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Aircraft record

N121161996 Boeing 757-224

Registration validUnclaimedSource: FAA, updated Oct 19, 2026

Safety record in brief:No NTSB accidents or incidents since 198229 ADs may apply72 service difficulty reports

Registration
Valid
expires Dec 31, 2029
Based in
Chicago, IL
owner city / state
Engine
RB-211 SERIES · 22,000 lb thrust
Rolls-Royc
Owners
1
since 2013
NTSB events
None
since 1982
ADs may apply
29
confirm with A&P
Service reports
72
since 1995

Registration

FAA Aircraft Registry · Oct 19, 2026
Registered owner
United Airlines INC
Owner type
Corporation
City, state
Chicago, IL
Certificate issued
Dec 31, 2013
Expires
Dec 31, 2029
Airworthiness
Standard · Transport
Airworthiness date
Mar 27, 1996

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
757-224
Year
1996
Serial number
27558
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
A05A03

Engine

Make and model
Rolls-Royc Rb-211 Series
Type
Turbo-fan
Power
22,000 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 – nowUnited Airlines INCChicago, IL · current
  2. 1939Parks Air College INCEast St. Louis, IL · different airframe: Stinson U S/N 9004

Individual owners are shown by city and state only.

Safety record

NTSB · Oct 15, 2026 · FAA ADs · Oct 18, 2026 · SDRs · Oct 16, 2026

NTSB events (0)

No NTSB accidents or incidents found for this airframe since 1982.

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 (757-224)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 (757-224)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 (757-224)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 (757-224)
2002-24-51Boeing Model 737-600, -700, -700C, -800, and -900 Series Airplanes; Model 747 Series…Jan 7, 2003Airframe (757-224)
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 (757-224)
2002-10-02Boeing Model 757 Series AirplanesJun 20, 2002Airframe (757-224)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 (757-224)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 (757-224)
2001-22-13Boeing Model 737-100, -200, -300, -400, and -500 Series Airplanes; and Model 747, 757…Dec 6, 2001Airframe (757-224)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 (757-224)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 (757-224)
2001-13-15Boeing Model 757 Series Airplanes Equipped with Rolls Royce EnginesAug 7, 2001Airframe (757-224)Only with: Equipped with Rolls Royce engines.
2001-10-14Boeing Model 737, 747, 757, 767, and 777 Series AirplanesJun 8, 2001Airframe (757-224)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 (757-224)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 (757-224)Serial numbers per Boeing Service Bulletin 757-27A0127, Revision 1, dated September 2, 1999
99-23-21Boeing Model 757 Series AirplanesDec 21, 1999Airframe (757-224)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 (757-224)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 (757-224)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 (757-224)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 (757-224)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 (757-224)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 (757-224)Only with: Equipped with Rolls Royce engines.
97-18-05Boeing Model 757 Series Airplanes Equipped With Pratt & Whitney EnginesSep 17, 1997Airframe (757-224)Only with: Equipped with Pratt & Whitney engines.
97-15-09Boeing Model 757 and 767 Series AirplanesAug 1, 1997Airframe (757-224)
97-09-06Boeing Model 757 Series AirplanesMay 15, 1997Airframe (757-224)
96-19-17Boeing Model 757 Series AirplanesOct 7, 1996Airframe (757-224)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 (757-224)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 (757-224)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 (72)

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.

  • Lights · bulb · no testMay 28, 2026

    EMERGENCY LIGHTS OP TEST WITH THE TEST SWITCH. SLIDE EMERGENCY LIGHT NEAR L2 DOOR INOPERATIVE. REMOVED AND REPLACED EMERGENCY LIGHT BULBS NEAR L2 DOOR IAW AMM 33-51-06. OPS CHECK GOOD.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Air conditioning and pressurization · filter · odorApr 1, 2026

    ACRID ODOR COMING FROM L PACK WHEN OPERATING. PLACED LEFT PACK SYSTEM INOP COMPLIED WITH MEL REQUESTS TOMC APPROVAL INSPECTED NO ODOR ON RIGHT PACK . ISOLATED. LEFT PACK NEEDS TO REPLACED RECCESS FILTER INSPECTED BOTH PACK BAYS. NO DISCREPANCIES NOTED. REPLACED BOTH LT & RT RECIRC FILTERS AS…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Flight controls · control handle · lack of lubeMar 2, 2026

