# N477AS: 2015 Boeing 737-990ER

- Status: Valid registration
- Airframe: [Boeing 737-990ER](https://openairdocs.org/model/boeing-737-990er) (registry code 13848CE, 222 seats)
- Engine: [CFM International CFM56-7B27E series](https://openairdocs.org/engine/cfm-international-cfm56-7b27e-series) (registry code 13078)
- Data sheets: [TCDS A16WE](https://openairdocs.org/tcds/A16WE) (The Boeing Company) (OpenAirDocs)
- Serial number: 40716
- Year built: 2015
- Type: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: June 13, 2015
- Certificate issued: June 25, 2015
- Expires: June 30, 2028
- Mode S code: A5DB2C
- 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=477AS
- Page: https://openairdocs.org/aircraft/N477AS

From the FAA registry file of October 21, 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 CFM56-7B27E model are included.

## ADs that may apply (OpenAirDocs): 109 in force

### Matched by airframe (Boeing 737-990ER)

- [AD 2026-20-14](https://openairdocs.org/ad/2026-20-14): Stabilizers · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Nov 23, 2026
- [AD 2026-20-13](https://openairdocs.org/ad/2026-20-13): Equipment/furnishings · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Nov 23, 2026
- [AD 2026-13-13](https://openairdocs.org/ad/2026-13-13): Navigation · Boeing 737-100 Series, 737-200 Series, 737-200C Series and 9 more. 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 2025-24-02](https://openairdocs.org/ad/2025-24-02): Landing gear · Boeing 737-700 Series, 737-800 Series, 737-900 Series and 1 more. Effective Dec 10, 2025
- [AD 2025-19-12](https://openairdocs.org/ad/2025-19-12): Landing Gear · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Nov 6, 2025
- [AD 2025-15-01](https://openairdocs.org/ad/2025-15-01): Fuselage · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Aug 25, 2025
- [AD 2025-07-03](https://openairdocs.org/ad/2025-07-03): Fuselage · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective May 13, 2025
- [AD 2025-04-03](https://openairdocs.org/ad/2025-04-03): Exhaust · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Apr 8, 2025
- [AD 2025-04-02](https://openairdocs.org/ad/2025-04-02): Powerplant · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Apr 8, 2025
- [AD 2025-04-01](https://openairdocs.org/ad/2025-04-01): Powerplant · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Apr 8, 2025
- [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 2024-16-10](https://openairdocs.org/ad/2024-16-10): Instruments · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Oct 28, 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 2024-06-01](https://openairdocs.org/ad/2024-06-01): Fuselage · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective May 22, 2024
- [AD 2023-13-05](https://openairdocs.org/ad/2023-13-05): Fuselage · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Oct 27, 2023
- [AD 2023-13-12](https://openairdocs.org/ad/2023-13-12): Oxygen · Boeing 737-100 Series, 737-200 Series, 737-200C Series and 17 more. Effective Sep 5, 2023
- [AD 2023-12-13](https://openairdocs.org/ad/2023-12-13): Navigation · Boeing 737-100 Series, 737-200 Series, 737-200C Series and 9 more. Effective Jun 21, 2023
- [AD 2023-06-15](https://openairdocs.org/ad/2023-06-15): Fuselage · Boeing 737-600 Series, 737-700 Series, 737-800 Series and 2 more. Effective May 30, 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 2023-04-17](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 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 2022-15-08](https://openairdocs.org/ad/2022-15-08): Information systems · Airbus A318-111, A318-112, A319-111 and 49 more. Effective Aug 12, 2022
- [AD 2022-11-13](https://openairdocs.org/ad/2022-11-13): Fuselage · Boeing 737-700 Series, 737-800 Series and 737-900ER Series. Effective Aug 3, 2022
- [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 2021-26-17](https://openairdocs.org/ad/2021-26-17): Equipment/furnishings · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Feb 15, 2022
- [AD 2021-18-17](https://openairdocs.org/ad/2021-18-17): Auto flight · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Dec 20, 2021
- [AD 2021-17-08](https://openairdocs.org/ad/2021-17-08): Fuselage · Boeing 737-800 Series and 737-900ER Series with STC ST04096CH. Effective Aug 17, 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 2021-11-24](https://openairdocs.org/ad/2021-11-24): Fuel · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Jul 20, 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 2021-07-17](https://openairdocs.org/ad/2021-07-17): Electrical power · Boeing 737-900ER Series. Effective May 25, 2021
- [AD 2021-02-14](https://openairdocs.org/ad/2021-02-14): Fuel · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Mar 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 2020-21-02](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 2020-18-13](https://openairdocs.org/ad/2020-18-13): Fuel · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Oct 29, 2020
- [AD 2020-16-51](https://openairdocs.org/ad/2020-16-51): Pneumatic · Boeing 737-300 Series, 737-400 Series, 737-500 Series and 6 more. Effective Aug 26, 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 2020-01-11](https://openairdocs.org/ad/2020-01-11): Air conditioning · Boeing 737-800 Series, 737-900 Series and 737-900ER Series. Effective Feb 21, 2020
- [AD 2019-19-10](https://openairdocs.org/ad/2019-19-10): Fuel · Boeing 737-300 Series, 737-400 Series, 737-500 Series and 21 more. Effective Jan 16, 2020
- [AD 2019-24-15](https://openairdocs.org/ad/2019-24-15): Equipment/ furnishings · Boeing 737-900ER Series. Effective Jan 14, 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 2019-14-02](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 2019-11-06](https://openairdocs.org/ad/2019-11-06): Fuselage · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Jul 17, 2019
- [AD 2019-11-03](https://openairdocs.org/ad/2019-11-03): Flight Controls · Boeing 737-700C Series, 737-800 Series and 737-900ER Series. Effective Jun 10, 2019
- [AD 2019-03-07](https://openairdocs.org/ad/2019-03-07): Wings · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Mar 29, 2019
- [AD 2019-01-03](https://openairdocs.org/ad/2019-01-03): Landing Gear · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Mar 19, 2019
- [AD 2018-26-06](https://openairdocs.org/ad/2018-26-06): Doors · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Feb 1, 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

