# N2251U: 2020 Boeing 777-300ER

- Status: Valid registration
- Airframe: [Boeing 777-300ER](https://openairdocs.org/model/boeing-777-300er) (registry code 1385256, 552 seats)
- Engine: [GE GE90-115B](https://openairdocs.org/engine/ge-ge90-115b) (registry code 30048)
- Data sheets: [TCDS T00001SE](https://openairdocs.org/tcds/T00001SE) (The Boeing Company), [TCDS E00049EN](https://openairdocs.org/tcds/E00049EN) (General Electric Company GE Aviation) (OpenAirDocs)
- Serial number: 66591
- Year built: 2020
- Type: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: January 28, 2020
- Certificate issued: January 29, 2020
- Expires: January 31, 2030
- Mode S code: A1F622
- Registered owner: [United Airlines Inc](https://openairdocs.org/faa-owner/UNITED%20AIRLINES%20INC)
- Location: [Chicago, IL](https://openairdocs.org/faa-place/IL/Chicago)
- Owner type: Corporation
- Owner's area on the map: 41.8813° N, 87.6375° W: Placed by OpenAirDocs at the center of ZIP code 60606, 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=2251U
- Page: https://openairdocs.org/aircraft/N2251U

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.

## ADs that may apply (OpenAirDocs): 136 in force

### Matched by airframe (Boeing 777-300ER)

- [AD 2026-19-04](https://openairdocs.org/ad/2026-19-04): Hydraulic Power · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Nov 2, 2026
- [AD 2026-15-02](https://openairdocs.org/ad/2026-15-02): Fuel · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Sep 1, 2026
- [AD 2026-13-10](https://openairdocs.org/ad/2026-13-10): Navigation · Boeing 747-8 Series, 747-8F Series, 777-200 Series and 4 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 2026-05-15](https://openairdocs.org/ad/2026-05-15): Lights · Boeing 777-200LR Series and 777-300ER Series. Effective Apr 20, 2026
- [AD 2025-21-02](https://openairdocs.org/ad/2025-21-02): Flight controls · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Jan 2, 2026
- [AD 2025-15-09](https://openairdocs.org/ad/2025-15-09): Equipment/furnishings · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Aug 21, 2025
- [AD 2025-05-10](https://openairdocs.org/ad/2025-05-10): Flight Controls, Fuel, Landing Gear, Doors, Fuselage, Nacelles/Pylons, Stabilizers, Wings · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective May 13, 2025
- [AD 2025-06-12](https://openairdocs.org/ad/2025-06-12): Auto flight · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective May 2, 2025
- [AD 2025-06-02](https://openairdocs.org/ad/2025-06-02): Wings · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Apr 23, 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 2024-16-09](https://openairdocs.org/ad/2024-16-09): Fuselage · Boeing 777-200 Series, 777-200LR Series, 777-300ER Series and 2 more. Effective Nov 12, 2024
- [AD 2024-15-07](https://openairdocs.org/ad/2024-15-07): Fuel · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Oct 15, 2024
- [AD 2024-04-09](https://openairdocs.org/ad/2024-04-09): Instruments · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Apr 23, 2024
- [AD 2024-01-07](https://openairdocs.org/ad/2024-01-07): Flight controls · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Mar 7, 2024
- [AD 2023-21-09](https://openairdocs.org/ad/2023-21-09): Flight controls · Boeing 777-200LR Series, 777-200 Series, 777-300 Series and 2 more. Effective Dec 18, 2023
- [AD 2023-17-14](https://openairdocs.org/ad/2023-17-14): Wings · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Sep 15, 2023
- [AD 2023-08-05](https://openairdocs.org/ad/2023-08-05): Fuselage · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Jun 30, 2023
- [AD 2023-12-05](https://openairdocs.org/ad/2023-12-05): Navigation · Boeing 747-8F Series, 747-8 Series, 777-200 Series and 4 more. Effective Jun 21, 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 2023-03-04](https://openairdocs.org/ad/2023-03-04): Wings · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Apr 4, 2023
