# N171UA: 1989 Boeing 747-422

- Status: Valid registration
- Airframe: [Boeing 747-422](https://openairdocs.org/model/boeing-747-422) (registry code 1384935, 495 seats)
- Engine: [Pratt & Whitney PW4000 series](https://openairdocs.org/engine/pratt-whitney-pw4000-series) (registry code 52119)
- Data sheets: [TCDS A20WE](https://openairdocs.org/tcds/A20WE) (The Boeing Company) (OpenAirDocs)
- Serial number: 24322
- Year built: 1989
- Type: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: June 30, 1989
- Certificate issued: April 1, 2013
- Expires: April 30, 2029
- Mode S code: A11EA7
- 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=171UA
- Page: https://openairdocs.org/aircraft/N171UA

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. The registry lists only the engine series, so ADs for every Pratt & Whitney PW4000 model are included.

## ADs that may apply (OpenAirDocs): 544 in force

### Matched by airframe (Boeing 747-422)

- [AD 2026-10-14](https://openairdocs.org/ad/2026-10-14): Communications system · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 9 more. Effective Jul 6, 2026
- [AD 2026-13-14](https://openairdocs.org/ad/2026-13-14): Navigation · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 7 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 2026-08-06](https://openairdocs.org/ad/2026-08-06): Oxygen · Boeing 747-400 Series with STC ST01676SE or ST01706SE. Effective May 7, 2026
- [AD 2025-15-07](https://openairdocs.org/ad/2025-15-07): Equipment/furnishings · Boeing 747-8 Series, 747-8F Series, 747-200B Series and 6 more. Effective Aug 13, 2025
- [AD 2025-09-08](https://openairdocs.org/ad/2025-09-08): Stabilizers · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 11 more. Effective May 5, 2025
- [AD 2025-03-10](https://openairdocs.org/ad/2025-03-10): Water/waste · Boeing 747-400 Series, 747-400F Series, 747-8F Series and 1 more. Effective Mar 21, 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 2025-02-05](https://openairdocs.org/ad/2025-02-05): Landing gear · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 9 more. Effective Mar 17, 2025
- [AD 2024-19-01](https://openairdocs.org/ad/2024-19-01): Fuselage · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 9 more. Effective Nov 15, 2024
- [AD 2023-23-14](https://openairdocs.org/ad/2023-23-14): Fuel · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 11 more. Effective Dec 15, 2023
- [AD 2023-18-06](https://openairdocs.org/ad/2023-18-06): Wings · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 8 more. Effective Nov 7, 2023
- [AD 2023-12-14](https://openairdocs.org/ad/2023-12-14): Navigation · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 7 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 2023-07-09](https://openairdocs.org/ad/2023-07-09): Fuel · Boeing 747-400 Series and 747-8 Series. Effective May 1, 2023
- [AD 2023-03-20](https://openairdocs.org/ad/2023-03-20): Fuel · Boeing 747-400 Series, 747-400D Series and 747-400F Series. Effective May 1, 2023
- [AD 2023-03-15](https://openairdocs.org/ad/2023-03-15): Air conditioning · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 9 more. Effective Apr 14, 2023
- [AD 2022-24-15](https://openairdocs.org/ad/2022-24-15): Wings · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 11 more. Effective Jan 26, 2023
- [AD 2022-25-04](https://openairdocs.org/ad/2022-25-04): Equipment/Furnishings · Boeing 747-400 Series and 747-8 Series. Effective Jan 20, 2023
- [AD 2022-23-12](https://openairdocs.org/ad/2022-23-12): Wings · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 9 more. Effective Jan 4, 2023
- [AD 2022-15-07](https://openairdocs.org/ad/2022-15-07): Navigation · Boeing 747-400 Series. Effective Sep 15, 2022
- [AD 2022-13-18](https://openairdocs.org/ad/2022-13-18): Oxygen · Boeing 737-700 Series, 737-800 Series, 747-8 Series and 3 more. Effective Sep 15, 2022
- [AD 2022-10-11](https://openairdocs.org/ad/2022-10-11): Fuel, Wings · Boeing 747-100B SUD Series, 747-200B Series, 747-200C Series and 6 more. Effective Jul 11, 2022
- [AD 2021-26-10](https://openairdocs.org/ad/2021-26-10): Equipment/Furnishings · Boeing 747-400 Series, 747-400D Series and 747-400F Series. Effective Feb 22, 2022
- [AD 2021-17-06](https://openairdocs.org/ad/2021-17-06): Fuselage · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 9 more. Effective Oct 5, 2021
- [AD 2021-14-10](https://openairdocs.org/ad/2021-14-10): Equipment/furnishings · Boeing 747-400 Series, 747-400D Series and 747-400F Series. Effective Aug 19, 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 2021-06-10](https://openairdocs.org/ad/2021-06-10): Fuel · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 16 more. Effective Apr 28, 2021
- [AD 2020-21-16](https://openairdocs.org/ad/2020-21-16): Wings · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 9 more. Effective Jan 14, 2021
- [AD 2020-18-02](https://openairdocs.org/ad/2020-18-02): Fuel · Boeing 747-400 Series, 747-400D Series and 747-400F Series. Effective Nov 10, 2020
- [AD 2020-15-14](https://openairdocs.org/ad/2020-15-14): Fuselage · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 9 more. Effective Sep 3, 2020
- [AD 2020-14-02](https://openairdocs.org/ad/2020-14-02): Fuselage · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 9 more. Effective Jul 28, 2020
- [AD 2020-07-14](https://openairdocs.org/ad/2020-07-14): Fuel · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 9 more. Effective May 18, 2020
- [AD 2020-04-11](https://openairdocs.org/ad/2020-04-11): Fuselage · Boeing 747-400 Series. Effective Apr 13, 2020
- [AD 2019-19-02](https://openairdocs.org/ad/2019-19-02): Fuselage · Boeing 747-400 Series and 747-400F Series. Effective Nov 27, 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 2018-19-23](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 2018-16-06](https://openairdocs.org/ad/2018-16-06): Equipment/furnishings; 53, Fuselage · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 9 more. Effective Sep 12, 2018
- [AD 2018-09-12](https://openairdocs.org/ad/2018-09-12): Oxygen · Boeing 747-200B Series, 747-300 Series and 747-400 Series. Effective May 30, 2018
- [AD 2018-04-07](https://openairdocs.org/ad/2018-04-07): Fuselage; Nacelles/Pylons; Stabilizers; Wings · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 9 more. Effective Mar 30, 2018
- [AD 2017-22-10](https://openairdocs.org/ad/2017-22-10): Equipment/furnishings · Boeing 747-400 Series, 747-400F Series and 747-8F Series. Effective Dec 29, 2017
- [AD 2017-18-06](https://openairdocs.org/ad/2017-18-06): Wings · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 9 more. Effective Oct 5, 2017
- [AD 2017-09-10](https://openairdocs.org/ad/2017-09-10): Wings · Boeing 747-400 Series, 747-400D Series and 747-400F Series. Effective Jun 27, 2017
- [AD 2017-02-09](https://openairdocs.org/ad/2017-02-09): Fuselage · Boeing 747-400 Series, 747-400D Series and 747-400F Series. Effective Mar 17, 2017
- [AD 2017-02-04](https://openairdocs.org/ad/2017-02-04): Nacelles/pylons · Boeing 747-200B Series, 747-300 Series, 747-400 Series and 2 more. Effective Mar 14, 2017
- [AD 2016-26-07](https://openairdocs.org/ad/2016-26-07): Fuselage · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 9 more. Effective Feb 15, 2017
- [AD 2016-25-01](https://openairdocs.org/ad/2016-25-01): Auto flight · Boeing 747-400 Series, 747-400D Series, 747-400F Series and 8 more. Effective Jan 31, 2017
- [AD 2016-25-05](https://openairdocs.org/ad/2016-25-05): Stabilizers · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 9 more. Effective Jan 25, 2017
- [AD 2016-25-09](https://openairdocs.org/ad/2016-25-09): Fuselage · Boeing 747-400 Series, 747-400D Series and 747-400F Series. Effective Jan 17, 2017
- [AD 2016-19-12](https://openairdocs.org/ad/2016-19-12): Fuel · Boeing 747-400 Series, 747-400D Series and 747-400F Series. Effective Nov 14, 2016

