# N195UA: 1997 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: 26899 - Year built: 1997 - Type: Fixed wing multi engine - Engine type: Turbo-fan - Airworthiness: Standard, transport - Airworthiness date: May 22, 1997 - Certificate issued: April 1, 2013 - Expires: April 30, 2029 - Mode S code: A17C81 - 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=195UA - Page: https://openairdocs.org/aircraft/N195UA 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/N195UA/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 N195UA. ## FAA accident and incident reports (1) 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. - [Incident 20070805019679I](https://openairdocs.org/incident/20070805019679I), Aug 5, 2007: Boeing 747422 (N195UA), Washington, DC, Substantial damage. (-23) Aircraft was being towed from gate C-3 to gate C-27 for reposition of a revenue flight, when the #1 engine struck a heavy loader that was parked inside… ## Service difficulty reports (98, 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 2008UALA06282](https://openairdocs.org/sdr/2008UALA06282), Oct 27, 2008: O-RING. DEFECTIVE. LOW BOTTLE. LEAKING AROUND GAUGE ELBOW O-RING. REMOVED & REPLACED O-RING. - [SDR 2008UALA05984](https://openairdocs.org/sdr/2008UALA05984), Oct 4, 2008: LIGHT. DAMAGED. THE 47H EEL LIGHTS ARE DAMAGED. REPLACED EEL LAMP. OP CHECK NORMAL. - [SDR 2008UALA05948](https://openairdocs.org/sdr/2008UALA05948), Sep 30, 2008: BATTERY. DISCHARGED. EMERGENCY EXIT LIGHTS INOP ZONE E LEFT AND RIGHT CEILING. REPLACED BATTERY, OPS CHECKS NORMAL. - [SDR 2008UALA05947](https://openairdocs.org/sdr/2008UALA05947), Sep 30, 2008: BATTERY. DISCHARGED. EMERGENCY EXIT SIGN INOP JUST AFT OF LAV 102. REPLACED BATTERY, OPS CHECKS NORMAL. - [SDR 2008UALA05946](https://openairdocs.org/sdr/2008UALA05946), Sep 30, 2008: BATTERY. DISCHARGED. EMERGENCY EXIT SIGN INOP ABOVE ROW 22 RIGHT. REPLACED BATTERY. OPS CHECKS NORMAL. - [SDR 2008UALA05945](https://openairdocs.org/sdr/2008UALA05945), Sep 30, 2008: BATTERY. DISCHARGED. EMERGENCY EXIT LIGHTS INOP AT DOOR 2 RIGHT FWD AND AFT SILL LIGHTS. REPLACED BATTERY. OPS CHECKS NORMAL. - [SDR 2008UALA05944](https://openairdocs.org/sdr/2008UALA05944), Sep 30, 2008: BATTERY. DISCHARGED. EMERGENCY EXIT SIGN INOP AT TOP OF DOOR 2 RIGHT. REPLACED BATTERY, OPS CHECKS NORMAL. - [SDR 2008UALA05943](https://openairdocs.org/sdr/2008UALA05943), Sep 30, 2008: LIGHT. INOPERATIVE. EMERGENCY EXIT LIGHT INOP UPPER DECK CEILING AT ROW 17. REPLACED LAMP, OPS NORMAL. - [SDR 2008UALA05949](https://openairdocs.org/sdr/2008UALA05949), Sep 30, 2008: LAMP. INOPERATIVE. EMERGENCY EXIT LIGHT INOP AT DOOR 2 RIGHT BUSTLE