- [AD 2022-23-11](https://openairdocs.org/ad/2022-23-11): Fuel · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Jan 4, 2023
- [AD 2022-14-05](https://openairdocs.org/ad/2022-14-05): Flight Controls · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Oct 12, 2022
- [AD 2022-11-05](https://openairdocs.org/ad/2022-11-05): Wings · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Jul 20, 2022
- [AD 2021-24-12](https://openairdocs.org/ad/2021-24-12): Fuel, Inert Gas System · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Feb 1, 2022
- [AD 2021-19-15](https://openairdocs.org/ad/2021-19-15): Equipment/furnishings · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 1 more. Effective Jan 19, 2022
- [AD 2021-18-09](https://openairdocs.org/ad/2021-18-09): Fuselage · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Oct 22, 2021
- [AD 2021-13-10](https://openairdocs.org/ad/2021-13-10): Wings · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Aug 19, 2021
- [AD 2021-13-02](https://openairdocs.org/ad/2021-13-02): Equipment/Furnishings · Boeing 777-300ER Series. Effective Aug 19, 2021
- [AD 2020-22-10](https://openairdocs.org/ad/2020-22-10): Equipment/furnishings · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 1 more. Effective Jan 14, 2021
- [AD 2020-11-11](https://openairdocs.org/ad/2020-11-11): Fuel · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Jun 18, 2020
- [AD 2020-04-19](https://openairdocs.org/ad/2020-04-19): Auto flight · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Apr 21, 2020
- [AD 2019-25-14](https://openairdocs.org/ad/2019-25-14): Fuselage · Boeing 777-300ER Series and 777F Series. Effective Feb 10, 2020
- [AD 2019-25-12](https://openairdocs.org/ad/2019-25-12): Oxygen · Boeing 777-200 Series and 777-300ER Series. Effective Jan 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 2019-11-02](https://openairdocs.org/ad/2019-11-02): Fuselage · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Jul 5, 2019
- [AD 2018-26-05](https://openairdocs.org/ad/2018-26-05): Fuel · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 1 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
- [AD 2018-12-04](https://openairdocs.org/ad/2018-12-04): Equipment/furnishings · Boeing 777-300ER Series. Effective Jun 25, 2018
- [AD 2018-02-20](https://openairdocs.org/ad/2018-02-20): Fuselage · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 1 more. Effective Mar 16, 2018
- [AD 2017-13-14](https://openairdocs.org/ad/2017-13-14): Equipment/furnishings · Boeing 777-300ER Series. Effective Aug 9, 2017
- [AD 2017-11-14](https://openairdocs.org/ad/2017-11-14): Wings · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Jul 11, 2017
- [AD 2016-23-02](https://openairdocs.org/ad/2016-23-02): Nacelles/pylons · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Dec 30, 2016
- [AD 2016-21-05](https://openairdocs.org/ad/2016-21-05): Fuel Boost Pump · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 1 more. Effective Dec 19, 2016
- [AD 2016-17-10](https://openairdocs.org/ad/2016-17-10): Landing gear · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Sep 30, 2016
- [AD 2016-11-03](https://openairdocs.org/ad/2016-11-03): Fuel · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Jul 6, 2016
- [AD 2016-08-03](https://openairdocs.org/ad/2016-08-03): Wings · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 1 more. Effective May 18, 2016
- [AD 2016-06-05](https://openairdocs.org/ad/2016-06-05): Nacelles/Pylons · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Apr 22, 2016
- [AD 2016-04-20](https://openairdocs.org/ad/2016-04-20): Fuel · Boeing 737-600 Series, 737-700 Series, 737-700C Series and 16 more. Effective Apr 5, 2016
- [AD 2015-25-08](https://openairdocs.org/ad/2015-25-08): Fuselage · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Jan 28, 2016

