Skip to content
KnownTail
Aircraft record

N525UA1991 Boeing 757-222

DeregisteredUnclaimedSource: FAA, updated Oct 20, 2026

This N-number isn't registered right now. Below is its last known registration, canceled Feb 14, 2014.

Safety record in brief:1 NTSB accident (Apr 2007)29 ADs may apply106 service difficulty reports

Registration
Deregistered
Last based in
Chicago, IL
owner city / state
Owners
1
since 2013
NTSB events
1
2007
ADs may apply
29
confirm with A&P
Service reports
106
since 1995

Registration

FAA Aircraft Registry · Oct 20, 2026
Last registered owner
United Airlines INC
Owner type
Corporation
City, state
Chicago, IL
Certificate issued
Apr 1, 2013
Canceled
Feb 14, 2014
Airworthiness
Standard · Transport
Airworthiness date
Jan 15, 1991

We never show street addresses, even though they appear in the public FAA file. Individual owners are shown by city and state only.

Airframe & engine

FAA Registry + type data

Airframe

Manufacturer
Boeing
Model
757-222
Year
1991
Serial number
24978
Aircraft type
Fixed wing multi engine
Category
Land
Certification
Type Certificated
Seats
178
Engines
2
Max takeoff weight
20,000 and over lb
Mode S code
A69D44

Engine

Make and model
P & W Pw2040
Type
Turbo-fan
Power
40,900 lb thrust

Total time and engine hours aren't public. They appear here once the owner adds logbooks.

Ownership history

Ownership history from FAA records
  1. 2013 – 2014United Airlines INCChicago, IL

Individual owners are shown by city and state only.

Safety record

NTSB · Oct 15, 2026 · FAA ADs · Oct 20, 2026 · SDRs · Oct 16, 2026

NTSB events (1)

Accident

Apr 12, 2007 · Los Angeles, CA

The flight's encounter with a turbulence event that occurred while the flight attendants were unseated. Contributing to the accident was the apparent conflicting information provided by the flight deck to the flight attendants and the flight attendants' interpretation of that information.

Injuries
Serious
Report
LAX07LA127

From NTSB records; matched by serial number.Read NTSB report (search CAROL for LAX07LA127)

Accident history for this model

ADs published since 1998 that may apply (29)

These match the airframe or engine model. Whether each one applies, and whether it's been complied with, depends on serial numbers, equipment and logbook entries. Applicability must be confirmed by a mechanic against the aircraft's records.