### Matched by engine (Pratt & Whitney PW4000 series)

None in force.

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

- [AD 2025-01-08](https://openairdocs.org/ad/2025-01-08) (historical): Equipment/furnishings · Boeing 747-200B Series, 747-200C Series, 747-200F Series and 6 more. Effective Mar 19, 2025
- [AD 2022-27-07](https://openairdocs.org/ad/2022-27-07) (historical): Fuel · Boeing 747-400 Series and 747-8 Series. Effective Jan 13, 2023
- [AD 2022-06-16](https://openairdocs.org/ad/2022-06-16) (historical): Navigation · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 7 more. Effective Mar 16, 2022
- [AD 2021-07-09](https://openairdocs.org/ad/2021-07-09) (historical): Air conditioning · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 9 more. Effective May 12, 2021
- [AD 2021-02-15](https://openairdocs.org/ad/2021-02-15) (historical): Wings · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 8 more. Effective Mar 30, 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 2019-22-02](https://openairdocs.org/ad/2019-22-02) (historical): Equipment/ furnishings · Boeing 747-200B Series, 747-200C Series, 747-200F Series and 6 more. Effective Jan 16, 2020
- [AD 2017-18-05](https://openairdocs.org/ad/2017-18-05) (historical): Wings · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 9 more. Effective Oct 5, 2017
- [AD 2015-13-06](https://openairdocs.org/ad/2015-13-06) (historical): Fuselage · Boeing 747-400 Series and 747-400F Series. Effective Sep 1, 2015
- [AD 2014-07-01](https://openairdocs.org/ad/2014-07-01) (historical): Fuselage · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 9 more. Effective Jun 3, 2014
- [AD 2013-22-11](https://openairdocs.org/ad/2013-22-11) (historical): Fuselage · Boeing 747-400 Series and 747-400D Series. Effective Dec 10, 2013
- [AD 2013-23-03](https://openairdocs.org/ad/2013-23-03) (historical): Wings · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 8 more. Effective Nov 29, 2013
- [AD 2013-18-09](https://openairdocs.org/ad/2013-18-09) (historical): Communications · Airbus A300 B2-1A, A300 B2-1C, A300 B2-203 and 137 more. Effective Oct 3, 2013
- [AD 2013-14-05](https://openairdocs.org/ad/2013-14-05) (historical): Fuselage · Boeing 747-400 Series and 747-400F Series. Effective Aug 26, 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 2012-24-10](https://openairdocs.org/ad/2012-24-10) (historical): Air Conditioning · Boeing 747-400 Series and 747-400F Series. Effective Jan 16, 2013
- [AD 2012-22-02](https://openairdocs.org/ad/2012-22-02) (historical): Fuselage · Boeing 747-400 Series, 747-400D Series and 747-400F Series. Effective Dec 26, 2012
- [AD 2012-15-13](https://openairdocs.org/ad/2012-15-13) (historical): Fuselage · Boeing 747-100B SUD Series, 747-200B Series, 747-300 Series and 2 more. Effective Sep 12, 2012
- [AD 2012-05-03](https://openairdocs.org/ad/2012-05-03) (historical): Wings · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 9 more. Effective Apr 24, 2012
- [AD 2010-26-10](https://openairdocs.org/ad/2010-26-10) (historical): Fuselage · Boeing 747-200C Series, 747-200F Series, 747-400 Series and 2 more. Effective Feb 1, 2011
- [AD 2010-20-08](https://openairdocs.org/ad/2010-20-08) (historical): Fuselage · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 8 more. Effective Nov 9, 2010
- [AD 2009-21-10](https://openairdocs.org/ad/2009-21-10) (historical): Oxygen · Airbus A300, Model B4-605R, A300, Model B4-620, A300, Model B4-622 and 138 more. Effective Dec 17, 2009
- [AD 2009-22-08](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 2009-14-02](https://openairdocs.org/ad/2009-14-02) (historical): Vertical stabilizer seal and fuselage skin · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 9 more. Effective Aug 3, 2009
- [AD 2009-10-06](https://openairdocs.org/ad/2009-10-06) (historical): Air Transport Association (ATA) of America Code 27: Flight controls. · Boeing 747-400 Series and 747-400D Series. Effective Jun 9, 2009
- [AD 2009-06-02](https://openairdocs.org/ad/2009-06-02) (historical): Detect and correct cracks in the fuselage skin that can propagate and grow, resulting in a loss of structural integrity and a sudden decompression of the airplane during flight. · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 7 more. Effective Apr 20, 2009
- [AD 2008-10-06](https://openairdocs.org/ad/2008-10-06) (historical): Fuel tank systems · Boeing 747-400 Series, 747-400D Series and 747-400F Series. Effective Jun 12, 2008
