# N487AS: 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: 44108
- Year built: 2015
- Type: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: October 26, 2015
- Certificate issued: November 3, 2015
- Expires: November 30, 2028
- Mode S code: A602AB
- Registered owner: [Alaska Airlines Inc](https://openairdocs.org/faa-owner/ALASKA%20AIRLINES%20INC)
- Location: [Seatac, WA](https://openairdocs.org/faa-place/WA/Seatac)
- Owner type: Corporation
- Owner's area on the map: 47.4466° N, 122.2721° W: Placed by OpenAirDocs at the center of ZIP code 98188, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=487AS
- Page: https://openairdocs.org/aircraft/N487AS

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/N487AS/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 N487AS.

## FAA accident and incident reports

None matched to N487AS.

## Service difficulty reports (174, newest 50)

As reported by operators and repair stations.

- [SDR ASAA2026071667388](https://openairdocs.org/sdr/ASAA2026071667388), Jul 16, 2026: LAMP. INOPERATIVE. AFT EXIT ROW LEFT OVERWING LIGHT INOPERATIVE. GROUNDED - YES. REMOVED & REPLACED LEFT AFT EXIT ROW OVERWING LAMP IAW AMM 33-51-04. OPS CHECK GOOD.
- [SDR ASAA2025102061745](https://openairdocs.org/sdr/ASAA2025102061745), Oct 20, 2025: DOOR. NO DISCREPANCY. L1 DOOR JAMMED WHILE OPENING. EXCESSIVE FORCE WAS REQUIRED TO GET IT TO SWIVEL. GROUNDED - YES. VERIFIED WITH CSA AGENT L1 DOOR NOT LATCHED AND CLOSED WHEN ATTE
- [SDR ASAA2025051057828](https://openairdocs.org/sdr/ASAA2025051057828), May 10, 2025: POWER SUPPLY. INOPERATIVE. EMERGENCY LIGHTS ASSOCIATED WITH POWER SUPPLY M1670 ARE INOP. GROUNDED - YES. REMOVED AND REPLACED NEW POWER SUPPLY M1670 IAW B737 AMM 33-5106-960-806. TEST GOO
- [SDR ASAA2025050557811](https://openairdocs.org/sdr/ASAA2025050557811), May 5, 2025: POWER SUPPLY. INOPERATIVE. EMERGENCY LIGHT ASSOCIATED WITH POWER SUPPLY M1676 ARE INOP. GROUNDED - YES. REMOVED AND REPLACED POWER SUPPLY M1676 S/N 127239 AND OPS CHECK GOOD IAW B737 AMM 
- [SDR ASAA2025050557810](https://openairdocs.org/sdr/ASAA2025050557810), May 5, 2025: POWER SUPPLY. INOPERATIVE. EMERGENCY LIGHT ASSOCIATED WITH POWER SUPPLY M1695 ARE INOP. GROUNDED - YES. REMOVED AND REPLACED POWER SUPPLY M1695 S/N 127237 AND OPS CHECK GOOD IAW B737 AMM 
- [SDR ASAA2025042157669](https://openairdocs.org/sdr/ASAA2025042157669), Apr 21, 2025: WEB. CORRODED. AFT PIT ENTRY HAS CORROSION ON SILL THRESHOLD THROUGH OUT. GROUNDED - YES. REMOVED CORROSION ON AFT PIT THRESHOLD WEB, ORIGINAL MATERIAL THICKNESS .050, REMOVED
