# N409AS: 2013 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: 41733
- Year built: 2013
- Type: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: February 4, 2013
- Certificate issued: February 14, 2013
- Expires: February 28, 2029
- Mode S code: A4CE21
- 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=409AS
- Page: https://openairdocs.org/aircraft/N409AS

From the FAA registry file of October 20, 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/N409AS/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 N409AS.

## FAA accident and incident reports

None matched to N409AS.

## Service difficulty reports (276, newest 50)

As reported by operators and repair stations.

- [SDR ASAA2026061566845](https://openairdocs.org/sdr/ASAA2026061566845), Jun 15, 2026: BATTERY PACK. FAULTED. EMERGENCY LIGHTS OUT AT, ROWS LEFT ROW 27 AND RIGHT ROWS 9,13, 25 AND 29. GROUNDED - YES. REMOVED AND REPLACED BATTERIES FOR EMERGENCY LIGHTS ON ROWS 9,13,25,27
- [SDR ASAA2026052766546](https://openairdocs.org/sdr/ASAA2026052766546), May 27, 2026: BAFFLE. CRACKED. RIGHT BAFFLE CLIP BS 500A IS CRACKED AFT SIDE OF FRAME. GROUNDED - YES. REMOVED AND RELACED RT BAFFLE CLIP BS 500A, AFT SIDE OF FRAME IAW SRM 51-40-02-0G-0.
- [SDR ASAA2026052366544](https://openairdocs.org/sdr/ASAA2026052366544), May 23, 2026: TRANSITION PANEL. CRACKED. FWD CARGO RT TRANSITION PANEL BS 500B TO 500H HAS MULTIPLE CRACKED AREAS. GROUNDED - YES. REMOVED AND REPLACED RT TRANSITION PANEL AND SPLICE BS 500B TO 500H IA
- [SDR ASAA2025020655828](https://openairdocs.org/sdr/ASAA2025020655828), Feb 6, 2025: SIGN. MISSING. ENROUTE- F/A REPORTS EXIT SIGN NEAR GARBAGE BIN AT L2 DOOR IS MISSING. GROUNDED - YES. FOUND LENS COVER FOR MISSING EXIT SIGN AT L2 DOOR, INSTALLED LENS COVER R
- [SDR ASAA2024072551936](https://openairdocs.org/sdr/ASAA2024072551936), Jul 25, 2024: BATTERY. INOPERATIVE. ACCOMPLISH REPAIRS FOR THE DISCREPANCIES LISTED ON THE ATTACHED AAR MIG-85A (S) FOR ASA WALK ITEMS. (REF MULTI STEP 8 - CABIN EMERGENCY CEILING LIGHTS INOP AT T
- [SDR ASAA2024062650624](https://openairdocs.org/sdr/ASAA2024062650624), Jun 26, 2024: INTERCOSTAL. CORRODED. AFTER REMOVAL OF RH AFT CARGO TRANSITION PANEL FOR INTERCOSTAL CORRODED AT STA 747 TO 767, MARKED. GROUNDED - YES. REMOVED AND REPLACED INTERCOSTAL IAW B737-900
- [SDR ASAA2024061951131](https://openairdocs.org/sdr/ASAA2024061951131), Jun 19, 2024: FLOORBEAM. CORRODED. AFT WET AREA STA 1016 FLOOR BEAM HAS CORROSION AT RBL 50. GROUNDED - YES. REPAIRS MADE TO FLOOR BEAM 1016 AT RBL 50 IAW ASA900ER-53EA-27183 REV 00W-1" O-.150 R-
- [SDR ASAA2024061951122](https://openairdocs.org/sdr/ASAA2024061951122), Jun 19, 2024: FLOORBEAM. CORRODED. AFT WET AREA STA 986 FLOOR BEAM HAS CORROSION RBL 30 TO RBL 50. GROUNDED - YES. REPAIRED STA 986 FLOOR BEAM IAW 900ER-53EA-27211 REV 00 W 1 O .150 R .099 L 1 D 
- [SDR ASAA2024061950835](https://openairdocs.org/sdr/ASAA2024061950835), Jun 19, 2024: FLOOR SUPPORT. CORRODED. AFT WET AREA FLOOR SUPPORT RBL 50 STA 947 TO 967 HAS CORROSION. GROUNDED - YES. REMOVED AND REPLACED FLOOR SUPPORT AT RBL 50 FROM STA 947 TO 967 IAW BOEING 737-
- [SDR ASAA2024061950629](https://openairdocs.org/sdr/ASAA2024061950629), Jun 19, 2024: FLOOR SUPPORT. CORRODED. AFT WET AREA FLOOR SUPPORT RBL 20 STA 967 TO 986 HAS CORROSION. GROUNDED - YES. REMOVED AND REPLACED FOOR SUPPORT IAW B737-900ER SRM 51-40-02-0G-0W-1.5" O-.075"
- [SDR ASAA2024061950628](https://openairdocs.org/sdr/ASAA2024061950628), Jun 19, 2024: FLOOR SUPPORT. CORRODED. AFT WET AREA FLOOR SUPPORT RBL 20 STA 947 TO 967 HAS CORROSION. GROUNDED - YES. REMOVED AND REPLACED INTERCOSTAL IAW B737-900ER SRM 51-40-02-0G-0W=3" O=.075 R=.