- [AD 2008-08-25](https://openairdocs.org/ad/2008-08-25) (historical): Main equipment center · Boeing 747-400 Series and 747-400F Series. Effective May 27, 2008
- [AD 2007-23-18](https://openairdocs.org/ad/2007-23-18) (historical): Tension ties · Boeing 747-100B SUD Series, 747-200B Series, 747-300 Series and 2 more. Effective Nov 28, 2007
- [AD 2007-16-08](https://openairdocs.org/ad/2007-16-08) (historical): Cracking of the station 800 frame assembly · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 6 more. Effective Sep 13, 2007
- [AD 2007-15-10](https://openairdocs.org/ad/2007-15-10) (historical): No. 2 and No. 3 windows · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 9 more. Effective Sep 4, 2007
- [AD 2007-16-19](https://openairdocs.org/ad/2007-16-19) (historical): Aft tension tie channels at four station locations · Boeing 747-200B Series, 747-300 Series and 747-400 Series. Effective Aug 28, 2007
- [AD 2007-07-03](https://openairdocs.org/ad/2007-07-03) (historical): Trim air diffuser ducts or sidewall riser duct assemblies · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 9 more. Effective May 2, 2007
- [AD 2006-22-15](https://openairdocs.org/ad/2006-22-15) (historical): Nose wheel well (NWW) · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 9 more. Effective Dec 11, 2006
- [AD 2006-18-17](https://openairdocs.org/ad/2006-18-17) (historical): Yaw damper actuator portion of the upper and lower rudder power control modules (PCMs) · Boeing 747-400 Series, 747-400D Series and 747-400F Series. Effective Oct 13, 2006
- [AD 2006-12-12](https://openairdocs.org/ad/2006-12-12) (historical): Station 800 frame assembly · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 6 more. Effective Jul 17, 2006
- [AD 2006-12-10](https://openairdocs.org/ad/2006-12-10) (historical): Support bracket of the crew oxygen cylinder · Boeing 747-400 Series. Effective Jul 17, 2006
- [AD 2006-10-04](https://openairdocs.org/ad/2006-10-04) (historical): Left and right longeron extension fittings · Boeing 747-200B Series, 747-200C Series, 747-200F Series and 3 more. Effective Jun 16, 2006
- [AD 2006-09-06](https://openairdocs.org/ad/2006-09-06) (historical): Lower lobe fuselage frames · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 5 more. Effective Jun 7, 2006
- [AD 2006-06-11](https://openairdocs.org/ad/2006-06-11) (historical): Fasteners in the tension ties · Boeing 747-100B SUD Series, 747-200B Series, 747-300 Series and 2 more. Effective Apr 26, 2006
- [AD 2006-05-09](https://openairdocs.org/ad/2006-05-09) (historical): Lap joints of the fuselage skin · Boeing 747-200C Series, 747-200F Series, 747-400 Series and 2 more. Effective Apr 13, 2006
- [AD 2006-05-06](https://openairdocs.org/ad/2006-05-06) (historical): Body station (BS) 2598 bulkhead · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 9 more. Effective Apr 13, 2006
- [AD 2006-05-02](https://openairdocs.org/ad/2006-05-02) (historical): Fuselage internal structure · Boeing 747-200C Series, 747-200F Series, 747-400 Series and 2 more. Effective Apr 6, 2006
- [AD 2005-16-06](https://openairdocs.org/ad/2005-16-06) (historical): Escape slides/rafts. · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 9 more. Effective Sep 13, 2005
- [AD 2005-15-08](https://openairdocs.org/ad/2005-15-08) (historical): Fuselage stringers · Boeing 747-100B Series, 747-200B Series, 747-300 Series and 2 more. Effective Aug 30, 2005
- [AD 2005-01-09](https://openairdocs.org/ad/2005-01-09) (historical): Frame Web and Inner Chords on Forward Edge Frame of Number 5 Main Entry Door Cutout · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 8 more. Effective Feb 11, 2005
- [AD 2003-23-01](https://openairdocs.org/ad/2003-23-01) (historical): Yaw damper actuator · Boeing 747-400 Series, 747-400D Series and 747-400F Series. Effective Dec 18, 2003
- [AD 2003-19-08](https://openairdocs.org/ad/2003-19-08) (historical): Discrepancies of Forward and Aft Sides of Body Station 2598 Bulkhead · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 9 more. Effective Oct 27, 2003
- [AD 2003-20-08](https://openairdocs.org/ad/2003-20-08) (historical): Shoulder restraint harness · Boeing 747-100B Series, 747-200B Series, 747-200C Series and 8 more. Effective Oct 21, 2003
- [AD 2003-13-09](https://openairdocs.org/ad/2003-13-09) (historical): Horizontal stabilizer and rear spar structure · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 9 more. Effective Jul 15, 2003

