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Aircraft record

N397281999 Boeing 737-724

Registration validUnclaimedSource: FAA, updated Oct 20, 2026

Safety record in brief:No NTSB accidents or incidents since 198221 ADs may apply75 service difficulty reports

Registration
Valid
expires Jan 31, 2029
Based in
Chicago, IL
owner city / state
Engine
CFM56 SERIES · 2200 hp
Cfm Intl.
Owners
1
since 2019
NTSB events
None
since 1982
ADs may apply
21
confirm with A&P
Service reports
75
since 1995

Registration

FAA Aircraft Registry · Oct 20, 2026
Registered owner
United Airlines INC
Owner type
Corporation
City, state
Chicago, IL
Certificate issued
Jan 16, 2019
Expires
Jan 31, 2029
Airworthiness
Standard · Transport
Airworthiness date
Jul 15, 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
28944
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
A49F89

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. 2019 – nowUnited Airlines INCChicago, IL · current
  2. 1988 – 1991Western Acft Lsg INCCanby, OR · different airframe: Piper Pa-32rt-300t S/N 32r7887155
  3. 1944 – 1949Purdue Aeronautics CorporationWest Lafayette, IN · different airframe: Waco Upf-7 S/N 5861

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 (75)

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 · faultedMay 25, 2026

    ON ROTATION R IRS FAULT LIGHT ILLUMINATED. DOES NOT EXTINGUISH COMPLETED ADIRU BITE FIM TASK 34-21 TASK 801, CURRENT STATUS R ADIRU, REPLACED RT ADIRU, OPS CHECK GOOD MM 34-21-00

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Windows · sliding window · leakingApr 28, 2026

    CAPTAIN`S LEFT WINDOW AIR LEAKING SOUND IN FLTPRESSURIZED A/C AND FOUND LEAKS AT 500FT AROUND BOTTOM OF 2L SLIDING WINDOW 56-12-11. REMOVED THE WINDOW. STARTED TO INSTALL NEW 2L WINDOW WHEN WE INFORMED TO STOP THAT MOVE TEAM WAS GOING TO TAKE THE ACFT. REINSTALLED WINDOW FOR THE MOVE. NEW WINDOW…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Windows · drain line · disconnectedFeb 14, 2026

    DURING TAKEOFF WATER WAS FALLING OUT OF CA SIDE WINDOW AND LOUD NOISE WAS PRESENT INSPECTED CAPTAIN NR 2 WINDOW. FOUND LOWER DRAIN HOLE TUBE DISCONECTED. IAW AMM 56-12-11, RESECURED DRAIN TUBE. NO DEFECTS NOTED. NO LEAKS NOTED.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
Show all 10 reports
  • Lights · wire · pulledOct 26, 2025

    SEAT MOUNTED EMERGENCY LIGHT AT SEAT 10C INOPERATIVE. R & R THE FLOOR PROXIMITY EMERGENCY LIGHT ASSY IAW AMM 33-51-11. DID NOT FIX. FOUND WIRING PULLED OUT FROM COVER AND EXPOSED TO PASSENGERS FEET AT ROW 10 ABC. BLACK WIRE PULLED OUT OF CONNECTER. VERIFIED WHEN BLACK WIRE IS HELD INTO CONNECTER…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Equipment and furnishings · slide · partial deployAug 4, 2025

    SLIDE AT DOOR L1 PARTIAL DEPLOY. REMOVED DOOR 1L SLIDE ASSY IAW AMM 25-66-01-000-801. INSTALLED ESCAPE SLIDE PACK AND COVER PER AMM TASK 25-66-01-400-803.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Lights · lamp · inoperativeJul 14, 2025

    EMERGENCY LIGHTING SYSTEM OPERATIONAL CHECK. EMERGENCY LIGHT INOPERATIVE AT EXTERIOR OF L1 DOOR . RELAMPED L1 DOOR SLIDE EMERGENCY LIGHT IAW AMM 33-51-04-960-801. OPS NORMAL, OK TO CONTINUE.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Equipment and furnishings · skirt · no discrepancyJun 13, 2025

    EXCESSIVE SKIRT SHOWING ON 1R DOOR. PERFORMED INSPECTION OF DOOR SLIDE GIRT BAR TO COVER MEASUREMENT WITHIN LIMITS REF AMM TASK 25-66-01-400-803 UNDER 11" HANGING LENGTH.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Air conditioning and pressurization · acm · faultedJun 9, 2025

    LEFT PACK TRIPPED TWO TIMES IN FLIGHT RESET BOTH TIMES BUT UNABL E TO COOL CABIN DEBRIEFED CREW AND THEY INDICATED THAT 4 ATTEMPTS TO RESET PACK WERE UNSUCCESSFUL AND ONCE THEY PULLED THROTTLES BACK FOR DESCENT THEY WERE UNABLE TO HOLD CABIN PRESSURE. PERFORMED LEFT PACK TRIP OFF LIGHT ON AT…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Stabilizers · skin · damagedApr 16, 2025

    R/H HORIZONTAL STABILIZER AT STA 111.10 REQUIRES A SKIN REPAIR FOR ACCESS REPAIR PERFORMED REPAIR TO R/H HORIZONTAL STABILIZER AT STA 111.10 PER SRM 55-10-01 REPAIR 11,PLACED ON DIP FOR REINSPECT AT 56,000 TOTAL FLIGHT CYCLES AND EVERY 9,000 FLIGHT CYCLES THEREAFTER PER SRM 55-10-01 REPAIR 11.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Doors · cover · unsecureFeb 19, 2025

    21F EXIT ROW DOOR HANDL E COVER UNSECURE UPDATED MAA CODE FIX USING VENDOR MAA SCREEN PLEASE INVESTIGATE AND CONTACT TOMC WITH FINDINGS. RE-INSTALLED 21F EXIT DOOR HANDLE COVER. OK FOR SERVICE.

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

Showing the 10 most recent of 75 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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