### Matched by engine (CFM International CFM56-7B27E series)

- [AD 2023-05-05](https://openairdocs.org/ad/2023-05-05): Turbine Engine Compressor Section · CFM International CFM56-5B1, CFM56-5B1/2P, CFM56-5B1/3 and 98 more. Effective May 10, 2023
- [AD 2018-26-01](https://openairdocs.org/ad/2018-26-01): Turbine Engine Compressor Section · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 46 more. Effective Jan 10, 2019
- [AD 2018-09-51](https://openairdocs.org/ad/2018-09-51): Engine · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 46 more. Effective Jun 7, 2018
- [AD 2015-18-04](https://openairdocs.org/ad/2015-18-04): 73-tooth gearshaft located in the engine accessory gearbox (AGB) · CFM International CFM56-3, CFM56-7B20, CFM56-7B20/2 and 47 more. Effective Oct 20, 2015
- [AD 2015-04-02](https://openairdocs.org/ad/2015-04-02): Dual engine thrust instability event · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 46 more. Effective Mar 31, 2015
- [AD 2009-11-02](https://openairdocs.org/ad/2009-11-02): HPC 4-9 spools · CFM International CFM56-2, CFM56-2A, CFM56-2B and 109 more. Effective Jun 23, 2009

### Historical (superseded or no longer in force)

- [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 2022-05-04](https://openairdocs.org/ad/2022-05-04) (historical): Navigation · Boeing 737-100 Series, 737-200 Series, 737-200C Series and 9 more. Effective Feb 24, 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 2021-09-06](https://openairdocs.org/ad/2021-09-06) (historical): Fuselage · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Jun 8, 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 2019-25-17](https://openairdocs.org/ad/2019-25-17) (historical): Indicating/ recording system · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Dec 27, 2019
- [AD 2019-20-03](https://openairdocs.org/ad/2019-20-03) (historical): Information systems · Airbus A340-312, A340-313, A318-111 and 48 more. Effective Nov 19, 2019
- [AD 2019-22-10](https://openairdocs.org/ad/2019-22-10) (historical): Fuselage · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Nov 13, 2019
- [AD 2019-20-02](https://openairdocs.org/ad/2019-20-02) (historical): Fuselage · Boeing Airplane Company, Wichita Division 75 (Army PT-13), 737-600 Series, 737-700 Series and 4 more. Effective Oct 3, 2019
- [AD 2019-03-26](https://openairdocs.org/ad/2019-03-26) (historical): Equipment/furnishings · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Apr 8, 2019
- [AD 2017-16-05](https://openairdocs.org/ad/2017-16-05) (historical): Wings · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Sep 22, 2017
- [AD 2017-14-13](https://openairdocs.org/ad/2017-14-13) (historical): Equipment and Furnishings · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Aug 23, 2017
- [AD 2017-12-07](https://openairdocs.org/ad/2017-12-07) (historical): Air conditioning · Boeing 737-800 Series, 737-900 Series and 737-900ER Series. Effective Jul 20, 2017
- [AD 2016-18-01](https://openairdocs.org/ad/2016-18-01) (historical): Landing Gear · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Oct 5, 2016
- [AD 2016-13-16](https://openairdocs.org/ad/2016-13-16) (historical): Stabilizers · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Aug 12, 2016
- [AD 2015-19-03](https://openairdocs.org/ad/2015-19-03) (historical): Fuel Selector/Shutoff Valve · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Oct 21, 2015
- [AD 2015-16-01](https://openairdocs.org/ad/2015-16-01) (historical): Air Conditioning · Boeing 737-100 Series, 737-200 Series, 737-200C Series and 9 more. Effective Sep 15, 2015
- [AD 2013-26-08](https://openairdocs.org/ad/2013-26-08) (historical): Ice and Rain Protection · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Feb 10, 2014
- [AD 2013-18-09](https://openairdocs.org/ad/2013-18-09) (historical): Communications · Airbus A300 B2-1A, A300 B2-1C, A300 B2-203 and 137 more. Effective Oct 3, 2013
- [AD 2013-07-09](https://openairdocs.org/ad/2013-07-09) (historical): Oxygen · Boeing 737-700 Series, 737-700C Series, 737-800 Series and 4 more. Effective May 20, 2013
- [AD 2013-07-07](https://openairdocs.org/ad/2013-07-07) (historical): Stabilizers · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective May 20, 2013
- [AD 2012-19-11](https://openairdocs.org/ad/2012-19-11) (historical): Air Conditioning · Boeing 737-100 Series, 737-200 Series, 737-200C Series and 9 more. Effective Nov 7, 2012
- [AD 2010-17-19](https://openairdocs.org/ad/2010-17-19) (historical): Flight controls · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Sep 9, 2010
- [AD 2010-09-05](https://openairdocs.org/ad/2010-09-05) (historical): Flight controls · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Apr 29, 2010
- [AD 2010-06-51](https://openairdocs.org/ad/2010-06-51) (historical): Flight controls · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Apr 7, 2010
- [AD 2009-21-10](https://openairdocs.org/ad/2009-21-10) (historical): Oxygen · Airbus A300, Model B4-605R, A300, Model B4-620, A300, Model B4-622 and 138 more. Effective Dec 17, 2009
- [AD 2007-18-52](https://openairdocs.org/ad/2007-18-52) (historical): Main slat track downstop assemblies · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Sep 26, 2007
- [AD 2007-18-51](https://openairdocs.org/ad/2007-18-51) (historical): Main slat track downstop assembly · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 3 more. Effective Aug 25, 2007
- [AD 2021-10-09](https://openairdocs.org/ad/2021-10-09) (historical): Turbine Engine Compressor Section · CFM International CFM56-5B1, CFM56-5B1/2P, CFM56-5B1/3 and 82 more. Effective Jun 24, 2021
- [AD 2018-18-01](https://openairdocs.org/ad/2018-18-01) (historical): Turbine Engine Compressor Section · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 46 more. Effective Oct 16, 2018
- [AD 2018-10-11](https://openairdocs.org/ad/2018-10-11) (historical): Turbine Engine Compressor Section · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 46 more. Effective Jun 1, 2018
- [AD 2018-09-10](https://openairdocs.org/ad/2018-09-10) (historical): Turbine Engine Compressor Section · CFM International CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3 and 46 more. Effective May 14, 2018
- [AD 2013-26-01](https://openairdocs.org/ad/2013-26-01) (historical): Oil dynamic seal assembly · CFM International CFM56-3, CFM56-3B, CFM56-3C and 52 more. Effective Feb 3, 2014