- [SDR ASAA2024061950627](https://openairdocs.org/sdr/ASAA2024061950627), Jun 19, 2024: TRANSITION PANEL. CORRODED. L/H TRANSITION PANEL STA 500H TO 500L IS CORRODED. GROUNDED - YES. L/H TRANSITION PNL STA 500H TO 500L REPAIRED IAW B737-900ER SRM 53-00-53-2R-6W=2" O=.040" R=.
- [SDR ASAA2024061950626](https://openairdocs.org/sdr/ASAA2024061950626), Jun 19, 2024: TRANSITION PANEL. CORRODED. R/H TRANSITION PANEL STA 500H TO 500L IS CORRODED. GROUNDED - YES. R/H TRANSITION PNL STA 500H TO 500L REPAIRED IAW B737-900ER SRM 53-00-53-2R-6W .8 O .040 R .0
- [SDR ASAA2024061950623](https://openairdocs.org/sdr/ASAA2024061950623), Jun 19, 2024: FLOOR SUPPORT. CRACKED. FWD WET AREA INTERCOSTAL CRACKED AT RBL 30 STA 312 TO 328. GROUNDED - YES. REMOVED AND REPLAED INTERCOSTAL IAW B737-900 ER SRM 51-40-05-0G-0 AND SRM 51-40-02-0G
- [SDR ASAA2024061850836](https://openairdocs.org/sdr/ASAA2024061850836), Jun 18, 2024: CARGO TRACK. CRACKED. AFT CARGO R/H TRACK IS CRACKED AT STA 727H, 727I, 727J AND 727K. GROUNDED - YES. REMOVED AND REPLACED CARGO TRACK IAW B737-900ER SRM 51-40-02-0G-0, REPAIRED CAR
- [SDR ASAA2024061850758](https://openairdocs.org/sdr/ASAA2024061850758), Jun 18, 2024: SIDEWALL SUPPORT. CORRODED. AFT CARGO SIDEWALL SUPPORT AT STA 727I RBL 26 IS CORRODED. GROUNDED - YES. REMOVED DAMAGE SIDEWALL SUPPORT FOUND TO BE OUT LIMITS IAW B737-900ER SRM 53-00-07-1A
- [SDR ASAA2024061850756](https://openairdocs.org/sdr/ASAA2024061850756), Jun 18, 2024: CARGO TRACK. CRACKED. AFT CARGO L/H TRACK IS CRACKED AT STA 727I. GROUNDED - YES. REPAIRED CARGO TRACK IAW B737-900ER SRM 53-00-53-2R-3.