ADSubjectEffectiveApplies to
2005-02-10Boeing Model 757 Series Airplanes Equipped With Rolls Royce Model RB211 EnginesMar 7, 2005Airframe (757-222)Certain serial numbers: 757 1–1018. Only with: Line numbers 1 through 1018 inclusive; equipped with Rolls Royce Model RB211 engines.
2004-12-07Boeing Model 757 Series Airplanes Equipped With Rolls Royce RB211 EnginesJul 21, 2004Airframe (757-222)Certain serial numbers: 757 1–735. Only with: Equipped with Rolls Royce RB211 engines; line numbers 1 through 735 inclusive.
2003-18-05Boeing Model 757 Series Airplanes Powered by Pratt & Whitney EnginesOct 16, 2003Airframe (757-222)Certain serial numbers: 757 1–735. Only with: Powered by Pratt & Whitney engines; line numbers 1 through 735 inclusive.
2003-14-08Boeing Model 737-600, 737-700, 737-700C, 737-800, 737-900, 757, and 767 Series AirplanesAug 18, 2003Airframe (757-222)
2002-24-51Boeing Model 737-600, -700, -700C, -800, and -900 Series Airplanes; Model 747 Series…Jan 7, 2003Airframe (757-222)
Show all 29 ADs
ADSubjectEffectiveApplies to
2002-19-52Boeing Model 737-600, -700, -700C, -800, and -900 Series Airplanes; Model 747 Series…Sep 30, 2002Airframe (757-222)
2002-10-02Boeing Model 757 Series AirplanesJun 20, 2002Airframe (757-222)Serial numbers per Boeing Service Bulletin 757-28-0057 or 757-28-0059, both Revision 1, dated February 28, 2002
2002-02-04Boeing Model 757 Series AirplanesMar 19, 2002Airframe (757-222)Serial numbers per Boeing Service Bulletins 757-29-0058 and 757-29-0059, both dated November 9, 2000
2001-23-14Boeing Model 757 Series AirplanesDec 31, 2001Airframe (757-222)
2001-22-13Boeing Model 737-100, -200, -300, -400, and -500 Series Airplanes; and Model 747, 757…Dec 6, 2001Airframe (757-222)Serial numbers per Boeing Service Bulletin 737-27A1214 Rev 1; Alert Service Bulletins 747-27A2373, 757-27A0129, 767-27A0159, 777-27A0030
2001-20-12Boeing Model 757 Series AirplanesNov 20, 2001Airframe (757-222)Certain serial numbers: 757 1–764. Only with: Limited to line numbers 1 through 764 inclusive.
2001-20-11Boeing Model 757 Series AirplanesNov 15, 2001Airframe (757-222)
2001-13-15Boeing Model 757 Series Airplanes Equipped with Rolls Royce EnginesAug 7, 2001Airframe (757-222)Only with: Equipped with Rolls Royce engines.
2001-10-14Boeing Model 737, 747, 757, 767, and 777 Series AirplanesJun 8, 2001Airframe (757-222)Serial numbers per Boeing Special Attention Service Bulletins 737-35-1076, 737-35-1077, 747-35-2111, 757-35-0021, 757-35-0022, 767-35-0043, 767-35-0044, 777-35-0008, all dated March 1, 2001. Only with: Equipped with chemical oxygen generators.
2000-15-16Boeing Model 737, 757, 767, and 777 Series AirplanesSep 12, 2000Airframe (757-222)Certain serial numbers: 737 1–2984; 757 1–798; 767 1–682; 777 1–083. Only with: Ranges are line numbers; equipped with Puritan-Bennett passenger and flight attendant oxygen masks as listed in Boeing Service Bulletins 737-35-1049, 757-35-0014, 767-35-0033, or 777-35-0005.
2000-04-18Boeing Model 757 Series AirplanesApr 4, 2000Airframe (757-222)Serial numbers per Boeing Service Bulletin 757-27A0127, Revision 1, dated September 2, 1999
99-23-21Boeing Model 757 Series AirplanesDec 21, 1999Airframe (757-222)Serial numbers per Boeing Service Bulletin 757-76-0009, Revision 1, dated December 3, 1998, or Boeing Service Bulletin 757-78-0012, dated August 31, 1989
99-10-14Boeing Model 747-400, 757, 767, and 777 Series Airplanes Equipped With AlliedSignal…Jun 17, 1999Airframe (757-222)Only with: Equipped with AlliedSignal RIA-35B Instrument Landing System (ILS) receivers, P/N 066-50006-0101.
98-26-04Boeing Model 757 Series AirplanesDec 31, 1998Airframe (757-222)Serial numbers per Boeing Alert Service Bulletin 757-28A0045, Revision 1, dated November 19, 1998
98-13-12 R1Boeing Model 737, 747, 757, 767, and 777 Series AirplanesDec 28, 1998Airframe (757-222)Serial numbers per Boeing Alert Service Bulletins 737-27A1212, 747-27A2368 Revision 2, 757-27A0128, 767-27A0156, 777-27A0029 Revision 1
98-13-12Boeing Model 737, 747, 757, 767, and 777 Series AirplanesJul 6, 1998Airframe (757-222)Serial numbers per Boeing Alert Service Bulletins 737-27A1212, 747-27A2368, 757-27A0128, 767-27A0156, and 777-27A0029, dated March 26, 1998
98-03-10Boeing Model 737, 747, 757, and 767 Series AirplanesFeb 19, 1998Airframe (757-222)Certain serial numbers: 737 1–2836; 747 1–1104; 757 1–731; 767 1–642. Only with: Equipped with non-powered IPECO pilots' seats; ranges are line position numbers.
97-18-04Boeing Model 757 Series Airplanes Equipped With Rolls Royce EnginesSep 17, 1997Airframe (757-222)Only with: Equipped with Rolls Royce engines.
97-18-05Boeing Model 757 Series Airplanes Equipped With Pratt & Whitney EnginesSep 17, 1997Airframe (757-222)Only with: Equipped with Pratt & Whitney engines.
97-15-09Boeing Model 757 and 767 Series AirplanesAug 1, 1997Airframe (757-222)
97-09-06Boeing Model 757 Series AirplanesMay 15, 1997Airframe (757-222)
96-19-17Boeing Model 757 Series AirplanesOct 7, 1996Airframe (757-222)Serial numbers per Boeing Alert Service Bulletin 757-24A0079, dated August 8, 1996
95-10-13Boeing Model 757 Series Airplanes Equipped With Rolls Royce EnginesJun 15, 1995Airframe (757-222)Serial numbers per Boeing Alert Service Bulletin 757-54A0030, Revision 1, dated December 20, 1993. Only with: Equipped with Rolls Royce engines.
95-01-05Boeing Model 757 Equipped With Pratt & Whitney Model PW2000 Series EnginesJan 20, 1995Airframe (757-222)Only with: Equipped with Pratt & Whitney Model PW2000 series engines.

AI-extracted — verify against original. Matched from each AD's applicability section; ADs replaced by a later AD are left out.

Service Difficulty Reports (106)

Reports of failures and defects that operators and repair stations sent to the FAA since 1995. A report describes one finding; it is not an accident.

