# N503UA: 1989 Boeing 757-222

- Status: Valid registration
- Airframe: [Boeing 757-222](https://openairdocs.org/model/boeing-757-222) (registry code 1384956, 178 seats)
- Engine: [Pratt & Whitney PW2040](https://openairdocs.org/engine/pratt-whitney-pw2040) (registry code 52121)
- Data sheets: [TCDS A2NM](https://openairdocs.org/tcds/A2NM) (The Boeing Company), [TCDS E17NE](https://openairdocs.org/tcds/E17NE) (Pratt & Whitney) (OpenAirDocs)
- Serial number: 24624
- Year built: 1989
- Type: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: September 20, 1989
- Certificate issued: April 1, 2013
- Expires: April 30, 2029
- Mode S code: A646D8
- 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=503UA
- Page: https://openairdocs.org/aircraft/N503UA

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): 331 in force

### Matched by airframe (Boeing 757-222)

- [AD 2026-13-16](https://openairdocs.org/ad/2026-13-16): Navigation · Boeing 757-200 Series, 757-200PF Series, 757-200CB Series and 6 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 2026-08-09](https://openairdocs.org/ad/2026-08-09): Wings · Boeing 757-200 Series and 757-300 Series with STC ST01518SE. Effective Jun 3, 2026
- [AD 2026-04-06](https://openairdocs.org/ad/2026-04-06): Wings · Boeing 757-200 Series and 757-300 Series. Effective Feb 26, 2026
- [AD 2026-01-05](https://openairdocs.org/ad/2026-01-05): Wings · Boeing 757-200 Series and 757-300 Series. Effective Feb 20, 2026
- [AD 2025-23-03](https://openairdocs.org/ad/2025-23-03): Fire protection · Boeing 757-200 Series, 757-200PF Series, 757-200CB Series and 1 more. Effective Jan 13, 2026
- [AD 2025-20-14](https://openairdocs.org/ad/2025-20-14): Equipment/furnishings · Boeing 757-200 Series. Effective Jan 2, 2026
- [AD 2025-20-04](https://openairdocs.org/ad/2025-20-04): Flight controls · Boeing 757-200 Series, 757-200CB Series, 757-200PF Series and 1 more. Effective Nov 6, 2025
- [AD 2025-19-11](https://openairdocs.org/ad/2025-19-11): Landing Gear · Boeing 757-200 Series, 757-200PF Series and 757-200CB Series. Effective Nov 6, 2025
- [AD 2025-11-01](https://openairdocs.org/ad/2025-11-01): Fuselage · Boeing 757-200 Series, 757-200CB Series and 757-300 Series. Effective Jul 8, 2025
- [AD 2025-02-13](https://openairdocs.org/ad/2025-02-13): Fuselage · Boeing 757-200 Series, 757-200CB Series and 757-200PF Series. Effective Mar 17, 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 2024-25-09](https://openairdocs.org/ad/2024-25-09): Hydraulic power · Boeing 757-200 Series, 757-200PF Series, 757-200CB Series and 1 more. Effective Feb 14, 2025
- [AD 2024-24-01](https://openairdocs.org/ad/2024-24-01): Fuselage · Boeing 757-200 Series, 757-200CB Series and 757-200PF Series. Effective Jan 13, 2025
- [AD 2024-12-09](https://openairdocs.org/ad/2024-12-09): Wings · Boeing 757-200 Series, 757-200CB Series, 757-200PF Series and 1 more. Effective Aug 22, 2024
- [AD 2024-10-07](https://openairdocs.org/ad/2024-10-07): Fuselage · Boeing 757-200 Series, 757-200PF Series, 757-200CB Series and 1 more. Effective Jul 19, 2024
- [AD 2024-10-05](https://openairdocs.org/ad/2024-10-05): Equipment/Furnishings · Boeing 757-200 Series, 757-200CB Series, 757-200PF Series and 1 more. Effective Jul 19, 2024
- [AD 2024-12-07](https://openairdocs.org/ad/2024-12-07): Fuselage · Boeing 757-200 Series with STC ST01529SE or ST02278SE. Effective Jul 11, 2024
- [AD 2024-07-05](https://openairdocs.org/ad/2024-07-05): Fuselage · Boeing 757-200 Series, 757-200CB Series and 757-300 Series. Effective Jun 5, 2024
- [AD 2024-05-09](https://openairdocs.org/ad/2024-05-09): Fuselage · Boeing 757-200 Series, 757-200CB Series and 757-300 Series. Effective May 8, 2024
- [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 2023-12-12](https://openairdocs.org/ad/2023-12-12): Navigation · Boeing 757-200 Series, 757-200PF Series, 757-200CB Series and 6 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 2022-20-15](https://openairdocs.org/ad/2022-20-15): Wings · Boeing 757-200 Series, 757-200PF Series, 757-200CB Series and 1 more. Effective Dec 7, 2022
- [AD 2022-15-09](https://openairdocs.org/ad/2022-15-09): Fuselage · Boeing 757-200 Series, 757-200CB Series and 757-300 Series. Effective Aug 17, 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 2022-13-04](https://openairdocs.org/ad/2022-13-04): Fuselage · Boeing 757-200 Series, 757-200PF Series, 757-200CB Series and 1 more. Effective Aug 12, 2022
- [AD 2022-07-07](https://openairdocs.org/ad/2022-07-07): Equipment/furnishings · Boeing 757-200 Series, 757-200CB Series and 757-300 Series. Effective May 26, 2022
- [AD 2021-26-28](https://openairdocs.org/ad/2021-26-28): Fuel · Boeing 757-200 Series, 757-200PF Series, 757-200CB Series and 1 more. Effective Mar 3, 2022
- [AD 2021-22-23](https://openairdocs.org/ad/2021-22-23): Wings · Boeing 757-200 Series, 757-200PF Series, 757-200CB Series and 1 more. Effective Dec 29, 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 2021-05-11](https://openairdocs.org/ad/2021-05-11): Flight controls · Boeing 757-200 Series, 757-200CB Series, 757-200PF Series and 1 more. Effective Apr 19, 2021
- [AD 2020-20-10](https://openairdocs.org/ad/2020-20-10): Fuselage · Boeing 757-200 Series, 757-200CB Series and 757-300 Series. Effective Nov 10, 2020
- [AD 2020-04-15](https://openairdocs.org/ad/2020-04-15): Air conditioning · Boeing 757-200 Series, 757-200CB Series, 757-200PF Series and 4 more. Effective May 8, 2020
- [AD 2020-05-25](https://openairdocs.org/ad/2020-05-25): Fuselage · Boeing 757-200 Series, 757-200CB Series, 757-200PF Series and 1 more. Effective May 4, 2020
- [AD 2020-01-18](https://openairdocs.org/ad/2020-01-18): Fuel, Fuselage, Wings · Winglets, wing structural reinforcement (Aviation Partners Boeing STC ST01518SE). Effective Mar 5, 2020
- [AD 2019-24-18](https://openairdocs.org/ad/2019-24-18): Navigation · Boeing 727-100 Series, 727-100C Series, 727-200 Series and 11 more. Effective Feb 3, 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 2019-07-04](https://openairdocs.org/ad/2019-07-04): Editorial Note: Rule document 2019-07587 was originally published on pages 15949 through 15952 in the issue of Wednesday, April 17, 2019. In that publication, on page 15951, in the title of  
 the Airworthiness Directive, ''-04'' was inadvertently left out. The corrected document is republished in its entirety. · Boeing 757-200 Series, 757-200CB Series, 757-200PF Series and 1 more. Effective May 22, 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 2018-20-13](https://openairdocs.org/ad/2018-20-13): Fuel · Boeing 757-200 Series, 757-200CB Series, 757-200PF Series and 13 more. Effective Nov 15, 2018
- [AD 2018-19-23](https://openairdocs.org/ad/2018-19-23): Doors · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 15 more. Effective Nov 7, 2018
- [AD 2018-18-07](https://openairdocs.org/ad/2018-18-07): Fuselage · Boeing 757-200 Series, 757-200CB Series, 757-200PF Series and 1 more. Effective Oct 10, 2018
- [AD 2018-06-08](https://openairdocs.org/ad/2018-06-08): Fuselage · Boeing 757-200 Series. Effective Apr 19, 2018
- [AD 2017-26-07](https://openairdocs.org/ad/2017-26-07): Fuselage · Boeing 757-200 Series, 757-200CB Series and 757-300 Series. Effective Feb 7, 2018
- [AD 2017-26-02](https://openairdocs.org/ad/2017-26-02): Doors · Boeing 757-200 Series. Effective Jan 24, 2018
- [AD 2017-22-12](https://openairdocs.org/ad/2017-22-12): Wings · Boeing 757-200 Series, 757-200CB Series and 757-200PF Series. Effective Dec 26, 2017
- [AD 2017-20-05](https://openairdocs.org/ad/2017-20-05): Fuselage · Boeing 757-200 Series and 757-300 Series. Effective Nov 6, 2017
- [AD 2017-19-10](https://openairdocs.org/ad/2017-19-10): Doors · Boeing 757-200 Series, 757-200CB Series and 757-200PF Series. Effective Oct 27, 2017
- [AD 2017-12-14](https://openairdocs.org/ad/2017-12-14): Fuselage · Boeing 757-200 Series and 757-200PF Series. Effective Jul 25, 2017