All 622: https://openairdocs.org/aircraft/N171UA/ads.md

## Information bulletins (advisory) (11 in force)

- [SAIB AIR-20-18](https://openairdocs.org/saib/AIR-20-18): Flight Management Computing Software System. Issued Nov 16, 2020
- [SAIB NM-20-07](https://openairdocs.org/saib/NM-20-07): Navigation - Glideslope System. Issued Apr 16, 2020
- [SAIB NM-18-33](https://openairdocs.org/saib/NM-18-33): Engine Fuel and Control. Issued Dec 17, 2018
- [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-15-02](https://openairdocs.org/saib/NM-15-02): Cabin Equipment/Furnishings. Issued Nov 6, 2014
- [SAIB NM-12-40](https://openairdocs.org/saib/NM-12-40): External Power System Connector. Issued Aug 3, 2012
- [SAIB NM-09-27](https://openairdocs.org/saib/NM-09-27): Equipment/Furnishings:  In-flight access to Class E cargo compartments. Issued May 12, 2009
- [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 ANM-99-29](https://openairdocs.org/saib/ANM-99-29): . Issued Jul 2, 1999

## NTSB investigations

None matched to N171UA.

## FAA accident and incident reports

None matched to N171UA.

## Service difficulty reports (293, 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 CALA2015102094602](https://openairdocs.org/sdr/CALA2015102094602), Oct 17, 2015: BATTERY PACK. DISCHARGED. PER A CHECK, SEAT EMERGENCY EXIT LIGHT FROM 45 RT - 53 RT, DIM. REPLACED BATTERY PACK DOOR 4L. OPERATIONS CHECKED GOOD.
- [SDR CALA2015102094601](https://openairdocs.org/sdr/CALA2015102094601), Oct 17, 2015: LIGHT. MISSING. PER A CHECK, SEAT EMERGENCY EXIT LIGHT AT 45R, MISSING. REPLACED SEAT EMERGENCY EXIT LIGHT AT 45R. OPERATIONS CHECKED OK.
- [SDR CALA2015102094600](https://openairdocs.org/sdr/CALA2015102094600), Oct 17, 2015: LIGHT. INOPERATIVE. PER A CHECK, MID GALLEY RT EMERGENCY EXIT LIGHT INOPERATIVE. RELAMPED & OPERATIONS CHECKED OK.
- [SDR CALA2015040793506](https://openairdocs.org/sdr/CALA2015040793506), Apr 6, 2015: CONNECTOR. DISCONNECTED. ROW 19 ABC ELECTRO LUMINESCENT EEL INOPERATIVE. FOUND CONNECTOR DISCONNECTED. SECURED CONNECTOR. OPERATIONS CHECKED OK.
- [SDR CALA2014110792669](https://openairdocs.org/sdr/CALA2014110792669), Nov 7, 2014: CABLE. DAMAGED. NUMBER 4 DOOR GALLEY SIDEWALL LT EMER LIGHT FOUND INOPERATIVE. REPLACED THE CABLE OF THE EMER LIGHT AT SEAT 45AC. OPERATIONS CHECKED GOOD IAW AMM 33-51-12 REV 1
- [SDR CALA2014110792668](https://openairdocs.org/sdr/CALA2014110792668), Nov 7, 2014: CONNECTOR. DISCONNECTED. SEAT NUMBER 45AC EMER LT FOUND INOPERATIVE. RECONNECTED THE CONNECTOR OF THE EMER LIGHT AT SEAT 45AC & TEST FOUND TO PASS IAW AMM 33-51-12 REV 170.
- [SDR CALA2014072291510](https://openairdocs.org/sdr/CALA2014072291510), Jul 19, 2014: WIRE. DAMAGED. ESCAPE PATH LIGHT INOPERATIVE AT ROW 45ABC. REPAIRED WIRING, LIGHTS CHECKED NORMAL.
- [SDR CALA2014061391276](https://openairdocs.org/sdr/CALA2014061391276), Jun 12, 2014: BATTERY. DISCHARGED. UPPER DECK LT DOOR UPPER EMER EXIT LIGHT IS INOPERATIVE. REPLACED BATTERY POWER PACK. OPERATIONS CHECK OK.
- [SDR CALA2014061391275](https://openairdocs.org/sdr/CALA2014061391275), Jun 11, 2014: LIGHT. INOPERATIVE. STAIRWAY EEL LIGHT IS INOPERATIVE. ORDERED EEL BATTERY, PCN 585-4495.