All 142: https://openairdocs.org/aircraft/N477AS/ads.md

## Information bulletins (advisory) (15 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 AIR-21-12](https://openairdocs.org/saib/AIR-21-12): Thrust Reversers. Issued Aug 3, 2021
- [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
- [SAIB NM-18-18](https://openairdocs.org/saib/NM-18-18): Equipment/Furnishings - First Observer's Seat Cup Holder. Issued Jul 2, 2018
- [SAIB NM-17-17](https://openairdocs.org/saib/NM-17-17): Oxygen System. Issued Jun 19, 2017
- [SAIB NM-17-10](https://openairdocs.org/saib/NM-17-10): Maintenance Practices. Issued Apr 13, 2017
- [SAIB NM-16-21](https://openairdocs.org/saib/NM-16-21): Flight Controls. Issued Aug 8, 2016
- [SAIB NM-15-03](https://openairdocs.org/saib/NM-15-03): Flight Controls. Issued Nov 24, 2014
- [SAIB NM-15-02](https://openairdocs.org/saib/NM-15-02): Cabin Equipment/Furnishings. Issued Nov 6, 2014
- [SAIB NM-12-11](https://openairdocs.org/saib/NM-12-11): Equipment/Furnishings: Buffet/Galleys. Issued Jan 10, 2012
- [SAIB NM-08-24](https://openairdocs.org/saib/NM-08-24): Water/Waste: Freezing Potable Water Lines. Issued May 22, 2008
- [SAIB NM-07-47](https://openairdocs.org/saib/NM-07-47): Boeing Model 737 Series Forward Airstairs. Issued Sep 6, 2007
- [SAIB NM-06-56](https://openairdocs.org/saib/NM-06-56): . Issued Jul 19, 2006
- [SAIB NE-08-17R3](https://openairdocs.org/saib/NE-08-17R3): Turbine Section - Propulsion Technology LLC Unapproved Repair. Issued May 28, 2014
- [SAIB NE-08-17R2](https://openairdocs.org/saib/NE-08-17R2) (historical): Turbine Section - Propulsion Technology LLC Unapproved Repair. Issued Mar 7, 2011

## NTSB investigations (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB DCA16IA036](https://openairdocs.org/ntsb/DCA16IA036), Dec 19, 2015: Boeing 737 (N477AS), Seattle, WA, incident, no damage. Probable cause: the flight crew's misidentification of the taxiway as the landing runway.

## FAA accident and incident reports (1)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Incident 20151219023779I](https://openairdocs.org/incident/20151219023779I), Dec 19, 2015: 2015 Boeing 737-990ER (N477AS), Seattle, WA, No damage. On Saturday, December 19, 2015, at 0831 pacific standard time, Alaska Airlines flight 27, a Boeing 737-990ER, was cleared to land on runway 16 Center (16C) at…

## Service difficulty reports (175, newest 50)

As reported by operators and repair stations.

