# N921NN: 2013 Boeing 737-823

- Status: Valid registration
- Airframe: [Boeing 737-823](https://openairdocs.org/model/boeing-737-823) (registry code 13844CB, 162 seats)
- Engine: [CFM International CFM56-7B24E series](https://openairdocs.org/engine/cfm-international-cfm56-7b24e-series) (registry code 13804)
- Data sheets: [TCDS A16WE](https://openairdocs.org/tcds/A16WE) (The Boeing Company) (OpenAirDocs)
- Serial number: 33229
- Year built: 2013
- Type: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: March 27, 2013
- Certificate issued: October 21, 2025
- Expires: October 31, 2032
- Mode S code: ACC31A
- Registered owner: [Bank Of Utah Trustee](https://openairdocs.org/faa-owner/BANK%20OF%20UTAH%20TRUSTEE)
- Location: [Salt Lake City, UT](https://openairdocs.org/faa-place/UT/Salt%20Lake%20City)
- Owner type: Corporation
- Owner's area on the map: 40.7558° N, 111.8843° W: Placed by OpenAirDocs at the center of ZIP code 84111, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=921NN
- Page: https://openairdocs.org/aircraft/N921NN

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. The registry lists only the engine series, so ADs for every CFM International CFM56-7B24E model are included.

## ADs that may apply (OpenAirDocs): 332 in force

### Matched by airframe (Boeing 737-823)

- [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 2025-05-16](https://openairdocs.org/ad/2025-05-16): Fuselage · Boeing 737-800 Series. Effective Apr 22, 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 2024-18-08](https://openairdocs.org/ad/2024-18-08): Equipment/furnishings · Boeing 737-300 Series, 737-400 Series and 737-800 Series. Effective Nov 15, 2024
- [AD 2024-18-07](https://openairdocs.org/ad/2024-18-07): Equipment/Furnishing · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 2 more. Effective Nov 12, 2024
- [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 2024-01-06](https://openairdocs.org/ad/2024-01-06): Fuselage · Boeing 737-600 Series, 737-700 Series and 737-800 Series. Effective Mar 7, 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 2022-18-13](https://openairdocs.org/ad/2022-18-13): Fuselage · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 2 more. Effective Oct 31, 2022
- [AD 2022-13-18](https://openairdocs.org/ad/2022-13-18): Oxygen · Boeing 737-700 Series, 737-800 Series, 747-8 Series and 3 more. Effective Sep 15, 2022
- [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 2022-08-05](https://openairdocs.org/ad/2022-08-05): Fuselage · Boeing 737-800 Series. Effective May 27, 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 2021-21-09](https://openairdocs.org/ad/2021-21-09): Fuselage · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 2 more. Effective Dec 13, 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 2021-02-14](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 2021-02-13](https://openairdocs.org/ad/2021-02-13): Fuselage · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 2 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 2019-22-06](https://openairdocs.org/ad/2019-22-06): Fuel · Boeing 737-800 Series with STC ST00830SE. Effective Dec 30, 2019