- [SDR ASAA2024061850755](https://openairdocs.org/sdr/ASAA2024061850755), Jun 18, 2024: STRAP. CORRODED. AFT CARGO STRAP RBL 24 STA 807 TO 827 HAS CORROSION. GROUNDED - YES. REMOVED DAMAGE AFT CARGO STRAP FOUND TO BE OUT LIMITS IAW B737-900ER SRM 53-60-15-1A-1, REM
- [SDR ASAA2024061850688](https://openairdocs.org/sdr/ASAA2024061850688), Jun 18, 2024: TRANSITION PANEL. CORRODED. AFT CARGO R/H TRANSITION AFT OF DOOR HAS AREAS OF CORROSION GROUNDED - YES. REMOVED DAMAGE TRANSITION PANEL FOUND TO BE OUT LIMITS IAW SRM 53-00-53-1A-2, REMOVE
- [SDR ASAA2024061850631](https://openairdocs.org/sdr/ASAA2024061850631), Jun 18, 2024: SHIELD. CORRODED. AFT CARGO FWD SHIELD HAS AREAS OF CORROSION. GROUNDED - YES. REMOVED DAMAGE, 100% MATERIAL LOSS, FOUND TO BE OUT OF LIMITS IAW B737-900ER SRM 53-60-15-1A-1, REM
- [SDR ASAA2024061850630](https://openairdocs.org/sdr/ASAA2024061850630), Jun 18, 2024: TRANSITION PANEL. CORRODED. AFT CARGO R/H TRANSITION HAS AREAS OF CORROSION STA 737A TO STA 767. GROUNDED - YES. REMOVED DAMAGE FOUND TO BE OUT OF LIMITS IAW B737-900ER SRM 53-00-53-1A-2, 
- [SDR ASAA2024061850622](https://openairdocs.org/sdr/ASAA2024061850622), Jun 18, 2024: CARGO TRACK. CORRODED. AFT CARGO R/H TRACK HAS CORROSION AT STA 773. GROUNDED - YES. REMOVED DAMACE, FOUND TO BE OUT OF LIMITS IAW B737-900ER SRM 53-00-53-1A-2 FOR REPAIR ACCOMPLISHED
- [SDR ASAA2024061850621](https://openairdocs.org/sdr/ASAA2024061850621), Jun 18, 2024: ANGLE. CORRODED. AFT CARGO L/H TRANSITION HAS AREAS OF CORROSION STA 727A TO 847. GROUNDED - YES. REMOVED CORROSION FOUND OUT LIMITS IAW B737-900ER SRM 53-00-53-1A-2 & FABRICATE
- [SDR ASAA2024061750754](https://openairdocs.org/sdr/ASAA2024061750754), Jun 17, 2024: WEB. CORRODED. FWD CARGO DOOR CUT-OUT LOWER WEB CELL UPPER SKIN HAS CORROSION IN MULTIPLE SPOTS (MARKED). GROUNDED - YES. REMOVED DAMAGE FOUND TO BE OUT OF LIMITS. REMOVED, LO
- [SDR ASAA2024061750625](https://openairdocs.org/sdr/ASAA2024061750625), Jun 17, 2024: WEB. CORRODED. AFT CARGO DOOR CUT-OUT LOWER WEB CORRODED (MARKED). GROUNDED - YES. REMOVED DAMAGE, MATERIAL FOUN TO BE OUT OF LIMITS, REMOVED AND REPLACED LOWER WEB FROM AFT C
- [SDR ASAA2024061451273](https://openairdocs.org/sdr/ASAA2024061451273), Jun 14, 2024: BATTERY PACK. NO TEST. RIGHT OVERWING EXIT EMERGENCY LIGHT, EXIT ID AT LT AND RT AFT OVER HATCH FAILED BATTERY CHECK. GROUNDED - YES. REMOVED AND REPLACED AND OPS CHECK GOOD FOR EMERG
- [SDR ASAA2024041549064](https://openairdocs.org/sdr/ASAA2024041549064), Apr 15, 2024: POWER SUPPLY. INOPERATIVE. WHILE PERFORMING T/C 78233008, FOUND 3 SECTIONS OF THE LH SIDE EMERGENCY EXIT LIGHTS INOP. GROUNDED - YES. REMOVED AND REPLACED BATTERY PACK IN AFT GALLEY CEILI
- [SDR ASAA2023111246163](https://openairdocs.org/sdr/ASAA2023111246163), Nov 12, 2023: CONTROL VALVE. FAULTY. NITROGEN GENERATION SYSTEM IS IN DEGRADED CONDITION. GROUNDED - YES. R/R LEFT FLOW CONTROL AND SHUTOFF VALVE IAW AMM TASK 21-51-01. OPS CHECK GOOD. NGS LIGHT SH
- [SDR ASAA2023102245753](https://openairdocs.org/sdr/ASAA2023102245753), Oct 22, 2023: UNKNOWN. UNKNOWN. ZONE TEMP CONT CAB ILLUMINATED. EXT ON RESET. GROUNDED - YES. PERFORMED B737-900 FIM 21-62 TASK 801. OPS CK GOOD.