    AFTER TAKE OFF, MOVING FLAP FROM 1 TO UP, THE FLAP HANDLE FELT STICKY AND TE FLAP DISAGREE ILLUMINATED. PERFORMED FSEU BITE FOUND FLAP DISAGREE FAULT ON FSEU 1. PLACED FLAPS IN NORMAL CONFIGURATION AND WHILE OPERATING FLAPS FOUND FLAP HANDLE IS HARD TO PLACE IN FLAP 0 POSITION. HANDLE SPRINGS…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
Show all 10 reports
  • Fire protection · smoke detector · false activationFeb 17, 2026

    LAVATORY SMOKE EICAS MSG ON DESCENT. NO VISIBLE SMOKE OR FIRE DEBRIEFED INBOUND CREW LAV CHIME CAME FROM AFT LEFT LAV(K) NO SMOKE OR ODOR NOTED FOUND LAV K TESTING NORMALLY. FOUND LAV M NOT TESTING REMOVED AND REPLACED LAV M TESTED IAW 26-14-00-735-001. OK TO CONTI UE

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Fire protection · smoke detector · false activationFeb 15, 2026

    AFT SMOKE DETECTOR SOUNDED ON APPROACH STATUS MSG IN COCKPIT, WITH NO SIGN OF SMOKE OR ODOR. FA CALL CHIME SOUNDED CONCURRENTLY. DETECTOR AND CHIME STOPPED BEFORE LANDING FOUND 2 WIRES AT P15 PIN 5 AND 6, AT LAV SMOKE DETECTOR BROKE. REF WDM25-40-00-901 SHEET 3. REMOVED AND REPLACED AFT RIGHT LAV…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Fuselage · seat track · lack of lubeJan 30, 2026

    FIRST OFFICER SEAT DIFFICULT TO SLIDE ON TRACK. FROM 5 INDICATOR FORWARD SEAT NEEDS NON-NORMAL FORCE TO MOVE FORWARD. SEAT ALSO DIFFICULT TO MOVE IN THE TURN/CURVED PORTION OF THE TRACK. SPRAYED SEAT TRACK WITH FOOD GRADE LUBRICANT. OPS CHKD GOOD, SEAT MOVES FREELY.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Lights · elec connector · disconnectedJan 7, 2026

    FOUND RIGHT EMERGENCY OVER WING EXIT LIGHT AFT L562 INOP. (EXTERIOR) BULB, POWER SUPPLY CHARGER, AND BATTERY NO HELP. REF WDM 33-51-13. DURING TS FOUND RT AFT OVERWING EMERGENCY LIGHT DISCONNECTED BEHIND DADO PANEL. RESECURED CONNECTER, ALL EXTERIOR EMERGENCY LIGHTS OPERATE NORMAL AT THIS TIME…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Lights · light · brokenOct 20, 2025

    SEAT 32C EXIT ROW EMER LITE BROKEN RESECURED SEAT MOUNTED EMERGENCY LIGHT ASSY OPS CHECKS GOOD NO DEFECTS NOTED AT THIS TIME REF TASK 33-51-11

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Water and waste · lavatory · fullOct 11, 2025

    ACFT NEED LAV SERVICE LAVS WERE SERVICED, ALL LABES OPERATE NORMAL.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Water and waste · drain valve · faultedOct 9, 2025

    AFT LAV WILL NOT FLUSH LEFT AFT LAV WONT HOLD FLUID, FLUSHED SYSTEM NO HELP. REPLACED TOILET TANK DRAIN VALVE. REF TASK 38-32-02-004-001, TASK 38-32-02-404-012. LEAK CHECK GOOD. OPS CHECK GOOD.

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

Showing the 10 most recent of 72 reports.

Related aircraft

Show all 8 related aircraft
All 40 registered Boeing 757-224 aircraft

Sources

  • FAA Aircraft RegistryRegistration, owner city and state, airframe, engineupdated Oct 19, 2026
  • NTSB accident and incident databaseAccidents and incidents since 1982updated Oct 15, 2026
  • FAA Airworthiness Directives (Federal Register)ADs published since 1998updated Oct 18, 2026
  • FAA Service Difficulty ReportsReports since 1995updated Oct 16, 2026

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