- [SDR ASAA2025041557815](https://openairdocs.org/sdr/ASAA2025041557815), Apr 15, 2025: POWER SUPPLY. INOPERATIVE. EMERGENCY LIGHTS ASSOCIATED WITH POWER SUPPLY M1675 ARE INOP. GROUNDED - YES. REMOVED AND REPLACED POWER SUPPLY M1675 S/N 127693 IAW B737-NG AMM 33-51-06. OPS C
- [SDR ASAA2025041557814](https://openairdocs.org/sdr/ASAA2025041557814), Apr 15, 2025: POWER SUPPLY. INOPERATIVE. EMERGENCY LIGHTS ASSOCIATED WITH POWER SUPPLY M2335 ARE INOP. GROUNDED - YES. REMOVED AND REPLACED POWER SUPPLY M2335 S/N 127214 AND OPS CHECK GOOD IAW B737 AMM
- [SDR ASAA2025041557813](https://openairdocs.org/sdr/ASAA2025041557813), Apr 15, 2025: POWER SUPPLY. INOPERATIVE. EMERGENCY LIGHTS ASSOCIATED WITH POWER SUPPLY M1670 ARE INOP. GROUNDED - YES. REMOVED AND REPLACED POWER SUPPLY M1670 S/N 123113 AND OPS CHECK GOOD IAW B737 AMM
- [SDR ASAA2025041557812](https://openairdocs.org/sdr/ASAA2025041557812), Apr 15, 2025: POWER SUPPLY. INOPERATIVE. EMERGENCY LIGHTS ASSOCIATED WITH POWER SUPPLY M2626 ARE INOP. GROUNDED - YES. REMOVED AND REPLACED POWER SUPPLY M2626 S/N 127569 AND OPS CHECK GOOD IAW B737 AMM
- [SDR ASAA2024080251539](https://openairdocs.org/sdr/ASAA2024080251539), Aug 2, 2024: LIGHT. DAMAGED. FA REPORTS PHOTO ILLUMINESCENT STRIP COMING OFF BY ROW 1. GROUNDED - YES. (RESOLVED ON W/O: 2011873 TASKCARD: N/R-00004 ) REMOVED AND REPLACED PHOTO ILLUMINESCE
- [SDR ASAA2024020247693](https://openairdocs.org/sdr/ASAA2024020247693), Feb 2, 2024: SNUBBER. MALFUNCTIONED. FA REPORTS L2 DOOR DIFFICULT 2 OPEN. GROUNDED - YES. EXAMINED DOOR AND FOUND DOOR TO BE BINDING HALFWAY THROUGH OPENING SEQUENCE. REMOVED AND REPLACED L2 DOOR S
- [SDR ASAA2023111146109](https://openairdocs.org/sdr/ASAA2023111146109), Nov 11, 2023: UNKNOWN. UNKNOWN. CONT CAB ZONE TEMP ILLUMINATED. EXTINGUISHES ON MASTER CAUTION RESET. GROUNDED - YES. INTERROGATED PACK ZONE TEMP CONTROLLER FOUND TRIM VALVE FAULT. FAULT CLEAR
- [SDR ASAA2023110846075](https://openairdocs.org/sdr/ASAA2023110846075), Nov 8, 2023: UNKNOWN. UNKNOWN. UPON ARRIVAL AT AIRCRAFT TR UNIT LIGHT ILLUMINATED AND ELEC LIGHT ILLUMINATED. GROUNDED - YES. FOUND TRU 1 BREAKER OPEN. RESET IAW AMM 20-61-01.TRU 1 OPS CKS GO
- [SDR ASAA2023102645900](https://openairdocs.org/sdr/ASAA2023102645900), Oct 26, 2023: IDG. FAULTY. #2 ENG GEN SOURCE OFF ILLUMINATES AFTER GENERATOR SELECTED ON. NO VOLTS/FREQ. GROUNDED - YES. (RESOLVED ON W/O: 1973923 TASKCARD: N/R-00001 ) REVERSED MEL MAINT
- [SDR ASAA2023102545830](https://openairdocs.org/sdr/ASAA2023102545830), Oct 25, 2023: UNKNOWN. UNKNOWN. FLT CREW REPORTS #1 HF FAIL. GROUNDED - YES. PERFORMED HF COMM SYSTEM BITE PER B737-900 FIM 23-11 TASK 801, OPS CHECK GOOD, #1 HF FAIL EXTINGUISHED.