### Matched by engine (CFM International CFM56-7B24E 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 2013-24-13](https://openairdocs.org/ad/2013-24-13) (historical): Fuselage · Boeing 737-100 Series, 737-200 Series, 737-200C Series and 8 more. Effective Jan 7, 2014
- [AD 2013-19-04](https://openairdocs.org/ad/2013-19-04) (historical): Fuselage · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 2 more. Effective Nov 4, 2013
- [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 2012-21-08](https://openairdocs.org/ad/2012-21-08) (historical): Auto Flight · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 2 more. Effective Nov 27, 2012
- [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 2010-17-05](https://openairdocs.org/ad/2010-17-05) (historical): Fuel system · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 2 more. Effective Sep 22, 2010
- [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 2009-24-07](https://openairdocs.org/ad/2009-24-07) (historical): Landing gear · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 1 more. Effective Jan 4, 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 2009-01-02](https://openairdocs.org/ad/2009-01-02) (historical): Air conditioning (A/C) outlet · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 2 more. Effective Feb 27, 2009
- [AD 2008-12-04](https://openairdocs.org/ad/2008-12-04) (historical): Fuselage skin · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 2 more. Effective Jul 16, 2008
- [AD 2008-10-10](https://openairdocs.org/ad/2008-10-10) (historical): New limitations for fuel tank systems · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 2 more. Effective Jun 12, 2008
- [AD 2008-08-24](https://openairdocs.org/ad/2008-08-24) (historical): Drain tube assemblies · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 2 more. Effective May 27, 2008
- [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 2007-06-52](https://openairdocs.org/ad/2007-06-52) (historical): Spoilers · Boeing 737-800 Series. Effective May 7, 2007
- [AD 2007-06-51](https://openairdocs.org/ad/2007-06-51) (historical): Flight spoiler actuator jams · Boeing 737-800 Series
- [AD 2006-10-17](https://openairdocs.org/ad/2006-10-17) (historical): Compass bracket assembly · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 2 more. Effective Jun 22, 2006
- [AD 2005-24-03](https://openairdocs.org/ad/2005-24-03) (historical): Nacelle support fittings and the lower wing skin panels · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 1 more. Effective Dec 28, 2005
- [AD 2005-25-03](https://openairdocs.org/ad/2005-25-03) (historical): Point "D" splice fitting · Boeing 737-700 Series, 737-700C Series and 737-800 Series. Effective Dec 21, 2005
- [AD 2005-12-05](https://openairdocs.org/ad/2005-12-05) (historical): Flight deck door · Reinforced cockpit door (Safran Cabin STC ST01335LA or 2 others). Effective Jul 19, 2005
- [AD 2005-07-20](https://openairdocs.org/ad/2005-07-20) (historical): Flight control computers · Boeing 737-600 Series, 737-700 Series, 737-800 Series and 1 more. Effective May 12, 2005
- [AD 2005-05-18](https://openairdocs.org/ad/2005-05-18) (historical): Webs of the aft pressure bulkhead · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 2 more. Effective Apr 18, 2005
- [AD 2003-14-04](https://openairdocs.org/ad/2003-14-04) (historical): Flight Deck Door Pressure Relief Latch Assemblies · Boeing 737-200 Series, 737-300 Series, 737-400 Series and 14 more. Effective Jul 25, 2003
- [AD 2003-03-01](https://openairdocs.org/ad/2003-03-01) (historical): Aft Engine Mount · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 2 more. Effective Feb 13, 2003
- [AD 2002-18-52](https://openairdocs.org/ad/2002-18-52) (historical): Fuel Pumps · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 4 more
- [AD 2002-16-03](https://openairdocs.org/ad/2002-16-03) (historical): Main landing gear (MLG) · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 2 more. Effective Aug 27, 2002
- [AD 2001-06-08](https://openairdocs.org/ad/2001-06-08) (historical): Elevator Hinge Plates · Boeing 737-600 Series, 737-700 Series and 737-800 Series. Effective Apr 9, 2001

All 393: https://openairdocs.org/aircraft/N921NN/ads.md

## Information bulletins (advisory) (19 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 2025-08](https://openairdocs.org/saib/2025-08): INDICATING/RECORDING SYSTEM, Erroneous Illumination of Cabin Altitude Warning Lights in High Altitude Landing Mode. Issued Sep 8, 2025
- [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-09-03](https://openairdocs.org/saib/NM-09-03): Engine Fuel and Control - Implementing Fuel Tank System Airworthiness Limitations. Issued Dec 11, 2008
- [SAIB NM-08-43](https://openairdocs.org/saib/NM-08-43): Cabin Equipment/Furnishings - Seats. Issued Sep 3, 2008
- [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-06-57](https://openairdocs.org/saib/NM-06-57): Reports of damage to airplanes and to property on the ground caused by blue or clear ice falling from airplanes.. Issued Jul 27, 2006
- [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 N921NN.

## FAA accident and incident reports

None matched to N921NN.

## Service difficulty reports (74, newest 50)

As reported by operators and repair stations. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