### Matched by engine (Pratt & Whitney PW2040)

- [AD 2026-07-06](https://openairdocs.org/ad/2026-07-06): Turbine Section · Pratt & Whitney F117-PW-100, PW2037, PW2037D and 3 more. Effective May 29, 2026
- [AD 2024-12-04](https://openairdocs.org/ad/2024-12-04): Turbine Section · Pratt & Whitney PW2037, PW2037M and PW2040. Effective Aug 13, 2024
- [AD 2021-14-13](https://openairdocs.org/ad/2021-14-13): Turbine Section · Pratt & Whitney F117-PW-100, PW2037, PW2037M and 1 more. Effective Sep 1, 2021
- [AD 2019-05-01](https://openairdocs.org/ad/2019-05-01): Turbine/Turboprop Engine · Pratt & Whitney F117-PW-100, PW2037, PW2037D and 6 more. Effective Apr 16, 2019
- [AD 2018-22-06](https://openairdocs.org/ad/2018-22-06): Fuel Control/Turbine Engines · Pratt & Whitney PW2037, PW2037M and PW2040. Effective Dec 3, 2018
- [AD 2018-14-10](https://openairdocs.org/ad/2018-14-10): Fuel Control Turbine Engines · Pratt & Whitney PW2037, PW2037M and PW2040. Effective Sep 28, 2018
- [AD 2012-02-01](https://openairdocs.org/ad/2012-02-01): Fan blades · Pratt & Whitney Division PW2037, PW2037M and PW2040. Effective Apr 24, 2012
- [AD 2009-14-05](https://openairdocs.org/ad/2009-14-05): High-pressure compressor (HPC) · Pratt & Whitney Division PW2037, PW2037M and PW2040. Effective Jul 23, 2009
- [AD 2009-10-08](https://openairdocs.org/ad/2009-10-08): High-pressure turbine 2nd stage hubs that have previously been exposed to Pratt & Whitney cleaning procedure SPOP 10 or SPOP 9 or equivalent procedure. · Pratt & Whitney Division PW2037, PW2037M and PW2040. Effective Jun 17, 2009
- [AD 2007-02-06](https://openairdocs.org/ad/2007-02-06): High pressure compressor (HPC) drum rotor disk assemblies · Pratt & Whitney Division PW2037, PW2037M and PW2040. Effective Feb 28, 2007
- [AD 2005-18-03](https://openairdocs.org/ad/2005-18-03): Engine manufacturer's time limits section (TLS) · Pratt & Whitney Division PW2037, PW2037D, PW2037M and 5 more. Effective Feb 28, 2006
- [AD 99-20-03](https://openairdocs.org/ad/99-20-03): High Pressure Turbine Disks · Pratt & Whitney Division PW2037, PW2037M, PW2040 and 2 more. Effective Nov 23, 1999
- [AD 96-18-08 R1](https://openairdocs.org/ad/96-18-08-R1): (HPT) High Pressure or (LPT) Low Pressure Turbine · Pratt & Whitney Division PW2037, PW2037M, PW2040 and 2 more. Effective Nov 10, 1998
- [AD 97-11-51 R1](https://openairdocs.org/ad/97-11-51-R1): First Stage High Pressure Turbine (HPT) Disk Assembly · Pratt & Whitney Division PW2037, PW2037M, PW2040 and 5 more. Effective Aug 7, 1997
- [AD 88-03-52](https://openairdocs.org/ad/88-03-52): Fuel Quantity Indication System · Pratt & Whitney Division PW2037 and PW2040. Effective Jul 13, 1988

