# N521UW: 2009 Airbus A321-231 - Status: Valid registration - Airframe: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (registry code 3940032, 379 seats) - Engine: [IAE V2533-A5](https://openairdocs.org/engine/iae-v2533-a5) (registry code 34611) - Data sheets: [TCDS A28NM](https://openairdocs.org/tcds/A28NM) (Airbus SAS), [TCDS E40NE](https://openairdocs.org/tcds/E40NE) (International Aero Engines AG (IAE)) (OpenAirDocs) - Serial number: 3944 - Year built: 2009 - Type: Fixed wing multi engine - Engine type: Turbo-fan - Airworthiness: Standard, transport - Airworthiness date: June 19, 2009 - Certificate issued: December 30, 2015 - Expires: December 31, 2028 - Mode S code: A68E7C - Registered owner: [American Airlines Inc](https://openairdocs.org/faa-owner/AMERICAN%20AIRLINES%20INC) - Location: [Fort Worth, TX](https://openairdocs.org/faa-place/TX/Fort%20Worth) - Owner type: Corporation - Owner's area on the map: 32.8240° N, 97.0491° W: Placed by OpenAirDocs at the center of ZIP code 76155, 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=521UW - Page: https://openairdocs.org/aircraft/N521UW 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): 293 in force ### Matched by airframe (Airbus A321-231) - [AD 2026-17-04](https://openairdocs.org/ad/2026-17-04): Landing Gear · Airbus A318-111, A318-112, A318-121 and 46 more. Effective Oct 1, 2026 - [AD 2026-17-01](https://openairdocs.org/ad/2026-17-01): Fuselage · Airbus A320-211, A320-212, A320-214 and 12 more. Effective Oct 1, 2026 - [AD 2026-18-03](https://openairdocs.org/ad/2026-18-03): Wings · Airbus A318-112, A319-115, A319-132 and 14 more. Effective Sep 18, 2026 - [AD 2026-14-04](https://openairdocs.org/ad/2026-14-04): Fuselage · Airbus A319-111, A319-112, A319-113 and 56 more. Effective Aug 14, 2026 - [AD 2026-12-02](https://openairdocs.org/ad/2026-12-02): Fuselage · Airbus A318-111, A318-112, A318-121 and 46 more. Effective Jul 14, 2026 - [AD 2026-10-17](https://openairdocs.org/ad/2026-10-17): Fuselage · Airbus A318-111, A318-112, A318-121 and 24 more. Effective Jul 6, 2026 - [AD 2026-10-15](https://openairdocs.org/ad/2026-10-15): Fuselage · Airbus A318-111, A318-112, A318-122 and 35 more. Effective Jul 6, 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 2026-09-17](https://openairdocs.org/ad/2026-09-17): Time Limits/Maintenance Checks · Airbus A318-111, A318-112, A318-121 and 45 more. Effective Jun 18, 2026 - [AD 2026-09-16](https://openairdocs.org/ad/2026-09-16): Fuselage · Airbus A319-111, A319-112, A319-113 and 33 more. Effective Jun 18, 2026 - [AD 2026-11-04](https://openairdocs.org/ad/2026-11-04): Stabilizers · Airbus A319-111, A319-112, A319-113 and 40 more. Effective Jun 15, 2026 - [AD 2026-09-03](https://openairdocs.org/ad/2026-09-03): Time Limits/Maintenance Checks · Airbus A318-111, A318-112, A318-121 and 45 more. Effective Jun 12, 2026 - [AD 2026-03-10](https://openairdocs.org/ad/2026-03-10): Time Limits/Maintenance Checks · Airbus A318-111, A318-112, A318-121 and 45 more. Effective Apr 8, 2026 - [AD 2025-23-09](https://openairdocs.org/ad/2025-23-09): Fuselage · Airbus A318-111, A318-112, A318-121 and 24 more. Effective Jan 13, 2026 - [AD 2025-24-51](https://openairdocs.org/ad/2025-24-51): Flight controls · Airbus A319-111, A319-112, A319-113 and 37 more. Effective Jan 6, 2026 - [AD 2025-20-19](https://openairdocs.org/ad/2025-20-19): Fuselage · Airbus A318-111, A318-112, A318-121 and 24 more. Effective Jan 2, 2026 - [AD 2025-20-15](https://openairdocs.org/ad/2025-20-15): Fuselage · Airbus A318-111, A318-112, A318-121 and 43 more. Effective Jan 2, 2026 - [AD 2025-19-08](https://openairdocs.org/ad/2025-19-08): Wings · Airbus A319-111, A319-113, A319-112 and 17 more. Effective Dec 30, 2025 - [AD 2025-18-03](https://openairdocs.org/ad/2025-18-03): Oxygen · Airbus A318-111, A318-112, A318-121 and 70 more. Effective Oct 20, 2025 - [AD 2025-17-05](https://openairdocs.org/ad/2025-17-05): Fuselage · Airbus A321-111, A321-112, A321-131 and 5 more. Effective Oct 1, 2025 - [AD 2025-16-10](https://openairdocs.org/ad/2025-16-10): Flight controls · Airbus A318-111, A318-112, A318-121 and 44 more. Effective Sep 22, 2025 - [AD 2025-16-04](https://openairdocs.org/ad/2025-16-04): Equipment/furnishings · Airbus A318-111, A318-112, A318-121 and 46 more. Effective Sep 18, 2025 - [AD 2025-17-17](https://openairdocs.org/ad/2025-17-17): Landing Gear · Airbus A318-111, A318-112, A318-121 and 46 more. Effective Sep 17, 2025 - [AD 2025-13-10](https://openairdocs.org/ad/2025-13-10): Wings · Airbus A319-111, A319-112, A319-113 and 36 more. Effective Aug 14, 2025 - [AD 2025-10-07](https://openairdocs.org/ad/2025-10-07): Fuselage · Airbus A318-111, A318-112, A318-121 and 43 more. Effective Jun 26, 2025 - [AD 2025-10-05](https://openairdocs.org/ad/2025-10-05): Landing gear · Airbus A321-111, A321-112, A321-131 and 15 more. Effective Jun 26, 2025 - [AD 2025-09-05](https://openairdocs.org/ad/2025-09-05): Fuselage · Airbus A318-111, A318-112, A318-121 and 24 more. Effective Jun 5, 2025 - [AD 2025-02-04](https://openairdocs.org/ad/2025-02-04): Time Limits/Maintenance Checks · Airbus A318-111, A318-112, A318-121 and 43 more. Effective Mar 17, 2025 - [AD 2025-01-02](https://openairdocs.org/ad/2025-01-02): Fuselage · Airbus A319-111, A319-112, A319-113 and 20 more. Effective Mar 11, 2025 - [AD 2024-26-05](https://openairdocs.org/ad/2024-26-05): Oxygen · Airbus A300 B4-601, A300 B4-603, A300 B4-620 and 87 more. Effective Mar 11, 2025 - [AD 2024-25-12](https://openairdocs.org/ad/2024-25-12): Landing gear · Airbus A319-111, A319-112, A319-113 and 35 more. Effective Mar 7, 2025 - [AD 2025-03-08](https://openairdocs.org/ad/2025-03-08): Flight Controls · Airbus A318-111, A318-112, A318-121 and 70 more. Effective Feb 26, 2025 - [AD 2024-26-04](https://openairdocs.org/ad/2024-26-04): Pneumatic · Airbus A318-111, A318-112, A318-121 and 44 more. Effective Feb 18, 2025 - [AD 2024-24-10](https://openairdocs.org/ad/2024-24-10): Time Limits/Maintenance Checks · Airbus A318-111, A318-112, A318-121 and 43 more. Effective Jan 13, 2025 - [AD 2024-24-09](https://openairdocs.org/ad/2024-24-09): Equipment/Furnishings · Airbus A318-111, A318-112, A318-121 and 43 more. Effective Jan 13, 2025 - [AD 2024-19-15](https://openairdocs.org/ad/2024-19-15): Oxygen · Safran Aerosystems Oxygen Cylinder, Valve Assembly, Oxygen Valve and 103 more. Effective Nov 26, 2024 - [AD 2024-12-01](https://openairdocs.org/ad/2024-12-01): Wings · Airbus A318-111, A318-112, A318-121 and 25 more. Effective Aug 13, 2024 - [AD 2024-11-01](https://openairdocs.org/ad/2024-11-01): Electrical Power · Airbus A300 B4-2C, A300 B4-103, A300 B4-203 and 94 more. Effective Jul 3, 2024 - [AD 2024-08-08](https://openairdocs.org/ad/2024-08-08): Electrical Power · Airbus A300 B4-2C, A300 B4-103, A300 B4-203 and 94 more. Effective Jun 6, 2024 - [AD 2024-06-07](https://openairdocs.org/ad/2024-06-07): Wings · Airbus A319-115, A320-214, A320-216 and 14 more. Effective May 22, 2024 - [AD 2024-04-04](https://openairdocs.org/ad/2024-04-04): Fuselage · Airbus A318-111, A318-112, A318-121 and 24 more. Effective Apr 22, 2024 - [AD 2023-23-11](https://openairdocs.org/ad/2023-23-11): Landing gear · Airbus A318-111, A318-112, A318-121 and 24 more. Effective Jan 23, 2024 - [AD 2023-23-04](https://openairdocs.org/ad/2023-23-04): Wings · Airbus A321-111, A321-112, A321-131 and 5 more. Effective Jan 16, 2024 - [AD 2023-23-08](https://openairdocs.org/ad/2023-23-08): Electric and electronic common installation · Airbus A318-111, A318-112, A318-121 and 24 more. Effective Jan 5, 2024 - [AD 2023-20-12](https://openairdocs.org/ad/2023-20-12): Equipment/Furnishings · Airbus A318-111, A318-112, A318-121 and 38 more. Effective Nov 21, 2023 - [AD 2023-18-02](https://openairdocs.org/ad/2023-18-02): Fuselage · Airbus A318-111, A318-112, A318-121 and 24 more. Effective Oct 24, 2023 - [AD 2023-13-03](https://openairdocs.org/ad/2023-13-03): Doors · Airbus A318-111, A318-112, A318-121 and 43 more. Effective Sep 5, 2023 - [AD 2023-13-01](https://openairdocs.org/ad/2023-13-01): Fuel · Airbus A318-111, A318-112, A318-121 and 43 more. Effective Jul 12, 2023 - [AD 2023-09-11](https://openairdocs.org/ad/2023-09-11): Fuselage · Airbus A318-111, A318-112, A318-121 and 24 more. Effective Jul 10, 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 ### Matched by engine (IAE V2533-A5) - [AD 2026-17-03](https://openairdocs.org/ad/2026-17-03): Turbine Engine Compressor Section · International Aero Engines V2522-A5, V2524-A5, V2525-D5 and 7 more. Effective Sep 24, 2026 - [AD 2025-19-13](https://openairdocs.org/ad/2025-19-13): Turbine Section · International Aero Engines V2522-A5, V2524-A5, V2525-D5 and 7 more. Effective Oct 29, 2025 - [AD 2025-17-16](https://openairdocs.org/ad/2025-17-16): Turbine Engine Compressor Sections · International Aero Engines V2522-A5, V2524-A5, V2525-D5 and 7 more. Effective Oct 10, 2025 - [AD 2024-11-03](https://openairdocs.org/ad/2024-11-03): Turbine Engine · International Aero Engines V2522-A5, V2524-A5, V2525-D5 and 7 more. Effective Jun 26, 2024 - [AD 2022-02-09](https://openairdocs.org/ad/2022-02-09): Turbine Section · International Aero Engines V2522-A5, V2524-A5, V2525-D5 and 7 more. Effective Mar 15, 2022 - [AD 2021-14-19](https://openairdocs.org/ad/2021-14-19): Turbine Section · International Aero Engines V2522-A5, V2524-A5, V2525-D5 and 7 more. Effective Aug 5, 2021 - [AD 2021-11-51](https://openairdocs.org/ad/2021-11-51): Turbine Section · International Aero Engines V2522-A5, V2524-A5, V2527-A5 and 4 more. Effective Jul 19, 2021 - [AD 2021-05-18](https://openairdocs.org/ad/2021-05-18): Turbine Section · International Aero Engines V2500-A1, V2522-A5, V2524-A5 and 8 more. Effective Apr 29, 2021 - [AD 2021-01-03](https://openairdocs.org/ad/2021-01-03): Turbine Section · International Aero Engines V2500-A1, V2522-A5, V2524-A5 and 8 more. Effective Jan 21, 2021 - [AD 2020-09-03](https://openairdocs.org/ad/2020-09-03): Turbine Engine Compressor Section · International Aero Engines V2500-A1, V2522-A5, V2524-A5 and 8 more. Effective May 29, 2020 - [AD 2020-07-51](https://openairdocs.org/ad/2020-07-51): Turbine Section · International Aero Engines V2522-A5, V2524-A5, V2525-D5 and 6 more. Effective Apr 28, 2020 - [AD 2019-18-01](https://openairdocs.org/ad/2019-18-01): Turbine Section · International Aero Engines V2522-A5, V2524-A5, V2527-A5 and 4 more. Effective Oct 15, 2019 - [AD 2017-14-07](https://openairdocs.org/ad/2017-14-07): Turbine Engine · International Aero Engines V2522-A5, V2524-A5, V2525-D5 and 7 more. Effective Aug 21, 2017 - [AD 2016-25-11](https://openairdocs.org/ad/2016-25-11): No. 