- [SDR AALA202610139358](https://openairdocs.org/sdr/AALA202610139358), Oct 12, 2026: LIGHT. INOPERATIVE. AIRCRAFT WAS NOT GROUNDED: L H AFT OVERWING EMERGENCY EXIT DOORWAY LIGHT FLICKERING. R/R OVERWING EXIT LIGHT ASSEMBLY IAW AMM 33-21-00. OPS CK NORMAL.
- [SDR AALA202608061556](https://openairdocs.org/sdr/AALA202608061556), Aug 3, 2026: PIN. MISSING. AIRCRAFT WAS GROUNDED: FA ADVISES SHORTLY AFTER TAKEOFF LOUD SQUEAL FROM L1 FORWARD ENT RY DOOR. NOICE SEEMED TO BE COMING FROM DOOR HINGE AREA. REPEAT WRITE UP
- [SDR AALA202606300682](https://openairdocs.org/sdr/AALA202606300682), Jun 27, 2026: LIGHT. FAULTY. AIRCRAFT WAS NOT GROUNDED: 16A EMERGENCY EXIT ROW SIDE WALL LIGHT STROBING PURPLE. MULTIPLEWRITE UPS. MAINTENANCE REPLACED EMERGENCY EXIT SIDEWALL LIGHT 16A IAW
- [SDR AALA202603315954](https://openairdocs.org/sdr/AALA202603315954), Mar 30, 2026: DOOR SEAL. CUT. AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: L1 DOOR MAKING SO MUCH NOISE, UNBEARABLE TO EVERYONE IN THE CABIN. AIRCRAFT AIR INTERRUPTED BACK TO AND
- [SDR AALA202602247710](https://openairdocs.org/sdr/AALA202602247710), Feb 23, 2026: GIRT BAR. LACK OF LUBE. AIRCRAFT WAS NOT GROUNDED: LUBRICATION NEEDED ON BOTH REAR EXIT DOORS GIRT BARS. LUBRICATED AND REPOSITIONED BOTH AFT DOOR GIRT BARS. PER AMM 52-20-00.
- [SDR AALA202601153878](https://openairdocs.org/sdr/AALA202601153878), Jan 13, 2026: GIRT BAR. LACK OF LUBE. AIRCRAFT WAS NOT GROUNDED: FORWARD SERVICE DOOR GIRT BAR ON LEFT SIDE IS STUCK AND THE GUST LOCK WAS VERY DIFFICULT TO UNLOCK. LUBRICATED GIRT BAR GUST LOCK. OP
- [SDR AALA202510094847](https://openairdocs.org/sdr/AALA202510094847), Oct 8, 2025: FLASHLIGHT. NO TEST. AIRCRAFT WAS NOT GROUNDED: FLIGHT ATTENDANT FORWARD SEAT FLASHLIGHT INOPERATIVE. REMOVED AND REPLACED FLASHLIGHT BATTERIES. PER AMM 25-64-00. OPERATIONAL CHECK 
- [SDR AALA202509161383](https://openairdocs.org/sdr/AALA202509161383), Sep 11, 2025: FIRE DETECTOR. FAULT MESSAGE. AIRCRAFT WAS GROUNDED: CLIMBING THROUGH AROUND FL230, WE RECEIVED 2 OVERHEAT DETECTION ALERTS FOLLOWED BY A FIRE BELL AND ENGINE 2 OVERHEAT. NO FIRE HANDLES ILL
- [SDR AALA202509165144](https://openairdocs.org/sdr/AALA202509165144), Sep 11, 2025: WIRE HARNESS. FAULTY. AIRCRAFT WAS GROUNDED: CLIMBING THROUGH AROUND FL230, WE RECEIVED 2 OVERHEAT DETECTION ALERTS FOLLOWED BY A FIRE BELL AND ENGINE 2 OVERHEAT. NO FIRE HANDLES ILL
- [SDR AALA202509121383](https://openairdocs.org/sdr/AALA202509121383), Sep 11, 2025: FIRE LOOP. FAULTED. AIRCRAFT WAS GROUNDED: CLIMBING THROUGH AROUND FL230, WE RECEIVED 2 OVERHEAT DETECTION ALERTS FOLLOWED BY A FIRE BELL AND ENGINE 2 OVERHEAT. NO FIRE HANDLES ILL
- [SDR AALA202507162816](https://openairdocs.org/sdr/AALA202507162816), Jul 13, 2025: SIGN. DISLODGED. AIRCRAFT WAS NOT GROUNDED: LEFT AFT DOOR EXIT SIGN HAS COME OFF. LEFT AFT DOOR EXIT SIGN LENS REINSTALLED. PER AMM 33-51-01. OPERATIONAL CHECK GOOD.
- [SDR AALA202506174616](https://openairdocs.org/sdr/AALA202506174616), Jun 14, 2025: LINER. DAMAGED. AIRCRAFT WAS NOT GROUNDED: SLEEVE ATTACHED TO GIRT BAR ON FORWARD ENTRY DOOR IS SAGGING AND LOOSE. ADJUSED SLEEVE ON FORWARD ENTRY DOOR SLIDE. PER AMM-25-66-00.