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

- [AD 2022-08-12](https://openairdocs.org/ad/2022-08-12) (historical): Wings · Boeing 757-200 Series, 757-200PF Series, 757-200CB Series and 1 more. Effective Jun 10, 2022
- [AD 2022-04-05](https://openairdocs.org/ad/2022-04-05) (historical): Navigation · Boeing 757-200 Series, 757-200CB Series, 757-200PF Series and 6 more. Effective Feb 14, 2022
- [AD 2020-21-17](https://openairdocs.org/ad/2020-21-17) (historical): Wings · Boeing 757-200 Series, 757-200CB Series, 757-200PF Series and 1 more. Effective Jan 14, 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 2019-23-06](https://openairdocs.org/ad/2019-23-06) (historical): Fuselage · Boeing 757-200 Series, 757-200CB Series and 757-300 Series. Effective Jan 13, 2020
- [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 2019-12-13](https://openairdocs.org/ad/2019-12-13) (historical): Flight controls · Boeing 757-200 Series, 757-200CB Series, 757-200PF Series and 1 more. Effective Jul 12, 2019
- [AD 2018-26-03](https://openairdocs.org/ad/2018-26-03) (historical): Equipment/furnishings · Boeing 757-200 Series. Effective Jan 31, 2019
- [AD 2018-16-05](https://openairdocs.org/ad/2018-16-05) (historical): Wings · Boeing 757-200 Series, 757-200CB Series, 757-200PF Series and 1 more. Effective Sep 10, 2018
- [AD 2018-06-07](https://openairdocs.org/ad/2018-06-07) (historical): Fuselage · Boeing 757-200 Series, 757-200CB Series and 757-300 Series. Effective May 3, 2018
- [AD 2017-24-10](https://openairdocs.org/ad/2017-24-10) (historical): Fuselage · Boeing 757-200 Series, 757-200PF Series and 757-300 Series. Effective Jan 9, 2018
- [AD 2017-26-10](https://openairdocs.org/ad/2017-26-10) (historical): Flight controls · Boeing 757-200 Series, 757-200CB Series, 757-200PF Series and 1 more. Effective Jan 3, 2018
- [AD 2015-08-01](https://openairdocs.org/ad/2015-08-01) (historical): Flight Controls · Boeing 757-200 Series, 757-200CB Series, 757-200PF Series and 1 more. Effective May 26, 2015
- [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 2013-01-02](https://openairdocs.org/ad/2013-01-02) (historical): Doors · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 12 more. Effective Feb 22, 2013
- [AD 2012-15-15](https://openairdocs.org/ad/2012-15-15) (historical): Fuselage · Boeing 757-200 Series, 757-200CB Series and 757-300 Series. Effective Oct 3, 2012
- [AD 2011-01-15](https://openairdocs.org/ad/2011-01-15) (historical): Fuselage · Boeing 757-200 Series, 757-200CB Series and 757-300 Series. Effective Jan 25, 2011
- [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 2009-22-08](https://openairdocs.org/ad/2009-22-08) (historical): Control switches · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 12 more. Effective Dec 3, 2009
- [AD 2008-23-19](https://openairdocs.org/ad/2008-23-19) (historical): Left and right main fuel tanks · Boeing 757-200 Series, 757-200CB Series, 757-200PF Series and 1 more. Effective Dec 30, 2008
- [AD 2008-13-20](https://openairdocs.org/ad/2008-13-20) (historical): Aft hinge fittings · Boeing 757-200 Series, 757-200CB Series, 757-200PF Series and 1 more. Effective Aug 6, 2008
- [AD 2008-10-11](https://openairdocs.org/ad/2008-10-11) (historical): Fuel tank systems · Boeing 757-200 Series, 757-200CB Series, 757-200PF Series and 1 more. Effective Jun 12, 2008
- [AD 2008-09-07](https://openairdocs.org/ad/2008-09-07) (historical): Fuel filter · Boeing 757-200 Series, 757-200CB Series, 757-200PF Series and 4 more. Effective May 8, 2008
- [AD 2008-05-10](https://openairdocs.org/ad/2008-05-10) (historical): Vertical flange and bulkhead · Boeing 757-200 Series, 757-200CB Series, 757-200PF Series and 9 more. Effective Mar 18, 2008
- [AD 2007-16-13](https://openairdocs.org/ad/2007-16-13) (historical): Shim installation · Boeing 757-200 Series, 757-200CB Series and 757-200PF Series. Effective Aug 24, 2007
- [AD 2007-03-01](https://openairdocs.org/ad/2007-03-01) (historical): Power feeder wire bundles · Boeing 757-200 Series, 757-200CB Series, 757-200PF Series and 1 more. Effective Mar 5, 2007
- [AD 2006-20-11](https://openairdocs.org/ad/2006-20-11) (historical): Rivet inspection · Boeing 757-200 Series, 757-200CB Series and 757-200PF Series. Effective Nov 8, 2006
- [AD 2006-11-11](https://openairdocs.org/ad/2006-11-11) (historical): Fatigue cracking of PSEs · Boeing 757-200 Series, 757-200CB Series, 757-200PF Series and 1 more. Effective Jun 30, 2006
- [AD 2005-18-18](https://openairdocs.org/ad/2005-18-18) (historical): Left and right engine-to-wing aft fairings · Boeing 757-200 Series, 757-200CB Series, 757-200PF Series and 1 more. Effective Oct 14, 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 2005-12-04](https://openairdocs.org/ad/2005-12-04) (historical): Aft torque bulkhead · Boeing 757-200 Series, 757-200CB Series and 757-200PF Series. Effective Jun 29, 2005
- [AD 2005-04-14](https://openairdocs.org/ad/2005-04-14) (historical): Joint of the mid-bulkhead and the upper link fittings · Boeing 757-200 Series, 757-200CB Series and 757-200PF Series. Effective Mar 15, 2005
- [AD 2004-12-07](https://openairdocs.org/ad/2004-12-07) (historical): Nacelle strut and wing structure · Boeing 757-200 Series, 757-200CB Series, 757-200PF Series and 1 more. Effective Jul 21, 2004
- [AD 2004-09-32](https://openairdocs.org/ad/2004-09-32) (historical): Fuselage skin · Boeing 757-200 Series. Effective May 24, 2004
- [AD 2003-18-05](https://openairdocs.org/ad/2003-18-05) (historical): Nacelle Strut and Wing Structure · Boeing 757-200 Series, 757-200CB Series, 757-200PF Series and 1 more. Effective Oct 16, 2003
- [AD 94-01-10 R1](https://openairdocs.org/ad/94-01-10-R1) (historical): Engine thrust reverser system · Boeing 757-200 Series and 757-200PF Series. Effective Sep 18, 2003
- [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 2003-07-08](https://openairdocs.org/ad/2003-07-08) (historical): Upper link fittings · Boeing 757-200 Series, 757-200CB Series and 757-200PF Series. Effective Apr 18, 2003
- [AD 2001-24-02](https://openairdocs.org/ad/2001-24-02) (historical): Shoulder Restraint Harness Attachment · Boeing 707-100 Long Body, 707-100B Long Body, 707-300 Series (all) and 20 more. Effective Jan 4, 2002
- [AD 99-27-06](https://openairdocs.org/ad/99-27-06) (historical): Thrust Reverser Cable · Boeing 757-200 Series, 757-200CB Series and 757-200PF Series. Effective Feb 7, 2000
- [AD 99-18-16](https://openairdocs.org/ad/99-18-16) (historical): Modular Avionics Warning Electronic Assembly or Warning Electronics Unit · Boeing 747-400 Series, 747-400D Series, 747-400F Series and 6 more. Effective Sep 16, 1999
- [AD 99-09-13](https://openairdocs.org/ad/99-09-13) (historical): Forward Lavatory · Boeing 757-200 Series, 757-200CB Series and 757-200PF Series. Effective Jun 1, 1999
- [AD 97-06-04](https://openairdocs.org/ad/97-06-04) (historical): Lower Spar Chord · Boeing 757-200 Series, 757-200CB Series and 757-200PF Series. Effective Mar 28, 1997
- [AD 74-08-09 R2](https://openairdocs.org/ad/74-08-09-R2) (historical): Waste Receptacles · Aero Spacelines 377, 377MG, 377SGT and 268 more. Effective Jul 29, 1996
- [AD 2017-12-03](https://openairdocs.org/ad/2017-12-03) (historical): Fuel Control Turbine Engines · Pratt & Whitney PW2037, PW2037M and PW2040. Effective Jul 20, 2017
- [AD 2017-11-06](https://openairdocs.org/ad/2017-11-06) (historical): Turbine/ Turboprop Engine · Pratt & Whitney F117-PW-100, PW2037, PW2037D and 6 more. Effective Jul 18, 2017
- [AD 2014-05-32](https://openairdocs.org/ad/2014-05-32) (historical): Diffuser-to-high-pressure turbine (HPT) case flange · Pratt & Whitney F117-PW-100, PW2037, PW2037D and 8 more. Effective May 5, 2014
- [AD 2002-12-06](https://openairdocs.org/ad/2002-12-06) (historical): Time Limits Section (TLS) · Pratt & Whitney Division PW2037, PW2037M, PW2040 and 5 more. Effective Jul 17, 2002
- [AD 2000-21-09](https://openairdocs.org/ad/2000-21-09) (historical): Critical Life-limited Parts · Pratt & Whitney Division PW2037, PW2037M, PW2040 and 5 more. Effective Jan 22, 2001
- [AD 99-08-14](https://openairdocs.org/ad/99-08-14) (historical): Maintenance Program, Mandatory Inspections · Pratt & Whitney Division PW2037, PW2037M, PW2040 and 5 more. Effective May 13, 1999

