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Aircraft record

N257051998 Boeing 737-724

Registration validUnclaimedSource: FAA, updated Oct 20, 2026

Safety record in brief:No NTSB accidents or incidents since 198221 ADs may apply111 service difficulty reports

Registration
Valid
expires Mar 31, 2030
Based in
Chicago, IL
owner city / state
Engine
UNKNOWN ENG
Ama/Expr
Owners
1
since 2017
NTSB events
None
since 1982
ADs may apply
21
confirm with A&P
Service reports
111
since 1995

Registration

FAA Aircraft Registry · Oct 20, 2026
Registered owner
United Airlines INC
Owner type
Corporation
City, state
Chicago, IL
Certificate issued
Mar 22, 2017
Expires
Mar 31, 2030
Airworthiness
Standard · Transport
Airworthiness date
May 12, 1998

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
1998
Serial number
28766
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
A273F5

Engine

Make and model
Ama/Expr Unknown Eng
Type
Turbo-fan

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

Ownership history

Ownership history from FAA records
  1. 2017 – nowUnited Airlines INCChicago, IL · current
  2. 1967 – 1978Individual ownerGreenville, TX · different airframe: 1939 Piper J4a S/N 4-812
  3. until 1990Individual ownerXxx, OK · different airframe: Piper Pa-38-112 S/N 3881a0058

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 (111)

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 · lamp · inoperativeOct 9, 2026

    LH SIDE EMERGENCY LIGHT ON FUSELAGE INOPERATIVE. REPLACED LT SIDE FWD EMERGENCY LIGHT LAMP IAW AMM 33-51-04-960-801. OPS CHECKED GOOD

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Lights · lens · missingOct 3, 2026

    LH RETRACTABLE LANDING LIGHT LENS FOUND MISSING. LEFT RETRACTABLE LDG LIGHT LENS SEEMS LOOSE REF AMM 33-42-02. REPLACED LH RETRACTABLE LDG LIGHT RETAINER ASSEMBLY DUE TO MISSING LENS, VERIFIED OPS OF LIGHT.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Lights · lens · looseOct 3, 2026

    LEFT RETRACTABLE LDG LIGHT LENS SEEMS LOOSE REF AMM 33-42-02 REPLACED LH RETRACTABLE LDG LIGHT RETAINER ASSEMBLY DUE TO MISSING LENS, VERIFIED OPS OF LIGHT. PDA CREATED

    From FAA Service Difficulty Reports; matched by N-number and serial number.
Show all 10 reports
  • Wings · fitting · corrodedJun 29, 2026

    RIGHT WING AT RIB 27. THE LOWER FWD TENSION FITTING AT THE AFT ATTACH HOLE HAS PITTING CORROSION AT 11:00 O'CLOCK FACING INBD. REPAIRED R/W AT RIB 27 LOWER FWD TENSION FITTING AT AFT ATTACH HOLE IAW UAL AVO17710 REV ORIGINAL AND UAL ECRA 5720- 03661 REV ORIGINAL WITH NO DEVIATIONS.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Stabilizers · skin · crackedFeb 23, 2026

    CRACK FOUND AT RIGHT HORIZONTAL STAB LOWER SKIN AT HSS 129.50 , INBD ROW , 9" FROM FRONT SPAR. CRACK LENGTH 1". REPAIRED RT HORIZONTAL STAB LOWER SKIN AT APPROX STA 129.5 IAW SRM 55-10-01-2R-11. ESFR ENTRY REQUIRED, DIP ENTRY REQUIRED. CATEGORY B REPAIR INSPECTION REQUIREMENTS AS PER SRM…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Stabilizers · spar · crackedFeb 19, 2026

    FOUND CRACK ON RIGHT HORIZONTAL FRONT SPAR WEB AT APPROXIMATLY STA. 129.5 ON CIRCUMFERANCE OF LIGHTENING HOLE.REF BY AAR NR 100009960. REPAIRED RIGHT HORIZONTAL FRONT SPAR WEB AT APPROX STA 129.5 ON CIRCUMFERANCE OF LIGHTENING HOLE AS PER SRM 55-10-10-2R-1. WORK ACCOMPLISHED BY V929396. ESFR…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Wings · spar web · corrodedFeb 16, 2026

    LEFT WING FRONT SPAR BOOST PUMP SKIN CUTOUT UPPER SURFACE HAS CORRODED. REPAIRED LEFT WING FRONT SPAR WEB AT THE FUEL BOOST PUMP CUTOUT IAW ESR-WI 2024282-9-14664 WITH THE APROVAL OF EC/RA 5720-03617.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Fuselage · window frame · crackedDec 22, 2025

    RIGHT NR 3 WINDOW FRAME FOUND CRACKED ON HOLES 3 & 4. PERFORMED REPAIR ON THE RT NR 3 WINDOW FRAME IAW EO 250450 REV. P1, P2, P3 AND IR, EA 5310-08195 REV. C, AND ECRA 5310-08750.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Fire protection · extinguisher · faultedSep 15, 2025

    WATER EXTINGUISHER AT 1L USED AS A PRECAUTION AND IT DID NOT OPERATE NORMALLY. CREW USED H2O EXTINGUISHER PRECAUTIONARILY ON CIGARETTE IN FWD LAV, NO SMOKE, NO ODOR, REMOVED AND REPLACED H2O EXTINGUISHER REF AMM 26-26-02

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Lights · battery pack · inoperativeAug 11, 2025

    AFT LEFT SECTION OF CABIN EMERGENCY LIGHT INOP. POWER SUPPLY BATTERY PACK REPLACED REF AMM 33-51-06-960-805, OPS CHECK GOOD.

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

Showing the 10 most recent of 111 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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