- [SDR ASAA2026071967477](https://openairdocs.org/sdr/ASAA2026071967477), Jul 19, 2026: LIGHT. DETACHED. FA REPORTS LIGHT FROM CEILING FELL OUT AND IS DANGLING (EMERGENCY LIGHT). GROUNDED - YES. REMOVED, REPLACED, AND TESTED EMERGENCY LIGHT AISLE LIGHT ABOVE ROW 25
- [SDR ASAA2025061558784](https://openairdocs.org/sdr/ASAA2025061558784), Jun 15, 2025: LENS. MISSING. EMERGENCY LIGHT ON CEILING NEAR ROW 21 MISSING COVER. GROUNDED - YES. EMERGENCY EXIT AISLE LIGHT AT ROW 21 LENS REPLACED REF AMM 33-51-03-960-803. ALL OPS CHECK
- [SDR ASAA2025020655849](https://openairdocs.org/sdr/ASAA2025020655849), Feb 6, 2025: DOOR. UNKNOWN. FA'S REPORT L1 DOOR DIFFICULT TO OPEN AND CLOSE. GROUNDED - YES. CLOSED FWD ENTRY DOOR, NO FAULTS NOTED. OPENED FWD ENTRY DOOR, NO FAULTS NOTED REF AMM 52-11-00
- [SDR ASAA2024120354283](https://openairdocs.org/sdr/ASAA2024120354283), Dec 3, 2024: POWER SUPPLY. NO TEST. EMERGENCY LIGHTS ASSOCIATED WITH BATTERY PACK M2626 ARE INOP. GROUNDED - YES. REMOVED AND REPLACED POWER SUPPLY M2626 AND OPS CHECK GOOD IAW B737 AMM 33-51-06. 
- [SDR ASAA2024120354262](https://openairdocs.org/sdr/ASAA2024120354262), Dec 3, 2024: POWER SUPPLY. NO TEST. EMERGENCY LIGHTS ASSOCIATED WITH BATTERY PACK M1695 ARE INOP. GROUNDED - YES. REMOVED AND REPLACED BATTERY PACK SUPPLY M1695 S/N 123358 AND OPERATIONAL TEST PER
- [SDR ASAA2024120354261](https://openairdocs.org/sdr/ASAA2024120354261), Dec 3, 2024: POWER SUPPLY. NO TEST. EMERGENCY LIGHTS ASSOCIATED WITH BATTERY PACK M1676 ARE INOP. GROUNDED - YES. REMOVED AND REPLACED POWER SUPPLY M1676 S/N 24289 AND OPS CHECK GOOD IAW B737 AMM 
- [SDR ASAA2024120354260](https://openairdocs.org/sdr/ASAA2024120354260), Dec 3, 2024: POWER SUPPLY. NO TEST. EMERGENCY LIGHTS ASSOCIATED WITH BATTERY PACK M2335 ARE INOP. GROUNDED - YES. REMOVED AND REPLACED BATTERY PACK M2335 S/N 122986 AND OPERATIONAL TEST PERFORMED 
- [SDR ASAA2024111554258](https://openairdocs.org/sdr/ASAA2024111554258), Nov 15, 2024: WEB. CORRODED. AFT CARGO PIT THRESHOLD WEB HAS MULTIPLE SPOTS OF CORROSION. GROUNDED - YES. REMOVED CORROSION FROM AFT CARGO PIT THRESHOLD WEB. ORIG .050",REMOVED.007" REMAINI
- [SDR ASAA2024111554257](https://openairdocs.org/sdr/ASAA2024111554257), Nov 15, 2024: WEB. CORRODED. FWD CARGO PIT THRESHOLD WEB HAS MULTIPLE SPOTS OF CORROSION. GROUNDED - YES. REMOVED CORROSION ORIGINAL MATERIAL THICK .045" REMOVED .009" REMAINING .036" FOUND
- [SDR ASAA2024111254284](https://openairdocs.org/sdr/ASAA2024111254284), Nov 12, 2024: DOUBLER. GOUGED. WATER SERVICE DOOR AFT LATCH CONTACT AREA ON INTERNAL SURFACE OF CUTOUT IS GOUGED. GROUNDED - YES. REMOVED AND REPLACED WATER SERVICE DOOR DOUBLER AND COMPLIED 