- [SDR ASAA2023101545694](https://openairdocs.org/sdr/ASAA2023101545694), Oct 15, 2023: UNKNOWN. UNKNOWN. DURING EEC BITE TEST FOR #1 ENGINE FOUND FAULT MSG NBR 73-31371 (UPPER EGT SECTORS READING HIGH). REF T/C # 78273000. GROUNDED - YES. C/W B737-900 FIM 73-11 TAS
- [SDR ASAA2023101545621](https://openairdocs.org/sdr/ASAA2023101545621), Oct 15, 2023: FUEL HEATER. LEAKING. FUEL STREAMING OUT OF TOP CAP OF #1 ENGINE SERVO FUEL HEATER DURING MOTORING PROCEDURE. GROUNDED - YES. REEMOVED AND REPLACED#1 ENG FUEL HEATER SERVO REF B737-9
- [SDR ASAA2023101345620](https://openairdocs.org/sdr/ASAA2023101345620), Oct 13, 2023: UNKNOWN. UNKNOWN. #1 ENG FAULT CODE 73-31371 UPPER EGT SECTORS READING HIGH. ECO FAULT. GROUNDED - YES. (RESOLVED ON W/O: 1972371 TASKCARD: N/R-00003 ) TEMPURATURES INDICATED AS 
- [SDR ASAA2023101245637](https://openairdocs.org/sdr/ASAA2023101245637), Oct 12, 2023: UNKNOWN. UNKNOWN. A/T ARM LIGHT ON MCP INOP. GROUNDED - YES. ACCOMP. SERVO MOTOR TEST, TEST PASS NO FAULTS. ALSO REF. NOTE FOR MCP REF. M/M 22-11-34-860-004 & M/M 22-31-00-860-01
- [SDR ASAA2023101245579](https://openairdocs.org/sdr/ASAA2023101245579), Oct 12, 2023: UNKNOWN. UNKNOWN. CAT III AUTOLAND NOT SUCCESSFUL. AIRCRAFT DID NOT MAINTAIN CENTER LINE AND WAS APPROXIMATELY 50' LEFT OF THE CENTER LINE MARKINGS. NO WARNINGS OR LOCALIZER BEAM
- [SDR ASAA2023100945523](https://openairdocs.org/sdr/ASAA2023100945523), Oct 9, 2023: UNKNOWN. UNKNOWN. CONT CAB ZONE TEMP ILLUMINATED, COMPLIED WITH QRH PROCEDURES. GROUNDED - YES. PERFOMRED BITE OF PACK TEMP CONTROLLER IAW FIM 21-62 TASK 801. FOUND FAULT IN PREV
- [SDR ASAA2023090945037](https://openairdocs.org/sdr/ASAA2023090945037), Sep 9, 2023: UNKNOWN. UNKNOWN. FO FMC "EXEC" BUTTON IS WORN AND INTERMITTENT. GROUNDED - YES. ACCOMPLISHED RIGHT CDU KEY TEST AND OBSERVED CORRECT OPERATION AND INDICATIONS OF ALL KEYS.
- [SDR ASAA2023070443864](https://openairdocs.org/sdr/ASAA2023070443864), Jul 4, 2023: UNKNOWN. UNKNOWN. AUTOTHROTTLE- ARM LIGHT INOP-IN MCP. GROUNDED - YES. MCP A/T ARM LIGHT INTENSITY WORKS WITH CAPT'S MAIN PANEL LIGHTING RHEOSTAT, REF B737-900 WDM 33-11-31.
- [SDR ASAA2023070143832](https://openairdocs.org/sdr/ASAA2023070143832), Jul 1, 2023: UNKNOWN. UNKNOWN. ENGINE NO 1 FIRE HANDLE WILL NOT ILLUMINATE DURING FIRE TEST. GROUNDED - YES. ARRIVED TO A/C WITH ENG #1 SYS B STILL FAULTING. PERFORMED RESISTANCE CHECK OF BTH
- [SDR ASAA2023063043798](https://openairdocs.org/sdr/ASAA2023063043798), Jun 30, 2023: UNKNOWN. UNKNOWN. ENGINE 1 LOOP B FAULT. GROUNDED - YES. REMOVED ENG/APU FIRE DET. MODULE B737-900 AMM 26-10-01. ALT. PIN 2 AND PIN 25, PIN 2 AND 12 READ 856 OHMS DURING SHAKE DO
- [SDR ASAA2023062843814](https://openairdocs.org/sdr/ASAA2023062843814), Jun 28, 2023: UNKNOWN. UNKNOWN. SHORT TIME FAULT 75-30451 "THE VBV POSITION SIGNALS DISAGREE" FOUND ON #1 ENGINE. GROUNDED - YES. REMOVED FAN DUCT PANELS. AFTER INSPECTION FOUND 3 EA RING GUID
- [SDR ASAA2023061943645](https://openairdocs.org/sdr/ASAA2023061943645), Jun 19, 2023: CONTROL PANEL. UNKNOWN. HEAD WINDOW HARD TO READ IN MODE CONTROL PANEL. GROUNDED - YES. REMOVED AND REPLACED MODE CONTROL PANEL REF B737-900 AMM 22-11-34/401.