- [SDR ASAA2023101245641](https://openairdocs.org/sdr/ASAA2023101245641), Oct 12, 2023: UNKNOWN. UNKNOWN. #1 DRIVE LIGHT NOT ILLUMINATED WITH ENGINE SHUT DOWN. LIGHT ILLUMINATES DURING LIGHT TEST. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023100545499](https://openairdocs.org/sdr/ASAA2023100545499), Oct 5, 2023: UNKNOWN. UNKNOWN. ENGINE #1 DRIVE LIGHT NOT ILLUMINATED ON GROUND. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023092745357](https://openairdocs.org/sdr/ASAA2023092745357), Sep 27, 2023: UNKNOWN. UNKNOWN. # 1 "DRIVE" LIGHT NOT ILLUMINATED ON GROUND. BULBS TEST GOOD. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023092345290](https://openairdocs.org/sdr/ASAA2023092345290), Sep 23, 2023: ACM. FAULTY. FMC L&R DISCRETES SHOW RIGHT PACK ON EVEN WHEN SWITCHED OFF. GROUNDED - YES. REMOVED R/H PACK FLOW CONTROL VALVE, REMOVED R/H ACM REF AMM 21-51-04. REPLACED R/H
- [SDR ASAA2023092245332](https://openairdocs.org/sdr/ASAA2023092245332), Sep 22, 2023: ENGINE. MALFUNCTIONED. #2 EGT 83 DEG HIGHER THAN #1 ENGINE. #2 SLOW TO ACCELERATE TO 40. GROUNDED - YES. #2 ENGINE REPLACED ON A/C W/O 1970733 REF TC'S 78471000 + 78471001.
- [SDR ASAA2023091945207](https://openairdocs.org/sdr/ASAA2023091945207), Sep 19, 2023: UNKNOWN. UNKNOWN. DURING ENG 2 BITE TEST FOUND MX MESSAGE # 77-20872"THE TOP LEFT EGT SIGNAL IS OUT OF RANGE." ECONOMIC FAULT. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023091745304](https://openairdocs.org/sdr/ASAA2023091745304), Sep 17, 2023: UNKNOWN. UNKNOWN. REF TSR714980, DURING COMPLETION OF WIRE HARNESS INSPECTION, FOUND BLACK SHEATHING WORN APPROX 4 IN FWD OF DP901 ON THE #2 ENG. NO DAMAGE NOTED TO METAL BRAID. 
- [SDR ASAA2023091745220](https://openairdocs.org/sdr/ASAA2023091745220), Sep 17, 2023: UNKNOWN. UNKNOWN. REF LP 60608120. AFTER PERFORMING IDLE RUN TEST FOR STARTER INSTALLATION AND CLOSING FAN COWLS FOUND STEADY FUEL DRIPPING FROM DRAIN AT BOTTOM OF COWLING #2 ENG
- [SDR ASAA2023091745169](https://openairdocs.org/sdr/ASAA2023091745169), Sep 17, 2023: STARTER. FAILED. #2 ENGINE NO ROTATION. GROUNDED - YES. INITIATED MIG-2C S/N: 40-0054352. K. TABAKCI ASA 47439 09/15/2023 REMOVED AND INSTALLED #2 ENGINE STARTER REF AMM 80-11-0
- [SDR ASAA2023091645179](https://openairdocs.org/sdr/ASAA2023091645179), Sep 16, 2023: PROBE. FAULTED. RED BOX ON #2 ENGINE EGT GAUGE UPON SHUTDOWN. NO OTHER ABNORMAL INDICATIONS THROUGHOUT FLIGHT. (REF TSR714980) GROUNDED - YES. (RESOLVED ON W/O: 1969938 TASKCAR
- [SDR ASAA2023091645184](https://openairdocs.org/sdr/ASAA2023091645184), Sep 16, 2023: UNKNOWN. UNKNOWN. ON GROUND. #2 ENGINE SIGNIFICANTLY SLOWER FOR N1 TO SPOOL UP AS WELL AS MUCH HIGHER EGT AND FUEL FLOW. ON THE T/O ROLL IN DFW EGT #2 WAS AROUND 920 AT PEAK TEMP
- [SDR ASAA2023091145079](https://openairdocs.org/sdr/ASAA2023091145079), Sep 11, 2023: REGULATOR. MALFUNCTIONED. AFTER LANDING AND ENGINES AT IDLE. RH DUCT PRESSURE WAS AT 6 PSI, LH DUCT PRESSURE WAS AT 18PSI. AFTER SWITCHING TO APU BLEED AIR BOTH PRESSURES ROSE TO 05 PSI.