### Matched by engine (GE GE90-115B)

- [AD 2025-25-07](https://openairdocs.org/ad/2025-25-07): Turbine Section · General Electric Company GE GE90-90B, GE90-94B, GE90-110B1 and 1 more. Effective Feb 6, 2026
- [AD 2025-07-10](https://openairdocs.org/ad/2025-07-10): Fuel Controlling System · General Electric Company GE GE90-110B1 and GE90-115B. Effective May 21, 2025
- [AD 2024-06-15](https://openairdocs.org/ad/2024-06-15): Turbine Section · General Electric GE90-110B1 and GE90-115B. Effective May 14, 2024
- [AD 2023-26-07](https://openairdocs.org/ad/2023-26-07): Turbine Section · General Electric GE90-90B, GE90-94B, GE90-110B1 and 1 more. Effective Feb 27, 2024
- [AD 2023-04-19](https://openairdocs.org/ad/2023-04-19): Turbine Engine Compressor Section · General Electric GE90-110B1 and GE90-115B. Effective Mar 27, 2023
- [AD 2022-23-09](https://openairdocs.org/ad/2022-23-09): Turbine Engine Compressor Section, Turbine Section · General Electric GE90-90B, GE90-94B, GE90-110B1 and 1 more. Effective Jan 17, 2023
- [AD 2022-18-06](https://openairdocs.org/ad/2022-18-06): Turbine Engine Compressor Section, Turbine Section · General Electric GE90-110B1, GE90-115B, GE90-76B and 3 more. Effective Oct 26, 2022
- [AD 2021-26-06](https://openairdocs.org/ad/2021-26-06): Turbine Engine Accessory Drive · General Electric GE90-76B, GE90-85B, GE90-90B and 3 more. Effective Feb 15, 2022
- [AD 2020-21-13](https://openairdocs.org/ad/2020-21-13): Turbine Section · General Electric GE90-110B1 and GE90-115B. Effective Nov 17, 2020
- [AD 2020-18-14](https://openairdocs.org/ad/2020-18-14): Turbine Section · General Electric GE90-110B1 and GE90-115B. Effective Oct 21, 2020
- [AD 2020-10-04](https://openairdocs.org/ad/2020-10-04): Turbine Section · General Electric GE90-110B1 and GE90-115B. Effective May 27, 2020
- [AD 2020-01-55](https://openairdocs.org/ad/2020-01-55): Turbine Section · General Electric GE90-110B1 and GE90-115B. Effective Mar 2, 2020
- [AD 2019-21-51](https://openairdocs.org/ad/2019-21-51): Turbine Section · General Electric GE90-115B. Effective Dec 6, 2019
- [AD 2018-20-23](https://openairdocs.org/ad/2018-20-23): Turbine Engine Compressor Section · General Electric GE90-110B1 and GE90-115B. Effective Nov 30, 2018
- [AD 2018-20-22](https://openairdocs.org/ad/2018-20-22): Turbine Section · General Electric GE90-110B1, GE90-113B and GE90-115B. Effective Nov 13, 2018
- [AD 2017-08-06](https://openairdocs.org/ad/2017-08-06): Engine Oil Cooler · General Electric GE90-110B1, GE90-115B, GE90-76B and 3 more. Effective May 22, 2017
- [AD 2013-23-18](https://openairdocs.org/ad/2013-23-18): Variable bypass valve (VBV) actuator fuel supply tube · General Electric GE90-110B1 and GE90-115B. Effective Jan 7, 2014
- [AD 2013-17-07](https://openairdocs.org/ad/2013-17-07): Stage 1 high-pressure turbine (HPT) stator shrouds · General Electric GE90-110B1, GE90-115B, GE90-76B and 3 more. Effective Oct 18, 2013
- [AD 2013-15-20](https://openairdocs.org/ad/2013-15-20): Transfer gearbox assembly (TGB) radial gearshafts · General Electric GE90-110B1, GE90-113B, GE90-115B and 5 more. Effective Aug 21, 2013
- [AD 2011-26-11](https://openairdocs.org/ad/2011-26-11): HPC stages 1-2 seal teeth · General Electric GE90-110B1 and GE90-115B. Effective Feb 3, 2012
- [AD 2009-25-14](https://openairdocs.org/ad/2009-25-14): Blade · General Electric GE90-110B1, GE90-113B and GE90-115B. Effective Jan 19, 2010
- [AD 2007-10-05](https://openairdocs.org/ad/2007-10-05): Turbine Center Frames (TCFs) · General Electric GE90-110B1, GE90-113B and GE90-115B. Effective Jun 14, 2007

