# N474AS: 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: 40715
- Year built: 2015
- Type: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: June 27, 2015
- Certificate issued: July 7, 2015
- Expires: July 31, 2028
- Mode S code: A5D007
- 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=474AS
- Page: https://openairdocs.org/aircraft/N474AS

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/N474AS/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

None matched to N474AS.

## FAA accident and incident reports

None matched to N474AS.

## Service difficulty reports (244, newest 50)

As reported by operators and repair stations. Reports filed since October 11, 2006, when the mark's previous registration was cancelled.

- [SDR ASAA2026092068844](https://openairdocs.org/sdr/ASAA2026092068844), Sep 20, 2026: POWER SUPPLY. INOPERATIVE. EMERGENCY LIGHTS AT ROW 9 DEF AND 13 DEF NOT ILLUMINATED. GROUNDED - YES. REMOVED AND INSTALLED SERVICEABLE EMERG LIGHTS POWER SUPPLY AND BATTERY PACK S/N 12274
- [SDR ASAA2026081568666](https://openairdocs.org/sdr/ASAA2026081568666), Aug 15, 2026: SUPPORT. CORRODED. UPON REMOVAL OF DAMAGED LAV MOUNT FITTINGS FOUND LAV SUPPORT LBL 20 STA 947 TO 967 CORRODED. GROUNDED - YES. REMOVED CORROSION & FOUND OUT OF LIMITS IAW BOEING 
- [SDR ASAA2026081468793](https://openairdocs.org/sdr/ASAA2026081468793), Aug 14, 2026: FLOORBEAM. CORRODED. UPON REMOVAL OF DAMAGED LAV MOUNT FITTINGS FOUND CORROSION ON BS 947 FLOORBEAM UPPER CAP AT ALL 4 LAV MOUNT FITTING LOCATIONS. GROUNDED - YES. REPAIRED FLOORBEA
- [SDR ASAA2026081468792](https://openairdocs.org/sdr/ASAA2026081468792), Aug 14, 2026: SILL DRAIN. CORRODED. R2 MOPSILL HAS MULTIPLE AREAS OF CORROSION. GROUNDED - YES. REMOVED & REPLACED R2 MOP SILL CHORD IAW BOEING SRM 51-40-02.
- [SDR ASAA2026081468665](https://openairdocs.org/sdr/ASAA2026081468665), Aug 14, 2026: MOUNT. CORRODED. UPON REMOVAL OF DAMAGED LAV MOUNT FITTINGS FOUND LAV SUPPORT RBL 20 BETWEEN STA 947 AND 967 TO BE CORRODED WHERE MOUNT SITS. GROUNDED - YES. REMOVED CORROSION &
- [SDR ASAA2026081468664](https://openairdocs.org/sdr/ASAA2026081468664), Aug 14, 2026: MOUNT. CORRODED. UPON REMOVAL OF DAMAGED LAV MOUNT FITTINGS FOUND INTERCOSTAL RBL50 BETWEEN STA 927 AND 947 TO BE CORRODED WHERE MOUNT SITS. GROUNDED - YES. REMOVED CORROSION & 
- [SDR ASAA2026081468663](https://openairdocs.org/sdr/ASAA2026081468663), Aug 14, 2026: MOUNT. CORRODED. UPON REMOVAL OF DAMAGED LAV MOUNT FITTINGS FOUND LAV SUPPORT LBL 50 BETWEEN BS 947 & 967 TO BE CORRODED WHERE MOUNT ATTACHES. GROUNDED - YES. REMOVED CORROSION 
- [SDR ASAA2026081468609](https://openairdocs.org/sdr/ASAA2026081468609), Aug 14, 2026: MOUNT. CORRODED. UPON REMOVAL OF DAMAGED LAV MOUNT FITTINGS FOUND LAV SUPPORT RBL50 BETWEEN STA 947 AND 967 TO BE CORRODED WHERE MOUNT ATTACHES. GROUNDED - YES. REMOVED CORROSIO