  • Doors · seal · leakingJul 4, 2013

    CREW REPORTED DURING CLIMB AND INTO CRUISE R2 DOOR A SQUEALED. NOISE IS COMING FROM CENTER OF DOOR. SECURED LOOSE SEAL INTO TRACK, PRESSURIZED ACFT, NO LEAKS DETECTED ON GROUND. REMOVED SILL PLATES AT DOOR 2R REF AMM. FOUND SEALANT MISSING AT BOTH AREAS REF FIG 401. REINSTALLED SILL PLATES AT DOOR…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Doors · latch · out of adjustJul 1, 2013

    LOUD SQUEAL COMING FROM R2 DOOR. ACCOMPLISHED EXPOXY ALUMIMUM FILLED PASTE REPAIR AT INDICATED LOCATION OF SQUEAL. FOUND BLACK SOOT AT UPPER AFT LATCH CAM AREA AND DOOR FLUSH TOLERANCE LOW AT THAT AREA COMPARED TO OTHER 3 LATCH CAMS. ADJUSTED THE UPPER AFT LATCH CAM IAW MM 52-11-00.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Fuselage · support · corrodedMay 10, 2013

    MAIN CABIN BS 324 TO 345 RBL 61, DRAIN SUPPORT HAS CORROSION. FOUND TO BE OUT OF LIMITS IAW SRM. REMOVED AND REPLACED DRAIN SUPPORT IAW SRM 51-40-02 PAR 7D FIG 12.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
Show all 10 reports
  • Fuselage · support · corrodedMay 10, 2013

    R4 DOOR THRESHOLD HAS A FLOOR CLOSEOUT SUPPORT BETWEEN BS 1640 AND 1661 AND ABOUT RBL 60 CORRODED. REMOVED AND REPLACED R4 DOOR THRESHOLD CLOSEOUT SUPPORT CHANNEL. CORROSION FOUND TO BE OUT LIMITS IAW SRM 53-60-15 DTL VI FIG 101. INSTALLED CLOSE-OUT SUPPORT IAW SRM 51-40-02 PAR 7D FIG 12. MAJOR…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Fuselage · floor support · corrodedMay 1, 2013

    FLOOR SUPPORT BETWEEN BS 1620-1640, RBL 12 IS CORRODED. REMOVED AND REPLACED FLOOR SUPPORT IAW SRM 51-40-05 TABLE 1. MAJOR REPAIR.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Fuselage · floor support · corrodedMay 1, 2013

    FLOOR SUPPORT BS 1640 AND RBL 12 HAS CORROSION ON UPPER CORNER SURFACE. FOUND TO BE OUT OF LIMITS. REMOVED AND REPLACED FLOOR SUPPORT IAW SRM 51-40-02 PAR 7D FIG 12. MAJOR REPAIR.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Fuselage · floorbeam · corrodedMay 1, 2013

    BS 365 RBL 3 - 45 FLOORBEAM STRAP HAS CORROSION. REMOVED CORROSION IAW SRM 51-10-02 PAR 15 FIG 1. REPAIRED FLOORBEAM IAW EC RA 5310-05536 REPAIR 3 FIG 203.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Fuselage · floorbeam · corrodedMay 1, 2013

    BS 324 RBL 42 - 61 FLOORBEAM HAS CORROSION. REMOVED CORROSION IAW SRM 53-10-02 PAR 15 FIG 1. FOUND TO BE OUT OF LIMITS IAW SRM 53-10-08 FIG 101 DETAIL XI. REPAIRED FLOORBEAM IAW SRM 53-10-08 REPAIR 1 FIG 201. MAJOR REPAIR.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Fuselage · web · corrodedApr 30, 2013

    CORROSION ON MAIN CABIN AFT FLOOR WEB BS 1680 - 1689 RBL 53 - 58 WL 208 UPPER AND LOWER SURFACE. BLENDED CORROSION IAW SRM 53-60-51 FIG 1 SHEET 7 AND IS WITHIN LIMITS IAW SRM 53-60-51.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Fuselage · web · corrodedApr 29, 2013

    WEB BS 1685 RBL 58 IN THE AFT WET AREA IS CORRODED. BLENDED CORROSION IAW SRM 53-60-51 FIG 1. FOUND OUT OF LIMITS. INSTALLED REPAIR IAW ECRA 5330-04259. MAJOR REPAIR.

    From FAA Service Difficulty Reports; matched by N-number and serial number.

Showing the 10 most recent of 106 reports.

Sources

  • FAA Aircraft RegistryRegistration, owner city and state, airframe, engineupdated Oct 20, 2026
  • NTSB accident and incident databaseAccidents and incidents since 1982updated Oct 15, 2026
  • FAA Airworthiness Directives (Federal Register)ADs published since 1998updated Oct 20, 2026
  • FAA Service Difficulty ReportsReports since 1995updated Oct 16, 2026

Request owner name removalReport an error in this record