- [SDR AALA202505068726](https://openairdocs.org/sdr/AALA202505068726), May 6, 2025: ANGLE. CRACKED. AIRCRAFT IN BASE MAINTENANCE: CRACK IN FORWARD CARGO COMPARTMENT BAFFLE CLIP AT BS 500G, RBL 26. REPLACED BAFFLE CLIP PER AARD 51-00-05-1,
- [SDR AALA202504242642](https://openairdocs.org/sdr/AALA202504242642), Apr 23, 2025: SIGN. DISLODGED. AIRCRAFT WAS NOT GROUNDED: EMERGENCY EXIT SIGN MID CABIN IS HANGING FROM WIRES. SECURED EXIT SIGN, EMERGENCY EXIT LIGHTS CHECKED GOOD. PER AMM 33-51-00.
- [SDR AALA202503139685](https://openairdocs.org/sdr/AALA202503139685), Mar 12, 2025: BAFFLE. CORRODED. AIRCRAFT IN BASE MAINTENANCE: CORROSION ON FORWARD CARGO COMPARTMENT BAFFLE FROM STA 500C PLUS 16 INCHES TO STA 500C PLUS 20 INCHES AT LBL 25. REPLACED BAFFLE P
- [SDR AALA202503108371](https://openairdocs.org/sdr/AALA202503108371), Mar 9, 2025: VAPOR BARRIER. CRACKED. AIRCRAFT IN BASE MAINTENANCE: LEFT HAND WHEEL WELL VAPOR BARRIER HAS A 7-INCH CRACK AT LBL 31.83 OUTBOARD OF PACK EXHAUST DUCT. INSTALLED FABRIC REPAIR PATCH ON
- [SDR AALA202503107520](https://openairdocs.org/sdr/AALA202503107520), Mar 9, 2025: VAPOR BARRIER. CRACKED. AIRCRAFT IN BASE MAINTENANCE: RIGHT HAND WHEEL WELL VAPOR BARRIER CRACKED 11 INCHES AT BOTTOM OF SYSTEM-B RETURN FILTER OUTBOARD OF PACK EXHAUST DUCT. INSTALLED
- [SDR AALA202503070007](https://openairdocs.org/sdr/AALA202503070007), Feb 28, 2025: FLOOR SUPPORT. CRACKED. AIRCRAFT IN BASE MAINTENANCE: CRACK IN PASSENGER CABIN FLOOR STRUCTURE INTERCOSTAL FROM STA 341 TO STA 360 AT BL 0. REPLACED INTERCOSTAL PER AARD 51-00-05-1.
- [SDR AALA202503136156](https://openairdocs.org/sdr/AALA202503136156), Feb 27, 2025: TRANSITION PANEL. CORRODED. AIRCRAFT IN BASE MAINTENANCE: CORROSION ON FORWARD CARGO COMPARTMENT TRANSITION PANEL FROM STA 500A PLUS 12 INCHES TO STA 500I, S25L, LBL 22. REPLACED TRANSITIO
- [SDR AALA202503138239](https://openairdocs.org/sdr/AALA202503138239), Feb 27, 2025: BAFFLE. CORRODED. AIRCRAFT IN BASE MAINTENANCE: CORROSION ON FORWARD CARGO COMPARTMENT FLOOR STRUCTURE BAFFLE FROM STA 500D TO STA 500E AT LBL 25. REPLACED BAFFLE PER AARD 51-00-
- [SDR AALA202503123675](https://openairdocs.org/sdr/AALA202503123675), Feb 27, 2025: WEB. CORRODED. AIRCRAFT IN BASE MAINTENANCE: CORROSION ON AFT CARGO COMPARTMENT DOOR LOWER CUTOUT WEB LOCATED FROM STA 767 TO STA 787, S25R, RBL 22. REPLACED WEB PER AARD 51-0
- [SDR AALA202503129704](https://openairdocs.org/sdr/AALA202503129704), Feb 27, 2025: TRANSITION PANEL. CORRODED. AIRCRAFT IN BASE MAINTENANCE: CORROSION ON AFT CARGO COMPARTMENT TRANSITION PANEL FROM BS 727I TO BS 767, S25R, RBL 22. REPLACED TRANSITION PANEL PER AARD 51-00
- [SDR AALA202503076923](https://openairdocs.org/sdr/AALA202503076923), Feb 27, 2025: FLOORBEAM. CORRODED. AIRCRAFT IN BASE MAINTENANCE: CORROSION ON UPPER CHORD OF FLOOR BEAM AT BS 295, LBL 11. REPAIRED FLOOR BEAM UPPER CHORD PER SRM 53-10-51-2R-14.
- [SDR AALA202503071709](https://openairdocs.org/sdr/AALA202503071709), Feb 27, 2025: TRANSITION PANEL. CORRODED. AIRCRAFT IN BASE MAINTENANCE: CORROSION ON FORWARD CARGO COMPARTMENT TRANSITION PANEL FROM STA 500A TO STA 500I AT S25R, RBL 43. REPLACED TRANSITION PANEL PER A