- [SDR CALA2013122693952](https://openairdocs.org/sdr/CALA2013122693952), Dec 25, 2013: CRADLE. BROKEN. PHONE CRADLE DOOR 4L IS BROKEN. REPAIRED CRADLE, SYS CHECKED GOOD.
- [SDR CALA2013121993814](https://openairdocs.org/sdr/CALA2013121993814), Dec 17, 2013: TRIM PANEL. BROKEN. ON CM8401 CHECK FOUND LAVATORY 102 AFT SIDE EMERGENCY EXIT LIGHTS TRIM BROKEN. SIDE TRIM REPLACED & CHECKED NORMAL.
- [SDR CALA2013121693692](https://openairdocs.org/sdr/CALA2013121693692), Dec 10, 2013: LUG. UNSECURE. IAW STANDBY POWER CHECK, AFT DOME LIGHT INOPERATIVE. WIRES DISCONNECTED FROM LIGHT ASSEMBLY L137. SECURED LUGS TO TERMINALS, OPERATIONS CHECKED OKAY.
- [SDR CALA2013112293195](https://openairdocs.org/sdr/CALA2013112293195), Nov 21, 2013: SEAT BELT. DEFECTIVE. POSITION 1 FLIGHT CREW BELT WILL NOT LOCK. CROTCH STRAP WILL NOT LOCK. REPLACED CROTCH CAPTAIN SEAT BELT, FUNCTION IS BACK TO NORMAL.
- [SDR CALA2013111993069](https://openairdocs.org/sdr/CALA2013111993069), Nov 19, 2013: SKIN. DAMAGED. RT FUSELAGE SKIN HAS EVIDENCE OF DAMAGE AT STATION 1980 NEAR BULK CARGO DOOR FWD EDGE APPROXIMATELY ONE FOOT UPWARD FROM FWD LOWER CORNER. CHECKED DAMAGE AREA N
- [SDR CALA2013111993068](https://openairdocs.org/sdr/CALA2013111993068), Nov 19, 2013: SKIN. DAMAGED. ACFT FWD CARGO DOOR AFT SIDE OF FUSELAGE DAMAGED APPROXIMATELY 36 IN FROM BOTTOM OF DOOR WAY, 1 1-2 INCHES WIDE BY 6 INCHES LONG. COMPLIED WITH ECRA 5321-01878.
- [SDR CALA2013111892979](https://openairdocs.org/sdr/CALA2013111892979), Nov 16, 2013: TRIPLER. CORRODED. RT FUSELAGE AT WASTE SYSTEM OVERBOARD VENT HOLE, TRIPLER HAS EXTERNAL CORROSION STATION 2090, STRINGER 35R TO STRINGER 36R. REMOVED DAMAGE PARTS & INSTALLED NEW
- [SDR CALA2013111892978](https://openairdocs.org/sdr/CALA2013111892978), Nov 16, 2013: FLOORBEAM. CORRODED. CABIN MAIN DECK FLOOR BEAM HAS CORROSION AT STATION 1660, LBL 11 TO LBL 33 ON UPPER CHORD. CUTOUT DAMAGED UPPER CHORD & INSTALLED NEW SECTION IAW SRM53-60-51, R
- [SDR CALA2013111892977](https://openairdocs.org/sdr/CALA2013111892977), Nov 16, 2013: FLOORBEAM. CORRODED. CABIN DECK FLOOR BEAM UPPER CORD HAS CORROSION AT STATION 1700, LBL 1". CUTOUT DAMAGE & INSTALLED NEW SECTION IAW SRM 53-60-51 RPR1 NR 0388763.
- [SDR CALA2013111592957](https://openairdocs.org/sdr/CALA2013111592957), Nov 15, 2013: FLOORBEAM. CORRODED. BS 1780 LBL 4 FLOOR BEAM CORROSION, REMOVED DAMAGE. HFEC MANUFACTURED & INSTALLED REPAIR PARTS IAW SRM 53-60-51 REPAIR 1.
- [SDR CALA2013101892177](https://openairdocs.org/sdr/CALA2013101892177), Oct 18, 2013: WIRE. DAMAGED. "STAB TRIM" STATUS MESSAGE DISPLAYED UPON T TRIMMING STAB NOSE UP WITH "ALTERNATE STAB TRIM SWITCHES" ON PEDESTAL. CMC SHOWS MESSAGE 27147. WITH NR 2 CUTOUT SW 
- [SDR CALA2013082990846](https://openairdocs.org/sdr/CALA2013082990846), Aug 27, 2013: CONTROL PANEL. FAULTY. WEATHER RADAR WILL NOT TEST. FOUND MESSAGE 34010. REPLACED WEATHER RADAR CONTROL PANEL, IAW FIM & AMM. SYSTEM CHECKED GOOD.
- [SDR CALA2013081690490](https://openairdocs.org/sdr/CALA2013081690490), Aug 15, 2013: SEAL. FAILED. NR 4 ENGINE IDG HAS BAD SEAL TO GEARBOX.