- [SDR ASAA2024111054282](https://openairdocs.org/sdr/ASAA2024111054282), Nov 10, 2024: POWER SUPPLY. NO TEST. EMERGENCY LIGHTS ASSOCIATED WITH POWER SUPPLY M2816 ARE INOP. GROUNDED - YES. REMOVED AND REPLACED POWER SUPPLY M2816 AND OPERATIONAL TEST PERFORMED SUCCESSFULL
- [SDR ASAA2024111054281](https://openairdocs.org/sdr/ASAA2024111054281), Nov 10, 2024: POWER SUPPLY. NO TEST. EMERGENCY LIGHTS ASSOCIATED WITH POWER SUPPLY M2627 ARE INOP. GROUNDED - YES. REMOVED AND REPLACED POWER SUPPLY M2627 AND OPS CHECK GOOD IAW B737 AMM 33-51-06. 
- [SDR ASAA2024111054259](https://openairdocs.org/sdr/ASAA2024111054259), Nov 10, 2024: POWER SUPPLY. NO TEST. EMERGENCY LIGHTS ASSOCIATED WITH POWER SUPPLY M1675 ARE INOP. GROUNDED - YES. REMOVED AND REPLACED POWER SUPPLY M1675 AND OPERATIONAL TEST PERFORMED SUCCESSFULL
- [SDR ASAA2024081751916](https://openairdocs.org/sdr/ASAA2024081751916), Aug 17, 2024: BATTERY PACK. DISCHARGED. DURING T/C 78233008, FOUND R2 DOOR OVERDOOR EXIT SIGN & EXIT INDICATOR SIGN INOP. GROUNDED - YES. REMOVED & REPLACED EMERGENCY LIGHTING BATTERY PACK PER AMM 33-
- [SDR ASAA2024011047256](https://openairdocs.org/sdr/ASAA2024011047256), Jan 10, 2024: POWER SUPPLY. NO TEST. WHILE PERFORMING T/C 78233001, AFT GALLEY LH EMERGENCY LIGHTS FAILED CAPACITY CHECK. GROUNDED - YES. REPLACED AFT GALLEY L/H EMERGENCY LIGHT BATTERY PACK PER AM
- [SDR ASAA2023091345130](https://openairdocs.org/sdr/ASAA2023091345130), Sep 13, 2023: UNKNOWN. UNKNOWN. AFTER ENG START FWD + R SIDE WINDOW OVERHEAT LIGHTS ILLUMINATED GROUNDED - YES. RESET PER QRH
- [SDR ASAA2023073144326](https://openairdocs.org/sdr/ASAA2023073144326), Jul 31, 2023: POWER SUPPLY. MALFUNCTIONED. PER TASK CARD 78233008 " EMERGENCY LIGHTS" CHECK FOUND 2 L/H OVER WING EMERGENCY SLIDE LIGHTS INOP. GROUNDED - YES. RELAMPED INOP BULBS PER AMM 33-51-04. NO HEL
- [SDR ASAA2023062943851](https://openairdocs.org/sdr/ASAA2023062943851), Jun 29, 2023: UNKNOWN. UNKNOWN. WHILE COMPLETING TASK CARD 78273000 FOUND #2 ENG FAULT CODE 73-11272 THE ALTERNATOR VOLTAGE INPUT TO THE EEC OUT OF RANGE SHORT TIME FAULT. GROUNDED - YES. ON D
- [SDR ASAA2023061943699](https://openairdocs.org/sdr/ASAA2023061943699), Jun 19, 2023: UNKNOWN. UNKNOWN. #2 ENG HAS FAULT 75-10832 T3 SIGNAL IS OUT OF RANGE. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023061533572](https://openairdocs.org/sdr/ASAA2023061533572), Jun 13, 2023: UNKNOWN. UNKNOWN. IN CRUISE FL340, A AUTOPILOT KICKED OFF IN SMOOTH AIR. A AUTOPILOT REENGAGED NORMAL. GROUNDED - YES. ACCOMPLISHED LAND VERIFY TEST. TEST NORMAL. REF B737-900 AM
- [SDR ASAA2023060843495](https://openairdocs.org/sdr/ASAA2023060843495), Jun 8, 2023: UNKNOWN. UNKNOWN. SATCOM LOCKOUT GROUNDED - YES. SATCOM LOCKOUT QRH PROCEDURE SUCCESSFULLY PERFORMED.