3 bearing · International Aero Engines V2522-A5, V2524-A5, V2525-D5 and 7 more. Effective Jan 20, 2017 - [AD 2016-18-10](https://openairdocs.org/ad/2016-18-10): High- pressure turbine (HPT) stage 2 hub · International Aero Engines V2522-A5, V2524-A5, V2525-D5 and 6 more. Effective Oct 7, 2016 - [AD 2015-10-04](https://openairdocs.org/ad/2015-10-04): HPC stage 3 to 8 drum · International Aero Engines V2500-A1, V2522-A5, V2524-A5 and 7 more. Effective Jul 1, 2015 - [AD 2011-25-08](https://openairdocs.org/ad/2011-25-08): High- pressure turbine (HPT) case burn-through events · International Aero Engines V2500-A1, V2522-A5, V2524-A5 and 7 more. Effective Jan 17, 2012 - [AD 2010-06-18](https://openairdocs.org/ad/2010-06-18): Vortex reducers · International Aero Engines V2500-A1, V2522-A5, V2524-A5 and 7 more. Effective Apr 22, 2010 - [AD 2008-14-15](https://openairdocs.org/ad/2008-14-15): No. 4 bearing oil system components · International Aero Engines V2500-A1, V2522-A5, V2524-A5 and 7 more. Effective Aug 20, 2008 - [AD 2007-21-05](https://openairdocs.org/ad/2007-21-05): Monitoring of N2 vibration on all IAE V2500 series engines · International Aero Engines V2500-A1, V2522-A5, V2524-A5 and 7 more. Effective Nov 15, 2007 - [AD 2006-25-01](https://openairdocs.org/ad/2006-25-01): Master magnetic chip detector (MCD) · International Aero Engines V2522-A5, V2524-A5, V2527-A5 and 4 more. Effective Jan 8, 2007 - [AD 2004-12-08](https://openairdocs.org/ad/2004-12-08): Airworthiness Limitations Section (ALS) · International Aero Engines V2500-A1, V2522-A5, V2524-A5 and 7 more. Effective Jul 23, 2004 - [AD 2000-22-07](https://openairdocs.org/ad/2000-22-07): High Pressure Turbine (HPT) · International Aero Engines V2522-A5, V2524-A5, V2525-D5 and 6 more. Effective Dec 6, 2000 - [AD 99-13-01](https://openairdocs.org/ad/99-13-01): High Pressure Turbine (HPT) Stage 1 Inner Rotating Airseal (TOBI ID seal) · International Aero Engines V2500-A1, V2522-A5, V2524-A5 and 4 more. Effective Jun 25, 1999 - [AD 99-04-03](https://openairdocs.org/ad/99-04-03): High Pressure Compressor (HPC) Stage 9-12 Drum · International Aero Engines V2522-A5, V2524-A5, V2525-D5 and 5 more. Effective Apr 12, 1999 ### Historical (superseded or no longer in force) - [AD 2025-17-07](https://openairdocs.org/ad/2025-17-07) (historical): Time Limits/Maintenance Checks · Airbus A318-111, A318-112, A318-121 and 44 more. Effective Oct 1, 2025 - [AD 2025-10-12](https://openairdocs.org/ad/2025-10-12) (historical): Fuselage · Airbus A319-111, A319-112, A319-113 and 55 more. Effective Jul 2, 2025 - [AD 2025-03-07](https://openairdocs.org/ad/2025-03-07) (historical): Time Limits/Maintenance Checks · Airbus A318-111, A318-112, A318-121 and 43 more. Effective Mar 21, 2025 - [AD 2025-03-06](https://openairdocs.org/ad/2025-03-06) (historical): Time Limits/Maintenance Checks · Airbus A318-111, A318-112, A318-121 and 43 more. Effective Mar 21, 2025 - [AD 2024-25-06](https://openairdocs.org/ad/2024-25-06) (historical): Landing Gear · Airbus A318-111, A318-112, A318-121 and 44 more. Effective Dec 30, 2024 - [AD 2024-19-13](https://openairdocs.org/ad/2024-19-13) (historical): Time Limits/Maintenance Checks · Airbus A320-211, A320-212, A320-214 and 43 more. Effective Nov 26, 2024 - [AD 2024-04-07](https://openairdocs.org/ad/2024-04-07) (historical): Time Limits/Maintenance Checks · Airbus A318-111, A318-112, A318-121 and 43 more. Effective Apr 22, 2024 - [AD 2024-04-03](https://openairdocs.org/ad/2024-04-03) (historical): Time Limits/Maintenance Checks · Airbus A318-111, A318-112, A318-121 and 43 more. Effective Apr 19, 2024 - [AD 2023-25-09](https://openairdocs.org/ad/2023-25-09) (historical): Oxygen · Airbus A318-111, A318-112, A318-121 and 69 more. Effective Feb 7, 2024 - [AD 2023-13-11](https://openairdocs.org/ad/2023-13-11) (historical): Oxygen · AVOX Systems Oxygen valve assemblies (body and gage assemblies), Oxygen cylinder and valve assemblies, A300 B2-1A and 102 more. Effective Sep 5, 2023 - [AD 2023-13-10](https://openairdocs.org/ad/2023-13-10) (historical): Time Limits/Maintenance Checks · Airbus A318-111, A318-112, A318-121 and 43 more. Effective Sep 5, 2023 - [AD 2023-09-01](https://openairdocs.org/ad/2023-09-01) (historical): Pneumatic · Airbus A318-111, A318-112, A318-121 and 43 more. Effective Jun 26, 2023 - [AD 2023-05-02](https://openairdocs.org/ad/2023-05-02) (historical): Time Limits/Maintenance Checks · Airbus A318-111, A318-112, A318-121 and 43 more. Effective Apr 18, 2023 - [AD 2023-04-06](https://openairdocs.org/ad/2023-04-06) (historical): Time Limits/Maintenance Checks · Airbus A318-111, A318-112, A318-121 and 43 more. Effective Apr 10, 2023 - [AD 2022-24-05](https://openairdocs.org/ad/2022-24-05) (historical): Equipment/Furnishings · Airbus A318-111, A318-112, A318-121 and 43 more. Effective Jan 9, 2023 - [AD 2022-22-10](https://openairdocs.org/ad/2022-22-10) (historical): Time Limits/Maintenance Checks · Airbus A318-111, A318-112, A318-121 and 43 more. Effective Dec 30, 2022 - [AD 2022-18-09](https://openairdocs.org/ad/2022-18-09) (historical): Equipment/Furnishings · Airbus A319-111, A319-112, A319-113 and 24 more. Effective Oct 20, 2022 - [AD 2022-15-05](https://openairdocs.org/ad/2022-15-05) (historical): Fuselage · Airbus A318-111, A318-112, A318-121 and 