# N291BT: 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: 44088
- Year built: 2021
- Type: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: June 24, 2021
- Certificate issued: July 30, 2021
- Expires: July 31, 2028
- Mode S code: A2F95C
- 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=291BT
- Page: https://openairdocs.org/aircraft/N291BT

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 N291BT.

## FAA accident and incident reports

None matched to N291BT.

## Service difficulty reports (57, 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 ASAA2026051065971](https://openairdocs.org/sdr/ASAA2026051065971), May 10, 2026: BATTERY PACK. NO TEST. WHILE ACCOMPLISHING T/C 33-055-00 L2 DOOR EMERGENCY EXIT LIGHTS FAILED 15 MIN CHECK. GROUNDED - YES. REPLACED BATTERY PACK REF AMM 33-51-06-960-802. TEST PASS.
- [SDR ASAA2025101361578](https://openairdocs.org/sdr/ASAA2025101361578), Oct 13, 2025: PLATE. MISSING. EXIT SIGN LOCATED IN THE CENTER AISLE MID CABIN IS MISSING THE BACKING PLATE. GROUNDED - YES. INSTALLED MISSING BACKING ON EXIT SIGN LOCATED IN THE CENTER AISLE
- [SDR ASAA2025091360894](https://openairdocs.org/sdr/ASAA2025091360894), Sep 13, 2025: LENS. MISSING. L2 DOOR EMER EXIT LIGHT LENS BROKEN. GROUNDED - YES. REPLACED L2 DOOR EMER EXIT LIGHT LENS REF AMM TASK 33-51-01.
- [SDR ASAA2025042857768](https://openairdocs.org/sdr/ASAA2025042857768), Apr 28, 2025: SKIN. DENTED. LH INBOARD FLAP LOWER SEGMENT, UNDER SURFACE SKIN HAS ONE DENT ON THE INBOARD SIDE AND MULTIPLE NICKS AROUND, IDENTIFIED WITH ORANGE STICKER # 118-001. GROUNDED
- [SDR ASAA2025032556834](https://openairdocs.org/sdr/ASAA2025032556834), Mar 25, 2025: LENS. MISSING. EXIT ROW LIGHT LENS CAP MISSING ON WALL @ 17A. GROUNDED - YES. INSTALLED NEW LENS @ 17A.
- [SDR ASAA2024072051186](https://openairdocs.org/sdr/ASAA2024072051186), Jul 20, 2024: PRESSURE SWITCH. NO TEST. ASSIGNED WO #2010108 T/C AD20222409-MULTI-21-2 CABIN ALTITUDE WARNING SWITCH S1153 TEST FAILED. GROUNDED - YES. REMOVED AND REPLACED CABIN ALTITUDE WARNING SWIT
- [SDR ASAA2023110746125](https://openairdocs.org/sdr/ASAA2023110746125), Nov 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 ASAA2023110246030](https://openairdocs.org/sdr/ASAA2023110246030), Nov 2, 2023: UNKNOWN. UNKNOWN. DURING TAXI IN PDX RIGHT SIDE WINDOW OVERHEAT LIGHT ILLUMINATED. GROUNDED - YES. PERFORMED QRH WHICH RESOLVED THE ISSUE.
- [SDR ASAA2023102145773](https://openairdocs.org/sdr/ASAA2023102145773), Oct 21, 2023: UNKNOWN. UNKNOWN. #2 (R) SIDE WINDOW HEAT OVERHEAT COMPLIED WITH QRH LIGHT RETURNING. GROUNDED - YES. PERFORMED B737-9 IFIM TASK 30-41-00-810-831. PER INITIAL EVALUATION SEC. B, 
- [SDR ASAA2023101245581](https://openairdocs.org/sdr/ASAA2023101245581), Oct 12, 2023: UNKNOWN. UNKNOWN. HF#1 IN-OP FOR TRANSMITTING. IT DOES RECEIVE. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023101245587](https://openairdocs.org/sdr/ASAA2023101245587), Oct 12, 2023: UNKNOWN. UNKNOWN. PWS - PREDICTIVE WINDSHEAR + WXR FAIL LIGHTS ILLUMINATED INTERMITTANTLY INFLIGHT FL360. GROUNDED - YES. PERFORMED WXR OPERATIONAL TEST TWICE. PASSED BOTH TIMES,
- [SDR ASAA2023092045225](https://openairdocs.org/sdr/ASAA2023092045225), Sep 20, 2023: VALVE. DAMAGED. WHILE ACCOMPLISHING TASK CARD #72-ASA-03 FOUND HIGH PRESSURE SHUTOFF VALVE HPSOV ON #1 ENG LOCKOUT BOLT DAMAGED FROM VALVE. 3 CD PULLED ENG #1 SPAR VLV, ENG #1 
- [SDR ASAA2023091045060](https://openairdocs.org/sdr/ASAA2023091045060), Sep 10, 2023: UNKNOWN. UNKNOWN. ATTEMPTED 2 APU STARTS ON THE GROUND WITH FAULTS ON BOTH ATTEMPTS. GROUNDED - YES. OPERATED APU START MULTIPLE CYCLES, OPERATED NORMALLY. NOTED APU PREV. FAULT.