LIGHT. REPLACED LIGHT ASSY, OPS CHECKS NORMAL. - [SDR 2008UALA04255](https://openairdocs.org/sdr/2008UALA04255), Aug 12, 2008: LAMP. INOPERATIVE. SEAT 47 HJK EMERGENCY LIGHT INOP. RELAMPED, CHECKS OKAY. - [SDR 2008UALA03655](https://openairdocs.org/sdr/2008UALA03655), Jul 1, 2008: LAMP. INOPERATIVE. EMERGENCY LIGHT ROW 53 LT INOP. FOUND BURNED OUT LAMP. REPLACED LAMP, OP CHECKED GOOD. AC OK FOR SERVICE. - [SDR 2008UALA03654](https://openairdocs.org/sdr/2008UALA03654), Jul 1, 2008: LAMP. INOPERATIVE. EMERGENCY LIGHT ROW 36 LT INOP. FOUND BURNED OUT LAMP. REPLACED LAMP, OP CHECKED GOOD. AC OK FOR SERVICE. - [SDR 2008UALA02978](https://openairdocs.org/sdr/2008UALA02978), May 22, 2008: MODULE. FAULTY. BEFORE DEPARTURE FOUND APU FIRE EXTINGUISHER SQUIB TEST INOP. SUSPECT SQUIB TEST MODULE SWITCH FAULTY. LUBRICATED SQUIB TEST SWITCHES AND OP CHECKED SQUIB TEST - [SDR 2008UALA02829](https://openairdocs.org/sdr/2008UALA02829), May 16, 2008: CONNECTOR. LOOSE. SEAT 5A EMERGENCY LIGHT INOPERATIVE. FOUND LOOSE CONNECTION. SECURED CONNECTION, OP CHECKED OK. AC OK FOR SERVICE. - [SDR 2008UALA02832](https://openairdocs.org/sdr/2008UALA02832), May 16, 2008: CONNECTOR. LOOSE. SEAT 4E EMERGENCY LIGHT INOP. FOUND LOOSE CONNECTION. SECURED CONNECTION OP CHECKED GOOD. AC OK FOR SERVICE. - [SDR 2008UALA02831](https://openairdocs.org/sdr/2008UALA02831), May 16, 2008: CONNECTOR. LOOSE. SEAT 4A EMERGENCY LIGHT INOP. FOUND LOOSE CONNECTION. SECURED CONNECTION OP CHECKED GOOD. AC OK FOR SERVICE. - [SDR 2008UALA02830](https://openairdocs.org/sdr/2008UALA02830), May 16, 2008: CONNECTOR. LOOSE. SEAT 5E EMERGENCY LIGHT INOP. FOUND LOOSE LIGHT CONNECTION. SECURED LIGHT ASSEMBLY. AC OK FOR SERVICE. - [SDR 2008UALA02828](https://openairdocs.org/sdr/2008UALA02828), May 16, 2008: LIGHT. INOPERATIVE. SEAT 33 ABC EMERGENCY LIGHT INOP. RELAMPED. CHECKS OKAY. - [SDR 2008UALA02690](https://openairdocs.org/sdr/2008UALA02690), May 9, 2008: LIGHT. DAMAGED. EEL LIGHT ASSY AT SEAT 34C TORN OFF. FOUND LIGHT ASSEMBLY DISLODGED. REPLACED LIGHT ASSEMBLY, OP CHECKED GOOD. AC OK FOR SERVICE. - [SDR 2008UALA02271](https://openairdocs.org/sdr/2008UALA02271), Apr 17, 2008: DOOR. OBSTRUCTED. DOOR 3R DIFFICULT TO CLOSE AND ARM. FOUND GIRT BAR FITTINGS CONTAMINATED WITH DEBRIS. REMOVED DEBRIS OPERATED DOOR AND LATCH SEVERAL TIMES DOOR OP CHECKED GOOD. - [SDR 2008UALA01209](https://openairdocs.org/sdr/2008UALA01209), Mar 5, 2008: LAMP. INOPERATIVE. FOUND SEAT 56 HJK EMERGENCY LIGHT IS INOP. RELAMPED. - [SDR 2008UALA01208](https://openairdocs.org/sdr/2008UALA01208), Mar 5, 2008: CONNECTOR. DISCONNECTED. FOUND SEAT 42 ABC EMERGENCY LIGHT IS INOP. RESECURED LOOSE