G00 STEP 2 OF TASK CARD. GROUNDED - YES. PERFORMED TC PWRPL-72
- [SDR ASAA2023042442989](https://openairdocs.org/sdr/ASAA2023042442989), Apr 24, 2023: STARTER. BROKEN. WHILE PERFORMING #2 ENG IDLE RUN, LOUD WHINING NOISE WAS HEARD FROM STARTER. AFTER STARTER CUTOUT SOUND WENT AWAY. GROUNDED - YES. PERFORMED VISUAL INSPECTION O
- [SDR ASAA2023041542891](https://openairdocs.org/sdr/ASAA2023041542891), Apr 15, 2023: UNKNOWN. UNKNOWN. WXR FAIL APPEARS ON N.D. - NO TEST PATTERN. GROUNDED - YES. WEATHER RADAR OP CK GOOD REF B737-9 AMM 34-41-00. NO HISTORY 30 DAYS.
- [SDR ASAA2023041342880](https://openairdocs.org/sdr/ASAA2023041342880), Apr 13, 2023: CONTROL PANEL. INOPERATIVE. HF2 SELECTOR LIGHT ON OBSERVER RADIO SELECTOR PANEL INOP. GROUNDED - YES. REMOVED AND REPLACED OBSERVER AUDIO CONTROL PANEL PER B737-9 AMM 23-12-41-000-801 AND 
- [SDR ASAA2023040942790](https://openairdocs.org/sdr/ASAA2023040942790), Apr 9, 2023: UNKNOWN. UNKNOWN. FMC FAILURE INTERMITTENTLY DURING FLIGHT. QRH PROCEDURE FOLLOWED. FMCR REGAINED ON 2ND QRH TRY. GROUNDED - YES. COMPLETED WITH TMC RESET PER B737-9 AMM 34-61-00
- [SDR ASAA2023032542567](https://openairdocs.org/sdr/ASAA2023032542567), Mar 25, 2023: UNKNOWN. UNKNOWN. WITH ENGINE AI ON FOR LANDING, AFTER EXITING RUNWAY NUMBER 2 ENG COWL VALVE (AMBER) LIGHT ILLUMINATED - REMAINED ON UNTIL EAI WAS TURNED OFF. GROUNDED - YES. PR
- [SDR ASAA2023032142498](https://openairdocs.org/sdr/ASAA2023032142498), Mar 21, 2023: VALVE. OUT OF RANGE. WHILE ACCOMPLISHING ASA T/C 31-005-00 FOUND MAINTENANCE MESSAGE (BLEED FAMV RVDT L) WITH CORRELATED FAULT CODE 36-12030. GROUNDED - YES. REMOVED AND REPLACED EN
- [SDR ASAA2023030342186](https://openairdocs.org/sdr/ASAA2023030342186), Mar 3, 2023: UNKNOWN. UNKNOWN. RIGHT FMC FAILED IN FLIGHT RAN QRH. RIGHT FMC REMAINED INOP. GROUNDED - YES. PERFORMED FMC SYSTEM OPERATIONAL TEST PER B737-9 AMM 34-61-00. SYSTEM TEST OK NO FA
- [SDR ASAA2023030142139](https://openairdocs.org/sdr/ASAA2023030142139), Mar 1, 2023: UNKNOWN. UNKNOWN. CEILING MOUNTED OVERWING EXIT SIGN BETWEEN 17C & 17D HANGING BY ITS WIRE. GROUNDED - YES. SECURE LIGHT ASSEMBLY, CHECK GOOD IAW B737-9 AMM 33-51-01.
- [SDR ASAA2023021241895](https://openairdocs.org/sdr/ASAA2023021241895), Feb 12, 2023: UNKNOWN. UNKNOWN. ON LEVEL OFF DURING ARRIVAL @ 6,000', FLASHING A/T P/RST LIGHT (AMBER) AND THROTTLES WOULD NOT MOVE TO MAINTAIN AIRSPEED. DISCONNECTED A/T AND ATTEMPTED RESET, 
- [SDR ASAA2022100840204](https://openairdocs.org/sdr/ASAA2022100840204), Oct 8, 2022: CDU. FAULT MESSAGE. CREW REPORTS FMC DISAGREE MESSAGE. GROUNDED - YES. BOTH FMCS SET ON-GROUND RIGHT CDU FAILURE. GENERATING FAULTS ARE CDU-R ARINC-INTERMITTENT-RATE, AND CDU-R INT
- [SDR ASAA2022100440210](https://openairdocs.org/sdr/ASAA2022100440210), Oct 4, 2022: DEFLECTOR. CRACKED. REF ASA T/C 72-220-00 #1 ENG BOROSCOPE COMBUSTION CHAMBER SUBTASK 72-00-00-211-007-G00 (2)(B)(1). FOUND 7 DEFLECTOR PLATES WITH AXIAL CRACKS. MEASURED #1 CRACK 
- [SDR ASAA2022100440155](https://openairdocs.org/sdr/ASAA2022100440155), Oct 4, 2022: STARTER. MAKING METAL. WHILE ACCOMPLISHING ASA T/C 80-010-01 ON W/O# 1924093, FOUND LARGE PIECES OF METAL ON CHIP DETECTOR PLUG ON #1 ENG STARTER, REQUIRES REPLACEMENT. GROUNDED - YES
- [SDR ASAA2022092140011](https://openairdocs.org/sdr/ASAA2022092140011), Sep 21, 2022: CIRCUIT BREAKER. FAILED. FMC DISAGREE ON GROUND. GROUNDED - YES. RECYCLED CB'S FOR FMC CDU'S AND FMC COMPUTERS & PERFORMED GOOD OPS CHECK REF B737-9 AMM 34-61-00-710-801.