- [SDR ASAA2023090444946](https://openairdocs.org/sdr/ASAA2023090444946), Sep 4, 2023: UNKNOWN. UNKNOWN. FMC DISAGREE ON APPROACH. GROUNDED - YES. PERFORMED IFIM 34-61-00-810-918. NO FAULTS FOUND.OK FOR SERVICE.
- [SDR ASAA2023082444785](https://openairdocs.org/sdr/ASAA2023082444785), Aug 24, 2023: UNKNOWN. UNKNOWN. ON GRD DURING PREFLIGHT OBSERVED "FMC DISAGREE" ON BOTH NAV DISPLAYS. GROUNDED - YES. QRH "FMC DISAGREE" ON THE GRD PROCEEDURE ACCOMPLISHED. RESTORED NORMAL FMC
- [SDR ASAA2023080544424](https://openairdocs.org/sdr/ASAA2023080544424), Aug 5, 2023: UNKNOWN. UNKNOWN. DURING WORK ON T/C 31-005-00 FOUND SMT ENG 1 C1 MAINTENANCE MSG 73-438501 ENGINE FAN INLET (T12) TEMPERATURE SENSOR AND CALCULATED ADIRU TEMPERATURE SIGNALS DO 
- [SDR ASAA2023072744302](https://openairdocs.org/sdr/ASAA2023072744302), Jul 27, 2023: UNKNOWN. UNKNOWN. L FWD WINDOW OVERHEAT LT ILLUMINATED ON TAXI OUT IN SEA QRH ACCOMPLISHED. GROUNDED - YES. ACCOMPLISHED WINDOW HEAT SYSTEM OPERATIONAL TEST PER B737-9 AMM 30-41-
- [SDR ASAA2023071244000](https://openairdocs.org/sdr/ASAA2023071244000), Jul 12, 2023: UNKNOWN. UNKNOWN. TWO ATTEMPTED ENGINE STARTS ON NO. 2 ENGINE WITH NO LIGHT OFF, RIGHT IGNITOR. GROUNDED - YES. FOUND #2 ENGINE IGNITION C/B OPEN, CLOSED C/B AS REQUIRED. PERFORM
- [SDR ASAA2023050343095](https://openairdocs.org/sdr/ASAA2023050343095), May 3, 2023: FILTER. CLOGGED. FOUND #1 IDG DPI POPPED DURING WALK AROUND. GROUNDED - YES. INSPECTED AND REPLACED IDG SCAVENGE AND CHARGE FILTERS, NO DEBRIS FOUND. REF B737-9 AMM 24-11-41, LE
- [SDR ASAA2023050143088](https://openairdocs.org/sdr/ASAA2023050143088), May 1, 2023: FILTER. CLOGGED. DURING APU INSPECTION, FOUND OIL FILTER RED INDICATOR FOR LUBE FILTER ELEMENT EXTENDED. GROUNDED - YES. REMOVED AND REPLACED LUBE FILTER ELEMENT PER B737-9 AMM 
- [SDR ASAA2023041942946](https://openairdocs.org/sdr/ASAA2023041942946), Apr 19, 2023: UNKNOWN. UNKNOWN. F/A REPORTS DIRTY SOCK SMELL COMING FROM AFT GALLEY NEAR THE R2 DOOR. ODOR BEGAN AND WAS FIRST NOTICED DURING THE TAKE OFF ROLL. ODOR WAS CONFIRMED BY COMMUTING
- [SDR ASAA2023031442368](https://openairdocs.org/sdr/ASAA2023031442368), Mar 14, 2023: UNKNOWN. UNKNOWN. AT FL 340 "RIGHT SIDE" WINDOW OVERHEAT ILLUMINATED. GROUNDED - YES. PER ASA QRH TURNED OFF FOR 5 MIN, THEN BACK ON, OVERHEAT LIGHT DID NOT ILLUMINATE FOR THE RE
- [SDR ASAA2023022442063](https://openairdocs.org/sdr/ASAA2023022442063), Feb 24, 2023: UNKNOWN. UNKNOWN. SATCOM LOCKUP GROUNDED - YES. PERFORMED QRH SATCOM CB RESET PROCEDURE PER QRH. SATCOM RESTORED NORMAL.
