- Registered owner
- United Airlines Inc
- Location
- Chicago, IL
- Owner type
- Corporation
- Serial number
- 31662
- Year built
- 2010
- Type
- Fixed wing multi engine
- Engine
- Turbo-fan
- Airworthiness
- Standard, transport
- Airworthiness date
- August 13, 2010
- Certificate issued
- August 16, 2010
- Expires
- January 31, 2028
- Mode S code
- AACD50
From the FAA registry file of October 24, 2026. The registry lists only the engine series, so ADs for every CFM International CFM56-7B26/3 model are included below.
On this page
Airworthiness directives that may apply · 336
Matched by this aircraft’s airframe and engine models. Each AD’s applicability may narrow it by serial number, part number or equipment.
| 1968 | 1 |
|---|---|
| 1969 | 1 |
| 1970 | 4 |
| 1975 | 4 |
| 1976 | 3 |
| 1977 | 1 |
| 1978 | 1 |
| 1979 | 2 |
| 1980 | 3 |
| 1981 | 1 |
| 1982 | 2 |
| 1983 | 1 |
| 1984 | 2 |
| 1985 | 5 |
| 1986 | 5 |
| 1987 | 2 |
| 1988 | 8 |
| 1989 | 7 |
| 1990 | 12 |
| 1991 | 8 |
| 1992 | 8 |
| 1993 | 3 |
| 1994 | 1 |
| 1995 | 3 |
| 1996 | 2 |
| 1997 | 6 |
| 1998 | 4 |
| 1999 | 9 |
| 2000 | 9 |
| 2001 | 19 |
| 2002 | 10 |
| 2003 | 8 |
| 2004 | 9 |
| 2005 | 13 |
| 2006 | 10 |
| 2007 | 13 |
| 2008 | 17 |
| 2009 | 8 |
| 2010 | 15 |
| 2011 | 11 |
| 2012 | 7 |
| 2013 | 18 |
| 2014 | 13 |
| 2015 | 7 |
| 2016 | 9 |
| 2017 | 7 |
| 2018 | 8 |
| 2019 | 14 |
| 2020 | 7 |
| 2021 | 12 |
| 2022 | 9 |
| 2023 | 9 |
| 2024 | 6 |
| 2025 | 9 |
| 2026 | 5 |
Airframe · Boeing 737-824
AD 2026-20-14StabilizersAD 2026-20-13Equipment/furnishingsAD 2026-13-13NavigationInformation bulletins that may apply · 19
Advisory, not mandatory.
See all 22 bulletins
NTSB investigations
No NTSB investigations matched to N79521Matched 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 737-824 aircraft
FAA incident reports
No FAA accident or incident reports matched to N79521Matched 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 737-824 aircraft
Service difficulty reports · 46
Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.
SDR CALA2025120911961Pump · faultyNUMBER 1 ENGINE N1 WOULD NOT INCREASE PAST 90. PERFORMED HIGH POWER ENGINES AT MAX POWER ENGINE 1 N1 - 91.5, FF - 8.60, EGT -769. ENGINE 2 N1 - 97.5 , FF - 10.69, EGT - 834. PERFORMED FIM TASK 73-05 TASK 808. PER STEPE(2)(B) WE HAVE A VALUE OF REGULATOR 3.SDR CALA2025102010292Light · no testEMERGENCY LIGHTING SYSTEM OPERATIONAL CHECK {B737-33-3-0235} - RED EMERGENCY LIGHT SEAT NUMBER 20C INOP RELAMPED EXISTING RED EMERGENCY LIGHT SEAT NUMBER 20C . OPS CHECK GOODSDR CALA2025092309161Smoke Detector · malfunctionedAFT LAVATORY SMOKE DETECTOR AND LIGHT CAME ON THEN OFF. NEITHER AFT LAVATORY FIRE EXTINGUISHER IS DISCHARGED. NEITHER AFT LAVATORY OVERTEMP LABEL INDICATES OVERTEMP. NEITHER LAV SMELLS OF SMOKE. BOTH AFT LAV SMOKE DETECTORS OPS CHECK GOOD IAW AMM 26-14-00
See all 46 reportsSTCs that may be installed · 786
Approved for this aircraft’s airframe or engine model. The registry doesn’t record which STCs an aircraft has; its records do.
See all 786 STCs