All 381: https://openairdocs.org/aircraft/N503UA/ads.md

## Information bulletins (advisory) (13 in force)

- [SAIB 2026-09](https://openairdocs.org/saib/2026-09): HYDRAULIC POWER, Hydraulic Power Transfer Unit System. Issued Apr 6, 2026
- [SAIB 2025-02](https://openairdocs.org/saib/2025-02): DOORS, Main Deck Cargo Door. Issued Feb 21, 2025
- [SAIB 2025-01](https://openairdocs.org/saib/2025-01): HYDRAULIC POWER SYSTEM, Fatigue Failure of Hydraulic Flexible Hoses. Issued Jan 14, 2025
- [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-18-33](https://openairdocs.org/saib/NM-18-33): Engine Fuel and Control. Issued Dec 17, 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-15-03](https://openairdocs.org/saib/NM-15-03): Flight Controls. Issued Nov 24, 2014
- [SAIB NM-10-24](https://openairdocs.org/saib/NM-10-24): Hydraulic Motors: Hydraulic Motor Generator (HMG) Inadvertent Lock-out. Issued Mar 31, 2010
- [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-07-14](https://openairdocs.org/saib/NM-07-14): M10444 APU/Cargo Fire Control Panel (APU/CFCP). Issued Jan 3, 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

## NTSB investigations (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB FTW96LA157](https://openairdocs.org/ntsb/FTW96LA157), Mar 23, 1996: Boeing B-757-222 (N503UA), Taos, NM, no damage. Probable cause: an encounter with unforecasted clear air turbulence.

## FAA accident and incident reports (2)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 19960323007359A](https://openairdocs.org/incident/19960323007359A), Mar 23, 1996: Boeing 757222 (N503UA), Taos, NM. (.4)While in cruise flight at flight level 330, the flight encountered unforecasted and unexpected clear air turbulence. An elderly passenger who was in the…
- [Incident 19900213007179I](https://openairdocs.org/incident/19900213007179I), Feb 13, 1990: Boeing 757222 (N503UA), Indianapolis, IN. Fire warning NR1 engine on descent. Landed safely. Found a faulty fire detection loop.