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

- [AD 2024-19-14](https://openairdocs.org/ad/2024-19-14) (historical): Fuel · Boeing 777-200 Series, 777-200LR Series, 777-300ER Series and 1 more. Effective Oct 17, 2024
- [AD 2024-15-03](https://openairdocs.org/ad/2024-15-03) (historical): Equipment/Furnishings · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Oct 15, 2024
- [AD 2022-18-11](https://openairdocs.org/ad/2022-18-11) (historical): Wings · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Oct 31, 2022
- [AD 2022-15-06](https://openairdocs.org/ad/2022-15-06) (historical): Flight controls · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Aug 18, 2022
- [AD 2022-03-05](https://openairdocs.org/ad/2022-03-05) (historical): Navigation · Boeing 747-8F Series, 747-8 Series, 777-200 Series and 4 more. Effective Jan 27, 2022
- [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 2019-16-05](https://openairdocs.org/ad/2019-16-05) (historical): Equipment/ Furnishings · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Oct 8, 2019
- [AD 2019-01-08](https://openairdocs.org/ad/2019-01-08) (historical): Equipment/furnishings · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 1 more. Effective Mar 22, 2019
- [AD 2018-14-02](https://openairdocs.org/ad/2018-14-02) (historical): Equipment/furnishings · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 1 more. Effective Aug 13, 2018
- [AD 2017-16-10](https://openairdocs.org/ad/2017-16-10) (historical): Fuselage and Wings · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Sep 25, 2017
- [AD 2017-15-01](https://openairdocs.org/ad/2017-15-01) (historical): Auto flight · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Aug 25, 2017
- [AD 2016-18-02](https://openairdocs.org/ad/2016-18-02) (historical): Oxygen · Boeing 777-200 Series and 777-300ER Series. Effective Sep 15, 2016
- [AD 2015-12-03](https://openairdocs.org/ad/2015-12-03) (historical): Flight Controls · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 1 more. Effective Jul 21, 2015
- [AD 2014-20-11](https://openairdocs.org/ad/2014-20-11) (historical): Equipment/Furnishings · Airbus A330-201, A330-202, A330-203 and 42 more. Effective Oct 22, 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 2012-26-15](https://openairdocs.org/ad/2012-26-15) (historical): Navigation · Agusta AW139, A318-111, A318-112 and 71 more. Effective Jan 24, 2013
- [AD 2012-07-06](https://openairdocs.org/ad/2012-07-06) (historical): Flight Controls, Fuel, Landing Gear, Doors, Fuselage, Nacelles/Pylons, Stabilizers, Wings · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective May 15, 2012
- [AD 2011-26-03](https://openairdocs.org/ad/2011-26-03) (historical): Wings · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 1 more. Effective Jan 3, 2012
- [AD 2011-07-05](https://openairdocs.org/ad/2011-07-05) (historical): Equipment/Furnishings · Airbus A330-201, A330-202, A330-203 and 51 more. Effective May 6, 2011
- [AD 2010-24-12](https://openairdocs.org/ad/2010-24-12) (historical): Wings · Boeing 777-200 Series, 777-300 Series and 777-300ER Series. Effective Jan 20, 2011
- [AD 2009-24-08](https://openairdocs.org/ad/2009-24-08) (historical): Fuselage · Boeing 777-200 Series, 777-200LR Series, 777-300 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 2007-26-05](https://openairdocs.org/ad/2007-26-05) (historical): Detect and correct a cracked actuator fitting · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 1 more. Effective Jan 22, 2008
- [AD 2007-17-12](https://openairdocs.org/ad/2007-17-12) (historical): Drive mechanism of the horizontal stabilizer · Boeing 777-200 Series, 777-200LR, 777-300 Series and 1 more. Effective Oct 2, 2007
- [AD 2007-13-05](https://openairdocs.org/ad/2007-13-05) (historical): Right and left elevators · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 1 more. Effective Jul 25, 2007
- [AD 2007-07-05](https://openairdocs.org/ad/2007-07-05) (historical): Left and right air supply and cabin pressure controllers (ASCPCs) · Boeing 777-200 Series, 777-200LR, 777-300 Series and 1 more. Effective Apr 18, 2007
- [AD 2000-19-08](https://openairdocs.org/ad/2000-19-08) (historical): Outboard Leading Edge Slats · Boeing 777-200 Series, 777-200LR Series, 777-300 Series and 2 more. Effective Oct 10, 2000
- [AD 2021-15-05](https://openairdocs.org/ad/2021-15-05) (historical): Engine Controls · General Electric GE90-110B1 and GE90-115B. Effective Sep 13, 2021
- [AD 2020-20-17](https://openairdocs.org/ad/2020-20-17) (historical): Engine Controls · General Electric GE90-110B1 and GE90-115B. Effective Oct 23, 2020
- [AD 2017-07-04](https://openairdocs.org/ad/2017-07-04) (historical): Compressor Section · General Electric GE90-110B1 and GE90-115B. Effective Apr 21, 2017
- [AD 2013-24-17](https://openairdocs.org/ad/2013-24-17) (historical): High pressure compressor (HPC) rotor stage 2-5 spools · General Electric GE90-110B1 and GE90-115B. Effective Dec 31, 2013
- [AD 2013-14-51](https://openairdocs.org/ad/2013-14-51) (historical): Failure of a transfer gearbox assembly radial gearshaft · General Electric GE90-110B1 and GE90-115B
- [AD 2013-10-52](https://openairdocs.org/ad/2013-10-52) (historical): Transfer gearbox assemblies (TGBs) · General Electric GE90-110B1 and GE90-115B. Effective Jun 26, 2013