- [SDR ASAA2026081368735](https://openairdocs.org/sdr/ASAA2026081368735), Aug 13, 2026: ATTACH ANGLE. CORRODED. AFT PIT FWD SHIELD ATTACH ANGLES 2 EA ARE CORRODED. GROUNDED - YES. REMOVED & REPLACED 2 EA AFT PIT FWD SHIELD ATTACH ANGLES IAW SRM 51-40-02-0G-0 STEP 4, 5, 7.
- [SDR ASAA2026080568790](https://openairdocs.org/sdr/ASAA2026080568790), Aug 5, 2026: TRANSITION PANEL. CORRODED. AFT CARGO PIT RT TRANSITION HAS MULTIPLE SPOTS OF CORROSION AT BS 727-767. GROUNDED - YES. REMOVED DAMAGE, FOUND TO BE OUT OF LIMITS, REPAIRED RT TRANSITION FRO
- [SDR ASAA2026080568736](https://openairdocs.org/sdr/ASAA2026080568736), Aug 5, 2026: TRANSITION PANEL. CORRODED. FWD CARGO PIT LEFT TRANSITION AT STA 500 TO 500L HAS CORROSION. GROUNDED - YES. REPAIRED FWD CARGO PIT RT TRANSITION STA 500H+9 TO 500L IAW SRM 53-00-53-2R-5, R
- [SDR ASAA2026080568718](https://openairdocs.org/sdr/ASAA2026080568718), Aug 5, 2026: TRANSITION PANEL. CORRODED. AFT CARGO BAY, LT TRANSITION HAS MULTIPLE SPOTS OF CORROSION AT BS 727 - 847. GROUNDED - YES. REMOVED CORROSION, FOUND OUT OF LIMITS, REPAIRED IAW SRM 53-00-53-
- [SDR ASAA2026080568607](https://openairdocs.org/sdr/ASAA2026080568607), Aug 5, 2026: BAFFLE. CRACKED. FWD CARGO PIT LT AT BS 500K FWD SIDE BAFFLE CLIP CRACKED. GROUNDED - YES. REMOVED AND INSTALLED NEW CILP ON FWD CARGO COMPT LH SIDE STA 500K IAW B737-900 SRM 51
- [SDR ASAA2026080568498](https://openairdocs.org/sdr/ASAA2026080568498), Aug 5, 2026: TRANSITION PANEL. CORRODED. FWD CARGO PIT RT TRANSITION AT STA 500E TO 500L HAS CORROSION. GROUNDED - YES. REPAIRED FWD CARGO PIT RT TRANSITION BS 500+9 TO 500L IAW B737-900ER SRM 53-00-53
- [SDR ASAA2026080568336](https://openairdocs.org/sdr/ASAA2026080568336), Aug 5, 2026: SHIELD. CORRODED. AFT CARGO FWD SHIELD HAS CORROSION. GROUNDED - YES. REMOVED CORROSION & FOUND OUT OF LIMITS IAW BOEING SRM 53-60-15-1A-1 STEP 4G(2), REMOVED & REPLACED SHIELD I
- [SDR ASAA2025080559947](https://openairdocs.org/sdr/ASAA2025080559947), Aug 5, 2025: BRAKE PADS. DAMAGED. ON TAKEOFF ROLL EXTREMELY STRONG VIBRATION FELT AT APPROX 60 KNOTS, TAKEOFF ABORTED. GROUNDED - YES. INSPECTED ALL 4 ANTI-SKID TRANSDUCERS, NO DEFECT NOTED. ACC
- [SDR ASAA2024100153408](https://openairdocs.org/sdr/ASAA2024100153408), Oct 1, 2024: BATTERY. INOPERATIVE. FLIGHT DECK EMERGENCY DOME LIGHT INOP GROUNDED - YES. REPLACED EMERGENCY WITH SERVICEABLE LIGHTS BATTERY AND FUSE. OP CHECKS GOOD IAW B737-900 AMM 33-51-06-960-
- [SDR ASAA2024093052909](https://openairdocs.org/sdr/ASAA2024093052909), Sep 30, 2024: POWER SUPPLY. INOPERATIVE. EMERGENCY LIGHT ABOVE BIN AT ROW 27CBA DOES NOT WORK. GROUNDED - YES. REMOVED & REPLACED EMERGENCY LIGHT BATTERY PACK IAW B737-900 AMM 33-51-06-960-805 OPS CK G