CONNECTOR. - [SDR 2008UALA01207](https://openairdocs.org/sdr/2008UALA01207), Mar 5, 2008: LAMP. INOPERATIVE. SEAT 8GH FWD EMERGENCY LIGHT IS INOP. RELAMPED. - [SDR 2008UALA01206](https://openairdocs.org/sdr/2008UALA01206), Mar 5, 2008: LAMP. INOPERATIVE. FOUND SEAT 1A FWD EMERGENCY LIGHT IS INOP. RELAMPED. - [SDR 2008UALA00649](https://openairdocs.org/sdr/2008UALA00649), Feb 4, 2008: RESERVOIR. LOW PRESSURE. UPPER DECK, RIGHT HAND EXIT DOOR EMERGENCY RESERVIOR PRESSURE IN THE YELLOW BAND. SUSPECT FAULTY O-RING. REPLACED DOOR EMERGENCY POWER RESERVOIR PER 52-23-13 . - [SDR 2008UALA00580](https://openairdocs.org/sdr/2008UALA00580), Feb 1, 2008: FEEDER CABLE. DEFECTIVE. NEAR DOOR 3L LOWER SIDEWALL EMERGENCY LIGHT IS INOP. REPLACED FEEDER WIRE ASSY. - [SDR 2008UALA00579](https://openairdocs.org/sdr/2008UALA00579), Feb 1, 2008: LIGHT. INOPERATIVE. DOOR 2L CLOSET EMERGENCY LIGHT IS INOP. REPLACED ASSY. - [SDR 2008UALA00578](https://openairdocs.org/sdr/2008UALA00578), Feb 1, 2008: LIGHT. INOPERATIVE. UPPER DECK CEILING EMERGENCY LIGHT NEAR CEILING 16AB IS INOP. RELAMPED EMERGENCY LIGHT. - [SDR 2008UALA00577](https://openairdocs.org/sdr/2008UALA00577), Feb 1, 2008: LIGHT. INOPERATIVE. ZONE D LEFT SIDE CEILING EMERGENCY LIGHT IS INOP (2EA). RELAMPED EMERGENCY LIGHT. - [SDR 2008UALA00576](https://openairdocs.org/sdr/2008UALA00576), Feb 1, 2008: LIGHT. INOPERATIVE. DOOR 5 LEFT FWD SILL EMERGENCY LIGHT IS INOP. RELAMPED EMERGENCY LIGHT. - [SDR 2008UALA00575](https://openairdocs.org/sdr/2008UALA00575), Feb 1, 2008: LIGHT. INOPERATIVE. SEAT 3A FWD EMERGENCY LIGHT IS INOP. RELAMPED EMERGENCY LIGHT. - [SDR 2008UALA00023](https://openairdocs.org/sdr/2008UALA00023), Jan 1, 2008: FIRE LOOP. FAULTY. THE 'ENG 3 FIRE LP B' EICAS STATUS MSG DISPLAYED. ENG 3 FIRE LOOP-B FIRE OR FAULT OUTPUT. *S/D* FOUND HIGH RESISTANCE LOWER AFT FIRE LOOP AND SHORT IN HARNESS. - [SDR 2008UALA0023](https://openairdocs.org/sdr/2008UALA0023), Jan 1, 2008: FIRE LOOP. FAULTY. THE 'ENG 3 FIRE LP B' EICAS STATUS MSG DISPLAYED. ENG 3 FIRE LOOP-B FIRE OR FAULT OUTPUT. - [SDR 2007UALA05290](https://openairdocs.org/sdr/2007UALA05290), Dec 25, 2007: LIGHT. INOPERATIVE. EMERGENCY LIGHT ROW 4F INOPERATIVE. RESECURED LIGHT. - [SDR 2007UALA05289](https://openairdocs.org/sdr/2007UALA05289), Dec 25, 2007: LAMP. INOPERATIVE. EMERGENCY LIGHT INOPERATIVE AT ROWS 2J FWD, 46 ABC & 48 HJK ARE INOPERATIVE. RELAMPED. - [SDR 2007UALA05288](https://openairdocs.org/sdr/2007UALA05288), Dec 25, 2007: LAMP. INOPERATIVE. EMERGENCY CEILING LIGHT ABOVE ROW 12 INOP. RELAMPED. - [SDR 2007UALA04786](https://openairdocs.org/sdr/2007UALA04786), Nov 21, 2007: UNKNOWN. UNKNOWN. EMERGENCY