24 more. Effective Aug 31, 2022 - [AD 2022-14-10](https://openairdocs.org/ad/2022-14-10) (historical): Wings · Airbus A318-111, A318-112, A318-121 and 24 more. Effective Aug 19, 2022 - [AD 2022-09-16](https://openairdocs.org/ad/2022-09-16) (historical): Time Limits/Maintenance Checks · Airbus A318-111, A318-112, A318-121 and 42 more. Effective Jun 30, 2022 - [AD 2022-08-08](https://openairdocs.org/ad/2022-08-08) (historical): Fuselage · Airbus A318-111, A318-112, A318-121 and 24 more. Effective May 26, 2022 - [AD 2022-07-08](https://openairdocs.org/ad/2022-07-08) (historical): Time Limits/Maintenance Checks, Flight Controls · Airbus A318-111, A318-112, A318-121 and 43 more. Effective May 19, 2022 - [AD 2022-07-15](https://openairdocs.org/ad/2022-07-15) (historical): Landing gear · Airbus A318-111, A318-112, A318-121 and 43 more. Effective May 2, 2022 - [AD 2022-06-02](https://openairdocs.org/ad/2022-06-02) (historical): Equipment/furnishings · Airbus A318-111, A318-112, A319-111 and 22 more. Effective Apr 26, 2022 - [AD 2022-04-09](https://openairdocs.org/ad/2022-04-09) (historical): Oxygen System · Airbus A300 B2-1A, A300 B2-1C, A300 B2K-3C and 94 more. Effective Apr 4, 2022 - [AD 2022-04-03](https://openairdocs.org/ad/2022-04-03) (historical): Time Limits/Maintenance Checks · Airbus A318-111, A318-112, A318-121 and 42 more. Effective Mar 30, 2022 - [AD 2022-02-11](https://openairdocs.org/ad/2022-02-11) (historical): Fuselage · Airbus A318-111, A318-112, A318-121 and 24 more. Effective Mar 15, 2022 - [AD 2021-23-15](https://openairdocs.org/ad/2021-23-15) (historical): Equipment/Furnishings · Airbus A319-111, A319-112, A319-113 and 20 more. Effective Jan 10, 2022 - [AD 2021-25-14](https://openairdocs.org/ad/2021-25-14) (historical): Wings · Airbus A319-111, A319-112, A319-113 and 20 more. Effective Jan 5, 2022 - [AD 2021-22-04](https://openairdocs.org/ad/2021-22-04) (historical): Wings · Airbus A318-111, A318-112, A318-121 and 24 more. Effective Dec 27, 2021 - [AD 2021-20-08](https://openairdocs.org/ad/2021-20-08) (historical): Electrical Power · Airbus A318-111, A318-112, A318-121 and 72 more. Effective Nov 18, 2021 - [AD 2021-16-01](https://openairdocs.org/ad/2021-16-01) (historical): Time Limits/Maintenance Checks · Airbus A318-111, A318-112, A318-121 and 42 more. Effective Sep 28, 2021 - [AD 2020-25-03](https://openairdocs.org/ad/2020-25-03) (historical): Equipment/furnishings · Airbus A318-111, A318-112, A318-121 and 42 more. Effective Dec 28, 2020 - [AD 2020-22-16](https://openairdocs.org/ad/2020-22-16) (historical): Time Limits/Maintenance Checks · Airbus A318-111, A318-112, A318-121 and 42 more. Effective Dec 10, 2020 - [AD 2020-21-11](https://openairdocs.org/ad/2020-21-11) (historical): Time Limits/Maintenance Checks · Airbus A318-111, A318-112, A318-121 and 42 more. Effective Nov 20, 2020 - [AD 2020-21-10](https://openairdocs.org/ad/2020-21-10) (historical): Time Limits/Maintenance Checks · Airbus A318-111, A318-112, A318-121 and 42 more. Effective Nov 19, 2020 - [AD 2020-20-05](https://openairdocs.org/ad/2020-20-05) (historical): Time Limits/Maintenance Checks · Airbus A318-111, A318-112, A318-121 and 42 more. Effective Nov 19, 2020 - [AD 2020-16-01](https://openairdocs.org/ad/2020-16-01) (historical): Fire protection · Airbus A318-111, A318-112, A318-121 and 43 more. Effective Aug 19, 2020 - [AD 2020-06-10](https://openairdocs.org/ad/2020-06-10) (historical): Fuselage · Airbus A318-111, A318-112, A318-121 and 24 more. Effective May 4, 2020 - [AD 2020-05-16](https://openairdocs.org/ad/2020-05-16) (historical): Wings · Airbus A319-115, A320-214, A320-216 and 11 more. Effective Apr 24, 2020 - [AD 2020-06-18](https://openairdocs.org/ad/2020-06-18) (historical): Flight controls · Airbus A318-111, A318-112, A318-121 and 43 more. Effective Apr 2, 2020 - [AD 2019-26-11](https://openairdocs.org/ad/2019-26-11) (historical): Equipment/ furnishings · Airbus A318-112, A319-115, A319-132 and 11 more. Effective Mar 12, 2020 - [AD 2020-01-17](https://openairdocs.org/ad/2020-01-17) (historical): Equipment/ furnishings · Airbus A318-111, A318-112, A318-121 and 43 more. Effective Feb 14, 2020 - [AD 2019-24-13](https://openairdocs.org/ad/2019-24-13) (historical): Fuselage · Airbus A318-111, A318-112, A318-121 and 24 more. Effective Feb 3, 2020 - [AD 2019-23-01](https://openairdocs.org/ad/2019-23-01) (historical): Time Limits/ Maintenance Checks · Airbus A318-111, A318-112, A318-121 and 37 more. Effective Jan 9, 2020 - [AD 2019-21-10](https://openairdocs.org/ad/2019-21-10) (historical): Wings · Airbus A321-111, A321-112, A321-131 and 5 more. Effective Dec 24, 2019 - [AD 2019-20-10](https://openairdocs.org/ad/2019-20-10) (historical): Fuselage · Airbus A318-111, A318-112, A318-121 and 24 more. Effective Dec 18, 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 2019-19-15](https://openairdocs.org/ad/2019-19-15) (historical): Time Limits/ Maintenance Checks · Airbus A318-111, A318-112, A318-121 and 36 more. Effective Nov 14, 2019 - [AD 2019-18-07](https://openairdocs.org/ad/2019-18-07) (historical): Fuselage · Airbus A319-111, A319-112, A319-113 and 20 more. Effective Oct 31, 2019 All 436: https://openairdocs.org/aircraft/N521UW/ads.md ## Information bulletins (advisory) (5 in