Aircraft record

N237211999 Boeing 737-724

Registration validUnclaimedSource: FAA, updated Oct 19, 2026

Safety record in brief:No NTSB accidents or incidents since 198221 ADs may apply100 service difficulty reports

Registration: Valid; expires Oct 31, 2029
Based in: Chicago, IL; owner city / state
Engine: CFM56 SERIES · 2200 hp; Cfm Intl.
Owners: 1; since 1999
NTSB events: None; since 1982
ADs may apply: 21; confirm with A&P
Service reports: 100; since 1995

Registration

FAA Aircraft Registry · Oct 19, 2026

Registered owner: United Airlines INC
Owner type: Corporation
City, state: Chicago, IL
Certificate issued: Mar 10, 1999
Expires: Oct 31, 2029
Airworthiness: Standard · Transport
Airworthiness date: Mar 9, 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: 28940
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: A22539

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

1999 – nowUnited Airlines INCChicago, IL · current

Individual owners are shown by city and state only.

Safety record

NTSB · Oct 15, 2026 · FAA ADs · Oct 19, 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.

AD	Subject	Effective	Applies to
2019-14-02	Hydraulic power	Aug 27, 2019	Airframe (737-724)
2002-20-07 R1	Boeing Model 737 Series Airplanes	Nov 12, 2002	Airframe (737-724)
2002-20-07	Boeing Model 737 Series Airplanes	Nov 12, 2002	Airframe (737-724)
2001-11-11	Boeing Model 737, 747, and 777 Series Airplanes	Jul 16, 2001	Airframe (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
2001-10-14	Boeing Model 737, 747, 757, 767, and 777 Series Airplanes	Jun 8, 2001	Airframe (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

AD	Subject	Effective	Applies to
2001-08-24	Boeing Model 737 Series Airplanes	May 10, 2001	Airframe (737-724)
2000-22-02 R1	Boeing Model 737 Series Airplanes	Nov 13, 2000	Airframe (737-724)
2000-22-02	Boeing Model 737 Series Airplanes	Nov 13, 2000	Airframe (737-724)
2000-15-16	Boeing Model 737, 757, 767, and 777 Series Airplanes	Sep 12, 2000	Airframe (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.
99-11-05	Boeing Model 737 Series Airplanes	Jun 28, 1999	Airframe (737-724)
99-22-16	Boeing Model 737 Series Airplanes	Dec 7, 1999	Airframe (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 R1	Boeing Model 737, 747, 757, 767, and 777 Series Airplanes	Dec 28, 1998	Airframe (737-724)Serial numbers per Boeing Alert Service Bulletins 737-27A1212, 747-27A2368 Revision 2, 757-27A0128, 767-27A0156, 777-27A0029 Revision 1
98-22-10	Boeing Model 737 Series Airplanes	Nov 12, 1998	Airframe (737-724)Serial numbers per Boeing Service Bulletin 737-53A1108, Revision 5, dated October 26, 1989
98-18-20	Boeing Model 727 and Model 737 Series Airplanes Equipped with J.C. Carter Company Fuel…	Oct 21, 1998	Airframe (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).
98-13-12	Boeing Model 737, 747, 757, 767, and 777 Series Airplanes	Jul 6, 1998	Airframe (737-724)Serial numbers per Boeing Alert Service Bulletins 737-27A1212, 747-27A2368, 757-27A0128, 767-27A0156, and 777-27A0029, dated March 26, 1998
98-03-10	Boeing Model 737, 747, 757, and 767 Series Airplanes	Feb 19, 1998	Airframe (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.
97-22-07	Boeing Model 737 Series Airplanes	Nov 12, 1997	Airframe (737-724)Certain serial numbers: 737 292–2565. Only with: Limited to airplanes with line numbers 292 through 2565 inclusive.
97-18-06	Boeing Model 737 Series Airplanes	Nov 12, 1997	Airframe (737-724)
97-05-10	Boeing Model 737 Series Airplanes	Mar 19, 1997	Airframe (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.
97-04-01	Boeing Model 737 Series Airplanes	Mar 21, 1997	Airframe (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
95-23-10	Boeing Model 737 Series Airplanes	Dec 13, 1995	Airframe (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 (100)

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.

Navigation · adiru · faultedJan 30, 2026
AFTER TAKE OFF, BOTH CA & FO LOST BOTH HEADING AND LATERAL INDICATIONS, FO DATA CAME BACK. ACP DCFS BITE, BPCS, GCU 1 & 2, NO FAULTS. LT ADIRU HAS ENTER HEADING FAULT ON LAST LEG MAIT MESSAGE 34-21009 FIM 34-21 TASK 808 INITIAL EVALUATION SHOWED NO CURRENT FAULTS IAW ADIRS BITE FIM 34-21 TASK 801.…
From FAA Service Difficulty Reports; matched by N-number and serial number.
Fuselage · stringer · corrodedDec 5, 2025
STRINGER 27L HAS CORROSION BETWEEN BS 360 & 380 AT PRODUCTION SPLICE. CUT STRINGER 27L FROM BS 338 TO FACTORY SPLICE AND FROM FACTORY SPLICE IAW SRM 51-10-02. STR 27L FWD OF FACTORY SPLICE WILL NOW BE COVERED BY LOG PAGE 7064237. PERFORMED HFEC INSPECTION OF CUT EDGE OF STRINGER PER NDT MANUAL…
From FAA Service Difficulty Reports; matched by N-number and serial number.
Fuselage · skin · crackedDec 2, 2025
DURING HOLE PROBE INSPECTION FOUND DEFECT IN ONE FASTENER COMMON TO S-27L AT STA 372 AND ONE FASTENER COMMON TO SHEAR TIE AT BS 372 ABOVE S27AS IAW SRM 51-10-02, REAMED HOLE IN SHEAR TIE AREA, SKIN ONLY, TO .233" CRACK INDICATION GONE, REAMED HOLE IN STR 27L, SKIN ONLY, TO .308" STILL HAVE CRACK…
From FAA Service Difficulty Reports; matched by N-number and serial number.

