# N979AK: 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: 43393
- Year built: 2021
- Type: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: May 20, 2022
- Certificate issued: August 2, 2022
- Expires: August 31, 2029
- Mode S code: ADA51E
- 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=979AK
- Page: https://openairdocs.org/aircraft/N979AK

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 N979AK.

## FAA accident and incident reports

None matched to N979AK.

## Service difficulty reports (45)

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 ASAA2026091168686](https://openairdocs.org/sdr/ASAA2026091168686), Sep 11, 2026: COVER. CRACKED. FLOOR PHOTOLUMINESCENT STRIP COVER SLEEVE CRACKED AND PEELING UP. (A SECTION APPROX 20 INCHES IN LENGTH) LOCATED OUTBOARD AND FWD OF SEAT 1C. GROUNDED - YES. RE
- [SDR ASAA2025092461099](https://openairdocs.org/sdr/ASAA2025092461099), Sep 24, 2025: LENS. BROKEN. ROW 17F EMERGENCY EXIT LIGHT LENS FELL OFF. GROUNDED - YES. FOUND LIGHT LENS BROKEN. INSTALLED NEW LIGHT LENS AS REQUIRED.
- [SDR ASAA2025082860427](https://openairdocs.org/sdr/ASAA2025082860427), Aug 28, 2025: COVER. DETACHED. R2 DOOR EXIT SIGN COVER DETACHED. GROUNDED - YES. RE-INSTALLED LENS SIGN COVER AS REQ'D IAW AMM 33-50-00.
- [SDR ASAA2025070659263](https://openairdocs.org/sdr/ASAA2025070659263), Jul 6, 2025: BATTERY PACK. INOPERATIVE. WITH THE EMERGENCY EXIT LIGHT SWITCH ON - THE FOLLOWING INTERIOR LIGHTS ARE INOP: "EXIT" LIGHTS OVER L2 AND R2 DOOR, OVERHEAD CENTER AISLE LIGHTS BETWEEEN THE A
- [SDR ASAA2025070659262](https://openairdocs.org/sdr/ASAA2025070659262), Jul 6, 2025: BATTERY PACK. INOPERATIVE. EXTERIOR EMERGENCY EXIT LIGHT AFT OF L1 DOOR INOP. GROUNDED - YES. REMOVED & REPLACED EMERGENCY LIGHT BATTERY PACK, OPS TEST CHECKS GOOD IAW B737MAX AMM 33-51-0
- [SDR ASAA2025070659261](https://openairdocs.org/sdr/ASAA2025070659261), Jul 6, 2025: BATTERY PACK. INOPERATIVE. EXTERIOR EMERGENCY EXIT LIGHT AFT OF L2 DOOR INOP. GROUNDED - YES. REMOVED & REPLACED EMERGENCY LIGHT BATTERY PACK, OPS TEST CHECKS GOOD IAW B737MAX AMM 33-51-0
- [SDR ASAA2025070659260](https://openairdocs.org/sdr/ASAA2025070659260), Jul 6, 2025: BATTERY PACK. INOPERATIVE. EXTERIOR EMERGENCY EXIT LIGHT AFT OF RIGHT WING INOP. GROUNDED - YES. REMOVED & REPLACED EMERGENCY LIGHT BATTERY PACK, OPS TEST CHECKS GOOD IAW B737MAX AMM 33-5
- [SDR ASAA2025070659259](https://openairdocs.org/sdr/ASAA2025070659259), Jul 6, 2025: BATTERY PACK. INOPERATIVE. EXTERIOR EMERGENCY EXIT LIGHT AFT OF R2 DOOR INOP. GROUNDED - YES. REMOVED & REPLACED EMERGENCY LIGHT BATTERY PACK, OPS TEST CHECKS GOOD IAW B737MAX AMM 33-51-0
- [SDR ASAA2025070659258](https://openairdocs.org/sdr/ASAA2025070659258), Jul 6, 2025: BATTERY PACK. INOPERATIVE. EXTERIOR EMERGENCY EXIT LIGHT AFT OF RIGHT AFT OVERWING EMERGENCY EXIT DOOR INOP. GROUNDED - YES. REMOVED & REPLACED BATTERY PACK, OPS TEST CHECKS GOOD IAW B737
- [SDR ASAA2025070659257](https://openairdocs.org/sdr/ASAA2025070659257), Jul 6, 2025: POWER SUPPLY. INOPERATIVE. EXTERIOR EMERGENCY EXIT LIGHT AFT OF R1 DOOR INOP. GROUNDED - YES. REMOVED & REPLACED EMERGENCY LIGHT BATTERY PACK, OPS TEST CHECKS GOOD IAW B737MAX AMM 33-51-0
- [SDR ASAA2025070659248](https://openairdocs.org/sdr/ASAA2025070659248), Jul 6, 2025: BATTERY PACK. INOPERATIVE. MULTIPLE EMERGENCY LIGHTS IN THE CABIN AND ON THE OUTSIDE OF THE PLANE ARE INOP. GROUNDED - YES. REMOVED + REPLACED BATTERY PACKS M1672, M1673, M2816, M1675, AN
- [SDR ASAA2024032248601](https://openairdocs.org/sdr/ASAA2024032248601), Mar 22, 2024: LAMP. INOPERATIVE. FWD LH SLIDE LIGHT WILL NOT ILLUMINATE. GROUNDED - YES. REPLACED LAMP FOR FWD LH SLIDE LIGHT REF AMM 33-51-04. LAMP TEST GOOD. NO DEFECTS NOTED.