force) - [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-14-21](https://openairdocs.org/saib/NM-14-21): Communications: Honeywell RTA 44D VHF Transceivers. Issued Jun 3, 2014 - [SAIB NM-13-03](https://openairdocs.org/saib/NM-13-03): Hydraulic Power System: Power Transfer Unit. Issued Oct 23, 2012 - [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 2026-11](https://openairdocs.org/saib/2026-11): Theft of Turbofan Engine Parts before Mutilation. Issued Jun 8, 2026 ## NTSB investigations None matched to N521UW. ## FAA accident and incident reports None matched to N521UW. ## Service difficulty reports (175, 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 AALA202607066735](https://openairdocs.org/sdr/AALA202607066735), Jul 2, 2026: HANDLE. LOOSE. AIRCRAFT WAS NOT GROUNDED: LEVER TO ARM DOOR 3L IS LOOSE. MAINTENANCE TIGHTENED LOOSE DOOR ARMED LEVER HANDLE ON 3L PER AMM 52-22-11. - [SDR AALA202606045473](https://openairdocs.org/sdr/AALA202606045473), Jun 2, 2026: BATTERY. NO TEST. AIRCRAFT WAS NOT GROUNDED: FLASHLIGHT AT 4R IS INOPERATIVE. MAINTENANCE REPLACED FLASHLIGHT BATTERY PER AMM 25-60-00. - [SDR AALA202605136039](https://openairdocs.org/sdr/AALA202605136039), May 12, 2026: CONTACT. BURNED. AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED INTO ORD DUE TO THE FLIGHT CREW REPORTING THAT THE NR 1 GENERATOR FAILED DURING FLIGHT. THE AIRCRAFT LANDED SAF - [SDR AALA202605111815](https://openairdocs.org/sdr/AALA202605111815), May 9, 2026: BATTERY. NO TEST. AIRCRAFT WAS NOT GROUNDED: FAULT MESSAGE FOR AFT LEFT EMERGENCY POWER SUPPLY UNIT DISPLAYED DURING SYSTEM TEST. MAINTENANCE REPLACED THE EMERGENCY POWER SUPPLY - [SDR AALA202605110506](https://openairdocs.org/sdr/AALA202605110506), May 9, 2026: POWER SUPPLY. NO TEST. AIRCRAFT WAS NOT GROUNDED: FAULT MESSAGE FOR AFT LEFT EMERGENCY POWER SUPPLY UNIT DISPLAYED DURING SYSTEM TEST. MAINTENANCE REPLACED THE EMERGENCY POWER SUPPLY - [SDR AALA202604305480](https://openairdocs.org/sdr/AALA202604305480), Apr 28, 2026: HANDLE. LOOSE. AIRCRAFT WAS NOT GROUNDED: DOOR 3L HANDLE TO ARM THE SLIDE LOOSE. MAINTENANCE TIGHTENED ARM HANDLE ON 3L DOOR AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK - [SDR AALA202603257841](https://openairdocs.org/sdr/AALA202603257841), Mar 24, 2026: BOTTLE. LOW PRESSURE. AIRCRAFT IN BASE MAINTENANCE: L1 DOOR DAMPER AND EMERGENCY OPERATION CYLINDER PRESSURE LOW. SERVICED DOOR DAMPER AND EMERGENCY OPERATION CYLINDER PER AMM 52-10- - [SDR AALA202603243406](https://openairdocs.org/sdr/AALA202603243406), Mar 21, 2026: HANDLE. LOOSE. AIRCRAFT WAS NOT GROUNDED: DOOR 3R. SLIDE ARM HANDLE LOOSE. MAINTENANCE TIGHTENED HANDLE PER AMM 52-13-22. - [SDR AALA202603036483](https://openairdocs.org/sdr/AALA202603036483), Mar 2, 2026: BATTERY. NO TEST. AIRCRAFT WAS NOT GROUNDED: 4L FLIGHT ATTENDANT JUMPSEAT FLASHLIGHT BATTERY IS DEAD. FLIGHT ATTENDANT REPORTS SOMEONE LIKELY USED IT AND INSTALLED BACKWARDS WHIC - [SDR AALA202601044587](https://openairdocs.org/sdr/AALA202601044587), Jan 1, 2026: PACKING. LEAKING. AIRCRAFT WAS GROUNDED: AIRCRAFT DIVERTED TO PHX DUE TO THE FLIGHT CREW REPORTING THAT DURING CLIMBOUT THERE WAS A STRONG ODOR OF CHEESE OR DIRTY SOCKS IN THE FL - [SDR AALA202512155967](https://openairdocs.org/sdr/AALA202512155967), Dec 11, 2025: LEVER. LOOSE. AIRCRAFT WAS NOT GROUNDED: DOOR 3L ARMING LEVER COVER NOT SECURED. MAINTENANCE SECURED DOOR 3L ARMING LEVER PER AMM 25-60-00. - [SDR AALA202510103967](https://openairdocs.org/sdr/AALA202510103967), Oct 6, 2025: APU. ODOR. AIRCRAFT WAS GROUNDED: SOF EVENT AFTER TAKEOFF, THEN DISSIPATED MIC 1580902. MAINTENANCE DETERMINED APU WAS SOURCE OF ODOR AND REPLACED APU IAW J/C 26L31049003. - [SDR AALA202507031808](https://openairdocs.org/sdr/AALA202507031808), Jul 2, 2025: BATTERY. NO TEST. AIRCRAFT WAS GROUNDED: BATTERY FAULT DISPLAYED FOR EMERGENCY POWER SUPPLY UNIT 13WL DURING SYSTEM TEST. REPLACED BATTERY AND ACCOMPLISHED A SATISFACTORY OPERATI - [SDR AALA202507036506](https://openairdocs.org/sdr/AALA202507036506), Jul 2, 2025: BATTERY. NO TEST. AIRCRAFT WAS GROUNDED: BATTERY FAULT DISPLAYED FOR EMERGENCY POWER SUPPLY UNIT 12WL DURING SYSTEM TEST. REPLACED BATTERY AND ACCOMPLISHED A SATISFACTORY OPERATI - [SDR AALA202507036132](https://openairdocs.org/sdr/AALA202507036132), Jul 2, 2025: BATTERY. NO TEST. AIRCRAFT WAS GROUNDED: BATTERY FAULT DISPLAYED FOR EMERGENCY POWER SUPPLY UNIT 11WL DURING SYSTEM TEST. REPLACED BATTERY AND ACCOMPLISHED A SATISFACTORY OPERATI - [SDR AALA202507022962](https://openairdocs.org/sdr/AALA202507022962), Jul 2, 2025: BATTERY. NO TEST. AIRCRAFT WAS GROUNDED: FORWARD LEFT SLIDE IS FAILING THE EMERGENCY POWER SUPPLY UNIT SYSTEM TEST. MAINTENANCE REPLACED THE L1 DOOR SLIDE ASSEMBLY PER TASK CARD - [SDR AALA202507023178](https://openairdocs.org/sdr/AALA202507023178), Jul 2, 2025: BATTERY. NO TEST. AIRCRAFT WAS GROUNDED: FORWARD LEFT SLIDE IS FAILING THE EMERGENCY POWER SUPPLY UNIT SYSTEM TEST. MAINTENANCE REPLACED THE L1 DOOR SLIDE ASSEMBLY PER TASK CARD - [SDR AALA202507029906](https://openairdocs.org/sdr/AALA202507029906), Jul 2, 2025: BATTERY. NO TEST. AIRCRAFT WAS GROUNDED: FORWARD LEFT SLIDE IS FAILING THE EMERGENCY POWER SUPPLY UNIT SYSTEM TEST. MAINTENANCE REPLACED THE L1 DOOR SLIDE ASSEMBLY PER TASK CARD - [SDR AALA202507027102](https://openairdocs.org/sdr/AALA202507027102), Jul 2, 2025: BATTERY. NO TEST. AIRCRAFT WAS GROUNDED: FORWARD LEFT SLIDE IS FAILING THE EMERGENCY POWER SUPPLY UNIT SYSTEM TEST. MAINTENANCE REPLACED THE L1 DOOR SLIDE ASSEMBLY PER TASK CARD - [SDR AALA202507020810](https://openairdocs.org/sdr/AALA202507020810), Jul 2, 2025: POWER SUPPLY. NO TEST. AIRCRAFT WAS GROUNDED: FORWARD LEFT SLIDE IS FAILING THE EMERGENCY POWER SUPPLY UNIT SYSTEM TEST. MAINTENANCE REPLACED THE L1 DOOR SLIDE ASSEMBLY PER TASK CARD - [SDR AALA202507025869](https://openairdocs.org/sdr/AALA202507025869), Jul 2, 2025: SLIDE. NO TEST. AIRCRAFT WAS GROUNDED: FORWARD LEFT SLIDE IS FAILING THE EMERGENCY POWER SUPPLY UNIT SYSTEM TEST. MAINTENANCE REPLACED THE L1 DOOR SLIDE ASSEMBLY PER TASK CARD - [SDR AALA202506239210](https://openairdocs.org/sdr/AALA202506239210), Jun 21, 2025: POWER SUPPLY. NO TEST. AIRCRAFT WAS GROUNDED: FAULT MESSAGE DISPLAYED FOR EMERGENCY POWER SUPPLY UNIT 10WL DURING SYSTEM TEST. REPLACED EMERGENCY POWER SUPPLY UNIT AND ACCOMPLISHED A - [SDR AALA202505194314](https://openairdocs.org/sdr/AALA202505194314), May 16, 2025: LOCK. STICKING. AIRCRAFT WAS NOT GROUNDED: AFT RIGHT LAVATORY E SLIDER LOCK IS STICKING BADLY/NOT WORKING AND TRAPPING PASSENGERS INSIDE LAVATORY. MAINTENANCE LUBRICATED THE LA - [SDR AALA202408092506](https://openairdocs.org/sdr/AALA202408092506), Aug 8, 2024: CONTROL UNIT. FAULTED. AIRCRAFT WAS NOT GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT DIVERTED TO PHL DUE TO THE FLIGHT CREW REPORTING AN LGCIU #1 FAULT, THE FLIGHT CREW ACCOMP - [SDR AALA202407221587](https://openairdocs.org/sdr/AALA202407221587), Jul 20, 2024: HINGE ARM. WORN. AIRCRAFT IN BASE MAINTENANCE: VERTICAL STABILIZER #3 RUDDER HINGE ARM UPPER AND LOWER FASTENER HOLE #1 ARE OBLONGED / WORN AT VERTICAL STABILIZER STATION 228 AN - [SDR AALA202407221958](https://openairdocs.org/sdr/AALA202407221958), Jul 20, 2024: HINGE ARM. WORN. AIRCRAFT IN BASE MAINTENANCE: VERTICAL STABILIZER #4 RUDDER HINGE ARM FASTENER HOLE #3 IS OBLONGED / WORN AT VERTICAL STABILIZER STATION 263 AND RIB 6. REPLACED - [SDR AALA202406206154](https://openairdocs.org/sdr/AALA202406206154), Jun 19, 2024: LEVER. LOOSE. AIRCRAFT WAS NOT GROUNDED: DOOR 3L ARMING LEVER LOOSE. RESECURED L3 ARMING GRIP HANDLE PER AMM 52-22-22. - [SDR AALA202406102490](https://openairdocs.org/sdr/AALA202406102490), Jun 7, 2024: WIRE. DAMAGED. AIRCRAFT WAS NOT GROUNDED: UPON INSTALLATION OF THE TEMPERATURE SIMULATION DEVICES FOUND EMERGENCY LIGHT AT TEMPERATURE SENSOR 23HK WIRING TO BE DAMAGED AND DET - [SDR AALA202406033284](https://openairdocs.org/sdr/AALA202406033284), May 31, 2024: FITTING. LACK OF LUBE. AIRCRAFT WAS NOT GROUNDED: FLIGHT ATTENDANT REPORTED DOOR 1L ARMING HANDLE FEELS LIKE IT'S BINDING WHEN ARMING AND DISARMING. CLEANED AND LUBED L1 DOOR GIRT BAR - [SDR AALA2024051609862](https://openairdocs.org/sdr/AALA2024051609862), May 7, 2024: SLIDE. WARNING MESSAGE. AIRCRAFT WAS GROUNDED: EMERGENCY POWER SUPPLY UNIT 10WL FAULT MESSAGE DISPLAYED DURING SYSTEM TEST. MAINTENANCE REPLACED THE R1 DOOR SLIDE AND ACCCOMPLISHED A S - [SDR AALA202405139862](https://openairdocs.org/sdr/AALA202405139862), May 7, 2024: POWER SUPPLY. FAULTED. AIRCRAFT WAS GROUNDED: EMERGENCY POWER SUPPLY UNIT 10WL FAULT MESSAGE DISPLAYED DURING SYSTEM TEST. (OPEN) - [SDR AALA202405101192](https://openairdocs.org/sdr/AALA202405101192), May 7, 2024: POWER SUPPLY. DEFECTIVE. AIRCRAFT WAS GROUNDED: NUMEROUS EMERGENCY LIGHTS IN CABIN ARE FLICKING. CEILING, SEAT ISLE AND DOOR EXIT LIGHTS. REPLACED EMERGENCY POWER SUPPLY UNIT 10WL (AALA - [SDR AALA202405101918](https://openairdocs.org/sdr/AALA202405101918), May 7, 2024: LIGHT. DEFECTIVE. AIRCRAFT WAS GROUNDED: NUMEROUS EMERGENCY LIGHTS IN CABIN ARE FLICKING. CEILING, SEAT ISLE AND DOOR EXIT LIGHTS. REPLACED EMERGENCY POWER SUPPLY UNIT 10WL (AALA - [SDR AALA202404011205](https://openairdocs.org/sdr/AALA202404011205), Mar 30, 2024: BATTERY. FAILED. AIRCRAFT WAS NOT GROUNDED: CIDS 1 FAILED EMERGENCY POWER SUPPLY UNIT SYSTEM. REPLACED L1 EMERGENCY POWER SUPPLY UNIT BATTERY. - [SDR AALA202403262736](https://openairdocs.org/sdr/AALA202403262736), Mar 24, 2024: SOLENOID. FAULTED. AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO CLT. ON TAKEOFF ENGINES STABILIZED AT 1.05. WHEN FLEX THRUST, WAS APPLIED NUMBER 1 - [SDR AALA202403269219](https://openairdocs.org/sdr/AALA202403269219), Mar 24, 2024: EEC. FAULTED. AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO CLT. ON TAKEOFF ENGINES STABILIZED AT 1.05. WHEN FLEX THRUST, WAS APPLIED NUMBER 1 - [SDR AALA202208232549](https://openairdocs.org/sdr/AALA202208232549), Jul 27, 2022: ACTUATOR. NONE. AIRCRAFT WAS GROUNDED: DURING CLIMB AND CRUISE, TWICE THE AIRCRAFT HAD AN ABRUPT YAW TO THE LEFT AIRCRAFT ON AUTOPILOT #1. **SUPPLEMENTAL REPORT FOR AALA2022072 - [SDR AALA202208233799](https://openairdocs.org/sdr/AALA202208233799), Jul 27, 2022: ACTUATOR. NONE. AIRCRAFT WAS GROUNDED: DURING CLIMB AND CRUISE, TWICE THE AIRCRAFT HAD AN ABRUPT YAW TO THE LEFT AIRCRAFT ON AUTOPILOT #1. **ORIGINAL REPORT WAS AALA20220729254 - [SDR AALA202208235283](https://openairdocs.org/sdr/AALA202208235283), Jul 27, 2022: COMPUTER. NONE. AIRCRAFT WAS GROUNDED: DURING CLIMB AND CRUISE, TWICE THE AIRCRAFT HAD AN ABRUPT YAW TO THE LEFT AIRCRAFT ON AUTOPILOT #1. **ORIGINAL REPORT WAS AALA20220729254 - [SDR AALA202207292549](https://openairdocs.org/sdr/AALA202207292549), Jul 