All 169: https://openairdocs.org/aircraft/N2251U/ads.md

## Information bulletins (advisory) (10 in force)

- [SAIB AIR-22-09R1](https://openairdocs.org/saib/AIR-22-09R1): AUTOPILOT FLIGHT DIRECTOR SYSTEM: ALT HOLD Engaged on Takeoff on Boeing Model 777/787 common fleets.. Issued May 17, 2022
- [SAIB AIR-20-19](https://openairdocs.org/saib/AIR-20-19): Flight Management Computing Software System. Issued Nov 16, 2020
- [SAIB NM-20-11](https://openairdocs.org/saib/NM-20-11): Autopilot System. Issued Jun 11, 2020
- [SAIB NM-20-07](https://openairdocs.org/saib/NM-20-07): Navigation - Glideslope System. Issued Apr 16, 2020
- [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-17-15](https://openairdocs.org/saib/NM-17-15): Equipment/Furnishings - Inflatable Airbag Assembly. Issued Jun 6, 2017
- [SAIB NM-17-10](https://openairdocs.org/saib/NM-17-10): Maintenance Practices. Issued Apr 13, 2017
- [SAIB NM-15-03](https://openairdocs.org/saib/NM-15-03): Flight Controls. Issued Nov 24, 2014
- [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-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 AIR-22-09](https://openairdocs.org/saib/AIR-22-09) (historical): AUTOPILOT FLIGHT DIRECTOR SYSTEM: ALT HOLD Engaged on Takeoff on Boeing Model 777/787 common fleets.. Issued Apr 12, 2022

## NTSB investigations

None matched to N2251U.

## FAA accident and incident reports

None matched to N2251U.