- [SDR ASAA2023051943417](https://openairdocs.org/sdr/ASAA2023051943417), May 19, 2023: FUEL NOZZLE. FAULTY. APU REPORTS SHOW A RAPID RISE IN CT5ATP TEMP AND HAS SURPASSED THE 605 DEGREE THRESHOLD. (#PRI1/ETOPS) CONTACT ETOPS MAINTENANCE CONTROL AND REPORT THAT THIS TA
- [SDR ASAA2023051443249](https://openairdocs.org/sdr/ASAA2023051443249), May 14, 2023: BATTERY. INOPERATIVE. EMERGENCY LIGHTS ASSOCIATED WITH POSER SUPPLY M1673 ARE INOP. GROUNDED - YES. REMOVED & REPLACED M1673 BATTERY & INSTALLATION TEST GOOD IAW B737-900 AMM 33-51-0
- [SDR ASAA2023051443248](https://openairdocs.org/sdr/ASAA2023051443248), May 14, 2023: BATTERY. INOPERATIVE. EMERGENCY LIGHTS ASSOCIATED WITH POWER SUPPLY M1672 ARE INOP. GROUNDED - YES. REMOVED & REPLACED M1672 BATTERY & INSTALLATION TEST GOOD IAW B737-900 AMM 33-51-0
- [SDR ASAA2023051443247](https://openairdocs.org/sdr/ASAA2023051443247), May 14, 2023: BATTERY. INOPERATIVE. EMERGENCY LIGHTS ASSOCIATED WITH POWER SUPPLY M2627 ARE INOP. GROUNDED - YES. REMOVED & REPLACED M2627 BATTERY & INSTALLATION TEST GOOD IAW B737-900 AMM 33-51-0
- [SDR ASAA2023032042438](https://openairdocs.org/sdr/ASAA2023032042438), Mar 20, 2023: LAMP. INOPERATIVE. L2 SLIDE LIGHT INOP. GROUNDED - YES. RELAMPED REF. B737-900 AMM 33-51-04. OPS NORMAL.
- [SDR ASAA2023030442188](https://openairdocs.org/sdr/ASAA2023030442188), Mar 4, 2023: FILTER. CLOGGED. REF T/C N8349002, FOUND OIL FILTER INDICATOR RED BUTTON EXTENDED ON APU. GROUNDED - YES. ACCOMPLISHED OIL FILTER INDICATOR SERVICING PER B737-900 AMM 49-91-13. 
- [SDR ASAA2023021041896](https://openairdocs.org/sdr/ASAA2023021041896), Feb 10, 2023: UNKNOWN. UNKNOWN. AUTOTHROTTLE DISENGAGED ATTEMPTED TO RE-ENGAGE AND AGAIN DISENGAGED. NOTED THE #2 THRUST LEVER ADVANCED AND #1 MAINTAINED COMMANED N1 SETTING. GROUNDED - YES. I
- [SDR ASAA2023020241772](https://openairdocs.org/sdr/ASAA2023020241772), Feb 2, 2023: DETECTOR. INOPERATIVE. APU DET INOP. GROUNDED - YES. TROUBLESHOT IAW B737-900 FIM 26-10 TASK 801. BITE PROCEDURE INDICATED APU TAILPIPE DETECTOR FAULT. REMOVED AND REPLACED APU TAILPI
- [SDR ASAA2023012391592](https://openairdocs.org/sdr/ASAA2023012391592), Jan 19, 2023: FMC. FAULTED. APPROX 5 HRS INTO FLIGHT BOTH FMCS WENT BLANK AND FMC P/RST LIGHT ILLUMINATED. NO VTK OF MAP FLAGS WERE NOTICED ON EITHER NAV DISPLAYS. APPROX 1 MIN LATER. BOTH
- [SDR ASAA2023010541434](https://openairdocs.org/sdr/ASAA2023010541434), Jan 5, 2023: CIRCUIT BREAKER. OPEN. CREW REPORTS ALL LAVS NOT FLUSHING. GROUNDED - YES. AIRTURNBACK -- FOUND CIRCUIT BREAKER C11 P91 PANEL OPEN. (VACUUM WASTE CONT). RESET CIRCUIT BREAKER IAW B737
- [SDR ASAA2022122761237](https://openairdocs.org/sdr/ASAA2022122761237), Dec 26, 2022: PRESSURE SWITCH. INTERMITTENT. #2 AFT FUEL LOW PRESSURE LIGHT DID NOT ILLUMINATE WHEN SWITCH TURNED OFF. GROUNDED - YES. PERFORMED FUEL QUANTITY BITE TEST IAW B737-900 AMM 28-41-00. NO FAULTS