- [SDR ASAA2023110346013](https://openairdocs.org/sdr/ASAA2023110346013), Nov 3, 2023: UNKNOWN. UNKNOWN. WHILE PERFORMING TASK CARD 72-ASA-04 ON ENG #2, FOUND HPT #1 SHROUD MISSING COATING ON 12 HPT SHROUD PANELS. 75% TO 100% OF COATING MISSING ON ALL PANELS. GROUN
- [SDR ASAA2023102845868](https://openairdocs.org/sdr/ASAA2023102845868), Oct 28, 2023: UNKNOWN. UNKNOWN. AFTER START #1 ENGINE "ENG CONTROL" LIGHT ILLUMINATED. GROUNDED - YES. FOUND MAINTENANCE MESSAGE 80-44000 (ELECTRONIC OVERSPEED THRUST CONTROL MALFUNCTION ACCOM
- [SDR ASAA2023100745527](https://openairdocs.org/sdr/ASAA2023100745527), Oct 7, 2023: UNKNOWN. UNKNOWN. GE DIAGNOSTICS REPORTS THE #2 ENGINE IS GENERATING ALERTS FOR PS3 OUT OF RANGE, PS3 PRESSURE DISAGREE FAULT, P3B OUT OF RANGE, P3B PRESSURE DISAGREE FAULT, OR P
- [SDR ASAA2023100645469](https://openairdocs.org/sdr/ASAA2023100645469), Oct 6, 2023: UNKNOWN. UNKNOWN. DURING PREFLIGHT FMC DISAGREE ANNUNCIATED. GROUNDED - YES. ACCOMPLISHED QRH PROCEDURE TO RESET FMCS.
- [SDR ASAA2023100545465](https://openairdocs.org/sdr/ASAA2023100545465), Oct 5, 2023: UNKNOWN. UNKNOWN. REF T/C 05-020-01 IN PRESENT LEG FAULTS MESSAGE 77-41614 "EGT PROBE 2 VALUE DOES NOT AGREE WITH THE AVERAGE OF ALL OTHER VALID EGT PROBE VALUES" IS SHOWING. GRO
- [SDR ASAA2023100445461](https://openairdocs.org/sdr/ASAA2023100445461), Oct 4, 2023: UNKNOWN. UNKNOWN. DRIPPING ENGINE OIL UNDER #2 ENGINE W/SMALL POOLING COLLECTING UNDERNEATH. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023091445135](https://openairdocs.org/sdr/ASAA2023091445135), Sep 14, 2023: UNKNOWN. UNKNOWN. L2 WINDOW 'OVERHEAT' ON GROUND. FOLLOWED QRH PROCEDURE BUT LIGHT FAILED TO RESET. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023090744990](https://openairdocs.org/sdr/ASAA2023090744990), Sep 7, 2023: UNKNOWN. UNKNOWN. APU FAULT LIGHT ILLUMINATED ON START. GROUNDED - YES. PERFORMED APU OPS TEST REF 49-11-00-710-802. NO FAULTS. NO HISTORY PAST 60 DAYS.
- [SDR ASAA2023090344916](https://openairdocs.org/sdr/ASAA2023090344916), Sep 3, 2023: UNKNOWN. UNKNOWN. MCDU #1 LOCKED UP IN FLIGHT. GROUNDED - YES. PERFORMED A/C POWER RESET REF AMM 24-22-00. MCDU #1 OPS CHECK GOOD AT THIS TIME. NO FAULTS FOUND OR MAINTENANCE MES
- [SDR ASAA2023081644650](https://openairdocs.org/sdr/ASAA2023081644650), Aug 16, 2023: CONTROL VALVE. FAULTY. MAINT LIGHT ILLUMINATED ON OVERHEAD PANEL. GROUNDED - YES. ACCOMPLISHED B737-9 IFIM TASK 21-51-00-810-817. PERFORMED A/C IBIT LEFT GROUND TEST. FAULT 21-55090 D
- [SDR ASAA2023081444636](https://openairdocs.org/sdr/ASAA2023081444636), Aug 14, 2023: PUMP. LEAKING. FUEL LEAKING UNDER #2 ENGINE LEAVING TRAIL ON TAXI IN. GROUNDED - YES. TAGGED OUT FLAP LEVER, B SYS HYDROS, START SWITCH, OPENED # 2 ENG FAN COWLS, RAN #2 ENG. 