Show all 10 reports

Fuselage · stringer · corrodedNov 24, 2025
STRINGER 27L HAS CORROSION AT BS 360. REMOVED DAMAGED SECTION OF STRINGER 27L IAW SRM 51-10-02, STEP 4C. PERFORMED HFEC INSPECTION OF CUT EDGE OF STRINGER IAW NDT MANUAL PART 6, 51-00-00 PROC 23, NO DEFECTS NOTED. ACCOMPLISHED PART -A- STEP 6 OF AVO 721-25-11-24-01. PERFORMED HOLE PROBE INSPECTION…
From FAA Service Difficulty Reports; matched by N-number and serial number.
Fuselage · stringer · corrodedNov 24, 2025
STRINGER 26L HAS CORROSION BETWEEN BS 360 AND 380. REMOVED DAMAGED SECTION OF STR 26L IAW SRM 53-00-03-2R-1 STEP 4 A&B. HFEC REQUIRED AT CUT EDGE OF DMG REMOVAL IAW SRM 53-00-03-2R-1 STEP 4C. PERFORMED HFEC INSPECTION OF CUT EDGE OF STRINGER IAW NDT MANUAL PART 6, 51-00-00 PROC 23, NO DEFECTS…
From FAA Service Difficulty Reports; matched by N-number and serial number.
Fuselage · stringer · corrodedNov 24, 2025
STRINGER 25L HAS CORROSION BETWEEN BS 360 & 380. CUT OUT DAMAGE FROM STR 25L IAW SRM 53-00-03-2R-1, STEP 4 A & B. PERFORMED HFEC INSPECTION OF CUT EDGE OF STRINGER IAW NDT MANUAL PART 6, 51-00-00 PROC 23, NO DEFECTS NOTED. FABRICATED, LOCATED, DRILLED, TREATED, & PRIMED ALL REPAIR PARTS FOR…
From FAA Service Difficulty Reports; matched by N-number and serial number.
Fuselage · frame · crackedOct 22, 2025
CRACK INDICATION NOTICED ON THE LT SIDE E-F POST 3 AND 5 FASTENER HOLES. ACCORDING WITH EA 5310-08195 REV. OP 003 STEP B (26). IF CRACK IS OBSERVED AFTER IT WAS REAMED TO THE PRE COLD WORKED DIAMETER, COMPLIED WITH ECRA 5310-08709. REF AAR RFD NON ROUTINE 1000048718. REPAIRED CRACK INDICATIONS IAW…
From FAA Service Difficulty Reports; matched by N-number and serial number.
Fuselage · door frame · crackedOct 22, 2025
CRACK INDICATION NOTICED ON RT SIDE E-F POST NR 3 FASTENER HOLE. ACCORDING WITH EA 5310-08195 REV. OP 004 STEP B (26). IF CRACK IS OBSERVED AFTER IT WAS REAMED TO THE PRE COLD WORKED DIAMETER. COMPLIED WITH ECRA 5310-08708. REF AAR RFD NONROUTINE 1000048714. COMPLIED WITH ECRA 5310-08708. REF AAR…
From FAA Service Difficulty Reports; matched by N-number and serial number.
Wings · skin · delaminatedOct 18, 2025
LH WING, OUTBOARD FLAP, AFTER FLAP, INBOARD END, LOWER SKIN WITH 3 DISBOND AREAS, 7 X 11 INCHES, 4X 1 INCHES AND 1 X 1 INCH. CLEANED, PREPPED, REPAIRED AND RESTORED PAINT AT LH WING, OUTBOARD FLAP, AFTER FLAP, INBOARD END, LOWER SKIN IAW SRM 57-53-01-2R-16, SRM 51-70-10-2R-0, AMM 51-21-41-370-802…
From FAA Service Difficulty Reports; matched by N-number and serial number.
Wings · skin · delaminatedOct 17, 2025
RIGHT WING, OUTBOARD FLAP, AFTER FLAP, INBOARD END, UPPER SKIN WITH DISBOND AREA 4 X 3 INCHES. CLEANED, PREPPED, REPAIRED AND RESTORED PAINT AT RH WING, OUTBOARD FLAP, AFTER FLAP, INBOARD END, UPPER SKIN IAW SRM 57-53-01-2R-16, SRM 51-70-10-2R-0, AMM 51-21-41-370-802, AMM 51-21-72-370-804 AND AMM…
From FAA Service Difficulty Reports; matched by N-number and serial number.

Showing the 10 most recent of 100 reports.

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 19, 2026
FAA Service Difficulty ReportsReports since 1995updated Oct 16, 2026

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