- [SDR ASAA2023060743494](https://openairdocs.org/sdr/ASAA2023060743494), Jun 7, 2023: UNKNOWN. UNKNOWN. SATCOM LOCK-UP. GROUNDED - YES. PERFORMED SATCOM LOCK-UP CB RESET PROCEDURE PER QRH. CPDLC WAS RESTORED AFTER 25 MINUTES.
- [SDR ASAA2023053143451](https://openairdocs.org/sdr/ASAA2023053143451), May 31, 2023: HEAT EXCHANGER. LEAKING. #2 ENGINE HAS FUEL DRIPPING FROM IT. GROUNDED - YES. ACCOMPLISHED IDLE LEAK CHECK AND FOUND FUEL DRIPPING FROM MAIN FUEL/OIL HEAT EXCHANGER AT 9 DPM. REMOVED AN
- [SDR ASAA2023052843415](https://openairdocs.org/sdr/ASAA2023052843415), May 28, 2023: SENSOR. FAILED. WHILE ACCOMPLISHING ASA T/C 78273000 ENG2 BITE TEST RECENT FAULTS LONG TIME MSG NBR : 75-10832 THE T3 SIGNAL IS OUT OF RANGE FLT LEG 0,1 & 3 WAS SEEN. GROUNDED 
- [SDR ASAA2023050843564](https://openairdocs.org/sdr/ASAA2023050843564), May 8, 2023: SENSOR. FAILED. WHILE PERFORMING ASA T.C. 78273000, #2 ENGINE HAS LONG TIME FAULT 75-10832. THE T3 SIGNAL IS OUT OF RANGE ON MULTIPLE LEGS IN HISTORY. GROUNDED - YES. ACCOMPLIS
- [SDR ASAA2023050343116](https://openairdocs.org/sdr/ASAA2023050343116), May 3, 2023: EEC. FAULTY. WHILE PERFORMING TASK CARD 78273000, #2 ENG HAS LONG TIME FAULT 77-20862, THE BOTTOM LEFT EGT SINGAL (T495S3) IS OUT OF RANGE ON 2 LEGS. GROUNDED - YES. REMOVED
- [SDR ASAA2023050343115](https://openairdocs.org/sdr/ASAA2023050343115), May 3, 2023: EEC. FAULTY. WHILE PERFORMING ASA TASK CARD 78273000, #2 ENG HAS LONG TIME FAULT 77-20872, THE TOP LEFT EGT SINGAL (T495S4) IS OUT OF RANGE ON 2 LEGS. GROUNDED - YES. REMOVE
- [SDR ASAA2023050343114](https://openairdocs.org/sdr/ASAA2023050343114), May 3, 2023: EEC. FAULTY. WHILE PERFORMING TASK CARD 78273000 #2 ENG HAS ECONOMIC FAULT 75-20362 THIS HPTACC POSITION SIGNAL IS OUT OF RANGE ON 2 LEGS. GROUNDED - YES. REMOVED #2 ENG EEC
- [SDR ASAA2023050343113](https://openairdocs.org/sdr/ASAA2023050343113), May 3, 2023: EEC. FAULTY. WHILE PERFORMING T.C. #78273000, #2 ENG HAS LONG TIME FAULT 75-20832, THE T3 SIGNAL IS OUT OF RANGE, ON 2 LEGS. GROUNDED - YES. REMOVED #2 ENG EEC REF B737-900 
- [SDR ASAA2023050343112](https://openairdocs.org/sdr/ASAA2023050343112), May 3, 2023: EEC. FAULTY. WHILE PERFORMING T.C. #78273000, #2 ENG HAS LONG TIME FAULT 75-20822, THE T25 SIGNAL IS OUT OF RANGE, ON 2 LEGS. GROUNDED - YES. REMOVED #2 ENG EEC REF B737-900
- [SDR ASAA2023050343111](https://openairdocs.org/sdr/ASAA2023050343111), May 3, 2023: EEC. FAULTY. WHILE PERFORMING T.C. 78273000, #2 ENG HAS LONG TIME FAULT 75-20592 THE TBV POSITION SIGNAL IS OUT OF RANGE, ON 2 LEGS. GROUNDED - YES. REMOVED #2 ENG EEC REF B