- [SDR ASAA2023082644800](https://openairdocs.org/sdr/ASAA2023082644800), Aug 26, 2023: UNKNOWN. UNKNOWN. PERFORMED ENGINE #2 BITE TEST FOUND FAULT CODE 77-20872 "TOP LEFT EFT SIGNAL (T495S4) IS OUT OF RANGE." ON FLIGHT LEG 0 AND 1. ECONOMIC FAULT. GROUNDED - YES. O
- [SDR ASAA2023081744653](https://openairdocs.org/sdr/ASAA2023081744653), Aug 17, 2023: UNKNOWN. UNKNOWN. FVR #1 HF RADIO CHECKS GOOD. GOOD RECEPTION BUT UNABLE TO TRANSMIT ON HF 2. GROUNDED - YES. ON DEFERRAL
- [SDR ASAA2023081544616](https://openairdocs.org/sdr/ASAA2023081544616), Aug 15, 2023: MODULE. CLOGGED. DURING APU GVI REFER T/C 78349007 STEP D FOUND OIL FILTER INDICATOR EXTENDED. GROUNDED - YES. REMOVED AND REPLACED LUBE FILTER ELEMENT ON APU REFER AMM 49-91-13
- [SDR ASAA2023080744459](https://openairdocs.org/sdr/ASAA2023080744459), Aug 7, 2023: UNKNOWN. UNKNOWN. FMC DISAGREE - GROUNDED - YES. PERFORMED QRH LIGHT WENT OUT.
- [SDR ASAA2023080344396](https://openairdocs.org/sdr/ASAA2023080344396), Aug 3, 2023: UNKNOWN. UNKNOWN. TESTED TRANSMISSION OF BOTH HF1 AND HF2 AS DIRECTED BY SEAMC. BOTH RADIOS FAILED TO MAKE CONTACT WITH SFO RADIO. 5 DIFFERENT FREQS WERE ATTEMPTED. FREQS WERE AS
- [SDR ASAA2023072944294](https://openairdocs.org/sdr/ASAA2023072944294), Jul 29, 2023: UNKNOWN. UNKNOWN. HF #2 DOES NOT TRANSMIT. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023070243835](https://openairdocs.org/sdr/ASAA2023070243835), Jul 2, 2023: UNKNOWN. UNKNOWN. LEFT FWD WINDOW OVER HEAT LIGHT IS ON. GROUNDED - YES. PERFORMED B737-900 FIM 30-41 TASK 801, FOUND C/B "WINDOW HEAT POWER LEFT FRONT" (B9) ON P6-11 PANEL OPEN.
- [SDR ASAA2023060643538](https://openairdocs.org/sdr/ASAA2023060643538), Jun 6, 2023: ACTUATOR. LEAKING. WHILE PERFORMING MAINTENANCE ENGINE RUN ON #2 ENGINE, OBSERVED FUEL LEAKING FROM RIGHT VSV DRAIN (9 DROPS PER MINUTE). GROUNDED - YES. REMOVED/REPLACED #2 ENG R
- [SDR ASAA2023060643537](https://openairdocs.org/sdr/ASAA2023060643537), Jun 6, 2023: VALVE. LEAKING. WHILE PERFORMING MAINTENANCE ENGINE RUN ON #2 ENGINE, OBSERVED FUEL LEAKING FROM HPTACC DRAIN LINE (6 DROPS PER MINUTE). GROUNDED - YES. REMOVED HPTACC VALVE IA

All 276: https://openairdocs.org/aircraft/N409AS/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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