- [SDR CALA2013081290356](https://openairdocs.org/sdr/CALA2013081290356), Aug 12, 2013: STRUCTURE. CRACKED. FORWARD CARGO DOOR DENTED AND CRACKED 12" FROM AFT EDGE AND BOTTOM OF CARGO DOOR. IAW ECRA 5230-01927 NEED TO ACP PERMANENT SRM SKIN REPAIR WITHIN 3 A-C CYCLES 
- [SDR UALA2013071604979](https://openairdocs.org/sdr/UALA2013071604979), Jul 15, 2013: BATTERY. INOPERATIVE. SEAT 44 RT TO 53 RT, SEAT EMERGENCY LIGHT INOPERATIVE. REPLACED M6011 BATTERY. OPS CHECKED OK.
- [SDR UALA2013071604978](https://openairdocs.org/sdr/UALA2013071604978), Jul 15, 2013: LIGHT. UNKNOWN. REPLACED SEAT EMERGENCY LIGHT AT SEAT 19 RT. PERFORMED INSPECTION, NO DEFECTS FOUND.
- [SDR UALA2013071604977](https://openairdocs.org/sdr/UALA2013071604977), Jul 15, 2013: LIGHT. INOPERATIVE. DURING "A" CHECK, SEAT 25 LEFT, EMERGENCY LIGHT INOPERATIVE. REPLACED EMERGENCY LIGHT. OPS CHECKED OK. PERFORMED INSPECTION. NO DEFECTS FOUND.
- [SDR UALA2013071604976](https://openairdocs.org/sdr/UALA2013071604976), Jul 15, 2013: LIGHT. MISSING. DURING "A" CHECK, SEAT 19 RT, EMERGENCY LIGHT MISSING. REPLACED. OPS CHECKED OK.
- [SDR UALA2013071604975](https://openairdocs.org/sdr/UALA2013071604975), Jul 15, 2013: CONNECTOR. BROKEN. DURING "A" CHECK, SEAT 56 LEFT, EMERGENCY LIGHT INOPERATIVE. FOUND BROKEN CONNECTOR AT EMERGENCY LIGHT, REPLACED. OPS CHECKED OK. PERFORMED EMERGENCY LIGHT INSP
- [SDR UALA2013050203085](https://openairdocs.org/sdr/UALA2013050203085), May 2, 2013: LIGHT. INOPERATIVE. UPPER DECK SIDEWALL EEL STRIP ACROSS FROM SEATS 12JK INOP.
- [SDR UALA2013050203084](https://openairdocs.org/sdr/UALA2013050203084), May 2, 2013: LIGHT. INOPERATIVE. SEATS 48ABC EEL STRIP INOP. REPLACED EEL STRIP. OP'S CHECKED GOOD. ACCOMPLISHED IDT INSPECTION OF THE EEL STRIP REPLACEMENT, OPS CHECK GOOD.
- [SDR UALA2013050203083](https://openairdocs.org/sdr/UALA2013050203083), May 2, 2013: LIGHT. INOPERATIVE. DOOR 4L SLIDE LIGHT INOPERATIVE. REPLACED LIGHT ASSY OP'S CHECKED GOOD. ACCOMPLISHED IDT INSP OF THE EEL LIGHT ASSY, OPS CHECK GOOD.
- [SDR UALA2013050203082](https://openairdocs.org/sdr/UALA2013050203082), May 2, 2013: LIGHT. INOPERATIVE. UPPER DECK EXIT SIGN OVER STAIRS INOP. RELAMPED CHECKED GOOD. ACCOMPLISHED IDT INSP OF THE RELAMPING OF THE EEL LIGHT, OPS CHECK GOOD.
- [SDR UALA2013040202152](https://openairdocs.org/sdr/UALA2013040202152), Apr 1, 2013: LAMP. INOPERATIVE. UPPER DECK EMERGENCY DOOR LEFT GROUND MODE INDICATION LIGHT INOPERATIVE. RELAMPED EMERGENCY LIGHT.
- [SDR UALA2013040102065](https://openairdocs.org/sdr/UALA2013040102065), Mar 29, 2013: ANGLE. DAMAGED. RIGHT OUTBOARD BODY DOOR SEAL MISSING A PORTION. INSPECTION FOUND 2 INCHES OF FWD SEAL GAP ANGLE BROKEN. VISUAL INSPECTED DAMAGED ANGLE, SEAL AND ADJACENT AREA.
- [SDR UALA2013020800768](https://openairdocs.org/sdr/UALA2013020800768), Feb 7, 2013: FEEDER CABLE. DAMAGED. L4 GALLEY EMERGENCY LIGHT INOPERATIVE. REPAIRED FEEDER CABLE, OPS CHECKED OK.
- [SDR UALA2013020800767](https://openairdocs.org/sdr/UALA2013020800767), Feb 7, 2013: LIGHT. FAILED. R2 DOOR EMERGENCY SLIDE LIGHT INOPERATIVE. REPLACED LIGHT ASSY AND OP CHECKED GOOD.
