- Registered owner
- United Airlines Inc
- Location
- Chicago, IL
- Owner type
- Corporation
- Serial number
- 24322
- Year built
- 1989
- Type
- Fixed wing multi engine
- Engine
- Turbo-fan
- Airworthiness
- Standard, transport
- Airworthiness date
- June 30, 1989
- Certificate issued
- April 1, 2013
- Expires
- April 30, 2029
- Mode S code
- A11EA7
From the FAA registry file of October 24, 2026. The registry lists only the engine series, so ADs for every Pratt & Whitney PW4000 model are included below.
On this page
Airworthiness directives that may apply · 544
Matched by this aircraft’s airframe and engine models. Each AD’s applicability may narrow it by serial number, part number or equipment.
| 1970 | 2 |
|---|---|
| 1971 | 6 |
| 1972 | 1 |
| 1974 | 1 |
| 1975 | 8 |
| 1976 | 1 |
| 1977 | 1 |
| 1978 | 2 |
| 1979 | 3 |
| 1980 | 8 |
| 1981 | 3 |
| 1982 | 4 |
| 1983 | 6 |
| 1984 | 3 |
| 1985 | 3 |
| 1986 | 15 |
| 1987 | 12 |
| 1988 | 3 |
| 1989 | 13 |
| 1990 | 27 |
| 1991 | 23 |
| 1992 | 21 |
| 1993 | 15 |
| 1994 | 21 |
| 1995 | 11 |
| 1996 | 10 |
| 1997 | 7 |
| 1998 | 13 |
| 1999 | 22 |
| 2000 | 26 |
| 2001 | 27 |
| 2002 | 9 |
| 2003 | 23 |
| 2004 | 15 |
| 2005 | 18 |
| 2006 | 23 |
| 2007 | 21 |
| 2008 | 26 |
| 2009 | 15 |
| 2010 | 17 |
| 2011 | 14 |
| 2012 | 12 |
| 2013 | 16 |
| 2014 | 14 |
| 2015 | 9 |
| 2016 | 10 |
| 2017 | 10 |
| 2018 | 5 |
| 2019 | 1 |
| 2020 | 7 |
| 2021 | 7 |
| 2022 | 5 |
| 2023 | 11 |
| 2024 | 1 |
| 2025 | 6 |
| 2026 | 4 |
Airframe · Boeing 747-422
AD 2026-10-14Communications systemAD 2026-13-14NavigationAD 2026-13-02NavigationInformation bulletins that may apply · 11
Advisory, not mandatory.
Airframe · Boeing 747-422
SAIB AIR-20-18Flight Management Computing Software SystemSAIB NM-20-07Navigation - Glideslope SystemSAIB NM-18-33Engine Fuel and ControlSAIB NM-17-10Maintenance PracticesSAIB NM-15-03Flight ControlsSAIB NM-15-02Cabin Equipment/FurnishingsSAIB NM-12-40External Power System ConnectorSAIB NM-09-27Equipment/Furnishings: In-flight access to Class E cargo compartmentsSAIB NM-09-03Engine Fuel and Control - Implementing Fuel Tank System Airworthiness LimitationsSAIB NM-06-57Reports of damage to airplanes and to property on the ground caused by blue or clear ice falling from airplanes.SAIB ANM-99-29NTSB investigations
No NTSB investigations matched to N171UAMatched by N-number and event date, checked against the reported serial number, make and model. Investigations from before this aircraft carried the mark are under Earlier aircraft. Investigations on Boeing 747-422 aircraft
FAA incident reports
No FAA accident or incident reports matched to N171UAMatched by N-number and event date, checked against the reported make and model. Reports from before this aircraft carried the mark are under Earlier aircraft. Reports on Boeing 747-422 aircraft
Service difficulty reports · 293
Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.
SDR CALA2015102094602Battery Pack · dischargedPER A CHECK, SEAT EMERGENCY EXIT LIGHT FROM 45 RT - 53 RT, DIM. REPLACED BATTERY PACK DOOR 4L. OPERATIONS CHECKED GOOD.SDR CALA2015102094601Light · missingPER A CHECK, SEAT EMERGENCY EXIT LIGHT AT 45R, MISSING. REPLACED SEAT EMERGENCY EXIT LIGHT AT 45R. OPERATIONS CHECKED OK.SDR CALA2015102094600Light · inoperativePER A CHECK, MID GALLEY RT EMERGENCY EXIT LIGHT INOPERATIVE. RELAMPED & OPERATIONS CHECKED OK.
See all 293 reportsSTCs that may be installed · 699
Approved for this aircraft’s airframe or engine model. The registry doesn’t record which STCs an aircraft has; its records do.
Airframe · Boeing 747-422
STC ST12461IBInstallation of Cockpit Voice Recorder with optional RIPS UpgradeSTC ST00885LAInstallation of fire extinguisher cartridges as replacements for Pacific Scientific fire extinguisher cartridges in fire extinguisher bottles.STC ST02166SEInstallation of additional bunks in the Door 5 Overhead Crew Rest on
Boeing Model 747-400 series aircraft