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Aircraft record

N37507Boeing 737-9

Registration validUnclaimedSource: FAA, updated Oct 20, 2026

Safety record in brief:No NTSB accidents or incidents since 198248 ADs may apply15 service difficulty reports

Registration
Valid
expires Oct 31, 2028
Based in
Chicago, IL
owner city / state
Engine
LEAP-1B28 SER · 29,317 lb thrust
Cfm Intl
Owners
1
since 2018
NTSB events
None
since 1982
ADs may apply
48
confirm with A&P
Service reports
15
since 1995

Registration

FAA Aircraft Registry · Oct 20, 2026
Registered owner
United Airlines INC
Owner type
Corporation
City, state
Chicago, IL
Certificate issued
Oct 1, 2018
Expires
Oct 31, 2028
Airworthiness
Standard · Transport
Airworthiness date
Sep 30, 2018

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
737-9
Serial number
43437
Aircraft type
Fixed wing multi engine
Category
Land
Certification
Not Type Certificated
Seats
48
Engines
2
Max takeoff weight
20,000 and over lb
Mode S code
A448D6

Engine

Make and model
Cfm Intl Leap-1b28 Ser
Type
Turbo-fan
Power
29,317 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. 2018 – nowUnited Airlines INCChicago, IL · current
  2. until 1976Sale ReportedOklahoma City, OK · different airframe: 1947 Douglas Dc-6 S/N 42872

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 (48)