- [SDR ASAA2023072644277](https://openairdocs.org/sdr/ASAA2023072644277), Jul 26, 2023: UNKNOWN. UNKNOWN. DURING CRUISE, VTK AND MAP FAILURE FLAGS NOTED ON FIRST OFFICERS DISPLAY. ADDITIONALLY, "SINGLE FMC OPERATION" WAS DISPLAYED ON FIRST OFFICER MCDU. QRH FOR FMC 
- [SDR ASAA2023063043824](https://openairdocs.org/sdr/ASAA2023063043824), Jun 30, 2023: CONTROL VALVE. FAULTY. OVHD MAINT LIGHT ILLUMINATED. GROUNDED - YES. REMOVED AND REPLACED LEFT PACK TEMP CONTROL VALVE, REF B737-9 AMM 21-51-10-400-801, OPS/LEAK CHECK GOOD.
- [SDR ASAA2023062543741](https://openairdocs.org/sdr/ASAA2023062543741), Jun 25, 2023: UNKNOWN. UNKNOWN. TWO APU FAULTS ON SEQUENTIAL STARTS. DID NOT TRY A THIRD ATTEMPT. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023052543391](https://openairdocs.org/sdr/ASAA2023052543391), May 25, 2023: EXCITER. FAULTY. #2 ENGINE FAILED TO START. HUNG START AFTER MOTORING FUEL FLOW WAS INTRODUCED AT 0.24 FOR 5-10 SECONDS THEN WENT TO ZERO. GROUNDED - YES. REMOVED AND REPLACED L
- [SDR ASAA2023042442970](https://openairdocs.org/sdr/ASAA2023042442970), Apr 24, 2023: MODULATING VALVE. FAULTY. TECH SERVICES REQUEST FOLLOW-UP TO LEFT BLEED LOW TEMP AERMETRIC FAULT GROUNDED - YES. REPLACED THE #1 ENG FAMV PER B737-9 AMM 36-12-03. OPS CKS GOOD, ETOPS GRO
- [SDR ASAA2023042242976](https://openairdocs.org/sdr/ASAA2023042242976), Apr 22, 2023: IGNITER. FAULTY. CREW ADVISED #2 ENG HUNG START 1ST ATTEMPT WITH SUCCESSFUL 2ND ATTEMPT OUT OF RALEIGH. GROUNDED - YES. CHECKED OMS AND FOUND FAULT CODE 74-42544 RIGHT IGNITION 
- [SDR ASAA2023040742770](https://openairdocs.org/sdr/ASAA2023040742770), Apr 7, 2023: UNKNOWN. UNKNOWN. FMC DISAGREE MESSAGE DURING PREFLIGHT. GROUNDED - YES. QRH PROCEDURE RESOLVED THE ISSUE.
- [SDR ASAA2023040142667](https://openairdocs.org/sdr/ASAA2023040142667), Apr 1, 2023: UNKNOWN. UNKNOWN. LEFT WING ANTI-ICE INOP. CYCLED WING ANTI-ICE MULTIPLE TIMES AT VARIED THRUST SETTINGS BELOW TEN THOUSAND. GROUNDED - YES. PERFORMED L/WING THERMAL ANTI-ICE VAL
- [SDR ASAA2023032442573](https://openairdocs.org/sdr/ASAA2023032442573), Mar 24, 2023: UNKNOWN. UNKNOWN. FOUND ON PREFLIGHT- FMC DISAGREE. GROUNDED - YES. PERFORMED B737-9 IFIM TASK 34-61-00-810-918 AND FMC DISAGREE MSG EXTINGUISHED.
- [SDR ASAA2023021641968](https://openairdocs.org/sdr/ASAA2023021641968), Feb 16, 2023: UNKNOWN. UNKNOWN. BOTH FORWARD WINDOW "OVERHEAT" LIGHTS ILLUMINATED AT THE GATE IN RENO. GROUNDED - YES. SWITCHED BOTH OFF FOR 5 MINS, THEN BACK ON, SYSTEM OPERATING NORMALLY.