- [SDR ASAA2024091052648](https://openairdocs.org/sdr/ASAA2024091052648), Sep 10, 2024: TRANSITION PANEL. CORRODED. FWD CARGO R/H TRANSITION STA 500D TO 500I HAS AREAS OF CORROSION. GROUNDED - YES. REMOVED DAMAGE WITH SURFACE BLEND FOUND TO BE OUT OF LIMITS AND REPAIRED R/H T
- [SDR ASAA2024090553403](https://openairdocs.org/sdr/ASAA2024090553403), Sep 5, 2024: BATTERY. INOPERATIVE. EXIT ROW LIGHTS AT ROW, 25 AND 29 INOP. (FCF INDUCTION FLIGHT DISCREPANCY ITEM #15) GROUNDED - YES. REMOVED AND INSTALLED SERVICEABLE EMERGENCY BATTERY, OPS CK 
- [SDR ASAA2024062850659](https://openairdocs.org/sdr/ASAA2024062850659), Jun 28, 2024: BATTERY PACK. DISCHARGED. R1 AND RH AFT CABIN EMERGENCY LIGHTS NEEDS FULL CHARGE AND OPS CHECK AFTER 90 MINUTES. GROUNDED - YES. PERFORMED OPS CHECK OF THE R1 DOOR EMERGENCY LIGHTS AND T
- [SDR ASAA2024062850658](https://openairdocs.org/sdr/ASAA2024062850658), Jun 28, 2024: CHARGER. FAILED. LH OVERDOOR EXIT SIGN NOT TURN ON DURING EMERGENCY LIGHTS OPERATIONAL CHECK TASK CARD 78233008. ALSO LH FWD MID AND LH AFT MID CABIN EMERGENCY LIGHT DO NOT TURN
- [SDR ASAA2024030848328](https://openairdocs.org/sdr/ASAA2024030848328), Mar 8, 2024: FILTER. CONTAMINATED. CLIMBING THROUGH 6000' FA'S CALLED TO REPORT FUMES ON CABIN AND FEELING LIGHT HEADACHE. FO SAID HE NOTICED ODOR CLIMBING THROUGH 3000' FOR ABOUT 15 SECONDS THAT
- [SDR ASAA2023121746793](https://openairdocs.org/sdr/ASAA2023121746793), Dec 17, 2023: BATTERY PACK. NO TEST. PERFORMING T/C 78233001, FOUND AFT GALLEY L/H OVHD EMERGENCY BATT PACK (M1673) + AFT GALLEY R/H OVHD EMERGENCY BATT PACK (M1672) FAILED BATT CAPACITY CHECK. GRO
- [SDR ASAA2023103045928](https://openairdocs.org/sdr/ASAA2023103045928), Oct 30, 2023: UNKNOWN. UNKNOWN. WHILE PERFORMING TASK CARD 78273000, FOUND FAULT CODE 77-20871 THE TOP LEFT EGT SIGNAL (T495S4) IS OUT OF RANGE. ECONOMIC FAULT #1 ENG. GROUNDED - YES. ON DEFER
- [SDR ASAA2023102845894](https://openairdocs.org/sdr/ASAA2023102845894), Oct 28, 2023: UNKNOWN. UNKNOWN. SAT COMM MISSING ON MCDU MENU PAGE. GROUNDED - YES. RESET PER QRH SATCOM LOCK UP PROCEDURE SUCCESSFULLY.
- [SDR ASAA2023101645704](https://openairdocs.org/sdr/ASAA2023101645704), Oct 16, 2023: UNKNOWN. UNKNOWN. SAT RESET PERFORMED GROUNDED - YES. SAT RESET SUCCESSFUL.
- [SDR ASAA2023100445433](https://openairdocs.org/sdr/ASAA2023100445433), Oct 4, 2023: CONTROL PANEL. MALFUNCTIONED. MCP SPEED WINDOW HAD A FEW WHITE DOTS DISPLAYED. GROUNDED - YES. (RESOLVED ON W/O: 1971086 TASKCARD: N/R-00002 ) REMOVED & REPLACED DFCS MCP REF AMM 22-11-34-40
- [SDR ASAA2023100145405](https://openairdocs.org/sdr/ASAA2023100145405), Oct 1, 2023: UNKNOWN. UNKNOWN. LOST SAT ON THE MCDU MENU PAGE. GROUNDED - YES. PERFORMED SATCOM LOCK-UP QRH TO RESTORE SAT ON THE MCDU MENU PAGE. VERIFIED SATCOM IS NOT IN THE LOCK-UP STATE R