- [SDR AALA202503077210](https://openairdocs.org/sdr/AALA202503077210), Feb 27, 2025: SHIELD. CORRODED. AIRCRAFT IN BASE MAINTENANCE: CORROSION ON AFT CARGO COMPARTMENT SHIELD FROM STA 767 TO STA 787, AT S25R, RBL 22. REPLACED SHIELD PER AARD 51-00-05-1.
- [SDR AALA202411204703](https://openairdocs.org/sdr/AALA202411204703), Nov 18, 2024: SILL DRAIN. CLOGGED. AIRCRAFT WAS NOT GROUNDED: SMELL (ROTTEN EGGS) EMANATING FROM AFT CABIN UPON LANDING. FOUND CAUSE OF SMELL IN AFT GALLEY, AFT SILL DRAIN FLOAT VALVE COMPLETELY 
- [SDR AALA202411011014](https://openairdocs.org/sdr/AALA202411011014), Nov 1, 2024: CONNECTOR. BROKEN. AIRCRAFT WAS NOT GROUNDED: EMERGENCY LIGHT WIRING AT SEAT 3B SEAT PAN HAS BROKEN CONNECTOR. RECONNECTED CONNECTOR, CONNECTOR SECURED AND OPERTIONAL CHECKS GOOD.
- [SDR AALA202406210555](https://openairdocs.org/sdr/AALA202406210555), Jun 15, 2024: LIGHT. DETACHED. AIRCRAFT WAS NOT GROUNDED: EMERGENCY EXIT LIGHTING DETACHED DURING LANDING FOR FROWARD ENTRY DOOR R1. ADJUSTED CLIP OF R1 DOOR EMERGENCY LIGHT LENS. PER AMM 33-
- [SDR AALA202406180555](https://openairdocs.org/sdr/AALA202406180555), Jun 15, 2024: LIGHT. DETACHED. AIRCRAFT WAS NOT GROUNDED: EMERGENCY EXIT LIGHTING DETACHED DURING LANDING FOR FROWARD ENTRY DOOR R1. **SUPPLEMENTAL REPORT WILL BE SUBMITTED**(OPEN).
- [SDR AALA202404171135](https://openairdocs.org/sdr/AALA202404171135), Apr 16, 2024: MOUNT. DAMAGED. AIRCRAFT IN BASE MAINTENANCE: RIGHT HAND EMERGENCY LIGHT AT ROW 17DEF LENS MOUNT DAMAGED. REPLACED RIGHT HAND EMERGENCY EXIT LIGHT BASE PLATE AT ROW 17DEF. FUNC
- [SDR AALA202402268212](https://openairdocs.org/sdr/AALA202402268212), Feb 25, 2024: FLASHLIGHT. INOPERATIVE. AIRCRAFT WAS NOT GROUNDED: FOUND L1 DOOR FLIGHT ATTENDANT FLASHLIGHT INOPERATIVE. REMOVED AND REPLACED L1 DOOR FLIGHT ATTENDANT FLASHLIGHT. PER AMM 25-64-00.
- [SDR AALA202402266027](https://openairdocs.org/sdr/AALA202402266027), Feb 18, 2024: DOOR. FAULTY. AIRCRAFT WAS NOT GROUNDED: AFT LEFT HAND LAVATORY DOOR DIFFICULT TO OPEN AND CLOSE. REMOVED AND REPLACED AFT LEFT DOOR. PER CMM 25-40-64.
- [SDR AALA202402196027](https://openairdocs.org/sdr/AALA202402196027), Feb 18, 2024: DOOR. BINDING. AIRCRAFT WAS NOT GROUNDED: AFT LEFT HAND LAVATORY DOOR DIFFICULT TO OPEN AND CLOSE. (OPEN).
- [SDR AALA202401223184](https://openairdocs.org/sdr/AALA202401223184), Jan 17, 2024: DOOR. INOPERATIVE. AIRCRAFT WAS NOT GROUNDED: LAVATORY D DIFFICULT TO LOCK AND UNLOCK. ACCOMPLISHED AARD 25-40-10-10 FOR LAVATORY D HINGE. OPERTIONAL CHECKS GOOD.**(CLOSED).
- [SDR AALA202401183184](https://openairdocs.org/sdr/AALA202401183184), Jan 17, 2024: LOCK. UNKNOWN. AIRCRAFT WAS NOT GROUNDED: LAVATORY D DIFFICULT TO LOCK AND UNLOCK.**SUPPLEMENTAL REPORT WILL BE SUBMITTED**(OPEN).
- [SDR AALA202311170453](https://openairdocs.org/sdr/AALA202311170453), Nov 16, 2023: BATTERY. INOPERATIVE. AIRCRAFT WAS NOT GROUNDED: THE AFT GALLEY LEFT FLASHLIGHT DOES NOT WORK. REMOVED AND REPLACED AFT LEFT FLASHLIGHT ASSEMBLY (AALA202311174749) AND FLASHLIGHT BAT
- [SDR AALA202311174749](https://openairdocs.org/sdr/AALA202311174749), Nov 16, 2023: FLASHLIGHT. INOPERATIVE. AIRCRAFT WAS NOT GROUNDED: THE AFT GALLEY LEFT FLASHLIGHT DOES NOT WORK. REMOVED AND REPLACED AFT LEFT FLASHLIGHT ASSEMBLY (AALA202311174749) AND FLASHLIGHT BAT