- [SDR ASAA2023021241905](https://openairdocs.org/sdr/ASAA2023021241905), Feb 12, 2023: PROCESSOR. FAULTY. WXR FAIL MESSAGE DISPLAYED ON BOTH CAPT AND FO RADAR DISPLAY. ALSO DID NOT TEST. NO PATTERN FOR TEST ON EITHER DISPLAY. GROUNDED - YES. WXR WAS INOP AS DESCRIBE
- [SDR ASAA2023021141902](https://openairdocs.org/sdr/ASAA2023021141902), Feb 11, 2023: UNKNOWN. UNKNOWN. WXR FAIL MESSAGE ON FO AND CAPT ND'S. GROUNDED - YES. PERFORMED WEATHER RADAR OPERATIONAL TEST IAW B737-9 AMM 34-41-00-710-801.
- [SDR ASAA2023020141754](https://openairdocs.org/sdr/ASAA2023020141754), Feb 1, 2023: NOT ENTERED. NOT ENTERED. FOUND EMERG. EXIT AISLE LIGHT ROW 6 RH (L01529) INOP. GROUNDED - YES. FOUND WIRES BROKEN 7 INCHES FROM CONNECTOR D15210. REPAIRED WIRING REF B737-9 SWPM 20-30-1
- [SDR ASAA2023013041743](https://openairdocs.org/sdr/ASAA2023013041743), Jan 30, 2023: UNKNOWN. UNKNOWN. CA SIDE MCDU LOCKED UP DURING FLIGHT. GROUNDED - YES. PERFORMED POWER DOWN / POWER UP RESET CAPTAIN'S MCDU OPS NORMAL AS PER B737-9 AMM 34-61-00.
- [SDR ASAA2023011841566](https://openairdocs.org/sdr/ASAA2023011841566), Jan 18, 2023: VALVE. FAULTED. MAINT LIGHT ILLUMINATED ON OVERHEAD AFTER LANDING. GROUNDED - YES. CONFIRMED FAULT IS 'BLEED FAMV L MAINT MSG #36-12020. REMOVED AND REPLACED #1 ENG FAN AIR MOD
- [SDR ASAA2022120141015](https://openairdocs.org/sdr/ASAA2022120141015), Dec 1, 2022: PUMP. LEAKING. NO. 1 ENGINE FUEL LEAK TRAILING BEHIND ENGINE AS TAXING TO PARKING. AFTER ENGINE SHUTDOWN LARGE POOL OF JET FUEL UNDER ENGINE. GROUNDED - YES. PERFORMED IDLE LE
- [SDR ASAA2022110840687](https://openairdocs.org/sdr/ASAA2022110840687), Nov 8, 2022: SENSOR. FAULTED. #1 OIL PRESSURE SHOWS 2 PSI WITH ENGINE OFF (CAPTAIN REPORT). GROUNDED - YES. REMOVED AND REPLACED OIL PRESSURE/TEMP SENSOR REF B737-9 AMM 79-32-01.
- [SDR ASAA2022102540464](https://openairdocs.org/sdr/ASAA2022102540464), Oct 25, 2022: RADAR. FAILED. WX RADAR FAIL. GROUNDED - YES. ACCOMPLISHED B737-9 IFIM 31-00-00-810-803. ONBD MAINT DOES NOT SHOW ANY FAULTS LOGGED FOR WX RADAR. WX RADAR TEST NORMAL REF. B73
- [SDR ASAA2022101740325](https://openairdocs.org/sdr/ASAA2022101740325), Oct 17, 2022: ENGINE. VIBRATION. CFM REPORTS #1 ENGINE (LEAP-1B28 / SN 603845) HAS ELEVATED NSV VIBRATION LEVELS. ENGINE REMOVAL IS REQUIRED. NO EXTENSION ALLOWED. GROUNDED - YES. ACCOMPLISHED 
- [SDR ASAA2022091539982](https://openairdocs.org/sdr/ASAA2022091539982), Sep 15, 2022: RADAR. FAILED. DURING DESCENT WXR FAIL. GROUNDED - YES. CYCLED POWER TO WXR OPS RESTORED AND CHECK OK REF B737-9 AMM 34-41-00.
- [SDR ASAA2022090639867](https://openairdocs.org/sdr/ASAA2022090639867), Sep 6, 2022: UNKNOWN. UNKNOWN. ABOUT ONE HOUR AND TWENTY MINUTES INTO THE FLIGHT AT FL340 WE EXPERIENCED A LEFT FMC FAILURE GROUNDED - YES. FMC FAILURE LASTED ABOUT 30 SECONDS THEN BECAME OPE
- [SDR ASAA2022081639534](https://openairdocs.org/sdr/ASAA2022081639534), Aug 16, 2022: STATIC INVERTER. INOPERATIVE. ON LANDING ROLLOUT ELEC LIGHT ILLUMINATED. REF ASA 60221484, 60221481, 60221483 GROUNDED - YES. ELEC LT TEST SHOWS STATIC INV INOP. INSTALLED STATIC INVERTER RE

## 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/N979AK/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.