## Service difficulty reports (79, 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 CALA2013102492380](https://openairdocs.org/sdr/CALA2013102492380), Oct 23, 2013: SKIN. GOUGED. STATION 1715, ABOVE STRINGER 20L, SKIN IS GOUGED. REMOVED DAMAGE IAW SRM 53-00-01. MATERIAL LOST IS 0.002.
- [SDR CALA2013100191632](https://openairdocs.org/sdr/CALA2013100191632), Oct 1, 2013: COVER. CRACKED. EMERGENCY EXIT LIGHT TRACK COVER FROM SEATS 8 THROUGH 40 IS CRACKED & MISSING SECTIONS. REPLACED EMERGENCY EXIT LIGHT COVER FROM ROW 40 FORWARD TO ROW 32. REPLA
- [SDR CALA2013100191631](https://openairdocs.org/sdr/CALA2013100191631), Oct 1, 2013: COVER. CRACKED. EMERGENCY EXIT LIGHT COVER CRACKED IN FRONT OF FWD AFT GALLEY. REPLACED EMERGENCY EXIT LIGHT COVER.
- [SDR CALA2013100191633](https://openairdocs.org/sdr/CALA2013100191633), Sep 29, 2013: CAP. MISSING. EMERGENCY EXIT LIGHT IN FRONT OF FWD CLOSET MISSING END CAP. REPLACED CAP.
- [SDR UALA2013070804720](https://openairdocs.org/sdr/UALA2013070804720), Jul 5, 2013: DOOR. INOPERATIVE. AFT CARGO DOOR INOPERATIVE. TROUBLESHOT AND FOUND EXT POWER PROBLEM, DISCONNECTED EXT PWR, ALL OPS CHECKED GOOD.
- [SDR UALA2013061204044](https://openairdocs.org/sdr/UALA2013061204044), Jun 11, 2013: WARNING SYSTEM. ACTIVATED. LOW FUEL EICAS MSGS, FLT DIVERTED. ALSO HAD AN AURAL ALERT.
- [SDR UALA2013050203078](https://openairdocs.org/sdr/UALA2013050203078), May 1, 2013: LIGHT. INOPERATIVE. EMERGENCY LIGHT IN FRONT OF MID LAV IS INOPERATIVE. REPLACED LIGHT ASSY, OPS CHECKED NORMAL. IAW AMM 33-51-96-401.
- [SDR UALA2013041602604](https://openairdocs.org/sdr/UALA2013041602604), Apr 15, 2013: BLADE. NICKED. NR 1 ENGINE FAN BLADE NR 33 HAS A NICK ON LEADING EDGE 1 INCH FROM TIP. REPAIRED DAMAGE REF AMM.
- [SDR UALA2013041302527](https://openairdocs.org/sdr/UALA2013041302527), Apr 9, 2013: SKIN. DAMAGED. ACP'D REPAIR AT BS 1602 ABOVE STRINGER 20R LAP JOINT AT C03 VISIT PER UA-EVA-73476 BY REMOVING DAMAGED SKIN AND INSTALLING A DOUBLER AND A FILLER. ACP'D REPAIR 
- [SDR UALA2012120707089](https://openairdocs.org/sdr/UALA2012120707089), Dec 5, 2012: WIRE HARNESS. FAULTY. LEFT SIDE WINDOW HEAT INOP. DISCONNECTED CONN D41578J INSULATED AND SECURED REF WDM 20-41-12 PG 1. REPLACED WIRE HARNESS.
- [SDR UALA2012091305190](https://openairdocs.org/sdr/UALA2012091305190), Sep 12, 2012: OUTLET. MISSING. PC POWER OUTLETS NOT INSTALLED ON 1ST CLASS SEATS.
- [SDR UALA2012090605005](https://openairdocs.org/sdr/UALA2012090605005), Sep 5, 2012: BLADE. DAMAGED. NR 1 ENGINE BIRD STRIKE. THE ENGINE VIB MONITOR WENT TO 1.4. ALL OTHER IND AND PARAMETERS NORMAL. FELT HIGH FREQ VIBRATION IN FLOOR. INSPECTION OF NR 1 ENGINE N
- [SDR UALA2012061403262](https://openairdocs.org/sdr/UALA2012061403262), Jun 14, 2012: LIGHT. INOPERATIVE. EMERGENCY TRACK FLOOR LIGHTING AT AFT FWD LAV INOP. REPLACED AFT FWD LAV EMERGENCY LIGHT. OPS CHECKED GOOD, REF MM 33-51-00 REF MM 33-51-11.
- [SDR UALA2012061403261](https://openairdocs.org/sdr/UALA2012061403261), Jun 14, 2012: LIGHT. INOPERATIVE. EMERGENCY TRACK FLOOR LIGHTING AT MID LAV INOP. REPLACED MID LAV EMERGENCY LIGHT REF MM 33-51-00 REF MM 33-51-11.
- [SDR UALA2012030901567](https://openairdocs.org/sdr/UALA2012030901567), Mar 9, 2012: WIRE. FAULTY. -2 (L=1, R=2, BOTH=3) WING LDG LIGHTS EXTINGUISH. LUG BROKEN. INSUFFICIENT WIRE LENGTH TO RELUG. NEED 12 GA SHIELDED WIRE, RE WD 33-42-12 . WIRE CAPPED, STOWED,
- [SDR UALA2012021500925](https://openairdocs.org/sdr/UALA2012021500925), Feb 15, 2012: GIRT BAR. DAMAGED. SLIDE LT IS ON DOOR IS NOT ARMED 4R. RPL GIRT BAR DUE TO DAMAGED BAR SPRINGS. GIRT BAR REPLACED & RIG CHECK.
- [SDR UALA2012012400491](https://openairdocs.org/sdr/UALA2012012400491), Jan 23, 2012: CONNECTOR. DIRTY. FUEL QTY BITE STATUS WITH RIGHT WING QTY AND BLANK TOTALIZER. REMOVED, CLEANED, AND RESEATED CONNECTOR D2814 AND BUSSING PLUG FOR RT FUEL TANK, OPS CHK GOOD. SE