- [SDR AALA202311156147](https://openairdocs.org/sdr/AALA202311156147), Nov 14, 2023: DOOR LATCH. OUT OF ADJUST. AIRCRAFT WAS NOT GROUNDED: AFT LAVATORY D DOOR LATCH DIFFICULT TO CLOSE AND OPEN. ADJUSTED LAVATORY D DOOR LATCH. FUNCTIONAL CHECK GOOD. PER CMM 25-40-64.
- [SDR AALA202307119127](https://openairdocs.org/sdr/AALA202307119127), Jul 10, 2023: LAMP. INOPERATIVE. AIRCRAFT WAS NOT GROUNDED: EMERGENCY EXIT LIGHT NOT ARMED AMBER LIGHT HAS ONE LAMP INOPERATIVE. REPLACED LAMPS.
- [SDR AALA202304032554](https://openairdocs.org/sdr/AALA202304032554), Mar 31, 2023: SLIDING WINDOW. UNSERVICEABLE. AIRCRAFT WAS GROUNDED: CAPTAINÏ¿½S SIDE WINDOW OPENED ON TAKEOFF. REJECTED TAKEOFF AT 80 KNOTS. MAINTENANCE REPLACED CAPTAINÏ¿½S #2 WINDOW PER JOB CARD 08L21056
- [SDR AALA202303153193](https://openairdocs.org/sdr/AALA202303153193), Mar 14, 2023: DOOR LATCH. OUT OF ADJUST. AIRCRAFT WAS NOT GOURDED: FLIGHT DECK DOOR DIFFICULT TO CLOSE. ADJUSTED AND LUBRICATED DOOR LATCH ASSEMBLY PER AMM 52-51-01. ACCOMPLISHED SATISFACTORY OPERATION
- [SDR AALA202207260709](https://openairdocs.org/sdr/AALA202207260709), Jul 24, 2022: SIGN. UNSECURE. AIRCRAFT WAS NOT GROUNDED: EXIT SIGN ON CEILING AT OVER WING EXIT IS DANGLING BY ITS POWER CORD. SECURED EXIT SIGN.
- [SDR AALA202207211310](https://openairdocs.org/sdr/AALA202207211310), Jul 20, 2022: TIE. MISSING. AIRCRAFT WAS NOT GROUNDED: LADDER TIES MISSING FROM L1 DOOR SLIDE COVER. REPAIRED PER EA 337748.
- [SDR AALA202207067972](https://openairdocs.org/sdr/AALA202207067972), Jul 5, 2022: BATTERY PACK. INTERMITTENT. AIRCRAFT IN BASE MAINTENANCE: EMERGENCY EXIT LIGHT IN CEILING AFT GALLEY AND ADJACENT TO DOOR 2L WERE INTERMITTENT. REMOVED AND REPLACED BATTERY PACK POWER SUPP
- [SDR AALA202207054259](https://openairdocs.org/sdr/AALA202207054259), Jul 3, 2022: BUSHING. EXCESS PLAY. AIRCRAFT IN BASE MAINTENANCE: EXCESSIVE PLAY, LEFT HAND HORIZONTAL STABILIZER ELEVATOR TAB, HINGE 6. REPLACED HINGE BUSHINGS PER AMM 27-31-31-000-801 AND AMM 27
- [SDR AALA202207054025](https://openairdocs.org/sdr/AALA202207054025), Jul 3, 2022: BUSHING. EXCESS PLAY. AIRCRAFT IN BASE MAINTENANCE: EXCESSIVE PLAY, LEFT HAND HORIZONTAL STABILIZER ELEVATOR TAB, HINGE 5. REPLACED HINGE BUSHINGS PER AMM 27-31-31-000-801 AND AMM 27
- [SDR AALA202206240572](https://openairdocs.org/sdr/AALA202206240572), Jun 23, 2022: LIFE RAFT. LOW PRESSURE. AIRCRAFT IN BASE MAINTENANCE: AFT PASSENGER CABIN LIFT RAFT LOW PRESSURE. REPLACED TOURIST CLASS AFT POSITION LIFE RAFT PER AMM 25-64-00-900-810.
- [SDR AALA202205231645](https://openairdocs.org/sdr/AALA202205231645), May 22, 2022: SWITCH. OUT OF ADJUST. AIRCRAFT WAS NOT GROUNDED: TAKEOFF CONFIGURATION WARN HORN AND LIGHT ON TAKEOFF ROLL. PSEU LIGHT ILLUMINATION. REJECTED TAKEOFF. ADJUSTED SPEEDBRAKE TAKEOFF WAR
- [SDR AALA202203303172](https://openairdocs.org/sdr/AALA202203303172), Mar 27, 2022: SCREW. MISSING. AIRCRAFT WAS NOT GROUNDED: EMERGENCY LIGHT BRACKET IS LOOSE 27C. FOUND FORWARD SCREW MISSING ON SEAT SHROUD. REPLACED SCREW PER CMM 25-21-61.
- [SDR AALA202106159003](https://openairdocs.org/sdr/AALA202106159003), Jun 14, 2021: GIRT BAR. OUT OF POSITION. AIRCRAFT WAS NOT GROUNDED: GIRT BAR ON 1L FELL OUT DURING OPENING OF DOOR SLIDE PACK APPEARS LOW IN SLIDE CASING. REMOVED SLIDE 1L DOOR REATTACHED VELCRO REINST