27, 2022: NONE. NONE. AIRCRAFT WAS GROUNDED: DURING CLIMB AND CRUISE, TWICE THE AIRCRAFT HAD AN ABRUPT YAW TO THE LEFT AIRCRAFT ON AUTOPILOT #1. **SUPPLEMENTAL REPORT WILL BE SUBMITT - [SDR AALA202203187644](https://openairdocs.org/sdr/AALA202203187644), Mar 16, 2022: CONTAINER. INOPERATIVE. AIRCRAFT WAS NOT GROUNDED: OXYGEN PANEL OVER SEATS 30 ABC DOES NOT OPERATE WHEN TESTED. REPLACED EMERGENCY OXYGEN CONTAINER AND ACCOMPLISHED A SATISFACTORY OPER - [SDR AALA202202099275](https://openairdocs.org/sdr/AALA202202099275), Feb 6, 2022: CHECK VALVE. UNSERVICEABLE. AIRCRAFT WAS GROUNDED: YELLOW HYDRAULIC SYSTEM RESERVOIR OVERHEAT ECAM DURING CLIMB. FLIGHT DECLARED AN EMERGENCY AND RETURNED TO DFW, LANDING SAFELY. **ADDITIO - [SDR AALA202202092812](https://openairdocs.org/sdr/AALA202202092812), Feb 6, 2022: PUMP. OVERHEATED. AIRCRAFT WAS GROUNDED: YELLOW HYDRAULIC SYSTEM RESERVOIR OVERHEAT ECAM DURING CLIMB. FLIGHT DECLARED AN EMERGENCY AND RETURNED TO DFW, LANDING SAFELY. **ADDITIO - [SDR AALA202202082812](https://openairdocs.org/sdr/AALA202202082812), Feb 6, 2022: PUMP. OVERHEATED. AIRCRAFT WAS GROUNDED: YELLOW HYDRAULIC SYSTEM RESERVOIR OVERHEAT ECAM DURING CLIMB. FLIGHT DECLARED AN EMERGENCY AND RETURNED TO DFW, LANDING SAFELY. **SUPPLEM - [SDR AALA202202072812](https://openairdocs.org/sdr/AALA202202072812), Feb 6, 2022: NONE. NONE. AIRCRAFT WAS GROUNDED: YELLOW HYDRAULIC SYSTEM RESERVOIR OVERHEAT ECAM DURING CLIMB. FLIGHT DECLARED AN EMERGENCY AND RETURNED TO DFW, LANDING SAFELY. **SUPPLEM - [SDR AALA202112272575](https://openairdocs.org/sdr/AALA202112272575), Dec 24, 2021: CONTROL VALVE. LEAKING. AIRCRAFT WAS GROUNDED: ON PUSH BACK AFTER ENG #2 START, SET PARKING BREAK AND LOST ALL PARK BRAKE AND ACCUMULATOR PRESSURE TURNED ON Y PUMP THEN OFF AND LOST BR - [SDR AALA202108188236](https://openairdocs.org/sdr/AALA202108188236), Aug 18, 2021: BATTERY PACK. DISCHARGED. AIRCRAFT WAS NOT GROUNDED: FORWARD EMERGENCY FLASHLIGHT SEAL BROKEN. REPLACED EMERGENCY FLASHLIGHT BATTERY AND TAMPER SEAL AS REQUIRED. - [SDR AALA202108021327](https://openairdocs.org/sdr/AALA202108021327), Jul 30, 2021: DIAPHRAGM. MISSING. AIRCRAFT WAS NOT GROUNDED: FORWARD LEFT NUMBER 1 PASSENGER DOOR EMERGENCY OPERATION CYLINDER IS MISSING A DIAPHRAGM. REPLACED FORWARD LEFT NUMBER 1 PASSENGER DO - [SDR AALA202105142266](https://openairdocs.org/sdr/AALA202105142266), May 13, 2021: POWER SUPPLY. FAULTED. AIRCRAFT IN BASE MAINTENANCE: EMERGENCY POWER SUPPLY UNIT 14WL IN PASSENGER CABIN FAULT. REPLACED POWER SUPPLY PER AMM 33-51-38-400-001-A . - [SDR AALA202105089012](https://openairdocs.org/sdr/AALA202105089012), May 7, 2021: SUPPORT ANGLE. CRACKED. AIRCRAFT IN BASE MAINTENANCE: CRACK HINGE ARM 4 ELEVATOR SUPPORT ANGLE RIGHT HORIZONTAL STABILIZER. INSTALLED NEW SUPPORT ANGLE LOCATED HINGE ARM 4 ELEVATOR RIG All 175: https://openairdocs.org/aircraft/N521UW/reports.md ## STCs that may be installed (OpenAirDocs) (217, 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 (Airbus A321-231) - [STC ST03438NY](https://openairdocs.org/stc/ST03438NY): Installation of Adams Rite Lavatory Equipment. Delta Engineering Corporation - [STC ST12434AC](https://openairdocs.org/stc/ST12434AC): Replacement of the wing fuel tank access panel gasket. Aviation Devices & Electronic Components, LLC - [STC ST02714CH](https://openairdocs.org/stc/ST02714CH): Modify the aircraft interior to match standard passenger configurations. Atin OOH LLC - [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 ST04493NY](https://openairdocs.org/stc/ST04493NY): Conversion of Passenger to Freighter configuration by installing a large Main Deck Cargo Door and Frame Shell Structure, Class "E" Cargo Compartment, Crew Entry Door and Surround Structure, Rigid Cargo Barrier, Floor reinforcements, and other associated modifications. ELBE Flugzeugwerke GmbH - [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 ST02228SE](https://openairdocs.org/stc/ST02228SE): Installation of Bin NuLook. Safran Cabin, Inc - [STC ST04474NY](https://openairdocs.org/stc/ST04474NY): Activation of Wireless Local Area Network (WLAN) system. Jet Aviation AG - [STC ST04254NY](https://openairdocs.org/stc/ST04254NY): Installation of Viasat Satcom Software. ALOFT AeroArchitects - [STC ST03416NY](https://openairdocs.org/stc/ST03416NY): Installation of Intelsat Connectivity Antenna (with demod option). Delta Engineering Corporation - [STC ST02913NY](https://openairdocs.org/stc/ST02913NY): Installation of a Panasonic Avionics Corporation Global Communications Suite (GCS) and/or In-Flight Entertainment System. Delta Engineering Corporation - [STC ST01700AT-D](https://openairdocs.org/stc/ST01700AT-D): Installation of Airshow 420 System. AIRCRAFT RECONFIG TECHNOLOGIES, LLC. Lists A321 Series - [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 ST03741NY](https://openairdocs.org/stc/ST03741NY): Viasat KA SATCOM Antenna System Installation, approve configurations. ALOFT AeroArchitects - [STC ST03742NY](https://openairdocs.org/stc/ST03742NY): Viasat KA Cabin Distribution System Installation. ALOFT AeroArchitects - [STC ST00142NY](https://openairdocs.org/stc/ST00142NY): Cargo floorboard installation. American Airlines, Inc., Maintenance and Engineering (M&E) Division - [STC ST02890NY](https://openairdocs.org/stc/ST02890NY): Installation