- [SDR ASAA2023050343110](https://openairdocs.org/sdr/ASAA2023050343110), May 3, 2023: EEC. FAULTY. WHILE PERFORMING T.C. # 78273000, #2 ENG HAS LONG TIME FAULT 75-20442, THE VBV POSITION SIGNAL IS OUT OF RANGE, ON 2 LEGS. GROUNDED - YES. REMOVED #2 ENG EEC RE
- [SDR ASAA2023050343109](https://openairdocs.org/sdr/ASAA2023050343109), May 3, 2023: EEC. FAULTY. WHILE PERFORMING T.C. # 78273000, #2 ENG HAS LONG TIME FAULT 75-10832, THE T3 SIGNAL IS OUT OF RANGE, ON MULTIPLE LEGS IN HISTORY. GROUNDED - YES. REMOVED #2 EN
- [SDR ASAA2023050343108](https://openairdocs.org/sdr/ASAA2023050343108), May 3, 2023: EEC. FAULTY. WHILE PERFORMING T.C. #782730000, #2 ENG HAS ECONOMIC FAULT 75-20542, THE LPTACC POSITION SIGNAL IS OUT RANGE, ON 2 LEGS. GROUNDED - YES. REMOVED #2 ENG EEC REF
- [SDR ASAA2023050343107](https://openairdocs.org/sdr/ASAA2023050343107), May 3, 2023: EEC. FAULTY. WHILE PERFORMING ASA T.C. #78273000, #2 ENG HAS FAULT 75-20392, THE VSV POSITION SIGNAL IS OUT OF RANGE, ON 2 LEGS IN HISTORY. LONG TIME. GROUNDED - YES. REMOVE
- [SDR ASAA2023050243106](https://openairdocs.org/sdr/ASAA2023050243106), May 2, 2023: UNKNOWN. UNKNOWN. ON TAXI IN #2 EEC ENGINE CONTROL LIGHT ILLUMINATED. GROUNDED - YES. EEC BITE LOGGED FAULT 75-30832 T3 SIGNAL OUT OF RANGE GVI ENG 2 EEC FOUND T3 CONNECTOR AND J
- [SDR ASAA2023050143089](https://openairdocs.org/sdr/ASAA2023050143089), May 1, 2023: FUEL HEATER. LEAKING. DURING ACTUATORS TEST ON ENGINE 2 FOUND SERVO FUEL HEATER LEAKING. GROUNDED - YES. R/R SERVO FUEL HEATER PER B737-900 AMM 73-11-07-400-801-F00.
- [SDR ASAA2023050143066](https://openairdocs.org/sdr/ASAA2023050143066), May 1, 2023: SENSOR. OUT OF RANGE. "ENGINE CONTROL" LIGHT ON OVERHEAD ILLUMINATED ON ENGINE #2 AFTER LANDING. GROUNDED - YES. REMOVED T3 SENSOR REF B737-900 AMM 73-21-07. INSTALLED ENGINE 2 T3 SE
- [SDR ASAA2023042042960](https://openairdocs.org/sdr/ASAA2023042042960), Apr 20, 2023: UNKNOWN. UNKNOWN. AUTO PILOT "A" DISCONNECTED IN CRUISE FLT, RE-ENGAGED, AFTER 5 MINUTES AUTOPILOT DISCONNECTED, SWITCHED TO AUTO "B" WORKS FINE. GROUNDED - YES. REF B737-900 FIM
- [SDR ASAA2023041342877](https://openairdocs.org/sdr/ASAA2023041342877), Apr 13, 2023: MOTOR. FAULTED. AUTOPILOT A DISCONNECTED IN CRUISE FLIGHT. GROUNDED - YES. INSPECTED AND FOUND FAULT MESSAGE 22-11186 SEVERAL TIMES IN AUTO PILOT DISCONNECT AND DFCS LOGGED FAU
- [SDR ASAA2023041242836](https://openairdocs.org/sdr/ASAA2023041242836), Apr 12, 2023: UNKNOWN. UNKNOWN. AT FL360 ENGAGGED "A" AUTOPILOT. AFTER 5 MINUTES, AUTOPILOT DISENGAGED. RE-ENGAGED "A" AUTOPILOT, AND AFTER 5 MINUTES, AUTOPILOT DISENGAGED AGAIN. ENGAGED "B" A