All 74: https://openairdocs.org/aircraft/N921NN/reports.md

## STCs that may be installed (OpenAirDocs) (785, first 50)

Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do.

### Approved for the airframe (Boeing 737-823)

- [STC ST03438NY](https://openairdocs.org/stc/ST03438NY): Installation of Adams Rite Lavatory Equipment. Delta Engineering Corporation
- [STC ST04116NY](https://openairdocs.org/stc/ST04116NY): Update of a Cabin Interior. Delta Engineering Corporation
- [STC ST04669CH](https://openairdocs.org/stc/ST04669CH): Installation of Honeywell Advanced Communications and Entertainment System (ACES). Honeywell Aerospace
- [STC ST09933AC](https://openairdocs.org/stc/ST09933AC): Expansion of parameters in the digital flight data acquisition unit (DFDAU). L2 Aviation
- [STC ST02269NY](https://openairdocs.org/stc/ST02269NY): Installation of Self Illuminating Floor Path Marking System. Lufthansa Technik AG
- [STC ST12461IB](https://openairdocs.org/stc/ST12461IB): Installation of Cockpit Voice Recorder with optional RIPS Upgrade. Mid- Canada Mod Center
- [STC ST00885LA](https://openairdocs.org/stc/ST00885LA): Installation of fire extinguisher cartridges as replacements for Pacific Scientific fire extinguisher cartridges in fire extinguisher bottles. AMETEK AMERON, LLC d/b/a MASS Systems
- [STC ST02528LA](https://openairdocs.org/stc/ST02528LA): Installation of the Thales Avionics, Inc. Data Transfer Device (DTD) or Solid State Drive (SSD) into the existing Cabin Media Loader (CML). Thales Avionics Inc
- [STC ST12443LA](https://openairdocs.org/stc/ST12443LA): Installation of Teledyne Controls Edge Computing Platform (ECP). Teledyne Controls, LLC
- [STC ST12432IB](https://openairdocs.org/stc/ST12432IB): Installation of Acro Series 9 Seats Economy Class Seats in 189 Y/C layout. KNSI AVIATION ENGINEERING EUROPE LTD
- [STC ST10477SC](https://openairdocs.org/stc/ST10477SC): Installation of two Interior configurations in Boeing 737-8EX (MSN 33473). Jet Aviation St. Louis Inc
- [STC ST09853DS](https://openairdocs.org/stc/ST09853DS): Dual Radome Aerodynamic Validation. United Airlines
- [STC ST04254NY](https://openairdocs.org/stc/ST04254NY): Installation of Viasat Satcom Software. ALOFT AeroArchitects
- [STC ST02666LA](https://openairdocs.org/stc/ST02666LA): Installation of main deck cargo loading system. Ancra International LLC
- [STC ST04281NY](https://openairdocs.org/stc/ST04281NY): Replacement of Aft Lavatories. B/E Aerospace Limited
- [STC ST09927AC](https://openairdocs.org/stc/ST09927AC): Installation of a Gables Audio Management System. L2 Aviation
- [STC ST10928SC](https://openairdocs.org/stc/ST10928SC): Installation of an Iridium Communications System. L2 Aviation
- [STC ST02690LA](https://openairdocs.org/stc/ST02690LA): Conversion of a Boeing 737-800 series passenger configuration to a freighter configuration, incorporating a new main deck cargo door, interior, and associated systems. Aeronautical Engineers Inc
- [STC ST00197IB](https://openairdocs.org/stc/ST00197IB): Installation of the Universal Quick Access Recorder (uQAR). Flight Data Technologies Inc
- [STC ST04040CH](https://openairdocs.org/stc/ST04040CH): Activation of Smart Runway and Smart Landing (SRSL) Runway Awareness Advisory System (RAAS) Functions for Honeywell Mark V and Mark V-A Enhanced Ground Proximity Warning Systems (EGPWS). Honeywell International Inc
- [STC ST02747LA](https://openairdocs.org/stc/ST02747LA): Installation of the Thales Digital Server Unit. Thales Avionics, Inc
- [STC ST00555AT](https://openairdocs.org/stc/ST00555AT): Installation of Airshow 210 system. AIRCRAFT RECONFIG TECHNOLOGIES, LLC. Lists 737 Series