- [SDR ASAA2023092745346](https://openairdocs.org/sdr/ASAA2023092745346), Sep 27, 2023: UNKNOWN. UNKNOWN. PWS FAIL FLAG ON ND AFTER PASSING 80 KTS ON T/O ROLL IT DISAPPEARED AROUND 1000 AGL, DID NOT ILLUMINATE AGAIN DURING FLIGHT. GROUNDED - YES. PERFORMED WEATHER R
- [SDR ASAA2023091845208](https://openairdocs.org/sdr/ASAA2023091845208), Sep 18, 2023: PACKING. LEAKING. OIL CAP ORING LEAKING ON #2 ENG. GROUNDED - YES. REMOVED AND REPLACED #2 ENG OIL CAP ORING REF AMM 79-11-01-300-801 F00. NO LEAKS NOTED AT THIS TIME.
- [SDR ASAA2023091545155](https://openairdocs.org/sdr/ASAA2023091545155), Sep 15, 2023: UNKNOWN. UNKNOWN. ENG #1 LOOP A INOP. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023091145056](https://openairdocs.org/sdr/ASAA2023091145056), Sep 11, 2023: UNKNOWN. UNKNOWN. #2 ENG FIRE LOOP B SHOWS FAULT DURING TEST, A LOOP TESTS FINE. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023090744993](https://openairdocs.org/sdr/ASAA2023090744993), Sep 7, 2023: UNKNOWN. UNKNOWN. WHIE ACCOMPLISHING T/C 78273000 FOUND #1 ENGINE FAULT CODE 77-20871 THE TOP LEFT EGT SIGNAL (T495S4) IS OUT OF RANGE ECONOMIC FAULT. GROUNDED - YES. NO RECENT F
- [SDR ASAA2023083044849](https://openairdocs.org/sdr/ASAA2023083044849), Aug 30, 2023: LENS. MISSING. WHILE PERFORMING T/C 78233008 FOUND MID CABIN CEILING EMERGENCY LIGHT MISSING LENS. GROUNDED - YES. REPLACED LENS PER MM 33-51-03-960-803, OPS GOOD. CLEARS MEL 
- [SDR ASAA2023072944295](https://openairdocs.org/sdr/ASAA2023072944295), Jul 29, 2023: UNKNOWN. UNKNOWN. SATCOM LOCKUP GROUNDED - YES. QRH PROCEDURE PERFORMED. NORMAL OPS RESTORED.
- [SDR ASAA2023071844122](https://openairdocs.org/sdr/ASAA2023071844122), Jul 18, 2023: POWER SUPPLY. INOPERATIVE. EMERGENCY EXIT SIGN LIGHT OUT CENTER AISLE. GROUNDED - YES. REPLACED CENTER AISLE EMERGENCY EXIT LIGHT ASSY PER AMM 33-51-01. OPS CHK FAILED BLONG 07/19/2023 RE
- [SDR ASAA2023062743757](https://openairdocs.org/sdr/ASAA2023062743757), Jun 27, 2023: UNKNOWN. UNKNOWN. REF T/C N8420001 ENGINE FIRE DETECTORS/HARNESS INSPECTION, FOUND MW0326 CORE FIRE DETECTION HARNESS BRAIDED COVER GROUNDING BRAID BROKEN/MISSING AT RIGHT CORE F
- [SDR ASAA2023060543469](https://openairdocs.org/sdr/ASAA2023060543469), Jun 5, 2023: SPACER. WORN. #2 ENGINE SPACERS WORN BEYOND LIMITS 14. GROUNDED - YES. REPLACED 14 ENGINE SPACERS IAW ASA TC 78472010.
- [SDR ASAA2023060543468](https://openairdocs.org/sdr/ASAA2023060543468), Jun 5, 2023: SPINNER. WORN. #2 ENGINE CONE PAINT WORN TO LIMITS. GROUNDED - YES. REPLACED #2 ENGINE CONE IAW ASA TC 78472010.
- [SDR ASAA2023060543465](https://openairdocs.org/sdr/ASAA2023060543465), Jun 5, 2023: POWER SUPPLY. INOPERATIVE. DURING EMERGENCY LIGHTS OPS TEST ASA TASK CARD 78233008 4 LIGHTS DID NOT ILLUMINATE COCKPIT DOME LIGHT, FWD ENTRY DOOR OVERHEAD LIGHT ESCAPE SLIDE, AND FLOOR L1