- [SDR ASAA2023022442077](https://openairdocs.org/sdr/ASAA2023022442077), Feb 24, 2023: LENS. MISSING. EMERGENCY AISLE LIGHT LENS MISSING (INOP) ABOVE ROW 30ABC. GROUNDED - YES. REPLACED AISLE EMERGENCY LIGHT LENS, REF B737-900 AMM 33-51-03.
- [SDR ASAA2023021342420](https://openairdocs.org/sdr/ASAA2023021342420), Feb 13, 2023: SENSOR. OUT OF RANGE. WHILE ACCOMPLISHING ASA T/C 78273000 FOUND LONG TIME FAULT ON #2 ENGINE. "T3 SIGNAL IS OUT OF RANGE" MESSAGE # 75-10832. GROUNDED - YES. REPLACED THE T3 SENSOR 
- [SDR ASAA2022122741256](https://openairdocs.org/sdr/ASAA2022122741256), Dec 27, 2022: SATCOM. LOCKED. SATCOM LOCKED UP. GROUNDED - YES. CIRCUIT BREAKER CYCLED TO CLEAR LOCKUP.
- [SDR ASAA2022122641263](https://openairdocs.org/sdr/ASAA2022122641263), Dec 26, 2022: FMC. MALFUNCTIONED. AT CRUISE RECEIVED 'VTK" AND NO FMC DATA ON CA SIDE. AFTER A FEW SECONDS "VTK" EXTINGUISHED AND FMC DATA CAME BACK AND WE RESUMED NORMAL OPERATIONS. GROUNDED - 
- [SDR ASAA2022122641225](https://openairdocs.org/sdr/ASAA2022122641225), Dec 26, 2022: WARNING LIGHT. FALSE INDICATION. ON RECALL MASTER CAUTION AND "AIR CON " LIGHT ILL ZONE TEMP LIGHT ABOVE CONTROLLER CABIN ILLUMINATED LIGHTS EXTINGUISHED OM MASTER CAUTION RESET. GROUNDED - YES
- [SDR ASAA2022121341118](https://openairdocs.org/sdr/ASAA2022121341118), Dec 13, 2022: LAMP. INOPERATIVE. RH EMERGENCY LIGHT AFT OF WING INOPERATIVE. GROUNDED - YES. REPLACED THE RT EMERGENCY LIGHT LAMP IAW AMM 33-51-04. OPS CHECKED GOOD.
- [SDR ASAA2022111540779](https://openairdocs.org/sdr/ASAA2022111540779), Nov 15, 2022: WARNING MESSAGE. FALSE ACTIVATION. SAT PROMPT NOT DISPLAYED ON MCDU PERFORMED QRH SAT LOCK UP PROCEDURE AND SAT RESTORED. GROUNDED - YES. CONFIRMED RESET SATCOM OP OK REF B737-900 AMM 23-15-00.
- [SDR ASAA2022102940562](https://openairdocs.org/sdr/ASAA2022102940562), Oct 29, 2022: PUMP. FAILED. RT CTR FUEL PUMP LOW PRESSURE LT ILLUMINATED. GROUNDED - YES. REMOVED AND REPLACED OF RT CTR FUEL PUMP MOTOR IMPELLER.
- [SDR ASAA2022102940545](https://openairdocs.org/sdr/ASAA2022102940545), Oct 29, 2022: PRESSURE SWITCH. FAULTED. IN LEVEL FLIGHT W/1.6 CTR TANK R CTR FUEL PUMP LOW PRESSURE LIGHT REMAINS ILLUMINATED. GROUNDED - YES. REMOVED AND REPLACED RH CENTER FUEL PUMP PRESSURE SWITCH 

All 175: https://openairdocs.org/aircraft/N477AS/reports.md

## Related

- Other Boeing 737-990ER aircraft: https://openairdocs.org/model/boeing-737-990er/aircraft.md
- STCs for the Boeing 737-990ER: https://openairdocs.org/model/boeing-737-990er/stcs.md
- The CFM International CFM56-7B27E series engine: https://openairdocs.org/engine/cfm-international-cfm56-7b27e-series.md

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