- [SDR ASAA2023021842000](https://openairdocs.org/sdr/ASAA2023021842000), Feb 18, 2023: SENSOR. FAULTY. ENG 1 EEC C2. FOUND CORRELATED MSG 73-43782 COMPRESSOR INLET TEMPERATURE (T25) SENSOR IS OUT OF RANGE. DETECTED BY ENGINE-1 EEC CHANNEL-B. GROUNDED - YES. REMOV
- [SDR ASAA2023021841999](https://openairdocs.org/sdr/ASAA2023021841999), Feb 18, 2023: SENSOR. FAULTY. ENG 1 EEC C1. FOUND CORRELATED MSG 73-43772 COMPRESSOR INLET TEMPERATURE (T25) SENSOR CHANNEL-A AND CHANNEL-B DO NOT AGREE. DETECTED BY ENGINE-1 EEC CHANNEL-B. 
- [SDR ASAA2023021842001](https://openairdocs.org/sdr/ASAA2023021842001), Feb 18, 2023: UNKNOWN. UNKNOWN. MAINT LIGHT ON OVERHEAD PANEL. GROUNDED - YES. FOUND STATUS MESSAGES ENG 1 CONTROL & ENG 1 REVERSER. SELECTED EEC ENG 1 MAINTENANCE POWER FROM TEST TO NORMAL. E
- [SDR ASAA2023021541949](https://openairdocs.org/sdr/ASAA2023021541949), Feb 15, 2023: VALVE. FAULTY. MASTER CAUTION ANTI-ICE ABOUT 40KTS ON TAKE OFF. CLEARED AFTER CLEAR OF RUNWAY. GROUNDED - YES. REMOVED AND REPLACED ENGINE ANTI-ICE VALVE, REF B737-9 AMM 30-21
- [SDR ASAA2023021041914](https://openairdocs.org/sdr/ASAA2023021041914), Feb 10, 2023: SWITCHPACK. FAULTY. ON ROLLOUT MAINT LIGHT ILLUMINATED. GROUNDED - YES. ACCOMPLISHED PSU LRU REPLACEMENT TEST REF B737-9 IFIM 32-09-10. TEST FAILS & GIVES MSG 31-52002 "PSEU LEFT T
- [SDR ASAA2023020241829](https://openairdocs.org/sdr/ASAA2023020241829), Feb 2, 2023: NOT REPORTED. NOT REPORTED. VTK ON F/O DISPLAY. GROUNDED - YES. CYCLED FMC #2 CB P6-1 D16. PERFORMED OPS TEST OF FMC #2 SYSTEM IAW B737-9 AMM 34-61-00-710-801. OPS TEST GOOD.
- [SDR ASAA2022121141079](https://openairdocs.org/sdr/ASAA2022121141079), Dec 11, 2022: FMC. FAULT MESSAGE. FMC DISAGREE MESSAGE. GROUNDED - YES. RESET PER QRH PROCEDURE 11.2.