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
2026-18-07FuselageOct 22, 2026Airframe (737-9)Serial numbers per Boeing Alert Requirements Bulletin 737-53A1420 RB, dated February 13, 2025
2026-15-11FuselageSep 10, 2026Airframe (737-9)Serial numbers per Boeing Alert Requirements Bulletin 737-53A1408 RB, dated December 20, 2024
2026-14-11Air ConditioningJul 13, 2026Airframe (737-9)
2026-13-17NavigationJul 1, 2026Airframe (737-9)
2025-25-04Equipment/ furnishingsJan 16, 2026Airframe (737-9)
Show all 48 ADs
ADSubjectEffectiveApplies to
2025-02-07NavigationMar 17, 2025Airframe (737-9)Only with: Collins GLU-2100 MMR P/N 822-2532-100 with software version earlier than COL4C-0087-0003 installed; MD-11/MD-11F modified by STC ST01895WI, 717-200 by STC ST04416AT, 747-400/-400F by STC ST01892WI, 757 by STC ST04436AT, 767 by STC ST04436AT or ST01883WI.
2024-23-11Flight controlsJan 6, 2025Airframe (737-9)Serial numbers per Boeing Alert Requirements Bulletin 737-27A1325 RB, dated July 14, 2023
2024-19-06Ice/Rain Protection SystemNov 26, 2024Airframe (737-9)Serial numbers per Boeing Alert Requirements Bulletin 737-30A1083 RB, dated November 18, 2022 (line numbers in paragraph 1.A., Effectivity)
2024-13-02OxygenJul 25, 2024Airframe (737-9)
2024-06-03Electrical PowerMay 22, 2024Airframe (737-9)Serial numbers per Boeing Alert Requirements Bulletin 737-24A1248 RB, dated May 16, 2022
2024-03-04Flight controlsFeb 12, 2024Airframe (737-9)Only with: Original airworthiness certificate or original export certificate of airworthiness issued on or before December 20, 2023.
2024-02-51DoorsJan 18, 2024Airframe (737-9)Only with: Airplanes with a mid cabin door plug installed.
2023-12-11NavigationJun 21, 2023Airframe (737-9)
2023-04-17FuelMay 1, 2023Airframe (737-9)Serial numbers per Boeing Alert Requirements Bulletin 737-38A1072 RB and 737-38A1073 RB, dated February 25, 2022
2023-06-10Ice and Rain Protection; 71, PowerplantApr 11, 2023Airframe (737-9)
2022-24-09Air conditioningJan 26, 2023Airframe (737-9)
2022-06-06Flight controlsJun 16, 2022Airframe (737-9)
2021-19-19WingsDec 8, 2021Airframe (737-9)Serial numbers per Boeing Alert Requirements Bulletin 737-57A1350 RB, dated April 23, 2020
2021-16-15Air conditioningAug 9, 2021Airframe (737-9)Certain serial numbers: 737-800 5684; 737-800 5759–on; 737-900ER 5768–on. Only with: All 737-8, 737-9 and 737-8200 airplanes; 737-800 and 737-900ER limited by line numbers (not serial numbers).
2021-12-13FuelJul 29, 2021Airframe (737-9)Serial numbers per Boeing Special Attention Requirements Bulletin 737-28-1363 RB, dated June 2, 2020
2021-10-07The Boeing Company AirplanesJul 8, 2021Airframe (737-9)Only with: Original airworthiness certificate or original export certificate of airworthiness issued before November 20, 2020.
2021-09-08Electrical power systemApr 30, 2021Airframe (737-9)Certain serial numbers: 7399–8082. Only with: Line numbers 7399 through 8082 inclusive, with an original airworthiness certificate or original export certificate of airworthiness issued on or before April 9, 2021.
2021-08-04OxygenMay 26, 2021Airframe (737-9)
2020-24-02Auto flight; 27, Flight controls; and 31, Indicating/recording systemsNov 20, 2020Airframe (737-9)Serial numbers per Boeing Special Attention Service Bulletin 737-31-1860, Revision 1, dated July 2, 2020
2020-14-09Fuel storageJul 15, 2020Airframe (737-9)Only with: Airplanes with an airworthiness certificate or export certificate of airworthiness issued on or before the effective date of this AD.
2020-11-12Nacelles/ pylonsJul 30, 2020Airframe (737-9)Serial numbers per Boeing Special Attention Service Bulletin 737-54-1056, dated December 11, 2019
2019-14-12Flight ControlsAug 30, 2019Airframe (737-9)Serial numbers per Boeing Alert Requirements Bulletin 737-27A1311 RB, dated June 24, 2019
2019-14-02Hydraulic powerAug 27, 2019Airframe (737-9)
2002-20-07 R1Boeing Model 737 Series AirplanesNov 12, 2002Airframe (737-9)
2002-20-07Boeing Model 737 Series AirplanesNov 12, 2002Airframe (737-9)
2001-11-11Boeing Model 737, 747, and 777 Series AirplanesJul 16, 2001Airframe (737-9)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 (737-9)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.
2001-08-24Boeing Model 737 Series AirplanesMay 10, 2001Airframe (737-9)
2000-22-02 R1Boeing Model 737 Series AirplanesNov 13, 2000Airframe (737-9)
2000-22-02Boeing Model 737 Series AirplanesNov 13, 2000Airframe (737-9)
2000-15-16Boeing Model 737, 757, 767, and 777 Series AirplanesSep 12, 2000Airframe (737-9)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 (737-9)
99-22-16Boeing Model 737 Series AirplanesDec 7, 1999Airframe (737-9)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 (737-9)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 (737-9)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 (737-9)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 (737-9)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 (737-9)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 (737-9)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 (737-9)
97-05-10Boeing Model 737 Series AirplanesMar 19, 1997Airframe (737-9)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 (737-9)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 (737-9)

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

Service Difficulty Reports (15)

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 · fuse · blownSep 3, 2026

    EMERGENCY LIGHTS OPS CHK, LIGHTS INOPERATIVE ROW 1-5. PART NIS TPA ALSO NEED BATTERY AS A PRECAUTION. PART NIS TPA ALSO NEED BATTERY AS A PRECAUTION. PART NIS TPA INSTALLED MULTIPLE, VERIFIED FUNCTIONAL UNITS. NO HELP. TROUBLESHOT EMERGENCY LIGHT SYSTEM IN REF WITH SSM 33-51-21 FOUND PICO FUSE AT…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Lights · battery pack · inoperativeSep 2, 2026

    ALL FIRST CLASS SEATS FLOOR PROXIMITY EMERGENCY LIGHTS INOP. REPLACE POWER SUPPLY- BATTERY PACK M1675 IAW AMM 33-51-06-960-802. ALL FIRST CLASS SEAT FLOOR PROXIMITY EMERGENCY LIGHTS OPS CHECKS GOOD.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Lights · light · faultedAug 14, 2026