- [SDR UALA2013020800766](https://openairdocs.org/sdr/UALA2013020800766), Feb 7, 2013: LIGHT. INOPERATIVE. ROW 33ABC SEAT EMERGENCY LIGHT INOPERATIVE. REPLACED LIGHT AND ACCOMPLISHED OPS TEST PER MM, TESTED GOOD.
- [SDR UALA2013012300399](https://openairdocs.org/sdr/UALA2013012300399), Jan 21, 2013: PUMP. LEAKING. FLIGHT LOST ALL NR 1 HYDRAULICS ABOUT 30 MINUTES OUT. FLIGHT RETURNED. EMERGENCY DECLARED. NR 1 HYD EDP FOUND HEAVY LEAKAGE. NR 1 ENG EDP REPLACED. TUBE REPAIRE
- [SDR UALA2013010200014](https://openairdocs.org/sdr/UALA2013010200014), Dec 31, 2012: SPOILER. DEPARTED. LEFT INBOARD SPOILER FELL OFF WHEN FLAPS EXTENDED. REMOVED AND REPLACED LEFT I/B SPOILER REF MM 27-62-01. PERFORMED GENERAL VISUAL INSPECTION OF LEFT AND RIGHT 
- [SDR UALA2012121907286](https://openairdocs.org/sdr/UALA2012121907286), Dec 17, 2012: POWER SUPPLY. FAULTY. EMERGENCY EXIT LIGHT FLOOR STRIP FLASHING INTERMIT BY SEATS 19, 20, 21 AND 22C. REPLACED EEL LIGHT ASSY AT SEAT 19C AND PWR SUPPLY M6003 ABOVE DOOR 2L. REF SSM 
- [SDR UALA2012121207164](https://openairdocs.org/sdr/UALA2012121207164), Dec 12, 2012: ROD. WORN. VIBRATION FROM MAIN GEAR RETRACTION REPORTED ON TAKEOFF. FLIGHT CREW WILL FILL OUT VIBRATION REPORT EVEN THOUGH EVERYTHING NORMAL IN FLT DECK CABIN ATTENDANT RE
- [SDR UALA2012112806808](https://openairdocs.org/sdr/UALA2012112806808), Nov 28, 2012: BALLAST. FAULTY. ELECTRICAL ODOR UPPER DECK STAIRWAY LIGHT. CHECKED FOUND THE ODOR IS FROM THE LIGHT L2976, REMOVED THE LIGHT L2976 AND DEACTIVATED BALLAST M7564, SO THE LIGHT L
- [SDR UALA2012120406968](https://openairdocs.org/sdr/UALA2012120406968), Nov 28, 2012: SOCKET. DEFECTIVE. ELECTRICAL ODOR UPPER DECK STAIRWAY LIGHT. CHECKED FOUND THE ODOR IS FROM THE LIGHT L2976, REMOVED THE LIGHT L2976 AND DEACTIVATED BALLAST M7564, SO THE LIGHT L
- [SDR UALA2012112606759](https://openairdocs.org/sdr/UALA2012112606759), Nov 26, 2012: CONNECTOR. NOT SEATED. EMERGENCY LIGHT STRIP AT 1L IS INOPERATIVE. UNABLE TO DUPLICATE PROBLEM, RESEAT CONNECTION, EEL SYSTEM TESTED NORMAL.
- [SDR UALA2012112606758](https://openairdocs.org/sdr/UALA2012112606758), Nov 26, 2012: CONNECTOR. NOT SEATED. EEL DOOR 2L FLICKERS UNABLE TO DUPLICATE PROBLEM. RESEAT CONNECTION, ALL CHECKS NORMAL.
- [SDR UALA2012102306066](https://openairdocs.org/sdr/UALA2012102306066), Oct 23, 2012: CABLE. UNSECURE. BEFORE PUSHBACK FLT ATTENDANT REPORT AFT GALLEY ONE PIGTAIL CABLE INOP. RE-SECURED CABLE OKAY.
- [SDR UALA2012100205576](https://openairdocs.org/sdr/UALA2012100205576), Oct 1, 2012: TRIM PANEL. DAMAGED. ON CM CHECK FOUND LAV 101 LEFT DOOR SIDE EEL PLASTIC TRIM LOWER DAMAGE. SIDE TRIM REPLACED.
- [SDR UALA2012100205577](https://openairdocs.org/sdr/UALA2012100205577), Sep 30, 2012: SEALANT. DISPLACED. FUEL LEAKING UNDER WING JUST OUTBOARD OF NR 2 ENGINE FWD PYLON, FUEL LEAK UNDER WING RUNNING TO FUSELAGE. FOUND FUEL LEAKING FROM UPPER OR 2ND FROM TOP BOLT ON 
- [SDR UALA2012093005538](https://openairdocs.org/sdr/UALA2012093005538), Sep 29, 2012: LIGHT. INOPERATIVE. DOOR 5L THRESHOLD EEL LIGHT INOP. RELAMPED, OP CHECKED OK.
- [SDR UALA2012093005539](https://openairdocs.org/sdr/UALA2012093005539), Sep 29, 2012: CONNECTOR. UNSECURE. ROW 19ABC EEL LIGHTS INOPERATIVE. SECURED UNDERSEAT PLUG, OP CHECKED OK.