- [STC ST02347AT-D](https://openairdocs.org/stc/ST02347AT-D): Installation of Collins HF Transceivers. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST03197AT](https://openairdocs.org/stc/ST03197AT): Interior reconfiguration. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST03200AT](https://openairdocs.org/stc/ST03200AT): Complete interior reconfiguration. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST03631AT-D](https://openairdocs.org/stc/ST03631AT-D): Installation of Windscreen with Stretcher Access and Stowage Box., Aft of the L1 Entry Door. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST03816AT-D](https://openairdocs.org/stc/ST03816AT-D): Installation of an Interior Reconfiguration. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST04167AT](https://openairdocs.org/stc/ST04167AT): Interior Reconfiguration. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST04197AT](https://openairdocs.org/stc/ST04197AT): Cabin interior reconfiguration installation. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST04207AT](https://openairdocs.org/stc/ST04207AT): Cabin interior reconfiguration installation. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST04208AT](https://openairdocs.org/stc/ST04208AT): Panasonic IFE Upgrade installation. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST04250AT](https://openairdocs.org/stc/ST04250AT): Interior reconfiguration installation. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST04271AT](https://openairdocs.org/stc/ST04271AT): Interior reconfiguration installation. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST04280AT](https://openairdocs.org/stc/ST04280AT): Interior reconfiguration installation. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST04363AT](https://openairdocs.org/stc/ST04363AT): Interior reconfiguration installation. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST04383AT](https://openairdocs.org/stc/ST04383AT): Interior reconfiguration installation on a Boeing 737-800 Series aircraft. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST04389AT](https://openairdocs.org/stc/ST04389AT): Interior reconfiguration installation. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST04392AT](https://openairdocs.org/stc/ST04392AT): Main Cabin Cargo Carry Provisions installation. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST04395AT](https://openairdocs.org/stc/ST04395AT): Interior Reconfiguration installation. ZIM Aircraft Cabin Solutions LLC
- [STC ST04396AT](https://openairdocs.org/stc/ST04396AT): Interior Reconfiguration installation. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST04397AT](https://openairdocs.org/stc/ST04397AT): Interior Reconfiguration installation. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST04496AT](https://openairdocs.org/stc/ST04496AT): Interior Reconfiguration. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST00952LA](https://openairdocs.org/stc/ST00952LA): Installation of Mass Systems fire extinguisher cartridges as replacements for Kidde fire extinguisher cartridges in fire extinguisher bottles. AMETEK AMERON LLC d/b/a MASS Systems
- [STC ST04667CH](https://openairdocs.org/stc/ST04667CH): Installation of Southwest Airlines Interior Reconfiguration for Extended Leg Room (ELR) Cabin. Astronics Connectivity Systems and Certification Corp
- [STC ST03735NY](https://openairdocs.org/stc/ST03735NY): Installation of a ViaSat KA SATCOM Antenna System. ALOFT AeroArchitects
- [STC ST04328NY](https://openairdocs.org/stc/ST04328NY): The Manufacture and Installation of Exterior Placards, Labels and Signs is to be performed, installed. Libellule Monde Inc
- [STC ST04593CH](https://openairdocs.org/stc/ST04593CH): Installation of Astronics EmPower In-Seat Power System. Astronics Connectivity Systems and Certification Corp
- [STC ST03875NY](https://openairdocs.org/stc/ST03875NY): Installation of interior placards, signs and markings. Libellule Monde Inc
- [STC ST03405NY](https://openairdocs.org/stc/ST03405NY): Installation (with demod option) of an Connectivity Antenna. Delta Engineering Corporation
- [STC ST02575SE](https://openairdocs.org/stc/ST02575SE): Installation of an In-Seat Power Supply System. Northwest Aerospace Technologies Inc

All 785: https://openairdocs.org/aircraft/N921NN/stcs.md

## Related

- Other Boeing 737-823 aircraft: https://openairdocs.org/model/boeing-737-823/aircraft.md
- The CFM International CFM56-7B24E series engine: https://openairdocs.org/engine/cfm-international-cfm56-7b24e-series.md

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