- [SDR UALA2012012300445](https://openairdocs.org/sdr/UALA2012012300445), Jan 20, 2012: SKIN. WORN. LEFT WING NR 2 FLAP UPPER SURFACE SKIN OUTBOARD EDGE HAS A WORN SPOT. REPAIRED FLAP PER ECRA 5750-04419 ON SCAL LOG 9955553 DURING HMV 4 CHECK.
- [SDR UALA2012012000426](https://openairdocs.org/sdr/UALA2012012000426), Jan 19, 2012: FLOORBEAM. CORRODED. FLOORBEAM STA 395 RBL 55 HAS CORROSION AT NUT CLIP HOLE. REPAIRED PER ECRA 5310-05 433 ON SCAL LOG PAGE 9957145.
- [SDR UALA2012011900394](https://openairdocs.org/sdr/UALA2012011900394), Jan 18, 2012: SKIN. BUCKLED. FUSELAGE SKIN BUCKLED AROUND SEVERAL RIVETS STA 607-613 STRINGER 16 L. ACCOMPLISHED REPAIR ON FUSELAGE SKIN DURING HMV CHECK AT SCAL PER ECRA 5330-04185 ON LOG 
- [SDR UALA2012011900392](https://openairdocs.org/sdr/UALA2012011900392), Jan 18, 2012: STRUCTURE. DAMAGED. LWR AFT FUSELAGE, INSTALLED 2 EA DOUBLERS AT STA 1393 AND 1433 STR 28 REF TASK CARD 59745401C. INSTALLED 2EA DOUBLERS REF WC 59745401C.
- [SDR UALA2012011900391](https://openairdocs.org/sdr/UALA2012011900391), Jan 17, 2012: FLOORBEAM. CORRODED. PASSENGER CABIN MAIN DECK FLOORBEAM STA 377 RBL 48-63 IS CORRODED UPPER CAP. ACCOMPLISHED REPAIR DURING HMV 4 PER ECRA 5310-05432. WORK ACCOMPLISHED ON SCAL LOG
- [SDR UALA2012011800371](https://openairdocs.org/sdr/UALA2012011800371), Jan 17, 2012: FLOORBEAM. CORRODED. PASSENGER CABIN MAIN DECK FLOORBEAM STA 377 RBL 48-63 IS CORRODED UPPER CAP. MAJOR REPAIR ACCOMPLISHED. REPAIRED DURING HMV 4 PER ECRA 5310-05432. WORK ACCMP'D 
- [SDR UALA2012011600317](https://openairdocs.org/sdr/UALA2012011600317), Jan 14, 2012: DOOR FRAME. CORRODED. AFT CARGO AFT DOOR FRAME HAS A CORRODED HOLE APPROX .0250 DIA STA 1440 ABOVE STA S27R. REPAIR ACCOMPLISHED DURING HMV 4 ON SCAL LOG 9957898 PER ECRA 5310-05436.
- [SDR UALA2012010600128](https://openairdocs.org/sdr/UALA2012010600128), Jan 5, 2012: GATE. CORRODED. L2 DOOR GATE HAS CORROSION. REMOVED AND REPLACED L2 DOOR GATE WITH SERVICEABLE GATE.
- [SDR UALA2012010600127](https://openairdocs.org/sdr/UALA2012010600127), Jan 5, 2012: GATE. CORRODED. L4 UPPER DOOR GATE HAS CORROSION WORN THROUGH HOLE IN GATE. REPLACED L4 UPPER GATE WITH SERVICABLE PART.
- [SDR UALA2012010600126](https://openairdocs.org/sdr/UALA2012010600126), Jan 5, 2012: GATE. CORRODED. L2 DOOR UPPER GATE HAS CORROSION. REMOVED AND REPLACED L2 UPPER GATE WITH SERVICEABLE GATE.
- [SDR UALA2012010600125](https://openairdocs.org/sdr/UALA2012010600125), Jan 5, 2012: INTERCOSTAL. CORRODED. PAX CABIN MAIN DECK FLOOR AFT WET AREA BS 1620-1640 AT LBL 20 HAS CORROSION BY NUT PLATES ALONG INTERCOSTAL. MAJOR REPAIR ACCOMPLISHED: INSTALLED NEW INTERCOSTA
- [SDR UALA2012010600124](https://openairdocs.org/sdr/UALA2012010600124), Jan 5, 2012: GATE. CORRODED. L4 DOOR LOWER GATE CORRODED IN INTERNAL POCKET AREAS. REMOVED AND INSTALLED LOWER GATE.
- [SDR UALA2011122307081](https://openairdocs.org/sdr/UALA2011122307081), Dec 22, 2011: FLOORBEAM. CORRODED. PAX CABIN MAIN DECK FLOORBEAM 324 RBL 42 HAS CORROSION. MAJOR REPAIR ACCOMPLISHED. INSTALLED SPLICE REPAIR ON UPPER CHORD REF ECRA 5310-05426. WORK ACCOMPLISHED
- [SDR UALA2011122307079](https://openairdocs.org/sdr/UALA2011122307079), Dec 22, 2011: STRUCTURE. CORRODED. PAX CABIN MAIN DECK FLOOR CORROSION AT STA 365 BL 0 TO RBL 63. MAJOR REPAIR ACCOMPLISHED. ACCOMPLISHED UPPER CHORD SPLICE REPAIR REF EC-RA 5310-05427. WORK ACCO
- [SDR UALA2011092605168](https://openairdocs.org/sdr/UALA2011092605168), Sep 24, 2011: PIN. INSTALLED. FOUND AT DOOR 4R SLIDE BOTTLE PIN INSTALLED AND SHOWING IN BOTTLE WINDOW. THE PIN NEEDS TO BE REMOVED FROM DOOR 4R, PLUS ALL DOORS (1L&R, 2L&R, 4L) REQUIRE A CH
- [SDR UALA2011091204948](https://openairdocs.org/sdr/UALA2011091204948), Sep 11, 2011: WINDOW. DELAMINATED. WINDOW EICAS MSG DISPLAYED. POSITION 4.(1=L FWD, 2=L SIDE, 3=R FWD, 4=R SIDE) INOP LIGHT ILLUM. ALSO THE F/O SIDE WINDOW HAS DELAMINATION ON THE BOTTOM L CORNER