All 293: https://openairdocs.org/aircraft/N171UA/reports.md

## STCs that may be installed (OpenAirDocs) (699, 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 747-422)

- [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 ST02166SE](https://openairdocs.org/stc/ST02166SE): Installation of additional bunks in the Door 5 Overhead Crew Rest on Boeing Model 747-400 series aircraft. 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 ST00437AT](https://openairdocs.org/stc/ST00437AT): Installation of Collins SAT-906 SATCOM System with Canadian- Marconi CMA-2102 Antenna System and Ball Airlink Low Gain Antenna. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST00552AT](https://openairdocs.org/stc/ST00552AT): Installation of a Collins SATCOM update from 900 SDU to 906 SDU. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST01859AT-D](https://openairdocs.org/stc/ST01859AT-D): Installation of a Collins CPL-920D H.F. Antenna coupler in a provisioned aircraft. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST01959AT-D](https://openairdocs.org/stc/ST01959AT-D): Installation of Ball Aerospace Camera entertainment system. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST02621AT-D](https://openairdocs.org/stc/ST02621AT-D): Installation In-flight Entertainment System provisions. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST03091AT-D](https://openairdocs.org/stc/ST03091AT-D): Interior reconfiguration. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST03092AT-D](https://openairdocs.org/stc/ST03092AT-D): Interior modification. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST03143AT-D](https://openairdocs.org/stc/ST03143AT-D): Installation of a Rockwell Collins AERO H+ SATCOM System. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST03419AT](https://openairdocs.org/stc/ST03419AT): Rockwell Collins SATCOM High Speed Transmitter Installation. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST03504AT-D](https://openairdocs.org/stc/ST03504AT-D): Interior reconfiguration. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST03556AT-D](https://openairdocs.org/stc/ST03556AT-D): Installation and Reactivation of a SATCOM System (Honeywell) and an ACARS System Upgrade (Rockwell Collins). AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST03821AT-D](https://openairdocs.org/stc/ST03821AT-D): Installation of a Panasonic eX2 In-Flight Entertainment System in a Boeing 747-400 aircraft. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST04378AT](https://openairdocs.org/stc/ST04378AT): VIP Cabin IFE / Communication systems upgrades. AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST04379AT](https://openairdocs.org/stc/ST04379AT): Installation of Gogo 2Ku WiFi System. 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 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 ST02927NY](https://openairdocs.org/stc/ST02927NY): Installation of a Panasonic Avionics Corporation Global Communications Suite Antenna. Delta Engineering Corporation
- [STC ST03047CH](https://openairdocs.org/stc/ST03047CH): Certification of Compatibility with Cellular and Wireless Data Technologies. Delta Engineering Corporation
- [STC ST03885AT](https://openairdocs.org/stc/ST03885AT): Installation of an Avionica, Inc. avCM Cellular Module. Aircraft Systems and Manufacturing Inc
- [STC SA3943NM](https://openairdocs.org/stc/SA3943NM): Installation of C&D interiors outboard bins and sidewall panels, stowage unit, class divider, super bin kit. Safran Cabin Inc
- [STC SA5799NM](https://openairdocs.org/stc/SA5799NM): Installation of a modular lavatory retrofit kit. Safran Cabin Inc
- [STC ST00484SE](https://openairdocs.org/stc/ST00484SE): Installation of interior retrofit kit. Safran Cabin Inc
- [STC ST00661SE](https://openairdocs.org/stc/ST00661SE): Installation of upper deck closets. Safran Cabin Inc
- [STC ST00734SE](https://openairdocs.org/stc/ST00734SE): Installation of interior retrofit kit. Safran Cabin Inc
- [STC ST00773SE](https://openairdocs.org/stc/ST00773SE): Installation of Upper Deck Overhead Stowage Bin Interior Retrofit. Safran Cabin Inc
- [STC ST00776SE](https://openairdocs.org/stc/ST00776SE): Installation of interior kits. Safran Cabin Inc
- [STC ST00799LA](https://openairdocs.org/stc/ST00799LA): Installation of a folding cart stowage unit and modifications. Safran Cabin Inc
- [STC ST00835SE](https://openairdocs.org/stc/ST00835SE): Installation of interior components. Safran Cabin Inc
- [STC ST00836SE](https://openairdocs.org/stc/ST00836SE): Installation of interior components and in-flight entertainment system. Safran Cabin Inc
- [STC ST00942SE](https://openairdocs.org/stc/ST00942SE): Installation of Airshow 420 News and Weather Information System kit. Safran Cabin Inc
- [STC ST01061SE](https://openairdocs.org/stc/ST01061SE): Installation of Airshow 420 News and Weather Information System. Safran Cabin Inc
- [STC ST01152SE](https://openairdocs.org/stc/ST01152SE): Installation Interior Components. Safran Cabin Inc
- [STC ST01315LA](https://openairdocs.org/stc/ST01315LA): Installation of a forward facing flight attendant seat. Safran Cabin Inc
- [STC ST01503SE](https://openairdocs.org/stc/ST01503SE): Installation of Interior components. Safran Cabin Inc
- [STC ST01507SE](https://openairdocs.org/stc/ST01507SE): Installation of interior components. Safran Cabin Inc
- [STC ST01523SE](https://openairdocs.org/stc/ST01523SE): Installation of interior components. Safran Cabin Inc
- [STC ST01532SE](https://openairdocs.org/stc/ST01532SE): Installation of interior components. Safran Cabin Inc
- [STC ST01533SE](https://openairdocs.org/stc/ST01533SE): Installation of interior components. Safran Cabin Inc
- [STC ST01554SE](https://openairdocs.org/stc/ST01554SE): Installation of interior components. Safran Cabin Inc
- [STC ST01622SE](https://openairdocs.org/stc/ST01622SE): Installation of interior components. Safran Cabin Inc
- [STC ST01780SE](https://openairdocs.org/stc/ST01780SE): Installation of interior components. Safran Cabin Inc
- [STC ST01880LA](https://openairdocs.org/stc/ST01880LA): Installation of pantry. Safran Cabin Inc
- [STC ST01986NY-D](https://openairdocs.org/stc/ST01986NY-D): Update of Panasonic Avionics Corporation System 3000 passenger entertainment system. Safran Cabin Inc

All 699: https://openairdocs.org/aircraft/N171UA/stcs.md

## Related

- Other Boeing 747-422 aircraft: https://openairdocs.org/model/boeing-747-422/aircraft.md
- The Pratt & Whitney PW4000 series engine: https://openairdocs.org/engine/pratt-whitney-pw4000-series.md

---
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