- [SDR ASAA2023051243216](https://openairdocs.org/sdr/ASAA2023051243216), May 12, 2023: UNKNOWN. UNKNOWN. SATCOM LOCKOUT PROCEDURE USED. GROUNDED - YES. SATCOM RESTORED SUCCESSFULLY.
- [SDR ASAA2023042442985](https://openairdocs.org/sdr/ASAA2023042442985), Apr 24, 2023: LUBRICATION UNIT. FAULTY. APU FAILED THREE START ATTEMPTS AT FL350 WITH FAULT LIGHT THAT REMAINED ILLUMINATED. GROUNDED - YES. ACCOMPLISHED B737-900 FIM 49-40 TASK 801 STEPS F AND H(1). 
- [SDR ASAA2023041942953](https://openairdocs.org/sdr/ASAA2023041942953), Apr 19, 2023: UNKNOWN. UNKNOWN. FMC STUCK IN BITE MODE. GROUNDED - YES. VERIFIED FAULT FMC CDU STUCK IN APU BITE. CYCLED C/B P6-4 F12. FMC CDU WENT TO NML. ACCOMP. APU FMC BITE NO APU FAULTS &
- [SDR ASAA2023040742761](https://openairdocs.org/sdr/ASAA2023040742761), Apr 7, 2023: UNKNOWN. UNKNOWN. HDG SEL LIGHT ON MCP WILL NOT ILLUMINATE. GROUNDED - YES. CLEANED CONTACTS, LIGHT OPS CKS NML.
- [SDR ASAA2023040442793](https://openairdocs.org/sdr/ASAA2023040442793), Apr 4, 2023: ACTUATOR. LEAKING. DURING ENGINE RUN, FOUND LEAK COMING FROM R VSV DRAIN ON #1 ENGINE. GROUNDED - YES. REMOVED AND REPLACED #1 ENGINE RIGHT HAND VSV ACTUATOR REF B737-900 AMM 75-3
- [SDR ASAA2023040442738](https://openairdocs.org/sdr/ASAA2023040442738), Apr 4, 2023: PRESSURE SWITCH. WARNING LIGHT. PER ASA T/C 78273000 LONG TIME FAULT ON ENGINE # 1 THE FUEL FILTER SIGNALS DISAGREE. MSG # 73-31071. GROUNDED - YES. REPLACED FUEL PRESSURE DIFFERENTIAL SWITCH 
- [SDR ASAA2023040342719](https://openairdocs.org/sdr/ASAA2023040342719), Apr 3, 2023: PRESSURE SWITCH. UNKNOWN. AFTER TAXIING CLEAR OF THE RUNWAY, THE FILTER BYPASS ON THE #1 ENGINE OF THE FUEL PANEL LIGHT CAME ON. WE SHUT DOWN THE ENGINE AND TAXIIED IN NORMALLY. GROUNDED
- [SDR ASAA2023032342496](https://openairdocs.org/sdr/ASAA2023032342496), Mar 23, 2023: UNKNOWN. UNKNOWN. FUEL QTY 2 CIRCUIT BREAKER POPPED. GROUNDED - YES. RESET C/B AND PERFORMED FQIS BITE TEST PROCEDURES PER B737-900 FIM 28-41 TASK 801. NO DEFECTS NOTED.
- [SDR ASAA2023030642231](https://openairdocs.org/sdr/ASAA2023030642231), Mar 6, 2023: UNKNOWN. UNKNOWN. SATCOM LOCK-UP. GROUNDED - YES. ACCOMPLISHED SATCOM RESET PROCEDURE PER QRH SUCCESSFUL.

All 244: https://openairdocs.org/aircraft/N474AS/reports.md

## Earlier aircraft with N474AS

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N474AS before.

- [Cancelled 2006-10-11](https://openairdocs.org/deregistered/N474AS-2006-10-11): Airbus Industrie A300 B4-203, S/N 219, built 1982. Exported to Belgium. Owner: [Dmcmag II LLC](https://openairdocs.org/faa-owner/DMCMAG%20II%20LLC), [Miami, FL](https://openairdocs.org/faa-place/FL/Miami)

## 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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