DECLARED DUE TO NR 4 HYDRAULIC SYSTEM ISSUE. - [SDR 2007UALA04651](https://openairdocs.org/sdr/2007UALA04651), Nov 11, 2007: CONNECTOR. UNSECURE. DOOR 2L AFT EEL EXIT SIGN INOPERATIVE. SECURED LOOSE CONNECTOR. - [SDR 2007UALA04650](https://openairdocs.org/sdr/2007UALA04650), Nov 11, 2007: CONNECTOR. UNSECURE. ALL SEAT EEL INOP LEFT B-ZONE. SECURED LOOSE CONNECTOR. - [SDR 2007UALA04649](https://openairdocs.org/sdr/2007UALA04649), Nov 11, 2007: CONNECTOR. LOOSE. WALL EELS INOP AFT OF DR1L, FWD OF LAV 104 AND ON LT SIDE & AFT OF LAV 110 ARE INOPERATIVE. SECURED LOOSE CONNECTOR. - [SDR 2007UALA04648](https://openairdocs.org/sdr/2007UALA04648), Nov 11, 2007: LAMP. INOPERATIVE. DOOR 2R BOTH EMERGENCY EXIT SILL LIGHTS INOP. RELAMPED. - [SDR 2007UALA04520](https://openairdocs.org/sdr/2007UALA04520), Oct 31, 2007: LIGHT. MISSING. SEAT 4J AFT EEL STRIP MISSING. EEL STRIP REPLACED - [SDR 2007UALA04147](https://openairdocs.org/sdr/2007UALA04147), Oct 9, 2007: CONNECTOR. LOOSE. EXIT EEL SIGN INOP: DOOR 2L AFT SIDE. 11-01-07 SECURED LOOSE CONNECTION. EXIT LIGHT OP CHECKED OK FOR SERVICE. - [SDR 2007UALA04144](https://openairdocs.org/sdr/2007UALA04144), Oct 9, 2007: CONNECTOR. UNSECURE. ALL LEFT SEAT EEL INOP B-ZONE. 11-01-07 FOUND LOOSE CONNECTOR. SECURED CONNECTOR & EEL SYSTEM OP CHECKED OK FOR SERVICE. - [SDR 2007UALA04142](https://openairdocs.org/sdr/2007UALA04142), Oct 9, 2007: LIGHT. INOPERATIVE. WALL EEL INOP: LEFT SIDE MID LAV. 11-01-07 REPLACED WALL LAMP. - [SDR 2007UALA04141](https://openairdocs.org/sdr/2007UALA04141), Oct 9, 2007: LIGHT. INOPERATIVE. EMERGENCY LIGHT INOPERATIVE: CEILING ROWS 4R, 12 & 17. 11-01-07 REPLACED LAMP IN EACH POSITION. ALL OP CHECKED GOOD FOR RETURN TO SERVICE. - [SDR 2007UALA04140](https://openairdocs.org/sdr/2007UALA04140), Oct 9, 2007: LIGHT. INOPERATIVE. WALL EEL INOP: CLOSET FWD OF LAV 104, CROSS AISLE & LT SIDE OF LAV 110 & LT SIDE FWD GALLEY ACROSS FROM LAV 100. 11-01-07 SECURED LOOSE CONNECTIONS IN EACH POSI - [SDR 2007UALA03586](https://openairdocs.org/sdr/2007UALA03586), Sep 5, 2007: PSEU. FAILED. CMC MSG -R BODY GEAR DOWN ALTERNATE PROX SWITCH TARGET FAIL- (PSEU) ON 3 OF LAST 5 LEGS WITH HARD FAULTS. - [SDR 2007UALA03567](https://openairdocs.org/sdr/2007UALA03567), Sep 5, 2007: LIGHT. INOPERATIVE. EEL3J FWD & 33H ARE INOP. - [SDR 2007UALA03566](https://openairdocs.org/sdr/2007UALA03566), Sep 5, 2007: LIGHT. INOPERATIVE. EMERGENCY CEILING LIGHT INOP 5A. All 98: https://openairdocs.org/aircraft/N195UA/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/N195UA/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 --- 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.