- [SDR UALA2011090204718](https://openairdocs.org/sdr/UALA2011090204718), Sep 1, 2011: WINDOW. DELAMINATED. RT SIDE WINDOW EICAS AND RT SIDE WINDOW HEAT SW INOP. LIGHT ILLUMINATED. MAINT TEXT: ACP'D BIT-VERIFY ON WINDOW HEAT CONTROL UNIT M191. TEST FAILED CONTROL UNIT
- [SDR UALA2011081604356](https://openairdocs.org/sdr/UALA2011081604356), Aug 14, 2011: ACTUATOR. FAULTY. GEAR DOOR EICAS AND GEAR DISAGREE EICAS ON GEAR RETRACTION. BOTH SLOW TO EXTINGUISH. SAMC TEXT: CREW REPORTS ALL GREEN DOWN LIGHTS EXTINGUISHED. ALL GEAR AND HY
- [SDR UALA2011081504301](https://openairdocs.org/sdr/UALA2011081504301), Aug 14, 2011: CONTROLLER. FAULTY. CHRONIC LT SIDE WINDOW HEAT. SWAP WHCU'S TO DETERMINE IF HARD FAULT OF 'SENSOR 3' FOLLOWS THE BOX. RECORD MR DASH NO'S FOR EACH ORIGINAL POSITION. SWAPPED WINDO
- [SDR UALA2011081504296](https://openairdocs.org/sdr/UALA2011081504296), Aug 14, 2011: UNKNOWN. OBSTRUCTED. COCKPIT AIR NOISE: OVERHEAD DIST SYSTEM IS PARTIALLY OBSTRUCTED, WITH NO AIRFLOW FORWARD OF ROW 4 AND NONE AFT OF ROW 29. CLEANED AFFECTED AREAS.
- [SDR UALA2011021000693](https://openairdocs.org/sdr/UALA2011021000693), Feb 10, 2011: BATTERY. INOPERATIVE. FIRST CLASS CABIN FLOOR EMERGENCY LIGHT INOP. REPLACED M732 EMERGENCY LIGHTS POWER SUPPLY BATTERY. EMERGENCY LIGHT OPS CHECKED OK.
- [SDR UALA2010102203915](https://openairdocs.org/sdr/UALA2010102203915), Oct 22, 2010: BATTERY. INOPERATIVE. EXTERIOR EVACUATION LIGHT AT L2 DOOR INOPERATIVE. REPLACED POWER SUPPLY BATTERY AT L2 DOOR. EXTERIOR EVACUATION LIGHT OPERATES OK.
- [SDR UALA2010102203914](https://openairdocs.org/sdr/UALA2010102203914), Oct 22, 2010: LAMP. INOPERATIVE. EXT EVAC LT AT DR 4LH INOP. CLEANED LAMP SOCKET AND REPLACED LAMP. OPS CKS OK.
- [SDR UALA2010040501122](https://openairdocs.org/sdr/UALA2010040501122), Apr 4, 2010: CONNECTOR. DAMAGED. RT GEAR DOOR OPEN. REPLACED SEQUENCE VALVE, RELEASE ACT, SAFETY VALVE, DOOR ACTUATOR, NO HELP. WILL CONTINUE TO TROUBLESHOOT. ABLE TO GET RT MLG DOOR UNLOCK LIG
- [SDR UALA2010030500775](https://openairdocs.org/sdr/UALA2010030500775), Mar 5, 2010: SKIN. DENTED. FUSELAGE SKIN DENTED AT STA 1621 ONE INCH ABOVE SR20 MEASURES 3.5 BY 3 INCHES AND .0625 DEEP. MAJOR REPAIR ACCOMPLISHED AT C03 ON SMB N-R R7826M PER EVA BY REMO
- [SDR UALA2010030500766](https://openairdocs.org/sdr/UALA2010030500766), Mar 3, 2010: SLIDE. TORN. RT OVERWING SLIDE FOUND UNPACKED AND TORN DURING LUBE. ACCOMPLISHED ON DOCK WU R7252M. REPLACED RT OVERWING SLIDE ASSY. SLIDE ARMED ON JC SEQ 325.
- [SDR UALA2010011100121](https://openairdocs.org/sdr/UALA2010011100121), Jan 9, 2010: COVER. FAULTY. 3R SLIDE LIGHT BLINKS ON AND OFF WITH DOOR DISARMED. DOOR 4R SLIDE COVER HOOK ASSY INSERTS PULLED OUT. REPLACED ENTIRE COVER ASSY. LIGHT CKS NORMAL.
- [SDR UALA2009110903494](https://openairdocs.org/sdr/UALA2009110903494), Nov 9, 2009: LIGHT. LOOSE. EMERGENCY EEL STRIP IS LOOSE ON FLOOR BETWEEN ROWS 33 AND 34. SECURED LIGHTING, REPLACED COVERING. LIGHTING TEST OKAY.
- [SDR UALA2009092503018](https://openairdocs.org/sdr/UALA2009092503018), Sep 23, 2009: ACTUATOR. DEFECTIVE. L/G DOOR ILLUM, RTFL. MLG DOOR RELEASE INTERLOCK ACTUATOR REPLACED. ACCMP'D DOOR OPERATION. DOOR OPERATED NORMALLY.
- [SDR UALA2009072002128](https://openairdocs.org/sdr/UALA2009072002128), Jul 19, 2009: LIGHT. INOPERATIVE. DOOR 2L EXTERIOR EVACUATION LIGHT INOP. RELAMPED EXTERIOR EVACUATION LIGHT.
- [SDR UALA2009060101559](https://openairdocs.org/sdr/UALA2009060101559), May 30, 2009: CONTACT. DIRTY. NR 4 MED EXTERIOR EMERGENCY EVACUATION LIGHT INOPERATIVE. CLEANED CONTACTS, OP CHECKS NORMAL.
- [SDR 2008UALA05690](https://openairdocs.org/sdr/2008UALA05690), Sep 11, 2008: O-RING. BLOWN. LOW BOTTLE. O-RING ON FILLER VALVE BLOWN OUT. REMOVED & REPLACED ALL EXTERNAL O-RINGS PER JD.
- [SDR 2008UALA03266](https://openairdocs.org/sdr/2008UALA03266), Jun 6, 2008: SLIDE. LOW PRESSURE. CREW REPORT: 2R SLIDE PACK PRESSURE LOW. PRESSURE LEAK. REPLACED SLIDE ASSY AT DOOR 2R.

