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Aircraft record

N277241999 Boeing 737-724

Registration validUnclaimedSource: FAA, updated Oct 20, 2026

Safety record in brief:No NTSB accidents or incidents since 198221 ADs may apply112 service difficulty reports

Registration
Valid
expires Feb 28, 2033
Based in
Chicago, IL
owner city / state
Engine
CFM56 SERIES · 2200 hp
Cfm Intl.
Owners
1
since 2026
NTSB events
None
since 1982
ADs may apply
21
confirm with A&P
Service reports
112
since 1995

Registration

FAA Aircraft Registry · Oct 20, 2026
Registered owner
United Airlines INC
Owner type
Corporation
City, state
Chicago, IL
Certificate issued
Feb 5, 2026
Expires
Feb 28, 2033
Airworthiness
Standard · Transport
Airworthiness date
May 26, 1999

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
737-724
Year
1999
Serial number
28791
Aircraft type
Fixed wing multi engine
Category
Land
Certification
Type Certificated
Seats
149
Engines
2
Max takeoff weight
20,000 and over lb
Mode S code
A2C338

Engine

Make and model
Cfm Intl. Cfm56 Series
Type
Turbo-fan
Power
2200 hp

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

Ownership history

Ownership history from FAA records
  1. 2026 – nowUnited Airlines INCChicago, IL · current

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 (0)

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

Accident history for this model

ADs published since 1998 that may apply (21)

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
2019-14-02Hydraulic powerAug 27, 2019Airframe (737-724)
2002-20-07 R1Boeing Model 737 Series AirplanesNov 12, 2002Airframe (737-724)
2002-20-07Boeing Model 737 Series AirplanesNov 12, 2002Airframe (737-724)
2001-11-11Boeing Model 737, 747, and 777 Series AirplanesJul 16, 2001Airframe (737-724)Serial numbers per Boeing Service Bulletins 737-25-1371 Rev 2, 737-25-1407, 747-25-3196 Rev 1, 777-25-0111 Rev 1
2001-10-14Boeing Model 737, 747, 757, 767, and 777 Series AirplanesJun 8, 2001Airframe (737-724)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.
Show all 21 ADs
ADSubjectEffectiveApplies to
2001-08-24Boeing Model 737 Series AirplanesMay 10, 2001Airframe (737-724)
2000-22-02 R1Boeing Model 737 Series AirplanesNov 13, 2000Airframe (737-724)
2000-22-02Boeing Model 737 Series AirplanesNov 13, 2000Airframe (737-724)
2000-15-16Boeing Model 737, 757, 767, and 777 Series AirplanesSep 12, 2000Airframe (737-724)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.
99-11-05Boeing Model 737 Series AirplanesJun 28, 1999Airframe (737-724)
99-22-16Boeing Model 737 Series AirplanesDec 7, 1999Airframe (737-724)Serial numbers per Boeing Service Bulletin 737-52-1128, dated April 22, 1999, or Boeing Service Bulletin 737-52-1137, dated May 13, 1999
98-13-12 R1Boeing Model 737, 747, 757, 767, and 777 Series AirplanesDec 28, 1998Airframe (737-724)Serial numbers per Boeing Alert Service Bulletins 737-27A1212, 747-27A2368 Revision 2, 757-27A0128, 767-27A0156, 777-27A0029 Revision 1
98-22-10Boeing Model 737 Series AirplanesNov 12, 1998Airframe (737-724)Serial numbers per Boeing Service Bulletin 737-53A1108, Revision 5, dated October 26, 1989
98-18-20Boeing Model 727 and Model 737 Series Airplanes Equipped with J.C. Carter Company Fuel…Oct 21, 1998Airframe (737-724)Only with: Equipped with J.C. Carter Company fuel valve actuators P/N 40574-2 (Kearfott Models 3715-7 and -8) or 40574-5 (Kearfott Model 3715-9).
98-13-12Boeing Model 737, 747, 757, 767, and 777 Series AirplanesJul 6, 1998Airframe (737-724)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 (737-724)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.
97-22-07Boeing Model 737 Series AirplanesNov 12, 1997Airframe (737-724)Certain serial numbers: 737 292–2565. Only with: Limited to airplanes with line numbers 292 through 2565 inclusive.
97-18-06Boeing Model 737 Series AirplanesNov 12, 1997Airframe (737-724)
97-05-10Boeing Model 737 Series AirplanesMar 19, 1997Airframe (737-724)Only with: Having a main rudder power control unit (PCU) identified in Boeing Service Letter 737-SL-27-112-B, dated February 6, 1997.
97-04-01Boeing Model 737 Series AirplanesMar 21, 1997Airframe (737-724)Serial numbers per Boeing Service Bulletin 737-27-1155, dated October 26, 1989, as revised by Notices of Status Change 737-27-1155NSC1, NSC2, and NSC3
95-23-10Boeing Model 737 Series AirplanesDec 13, 1995Airframe (737-724)

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

Service Difficulty Reports (112)

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 · light · inoperativeSep 7, 2026

    SEAT 21ABC EMERGENCY PATHWAY LIGHT INOPERATIVE. REMOVED AND REPLACED 21ABC EMERGENCYPATHWAY LIGHT IAW AMM 33-51-11.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Lights · elec connector · disconnectedAug 22, 2026