of a Panasonic Avionics Corporation Global Communications Suite Antenna. Delta Engineering Corporation - [STC ST04759NY](https://openairdocs.org/stc/ST04759NY): Installation of a single cockpit USB charger. Eirtech Aviation Services Inc - [STC ST02356LA](https://openairdocs.org/stc/ST02356LA): Installation of Inflight Warning Systems Fan Vibration Monitor Unit. Astronics Advanced Electronic Systems (AES) - [STC ST02699LA](https://openairdocs.org/stc/ST02699LA): Installation of Vogt Aero Nickel Cadmium Battery P/N 2758-LMVA or 2758-RMVA. Vogt Aero LLC - [STC ST03189CH](https://openairdocs.org/stc/ST03189CH): Installation of an advertisement container on the bottom of a seat back tray table. Atin OOH LLC - [STC ST04462CH](https://openairdocs.org/stc/ST04462CH): Installation of Row 44 Broadband Antenna System Provisions. Anuvu IFC Corporation - [STC ST04528CH](https://openairdocs.org/stc/ST04528CH): Installation of a broadband wireless internet system in accordance with Row 44 Master Data Index Listing, Document No. RWO100-0003-00, Revision IR, dated May 26, 2021 or later FAA approved revision. Anuvu IFC Corporation - [STC ST12229IB](https://openairdocs.org/stc/ST12229IB): Installation of Thinkom antenna on the top rear fuselage. EAD Aerospace Airworthiness T/A Eclipse Technics - [STC ST04288CH](https://openairdocs.org/stc/ST04288CH): Installation of an Automatic Dependent Surveillance Broadcast Out (ADS-B Out) Transponder System with Honeywell Integrated Multi-Mode Receiver (IMMR), Model Number IMMR 20.1 installed with TSO-C190 compliant GPS antenna. Amphenol Cable and Interconnect Technologies Inc - [STC ST00892LA](https://openairdocs.org/stc/ST00892LA): Installation of Emergency Vision Assurance System (EVAS). VisionSafe LLC - [STC ST04292CH](https://openairdocs.org/stc/ST04292CH): Installation of JADE SATCOM Antenna System Provisions. Amphenol Cable and Interconnect Technologies Inc - [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 ST01818LA](https://openairdocs.org/stc/ST01818LA): Installation of Forward RH Stowage. Safran Cabin Inc - [STC ST02561LA](https://openairdocs.org/stc/ST02561LA): C&D Zodiac, Inc. Interior Installations and Modifications per C&D Zodiac, Inc., Index List No. 945-1, Revision B, dated April 20, 2018, or later FAA approved revisions. Safran Cabin Inc - [STC ST02735LA](https://openairdocs.org/stc/ST02735LA): Installation of modular lower deck Cargo Loading System (CLS). Telair International - [STC ST03417NY](https://openairdocs.org/stc/ST03417NY): Installation with demod option of Intelsat Cabin Connectivity System. Delta Engineering Corporation - [STC ST04089NY](https://openairdocs.org/stc/ST04089NY): Installation of Cabin Seating. Delta Engineering Corporation - [STC ST04798NY](https://openairdocs.org/stc/ST04798NY): AAR Engineering Services Seat Re-pitch. Delta Engineering Corporation - [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 ST02612CH](https://openairdocs.org/stc/ST02612CH): Installation of AD Aerospace Cockpit Door Monitoring System. Amphenol Cable and Interconnect Technologies, Inc - [STC ST02626CH](https://openairdocs.org/stc/ST02626CH): Installation of ECS EZMount® mechanical mounting assemblies on lower frames of cockpit sliding windows. Amphenol Cable and Interconnect Technologies Inc - [STC ST03176NY](https://openairdocs.org/stc/ST03176NY): Installation of a Gogo ATG4 system. Amphenol Cable and Interconnect Technologies Inc - [STC ST04328CH](https://openairdocs.org/stc/ST04328CH): Installation and activation of the RAVE Wireless Broadband System. Amphenol Cable and Interconnect Technologies Inc - [STC ST04334CH](https://openairdocs.org/stc/ST04334CH): Installation and activation of an ARINC 791 SATCOM System. Amphenol Cable and Interconnect Technologies Inc - [STC ST04287CH](https://openairdocs.org/stc/ST04287CH): The Certification for Transmitting Portable Electronic Device (TPED). Amphenol Cable and Interconnect Technologies Inc - [STC ST11885IB](https://openairdocs.org/stc/ST11885IB): Structure Reinforcement Common Design for ARINC 791 Large Antenna Installation. Sabena Technics BGC - [STC ST11872IB](https://openairdocs.org/stc/ST11872IB): Installation of Iridium Antenna. Aerotec Concept - [STC ST04010NY](https://openairdocs.org/stc/ST04010NY): Installation of Reticulated Polyurethane Foam (RPF) For Center Fuel Tank Ignition Mitigation. AerSale Inc - [STC ST04470NY](https://openairdocs.org/stc/ST04470NY): Removal of Ka-band antenna and systems components. Lufthansa Technik AG - [STC ST00079IB](https://openairdocs.org/stc/ST00079IB): Integration of Halon-free Portable Fire Extinguisher HAFEX. UMLAUT ENGINEERING GMBH - [STC ST00215IB](https://openairdocs.org/stc/ST00215IB): Installation of saf-Tglo ECO Photoluminescent Aisle Path Marking Systems. STG AEROSPACE GERMANY GmbH - [STC ST01936WI](https://openairdocs.org/stc/ST01936WI): Installation of LED lights. AeroLED's Holdings LLC - [STC ST04351NY](https://openairdocs.org/stc/ST04351NY): Activation of Ka-Band Antenna. Lufthansa Technik AG All 217: https://openairdocs.org/aircraft/N521UW/stcs.md ## Related - Other Airbus A321-231 aircraft: https://openairdocs.org/model/airbus-a321-231/aircraft.md - The IAE V2533-A5 engine: https://openairdocs.org/engine/iae-v2533-a5.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.