## Service difficulty reports (17)

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 CALA2026090919323](https://openairdocs.org/sdr/CALA2026090919323), Sep 8, 2026: DUCT. DAMAGED. ROW 20ABC WAS PRODUCING VERY HOT AIR FROM LOWER SIDEWALL PANEL. HAD TO MOVE PASSENGERS FROM THE AREA DUE TO HEAT. PILOTS AND F/A'S BOTH REPORTED NO ODOR OR FUME
- [SDR CALA2026051116144](https://openairdocs.org/sdr/CALA2026051116144), May 8, 2026: SWITCH. MALFUNCTIONED. EMERGENCY LIGHTS CAME ON IN CRUISE. MOVED SWITCH TO OFF AND THEY STAYED ON. MOVED SWITCH TO ON AND THEN BACK TO ARMED AND LIGHTS WENT OUT. PERFORMED FIM PROCEDU
- [SDR CALA2025100809781](https://openairdocs.org/sdr/CALA2025100809781), Oct 7, 2025: PIN. INSTALLED. REF ETASK CARD 23-5212-1-2001. INSTALLED 2 EA. L2 PED SLIDE SAFETY PINS. RMV'D & STOWED 2 EA. SAFTEY PINS FOR PED L2 REF ETASK CARD 23-5212-1-2001. INSPECTED VE
- [SDR CALA2025091008722](https://openairdocs.org/sdr/CALA2025091008722), Sep 8, 2025: WARNING MESSAGE. FALSE ACTIVATION. CABIN CONTROL PANELS 1L 2L 3L SHOW SMOKE DET MESSAGE NO SMOKE PRESENT IAW FIM 26-14 TASK 811. RESET CSCP MESSAGE CLEARED. NO EVIDENCE OF SMOKE OR ODOR THROUGHOU
- [SDR CALA2025050604491](https://openairdocs.org/sdr/CALA2025050604491), May 6, 2025: BATTERY PACK. EXPIRED. EMER FLASH LT 15 EA SERVICE LIFE DATE LESS THAN 135 DAYS THE FLASH LT BATTERY AT FLIGHT DECK CA SIDE, DR 1L AFT, DR 1R, DR 2R FWD&AFT, DR 2L FWD&AFT, DR 3R, DR 
- [SDR CALA2025032603207](https://openairdocs.org/sdr/CALA2025032603207), Mar 24, 2025: SMOKE DETECTOR. FALSE ACTIVATION. SMOKE DETECTED & INDICATION FAULT MESSAGE SHOWS ZONE B SMOKE DETECTED SHOWS ON ALL FA DISPLAY PANEL NO FAIL INDICATED IN CPT PEFORMED FIM TASK 811 AND EXAMINED 
- [SDR CALA2024120501408](https://openairdocs.org/sdr/CALA2024120501408), Dec 3, 2024: SMOKE DETECTOR. ODOR. SMOKE DETECTED LIGHTS ON AT DOOR 1R AND 2R WITHOU T TONES SMELLS OR EICAS PERFORMED ALL TEST, NO FAULTS NOTED. TESTED SMOKE DETECTORS LAVS AT DOOR 2L AND 2R ALL
- [SDR CALA2024111401140](https://openairdocs.org/sdr/CALA2024111401140), Nov 12, 2024: CONTROL PANEL. FAILED. DOOR 1L FA CONTROL HAD A CHEM SMELL AND THEN FAILED SMOKING ORDER QUESTIONNAIRE REPORT DOOR 1L CABIN ATTENDANT PANEL INOP. DISCONNECTED CONNECTORS AMD SECURED P
- [SDR CALA2024100900800](https://openairdocs.org/sdr/CALA2024100900800), Oct 6, 2024: WARNING MESSAGE. FALSE ACTIVATION. INTERMITTENT DOOR WING SLIDE LK L STATUS MSG FOUND MAINT MESSAGES 52-22360 AND 52-21920 NOT ACTIVE. PER FIM 52-11 TASK 836 AND 52-11 TASK 837 FAULT NOT ACTIVE R
- [SDR CALA2024100300743](https://openairdocs.org/sdr/CALA2024100300743), Sep 30, 2024: IDG. FAULTED. OIL QTY DROPPED TO 1 ENROUTE FOUND OIL LEAK FROMRH BUG CASE DRAIN AND RH BUG AGB PAD DRAIN LINE. REPLACED RH BUG AND ACCESAAORY GEARBOX SEALOL FACE SEAL AND PER
- [SDR CALA2024092600694](https://openairdocs.org/sdr/CALA2024092600694), Sep 22, 2024: RELAY. FAULTY. DURING XFER GPU POWER TO APU POWER FOUND SEVERAL MSG MAIN BAT CH ARGER AND MAIN BAT CHARGER. XFER POWER TO GPU AND FOUND ALL MSGG ONE. SUSPECT SIU AT FAULT. WIL
- [SDR CALA2024092500689](https://openairdocs.org/sdr/CALA2024092500689), Sep 22, 2024: IDG. FAULTY. ELEC GEN OFF R EICAS ADVISORY RIGHT GENERATOR CONTROL BREAKER (GCB) OPEN OR GENERATOR CONTROL SWITCH OFF, AND ENGINE NOT SHUT DOWN. FIM TASK REF : FIM TASK REFE
- [SDR CALA2024091602435](https://openairdocs.org/sdr/CALA2024091602435), Sep 14, 2024: BATTERY. NO TEST. R4 DOOR EMER LT BATTERY PACK M33401 CAPACITY CHK FAILED. R4 DOOR EMER LT BATTERY PACK M33401 REPLACED AND INSTALLATION TEST C/O NORMAL IAW AMM33-51-06.
- [SDR CALA2024091602434](https://openairdocs.org/sdr/CALA2024091602434), Sep 14, 2024: BATTERY. NO TEST. L4 DR EMER LT BATTERY PACK M33400 CAPACITY CHECK FAIL TRANSFER REFER NON-ROUTINE. L4 DOOR EMER LT BATTERY PACK M33400 REPLACED AND INSTALLATION TEST CARRIED OUT
- [SDR CALA2024040800999](https://openairdocs.org/sdr/CALA2024040800999), Mar 24, 2024: SENSOR. INOPERATIVE. LEFT HAND IDG LEVEL , QUANITY, BLANK ON MAINTENANCE PAGE SERVICED IDG, FOUND MFD DISPLAY BLANK. MUST REPAIR THE INDICATION PROBLEM WITHIN 250 FLIGHT HOURS. AMM 
- [SDR CALA2022052301327](https://openairdocs.org/sdr/CALA2022052301327), May 23, 2022: CIRCUIT BREAKER. INOPERATIVE. CSCP/CACP & QUOT;SMOKE DETECTED & QUOT; INDICATION FAULT MESSAGE SH OWS G5 GALLEY HALF CARRIER BOX 503F SMOKE DETECTED MSG ON FLIGHT ATTENDANT DISPLAY PANEL CSC
- [SDR CALA2021122702446](https://openairdocs.org/sdr/CALA2021122702446), Dec 27, 2021: SMOKE DETECTOR. ACTIVATED. CREW REPORTED TO HMC: LAV 2R SMOKE ALARM ACTIVATED DURING FLIGHT; FLIGHT ATTENDANT FOUND CUSTOMER FROM SEAT 8L ATTEMPTING TO EXTINGUISH SMOKING CELL PHONE IN TH