All 79: https://openairdocs.org/aircraft/N503UA/reports.md

## STCs that may be installed (OpenAirDocs) (721, 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 757-222)

- [STC ST03438NY](https://openairdocs.org/stc/ST03438NY): Installation of Adams Rite Lavatory Equipment. Delta Engineering Corporation
- [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 ST12442IB](https://openairdocs.org/stc/ST12442IB): Installation of Iridium Certus Satellite System. ALAMO ENGINEERING GmbH
- [STC ST02158SE-D](https://openairdocs.org/stc/ST02158SE-D): Installation of interior reconfiguration. B/E Aerospace, Inc. - FSI
- [STC ST00197IB](https://openairdocs.org/stc/ST00197IB): Installation of the Universal Quick Access Recorder (uQAR). Flight Data Technologies Inc
- [STC ST02215AT-D](https://openairdocs.org/stc/ST02215AT-D): Interior reconfiguration. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST02391AT-D](https://openairdocs.org/stc/ST02391AT-D): Installation of Collins VDL Mode 2 System. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST02623AT-D](https://openairdocs.org/stc/ST02623AT-D): Interior reconfiguration. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST03493AT-D](https://openairdocs.org/stc/ST03493AT-D): Interior reconfiguration. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST03848AT-D](https://openairdocs.org/stc/ST03848AT-D): Installation of a Legrest and Curtain in a Crew Rest Area. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST03937AT](https://openairdocs.org/stc/ST03937AT): Installation of an Interior Reconfiguration. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST03951AT](https://openairdocs.org/stc/ST03951AT): Interior Reconfiguration. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST03953AT](https://openairdocs.org/stc/ST03953AT): Installation of TIMCO Aerosystems Cabin Interior Reconfiguration. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST03989AT](https://openairdocs.org/stc/ST03989AT): 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 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 ST03875NY](https://openairdocs.org/stc/ST03875NY): Installation of interior placards, signs and markings. Libellule Monde Inc
- [STC SA7473SW](https://openairdocs.org/stc/SA7473SW): Installation of tail floodlights. The Boeing Company
- [STC ST03186NY](https://openairdocs.org/stc/ST03186NY): Installation of a Panasonic Global Communication Suite (GCS) Antenna. Delta Engineering Corporation
- [STC SA2622NM](https://openairdocs.org/stc/SA2622NM): Installation of Precise Flight Pulselite Control Unit in landing/taxi system. (767-200 B17) (DHC-8 101). Precise Flight Inc
- [STC ST03187NY](https://openairdocs.org/stc/ST03187NY): Installation of a Panasonic Global Communication Suite (GCS). Delta Engineering Corporation
- [STC ST04635NY](https://openairdocs.org/stc/ST04635NY): Installation of Data Transmission & Automatic Calling. APTOZ EHF
- [STC ST03562AT](https://openairdocs.org/stc/ST03562AT): Modification of Passenger Aircraft to Freighter Configuration. STE Pensacola Aerospace, Inc
- [STC ST03952AT](https://openairdocs.org/stc/ST03952AT): Modification of Passenger Aircraft to Cargo/Passenger (Combi) Configuration. STE Pensacola Aerospace, Inc
- [STC ST12026AT](https://openairdocs.org/stc/ST12026AT): Installation of Portable Emergency Locator Transmitter. Delta Flight Products LLC
- [STC SA5040NM](https://openairdocs.org/stc/SA5040NM): Installation of cargo pallet and net. Satco Inc
- [STC ST02258LA-D](https://openairdocs.org/stc/ST02258LA-D): Installation of Row 44 Wireless Broadband System Activation. Anuvu IFC Corporation
- [STC ST02904CH](https://openairdocs.org/stc/ST02904CH): Installation of Row 44 Wireless Broadband System Provisions. ANUVU OPERATIONS LLC
- [STC ST03450AT](https://openairdocs.org/stc/ST03450AT): Installation of a horse stall system. Gregory Jackson
- [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 ST03885AT](https://openairdocs.org/stc/ST03885AT): Installation of an Avionica, Inc. avCM Cellular Module. Aircraft Systems and Manufacturing Inc
- [STC SA4203NM-D](https://openairdocs.org/stc/SA4203NM-D): Installation of one (1) galley G4A storage unit. Safran Cabin Inc
- [STC SA4210NM-D](https://openairdocs.org/stc/SA4210NM-D): Installation of one class divider. Safran Cabin Inc
- [STC SA4561NM](https://openairdocs.org/stc/SA4561NM): Installation of Driessen Galleys. Safran Cabin Inc
- [STC SA5819NM](https://openairdocs.org/stc/SA5819NM): Installation of closet and class divider. Safran Cabin Inc
- [STC SA6005NM](https://openairdocs.org/stc/SA6005NM): Installation of galleys, stowage unit, doghouses and curtain tracks. Safran Cabin Inc
- [STC ST00247LA](https://openairdocs.org/stc/ST00247LA): Installation of Closet. Safran Cabin Inc
- [STC ST00487LA](https://openairdocs.org/stc/ST00487LA): Installation of stowage bin door kit. Safran Cabin Inc
- [STC ST00657SE](https://openairdocs.org/stc/ST00657SE): Installation of ATIX2 Interior retrofit kit. Safran Cabin Inc
- [STC ST00784SE](https://openairdocs.org/stc/ST00784SE): Installation of ATIX 2 Interior retrofit kit. Safran Cabin Inc
- [STC ST00869SE](https://openairdocs.org/stc/ST00869SE): Modification to overhead stowage bins located in passenger cabin to extend bins inboard. Safran Cabin Inc
- [STC ST00955LA](https://openairdocs.org/stc/ST00955LA): Installation of bin extension assembly. Safran Cabin Inc
- [STC ST01144LA](https://openairdocs.org/stc/ST01144LA): Installation of a L/H closet p/n 501081-1. Safran Cabin Inc
- [STC ST01145LA](https://openairdocs.org/stc/ST01145LA): Installation of a R/H Divider p/n 501082-1. Safran Cabin Inc
- [STC ST01146LA](https://openairdocs.org/stc/ST01146LA): Installation of a Curtain Header p/n 501083-1. Safran Cabin Inc
- [STC ST01151LA](https://openairdocs.org/stc/ST01151LA): Installation of a closet P/N 501084-1. Safran Cabin Inc
- [STC ST01187LA](https://openairdocs.org/stc/ST01187LA): Installation of a G4A Galley. Safran Cabin Inc
- [STC ST01334LA](https://openairdocs.org/stc/ST01334LA): Installation of a reinforced cockpit door. Safran Cabin Inc

All 721: https://openairdocs.org/aircraft/N503UA/stcs.md

## Related

- Other Boeing 757-222 aircraft: https://openairdocs.org/model/boeing-757-222/aircraft.md
- The Pratt & Whitney PW2040 engine: https://openairdocs.org/engine/pratt-whitney-pw2040.md

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