    ALL FIRST CLASS EEPL WILL NOT ILLUMINATE REPLACED FUSES NO HELP. TRACED WIRES REF WDM 33-51-21. GOOD CONTINUITY THROUGHOUT CIRCUIT. INSPECTED ALL WIRES ALONG FLOOR IN FIRST CLASS, NO BREAKS OR DAMAGED WITING. SHOOK BUNDLES AND RECONNECTED ALL CONNECTORS. OPS CHECK GOOD LIGHT OPERATE NORMALLY

    From FAA Service Difficulty Reports; matched by N-number and serial number.
Show all 10 reports
  • Navigation · tat probe · faultedMar 12, 2026

    AFTER TAKEOFF WE LOST VNAV AND ALL FUEL TIME AND DISTANCE DATA. A/T THRUST LIMIT BITE CHECK FMC LEFT AND RIGHT OPS CK OK. T/S OMF TO FAULT CODE 73-43830 TAT FAULT PICKED UP BY BOTH ENGINE 1&2 EEC. REMOVED AND REPLACED TAT REF AMM 34-21-06 NO FAULTS NOTED AT THIS TIME. REF LP 8190715 FOR SEALANT…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Water and waste · motor · failedDec 3, 2025

    LAV E FLUSH MOTOR EXTREMELY HOT TO TOUCH AND BURNING ODOR IS PRESENT IN LAV. DISCONNECTED FLUSH SWITCH CONNECTOR IAW AMM 38-32-04, CONNECTORS STOWED. FBO VERIFIED NO BURNING SMELL PRESENT AT THIS TIME. REPLACED TOILET IAW AMM 38-32-01-000-806. OPS CHECKED GOOD.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Doors · cover · unsecureAug 2, 2025

    EMERGENCY EXIT DOOR COVER NEEDS TO BE RESEATED SEAT 20F, RESEATED SEAT 20F EMERGENCY EXIT DOOR COVER REF AMM 52-22-00-580-803

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Lights · fuse · blownApr 18, 2025

    EMERGENCY LIGHTS OPERATIONAL CHECK EMERGENCY LIGHTS OPERATIONAL CHECK - SEAT MOUNTED ASILE WAY LIGHTS INOP ROWS 1-5. REF 737 MAX AMM 33-51-06/201 REPLACED FUSE ON BATTER PACK M02816. ASILE LIGHTS RETURNED OPS CHECK GOOD.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Lights · power supply · inoperativeFeb 18, 2025

    FIRST CLASS SEATS EMERGENCY LIGHTS AND 1R OUTSIDE DOOR LIGHT NOT WORKING. INSTALLED NEW POWER SUPPLY FUSES PER AMM 33-51-06-960-801 OPS CHECK GOOD.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Ice and rain protection · sealant · damagedJan 28, 2025

    PROBE HEAT LIGHT COMES ON TEMP PROBE LT ON IN FLIGHT PIC ADDED R&R TOTAL TAT PROBE IAM AMM TASK 34-21-06-000-801/400-801, R&R WINDOW/PITOT HEAT MODULE IAW AMM TASK 30-00-02-400-801. PERFORMED SYSTEM TEST PITOT PROBE, AOA SENSOR AND TAT PROBE HEAT IAW AMM TASK 30-31-00-730-801. ALL TEST PASS, NO MX…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Fuselage · skin · dentedJan 12, 2025

    HIT AN ANIMAL JUST PRIOR TO ROTATION AT APPROXIMATELY 135 KIAS. PERFORMED BIRD STRIKE INSPECTION AMM 05-51-18-210-801 ONLY DAMAGE FOUND WAS DENT RIGHT SIDE JUST BEHIND RADOME. FORWARD DENT AT STA 183 AND STRINGER 24R, DENT IS SMOOTH AND NO PULLED RIVETS, MEASURES 4"X2"X.020. W/Y=100, REF…

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

Showing the 10 most recent of 15 reports.

Related aircraft

Show all 8 related aircraft
All 294 registered Boeing 737-9 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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