## STCs that may be installed (OpenAirDocs) (312, 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 777-300ER)

- [STC ST03438NY](https://openairdocs.org/stc/ST03438NY): Installation of Adams Rite Lavatory Equipment. Delta Engineering Corporation
- [STC ST12468SE](https://openairdocs.org/stc/ST12468SE): Removal of In-Flight Entertainment and Communications System. Space Exploration Technologies Corp./Starlink Aviation
- [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 ST12456IB](https://openairdocs.org/stc/ST12456IB): Thinkom Satcom Antenna Installation. EAD Aerospace Airworthiness T/A Eclipse Technics
- [STC ST11270DS](https://openairdocs.org/stc/ST11270DS): Modification of the passenger cabin of the Boeing 777-323ER aircraft to install new business class seats, new premium economy seats, new economy seats, new class dividers, new and modified closets, new and modified galleys, new and modified lavatories, and new entertainment and connectivity systems. (777-323ER). American Airlines, Inc. Maintenance and Engineering (M&E) Division
- [STC ST04738NY](https://openairdocs.org/stc/ST04738NY): Installation of Dual SpaceX Starlink Aero Terminals. Space Exploration Technologies Corp./Starlink Aviation
- [STC ST04739NY](https://openairdocs.org/stc/ST04739NY): Installation of Dual SpaceX Starlink Aviation System. Space Exploration Technologies Corp./Starlink Aviation
- [STC ST11835AT](https://openairdocs.org/stc/ST11835AT): Removal of floating panel from cabin interior partition and installation of vases and magazine racks. B/E Aerospace, Inc. - Aftermarket Services
- [STC ST04474NY](https://openairdocs.org/stc/ST04474NY): Activation of Wireless Local Area Network (WLAN) system. Jet Aviation AG
- [STC ST02256SE](https://openairdocs.org/stc/ST02256SE): Installation of an interior reconfiguration. B/E Aerospace, Inc. - FSI
- [STC ST02308SE](https://openairdocs.org/stc/ST02308SE): First class furniture trim and finish change. B/E Aerospace, Inc. - FSI
- [STC ST00750DE](https://openairdocs.org/stc/ST00750DE): Installation of an International Communications Group (ICG) Iridium Communication (SATCOM) system. L2 Aviation
- [STC ST00197IB](https://openairdocs.org/stc/ST00197IB): Installation of the Universal Quick Access Recorder (uQAR). Flight Data Technologies Inc
- [STC ST02073SE](https://openairdocs.org/stc/ST02073SE): Fabrication of a LiteAir window plug assembly. LiteAir Aviation Products Inc
- [STC ST03928AT-D](https://openairdocs.org/stc/ST03928AT-D): Installation of an Audio Video On-Demand (AVOD) In-Flight Entertainment System and In-Seat Power System (ISPS) installation. AIRCRAFT RECONFIG TECHNOLOGIES, LLC. Lists 777-300 Series
- [STC ST04223AT](https://openairdocs.org/stc/ST04223AT): Interior reconfiguration installation. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST04236AT](https://openairdocs.org/stc/ST04236AT): Interior reconfiguration installation. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST04237AT](https://openairdocs.org/stc/ST04237AT): Installation of a Panasonic eX3 Audio Video On-Demand (AVOD) In-Flight Entertainment System. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST04256AT](https://openairdocs.org/stc/ST04256AT): Interior reconfiguration installation. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST04257AT](https://openairdocs.org/stc/ST04257AT): Interior reconfiguration installation. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST04258AT](https://openairdocs.org/stc/ST04258AT): Panasonic IFE System Reconfiguration. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST04385AT](https://openairdocs.org/stc/ST04385AT): 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 ST02814LA](https://openairdocs.org/stc/ST02814LA): Installation of Lower Deck Civil Reserve Air Fleet (CRAF) Cargo System. Telair International
- [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 ST12322AC](https://openairdocs.org/stc/ST12322AC): Installation of a Thales Aviator 200S satellite communication system. L2 Aviation
- [STC ST03875NY](https://openairdocs.org/stc/ST03875NY): Installation of interior placards, signs and markings. Libellule Monde Inc