- [SDR ASAA2022112540943](https://openairdocs.org/sdr/ASAA2022112540943), Nov 25, 2022: MODULATING VALVE. FAULTED. ON ROLLOUT AFTER LANDING, AMBER OVERHEAT MAINT LIGHT ILLUMINATED. GROUNDED - YES. FAMV L FAULT CONFORMED REF T/C M9-36CMPT-24668-1. R/R FAMV ON #1 ENG. OPS CHEC
- [SDR ASAA2022112240900](https://openairdocs.org/sdr/ASAA2022112240900), Nov 22, 2022: WARNING MESSAGE. ILLUMINATED. ON FINAL BOTH THE PWS FAIL AND WX FAIL AMBER LIGHTS ILLUMINATED FOR AT LEAST 5 SECONDS THEN AFTER THAT THE ANNUNCIATOR AMBER LIGHTS EXTINGUISHED. GROUNDED - YES
- [SDR ASAA2022111840862](https://openairdocs.org/sdr/ASAA2022111840862), Nov 18, 2022: HELICOIL. DAMAGED. #2 ENG HPSOV LOCKOUT HELICOIL DAMAGED. GROUNDED - YES. REMOVED AND REPLACED #2 ENG HPSOV REF B737-9 AMM 36-11-07, LEAK CHECK GOOD. ELECTRICAL LRU REPLACEMENT TE
- [SDR ASAA2022100440151](https://openairdocs.org/sdr/ASAA2022100440151), Oct 4, 2022: FMC. FAILED. FMC - L FAIL. SINGLE FMC OPERATION. GROUNDED - YES. REMOVED AND REPLACED FMC IAW B737-9 AMM 34-61-02. OPS CHECK GOOD.
- [SDR ASAA2022092040009](https://openairdocs.org/sdr/ASAA2022092040009), Sep 20, 2022: CONTROL UNIT. FAULTY. ON GROUND R1 WINDOW OVERHEAT LIGHT ILLUMINATED. GROUNDED - YES. REMOVED AND INSTALLED NEW WHCU. REF B737-9 AMM 30-41-11-000-801 AND 30-41-11-400-801.
- [SDR ASAA2022092040008](https://openairdocs.org/sdr/ASAA2022092040008), Sep 20, 2022: OVERHEAT. WARNING LIGHT. ON SHUT DOWN, WINDOW HEAT R FWD OVERHEAT LIGHT ILLUMINATED. CONDITION TEMPORARY. GROUNDED - YES. ACCOMPLISHED WINDOW HEAT SYSTEM, TESTED NORMAL. IAW B737-9 AMM 
- [SDR ASAA2022090439774](https://openairdocs.org/sdr/ASAA2022090439774), Sep 4, 2022: AUTOLAND SYS. MALFUNCTIONED. AUTOTHROTTLE DISCONNECT WITH AUTOTHROTTLE SPLIT @ 12,000 FT. DURING DESCENT. RE-ENGAGED W/ NO FURTHER MALFUNCTION. GROUNDED - YES. ACCOMPLISHED A/T OPERATIONAL 
- [SDR ASAA2022072039196](https://openairdocs.org/sdr/ASAA2022072039196), Jul 20, 2022: IGNITION SYS. WARNING LIGHT. MAINT LIGHT ON OVERHEAD PANEL ILLUMINATED UPON LANDING. GROUNDED - YES. FOUND FAULTS FOR ENG1 AND ENG2 IGNITION LEFT RELEASED PER MEL 74-00-01B BOTH LT HAND IGN
- [SDR ASAA2022070138906](https://openairdocs.org/sdr/ASAA2022070138906), Jul 1, 2022: CIRCUIT BREAKER. FAULTY. DURING APU START, AC FLAGGED A APU FAULT UNABLE TO ACCEPT A/C POWER (GROUND). GROUNDED - YES. REMOVED AND REPLACED AUX POWER BREAKER, C803 IN P91 POWER PANEL. O
- [SDR ASAA2022042138078](https://openairdocs.org/sdr/ASAA2022042138078), Apr 21, 2022: SENSOR. FAULTY. WHILE PERFORMING T/C 05-020-01. FOUND ENG FAULT 73-43855 ENG FAN INLET (T12) TEMP SENSOR AND CALCULATED ADIRU AIR TEMP SIGNALS DO NOT AGREE ON ENG 2. GROUNDED -