    UPON EMERGENCY LIGHT TEST, LIGHT AT ROW 23CBA ON BULLNOSE NOT ILLUMINATING. REQUESTING MEL 3315A FOR BULLNOSE EMERGENCY LIGHT AT ROW23 ABC TOMC APPROVES MEL 3315A FOR BULLNOSE CEILING PANEL MOUNTED EMERGENCY LIGHT AT ROW 23ABC. DDP COMPLIED WITH..ONE STICKER IN FLIGHT DECK AND BULLNOSE AT 23ABC…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Lights · switch · faultedFeb 20, 2026

    EMERGENCY LIGHTS OPS CHK, CREW INDUCED FAULT. EMERGENCY LIGHTS STUCK ON. LOGIC IS OUT OF SEQUENCE IAW FIM 33-50, TASK 801, REMOVED & REPLACED PILOTS EMERGENCY EXIT LIGHT SWITCH S7 IAW WDM 33-51-11-. NO HELP, EXIT LIGHTS REMAIN ON WHEN SWITCH IS IN OFF. FOUND AFT ATTENDANT EMERGENCY LIGHT SWITCH…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
Show all 10 reports
  • Doors · warning light · false activationFeb 16, 2026

    FWD ENTRY DOOR LIGHT ILLUMINATED DURING TAKEOFF. EXTINGUISHED ON IT`S OWN ONCE AIRBORNE. PERFORMED TROUBLESHOOTING IAW FIM 52-10 TASK 801, NO DAMAGE FOUND TO FWD ENTRY DOOR SENSOR, TARGET, DOOR SWITCH OR ADJACENT STRUCTURES. PSEU BITE TEST SHOWS NO EXISTING FAULTS. SENSOR S199 TESTED GOOD. FWD…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Air conditioning and pressurization · controller · faultedJan 30, 2026

    CREW ADVISES AUTO PRESS FAIL LIGHT CAME ON AFTER TAKE OFF & MANUAL WOULD NOT OPERATE CORRECTLY. ACP WIRE CHECKS BTWN CPC,CPM & OUTFLOW VALVE, NO DEFECTS FOUND IAW WDM 21-31-23 & WDM 2/1-31-22. R & R AFT OUTFLOW VALVE ASSY IAW AMM 21-31-03, STILL HAS AUTO FAIL LIGHT ON P5 PANEL. FOUND CPC 1 FAULT…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Air conditioning and pressurization · flapper valve · faultedOct 22, 2025

    DURING CONDITIONAL INSPECTIONAL FOR ODORS REF 05-51-26-800-801-C1, FOUND PC AIR FLAPPER STUCK PARTIALLY OPEN SUPPLIED PRESSURE TO THE PNEUMATIC SYSTEM WITH THE APU, TASK 36-00-00-860-803, PC AIR FLAPPER CLOSES NORMALLY AND DOES NOT LEAK. PC AIR FLAPPER IS NOT THE SOURCE OF THE ODOR.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Air conditioning and pressurization · unknown · odorOct 22, 2025

    REPLACE RECIRC FILTERS DUE TO ODOR EVENT REPLACED RECIRC FILTER IAW AMM 21-25-01. NO DEFECTS NOTED. FA AND PAX SMELLED SOMETHING LIKE BURNING RUBBER APPEARED TO BE STRONGER IN AFT CABIN. DEBRIEFED CREW. CREW STATED INITIALLY SMELLED BURNING RUBBER SMELL IN FLT DECK & THEN AFTER COUPLE MINS IN AFT…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Air conditioning and pressurization · unknown · odorOct 19, 2025

    FA AND PAX SMELLED SOMETHING LIKE BURNING RUBBER APPEARED TO BE STRONGER IN AFT CABIN DEBRIEFED THE CREW. CREW STATED THAT INITIALLY SMELLED BURNING RUBBER SMELL IN FLIGHT DECK AND THEN AFTER COUPLE MINUTES IN THE AFT GALLEY AFTER TAKE-OFF. ENGINE BLEEDS WERE OFF DUE TO MEL. ONLY APU BLEED WAS ON…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Lights · housing · brokenSep 8, 2025

    ROW 21 ABC EPL HOUSING MOUNTING TAB IS BROKEN. REMOVED AND REPLACED EPL HOUSING REF. IFM 25-22-59. PROXIMITY LIGHTS OPS CHECKED GOOD IAW 737 AMM 33-51-11.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Engine · engine · vibrationJan 24, 2025

    AT 2000 FT ENG 2 SHOOK N ENG INSRT JUMPED AROUND. 20 SECS LTR EN G 2 SHOOK AGAIN W ENG FAIL UPON INSPECTION, NOTED A BURNT SMELL TOWARDS THE TAIL OF #2 ENGINE. FOUND N1 SPINNING NORMALLY WITH NO UNUSUAL RESISTANCE. TAIL EXHAUST SECTION SPUN NORMALLY HOWEVER NOTED METALLIC DEBRI IN EXHAUST SECTION.…

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

Showing the 10 most recent of 112 reports.

Related aircraft

Show all 8 related aircraft
All 36 registered Boeing 737-724 aircraft

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

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