- [STC ST02905NY](https://openairdocs.org/stc/ST02905NY): Installation of a Panasonic Avionics Corporation Global Communications Suite Antenna. Delta Engineering Corporation
- [STC ST03010CH](https://openairdocs.org/stc/ST03010CH): Installation of an advertisement container on the bottom of a seat back tray table. Atin OOH LLC
- [STC ST02928NY](https://openairdocs.org/stc/ST02928NY): Installation of a Panasonic Avionics Corporation Global Communications Suite (GCS). Delta Engineering Corporation
- [STC ST00892LA](https://openairdocs.org/stc/ST00892LA): Installation of Emergency Vision Assurance System (EVAS). VisionSafe LLC
- [STC ST00030IB](https://openairdocs.org/stc/ST00030IB): Installation of Test Tech ELT. APTOZ EHF
- [STC ST04756NY](https://openairdocs.org/stc/ST04756NY): Installation of Dual Cockpit USB Charger. Eirtech Aviation Services Inc
- [STC ST03885AT](https://openairdocs.org/stc/ST03885AT): Installation of an Avionica, Inc. avCM Cellular Module. Aircraft Systems and Manufacturing Inc
- [STC ST02749SE](https://openairdocs.org/stc/ST02749SE): Interior reconfiguration. B/E Aerospace, Inc. - FSI
- [STC ST03178NY](https://openairdocs.org/stc/ST03178NY): Installation of a Panasonic In-Flight Entertainment System. Delta Engineering Corporation
- [STC ST02707SE](https://openairdocs.org/stc/ST02707SE): Cargo Loading System Installation. B/E Aerospace Inc.-FSI
- [STC ST12139IB](https://openairdocs.org/stc/ST12139IB): Conversion of the Boeing 777-300ER Passenger Aircraft into a Special Freighter configuration named 777-300ERSF. Israel Aerospace Industries LTD
- [STC ST11387DS](https://openairdocs.org/stc/ST11387DS): Installation of an Avionica, avWiFi System with Cybersecurity Compliance and Hosted Applications Functionality. Archeion Holdings L.L.C
- [STC ST02386LA](https://openairdocs.org/stc/ST02386LA): Bar Unit Waste Container Modifications. Safran Cabin Inc
- [STC ST04566AT](https://openairdocs.org/stc/ST04566AT): Replacement of the AY01-BEA-TSPCU-LRU-01 Touch Screen Power Control Unit (TSPCU) with the AV2232 to control the premium cabin seats position. B/E Aerospace, Inc Aftermarket Services (B/E-AS)
- [STC ST12056IB](https://openairdocs.org/stc/ST12056IB): The Manufacture and Installation of External Printed Aircraft Graphics Film. Libellule Monde Inc
- [STC ST11037SC](https://openairdocs.org/stc/ST11037SC): Satellite communication system upgrade. L2 Aviation
- [STC ST02472AT](https://openairdocs.org/stc/ST02472AT): Installation of a mini Quick Access Recorder (QAR) model MKI, MKII, or MKIII. Aircraft Systems and Manufacturing Inc
- [STC ST02802SE](https://openairdocs.org/stc/ST02802SE): M1 Galley and Celing modification. Jamco America Inc
- [STC ST02668CH](https://openairdocs.org/stc/ST02668CH): Installation of Rosemount Aerospace Electronic Flight Bag (EFB) Systems. Rosemount Aerospace Inc
- [STC ST02311CH](https://openairdocs.org/stc/ST02311CH): Upgrade of existing Mode S transponder installation to enhanced surveillance Mode S. Amphenol Cable and Interconnect Technologies Inc
- [STC ST02835CH](https://openairdocs.org/stc/ST02835CH): Installation of mounting brackets as provisions for future mechanical installation of Electronic Flight Bag Display Units (DUs) and Remote Processing Units (RPUs). Amphenol Cable and Interconnect Technologies Inc
- [STC ST02943AT](https://openairdocs.org/stc/ST02943AT): Installation of a Connexion by Boeing Next Generation Antenna and Satellite Data System. Amphenol Cable and Interconnect Technologies Inc. Lists 777-300 Series

All 312: https://openairdocs.org/aircraft/N2251U/stcs.md

## Earlier aircraft with N2251U

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N2251U before.

- [Cancelled 1989-06-19](https://openairdocs.org/deregistered/N2251U-1989-06-19): Brantly B-2B, S/N 410. Triennial form not returned. Owner: [Thompson Wayne L](https://openairdocs.org/faa-owner/THOMPSON%20WAYNE%20L), [Buchanan, VA](https://openairdocs.org/faa-place/VA/Buchanan)

## Related

- Other Boeing 777-300ER aircraft: https://openairdocs.org/model/boeing-777-300er/aircraft.md
- The GE GE90-115B engine: https://openairdocs.org/engine/ge-ge90-115b.md

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