- [SDR ASAA2022091039916](https://openairdocs.org/sdr/ASAA2022091039916), Sep 10, 2022: MODULE. FAULTY. DURING LANDING ROLL OUT AND TAXI IN, THE F/O PITOT CAUTION LIGHT CAME ON & OFF SEVERAL TIMES. GROUNDED - YES. REMOVED AND REPLACED WINDOW/PITOT HEAT MODULE (P5-
- [SDR ASAA2022091039904](https://openairdocs.org/sdr/ASAA2022091039904), Sep 10, 2022: FMC. FAULTED. DURING PREFLIGHT GROUND POWER DROPPED OFF, APU STARTED AND POWER RESTORED. FMC DISAGREE ANNUNCIATED ON MFD. GROUNDED - YES. ACCOMPLISHED FMC DISAGREE CHECKLIST 
- [SDR ASAA2022071939138](https://openairdocs.org/sdr/ASAA2022071939138), Jul 19, 2022: AUTOPILOT SYS. INOPERATIVE. VNAV WOULD NOT STAY ARMED FOR TAKEOFF. AFTER AIRBORNE, VNAV STAYED ON AND WORKED NORMALLY. GROUNDED - YES. C/W B737-9 FIM TASK 22-11-00-810-D11. NO FAULTS FOUND
- [SDR ASAA2022070738971](https://openairdocs.org/sdr/ASAA2022070738971), Jul 7, 2022: PROCESSOR. LOOSE. WXR FAIL DISPLAYED ON BOTH ND. CB 6-1 D13 REMAINED IN. CYCLED SWITCHES TO NO EFFECT. GROUNDED - YES. REF B737-9 IFIM 34-00-00-810-845. RE-SEATED WEATHER RADAR P
- [SDR ASAA2022061338668](https://openairdocs.org/sdr/ASAA2022061338668), Jun 13, 2022: SWITCH. FAULTY. STAB OUT OF TRIM ILLUMINATED, A/S INCREASED 20-25 KTS. DISCONNECTED A/P AND AIRCRAFT FLEW NORMALLY. GROUNDED - YES. DFCS SPEED / STAB TRIM LIBRARY TEST FAILS ON
- [SDR ASAA2022060538575](https://openairdocs.org/sdr/ASAA2022060538575), Jun 5, 2022: MODULATING VALVE. WARNING LIGHT. OVERHEAD "MAINT" CAUTION LIGHT ILLUMINATED UPON LANDING. GROUNDED - YES. FFR LOGGED 36-12021. #2 FAMV NOT IN COMMANDED POSITION. VALVE WAS IN FAILED OPEN POSITI
- [SDR ASAA2022042538125](https://openairdocs.org/sdr/ASAA2022042538125), Apr 25, 2022: WINDOW. FAULTY. LEFT FORWARD WINDOW OVERHEAT LIGHT WILL NOT EXTINGUISH, TRIED TURNING OFF FOR 5 MINUTES AND THEN BACK ON LIGHT COMES ON INSTANTLY WHEN TURNING SWITCH BACK ON. G
- [SDR ASAA2022041137960](https://openairdocs.org/sdr/ASAA2022041137960), Apr 11, 2022: STARTER. LEAKING. #2 ENG OIL QTY 10 QTS. STARTER FOUND LEAKING OIL. GROUNDED - YES. AIRCRAFT DEPARTED PHX WITH 20 QTS OIL IN #2 ENGINE, A/C ARRIVED IN SEA WITH OIL QTY AT 10 QTS 
- [SDR ASAA2022012037205](https://openairdocs.org/sdr/ASAA2022012037205), Jan 20, 2022: UNKNOWN. UNKNOWN. ALL 4 WINDOW OVERHEAT CAME ON AND RESET PER QRH. GROUNDED - YES. ACCOMPLISHED RESET PROCEDURE PER QRH, NORMAL.

All 66: https://openairdocs.org/aircraft/N918AK/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/N918AK/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.