- [SDR ASAA2022121341131](https://openairdocs.org/sdr/ASAA2022121341131), Dec 13, 2022: BLADE. DAMAGED. DURING #2 ENGINE FAN LUBE ASA T.C 78471010 FOUND #15 FAN BLADE COATING LOSS ON CONCAVE SIDE PRESSURE FACE (AREA X) OUT OF LIMITS. REF B737-900 AMM 72-21-02. GRO
- [SDR ASAA2022100440457](https://openairdocs.org/sdr/ASAA2022100440457), Oct 4, 2022: POSITION SENSOR. FALSE INDICATION. LAND VERIFY FAILED. MSG 22-11145 CHANNEL A&B AILERON POSITION SENSOR. GROUNDED - YES. ACCOMPLISHED AILERON POSITION SENSOR TEST REF B737-900 AMM 22-11-29 TEST P
- [SDR ASAA2022092540091](https://openairdocs.org/sdr/ASAA2022092540091), Sep 25, 2022: SELECTOR. INOPERATIVE. V/S SELECTOR APPEARS INOPERATIVE. RECYCLED FLIGHT DIRECTOR SWITCHES WITH NO AFFECT. GROUNDED - YES. . REMOVED AND REPLACED MCP REF B737-900 AMM 22-11-34 MCP INS
- [SDR ASAA2022082039591](https://openairdocs.org/sdr/ASAA2022082039591), Aug 20, 2022: NONE. NONE. AP/AT ANN TEST SWITCH 1 & 2 - NUT MISSING ON TEST SWITCH. GROUNDED - YES. REMOVED & REPLACED ANNUNCIATOR FLIGHT STATUS PANEL PER B737-900 AMM 22-11-32.
- [SDR ASAA2022072439163](https://openairdocs.org/sdr/ASAA2022072439163), Jul 24, 2022: PANEL. FAULTY. MODE CONTROL PANEL STUCK. GROUNDED - YES. REMOVED AND REPLACED MODE CONTROL PANEL PER B737-900 AMM 22-11-34. OPS CHECK GOOD.
- [SDR ASAA2022072339162](https://openairdocs.org/sdr/ASAA2022072339162), Jul 23, 2022: INDICATOR. STUCK. AIRSPEED WINDOW STUCK AT 100 AND ALTITUDE PRESELECT WINDOW WILL NOT REMAIN AT SELECTED ALTITUDE KEEPS JUMPING TO 50000. GROUNDED - YES. ACCOMPLISHED DIGITAL FLI
- [SDR ASAA2022071439149](https://openairdocs.org/sdr/ASAA2022071439149), Jul 14, 2022: CONTROL VALVE. FAULTED. AFTER ENGINE START + MC RECALL, R PACK LIGHT WOULD NOT EXTINGUISH. GROUNDED - YES. REMOVED AND REPLACED TEMP CONTROL VALVE REF. B737-900 AMM 21-51-10.
- [SDR ASAA2022071439141](https://openairdocs.org/sdr/ASAA2022071439141), Jul 14, 2022: CONTROL VALVE. FAULTED. AFTER ENGINE START + MC RECALL, R PACK LIGHT WOULD NOT EXTINGUISH. RIGHT PACK ILLUMINATED ON RECALL AT TOP OF DESCENT, LIGHT EXTINGUISHED WITH MASTER CAUTION RE
- [SDR ASAA2022070438975](https://openairdocs.org/sdr/ASAA2022070438975), Jul 4, 2022: ACTUATOR. FAULTY. RIGHT "RAM DOOR FULL OPEN' LIGHT ILLUMINATED INTERMITENTLY THROUGHOUT CLIMB AND CRUSE. GROUNDED - YES. REMOVED AND REPLACED RIGHT RAM AIR EXHAUST ACTUATOR REF B
- [SDR ASAA2022070338953](https://openairdocs.org/sdr/ASAA2022070338953), Jul 3, 2022: ACTUATOR. FAULTY. RIGHT PACK LIGHT ON RECALL. GROUNDED - YES. (RESOLVED ON W/O: 1916055 TASKCARD: N/R-00005 ) REMOVED AND REPLACED RAM AIR EXHAUST ACTUATOR REF AMM 21-51-27. OPS 
- [SDR ASAA2022070139089](https://openairdocs.org/sdr/ASAA2022070139089), Jul 1, 2022: SHUTOFF VALVE. LEAKING. RED BOX ON ENG #1 EGT DISPLAY. GROUNDED - YES. FOLLOWED B737-900 FIM 71-06 T ASK 805 STEP (F)(2). ACCOMPLISHED EEC BITE ON #1 ENGINE REF FIM 73-00 TASK 801. NO 

All 174: https://openairdocs.org/aircraft/N487AS/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

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.