- [SDR ASAA2022042138077](https://openairdocs.org/sdr/ASAA2022042138077), Apr 21, 2022: SENSOR. FAULTY. WHILE PERFORMING T/C 05-020-01. FOUND ENG FAULT 73-43850 ENG FAN INLET (T12) TEMP SENSOR AND CALCULATED ADIRU AIR TEMP SIGNALS DO NOT AGREE ON ENG 1. GROUNDED -
- [SDR ASAA2022041337987](https://openairdocs.org/sdr/ASAA2022041337987), Apr 13, 2022: IGNITER. INOPERATIVE. #1 ENGINE DID NOT START. ENG VALVE CLOSED LIGHT WAS ILLUMINATED BRIGHT. GROUNDED - YES. #1 ENGINE RIGHT IGNITER INOP. PERFORMED B737-9 IFIM TASK G74-20-00-810-8
- [SDR ASAA2022031737707](https://openairdocs.org/sdr/ASAA2022031737707), Mar 17, 2022: UNKNOWN. UNKNOWN. MAINT CAUTION LIGHT ILLUMINATED ON OVERHEAD. GROUNDED - YES. FOUND MAINT STATUS MSG: ENG 2 IGNITER (R) & (L) ENG 1 IGNITER (R) & (L)- PERFORMED B737-9 IFIM TASK
- [SDR ASAA2022031237679](https://openairdocs.org/sdr/ASAA2022031237679), Mar 12, 2022: UNKNOWN. UNKNOWN. LEFT WINDOW #2, COCKPIT WINDOW HEAT INOP. GROUNDED - YES. PERFORMED B737-9 IFIM TASK 30-41-00-810-827 PER FIM FAULT WAS INTERMITTENT.
- [SDR ASAA2022012237237](https://openairdocs.org/sdr/ASAA2022012237237), Jan 22, 2022: VALVE. FAULTY. OVHD MAINT LIGHT ON LANDING ROLL. GROUNDED - YES. #2 ENGINE MAINT MESSAGE ON INBOUND FLIGHT DECK EFFECTS. TSR711529 EXISTS FOR 36-12021 MAINT MESSAGE. PER TSR, 
- [SDR ASAA2022011837198](https://openairdocs.org/sdr/ASAA2022011837198), Jan 18, 2022: UNKNOWN. UNKNOWN. AMBER MAINT LIGHT ILLUMINATED ON OVERHEAD PANEL. GROUNDED - YES. FOUND TWO FAULTS ON SYS STATUS, R BLEED FAMV AND R PACK CONTROL. PERFORMED ENGINE ON SYS TEST. 
- [SDR ASAA2021122837026](https://openairdocs.org/sdr/ASAA2021122837026), Dec 28, 2021: UNKNOWN. UNKNOWN. TRANSIENT TR FLAG ON CAPTAINS ND WITH FMC MENU ITEM MISSING FROM MCDU 1 AND 2. CONDITION SELF-RESOLVED QUICKLY. GROUNDED - YES. POWERED DOWN A/C, POWERED A/C UP
- [SDR ASAA2021122537002](https://openairdocs.org/sdr/ASAA2021122537002), Dec 25, 2021: UNKNOWN. UNKNOWN. BOTH FMCS BLANKED OUT FOR ABOUT 10 SECONDS DURING CRUISE FLIGHT THEN RETURNED TO NORMAL. GROUNDED - YES. VERIFIED RFMC SHOWS L FMC HAD INTERMITTENT FAULT FOR (P
- [SDR ASAA2021111236595](https://openairdocs.org/sdr/ASAA2021111236595), Nov 12, 2021: SENSOR. INOPERATIVE. #1 ENG CONTROL LIGHT ILLUMINATED DURING TAXI WITH ASSOCIATED MAINT LIGHT ILLUMINATION. GROUNDED - YES. INBOUND FLIGHT DECK EFFECTS DISPLAYED THE FOLLOWING FAULT
- [SDR ASAA2021103036459](https://openairdocs.org/sdr/ASAA2021103036459), Oct 30, 2021: FMC. FAULTY. NAV FLAG FMC RIGHT. GROUNDED - YES. FMC FAULT REVIEW SHOWED MULTIPLE FAULTS ON LEFT FMC, R & RD SAME PER 34-61-02. C/B'S PULLED/TAGGED & UNTAGGED/RESET (2). SYS

All 57: https://openairdocs.org/aircraft/N291BT/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/N291BT/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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