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Aircraft record

N375042018 Boeing 737-9

Registration validUnclaimedSource: FAA, updated Oct 19, 2026

Safety record in brief:No NTSB accidents or incidents since 198248 ADs may apply11 service difficulty reports

Registration
Valid
expires May 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
11
since 1995

Registration

FAA Aircraft Registry · Oct 19, 2026
Registered owner
United Airlines INC
Owner type
Corporation
City, state
Chicago, IL
Certificate issued
May 21, 2018
Expires
May 31, 2028
Airworthiness
Standard · Transport
Airworthiness date
May 18, 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
Year
2018
Serial number
43435
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
A448D3

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. 1989 – 2001Individual ownerBoston, MA · different airframe: 1984 Balloon Works Firefly 6b S/N F6b-008
  3. 1947 – 1970United Air Lines INCChicago, IL · different airframe: Douglas Dc-6 S/N 42869

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 (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 (11)

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 · battery pack · inoperativeOct 9, 2026

    OVERWING EMERGENCY EXIT LIGHTS AT 20F & 21F INOPERATIVE AND OVERHEAD EMEGENCY EXIT LIGHT BETWEEN SEAT ROWS 20C & 20D INOP M1695 BATT INOPERATIVE. REPLACED BATTERY PACK AT M1695, OPS CK GOOD. REF WDM 33-51-13-4 & AMM 33-51-06.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Lights · light · brokenSep 11, 2026

    EMERGENY LIGHT IN AISLE SEAT 14C BROKEN. REMOVED AND REPLACED EMERGENCY LIGHT AT 14C IAW AMM 33-51-11.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Lights · light · intermittentAug 13, 2026

    EMERGENCY LIGHTS PUSH TO TEST LIGHT DOES NOT ILLUMINATE WHEN PUSHED. ALL EMERGGENCY LIGHTS OPS NORMAL. AFT FA PANEL EMERGENCY LIGHT BUTTON ILLUMINATES WHEN PRESSED. UNABLE TO DUPLICATE FAULT.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
Show all 10 reports
  • Equipment and furnishings · megaphone · no testAug 2, 2026

    FORWARD MEGAPHONE DOESNT GIVE AN AUDIBLE POP ON TEST. REMOVED AND REPLACED FWD MEGAPHONE IAW AMM 25-64-01.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Air conditioning and pressurization · unknown · odorJul 2, 2026

    GATE AGENT REPORTED THAT F/A ADVISED OF SMOKE/ELECTRICAL BURNT ODOR IN THE FLIGHT DECK, DEBRIEFED FLIGHT ATTENDANTS AND ALL CONFIRMED THEY WITNESSED A DARK SMOKE EMANATING FROM FLIGHT DECK. SMOKE SMELLED LIKE AN ELECTRICAL BURNING ODOR. APU WAS RUNNING AND PACKS WERE ON WITH NO OUTSIDE AIR COND.…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Lights · light · looseJun 9, 2026

    F/A REPORTS 35C EMERGENCY EXIT LIGHT IS LOOSE AGAIN. SEAT MOUNTED EMERGENCY LIGHT AT 35C PLACED ON MEL 3351D, REMOVED AND REPLACED SEAT 35CEMERGENCY LIGHT RACEWAY SHROUD OPS CHECKS GOOD.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Lights · light · detachedJan 16, 2026

    29C EMERGECY EXIT PATH LIGHTING BROKE OFF SEAT. INSPECTION CARRIED OUT AND FOUND SEAT 29C EMERGENCY LIGHT ESCAPE PATH LIGHT ASSY BROKE OFF FROM SEAT 29C. LIGHT WORKS NORMALLY. INTERIM REPAIR CARRIED OUT IAW PART 1 OF ECRA 2520-07965. REMOVED AND REPLACED SEAT EMERGENCY LIGHT CASING IAW AMM…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Hydraulic power · hydraulic line · leakingNov 1, 2025

    LOSS OF SYSTEM B HYDRALLICS NO EVIDENCE OF EXTERNAL LEAKAGE NOTED. HYD SYS B RESERVOIR NEAR EMPTY. ATTEMPTED TO SERVICE AND NO RAISE IN QTY INDICATION. SUSPECT INTERNAL LEAK AT HEAT EXCHANGER. MOVING TO BASE FOR MORE T/S SERVICED 'B' HYDRAULIC RESERVOIR TO FULL REF MM 12-12-00-610-801. DURING…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Doors · switch · faultedFeb 23, 2025

    AFT CARGO LT ON TAXI CONFIRMED AFT CARGO DOOR IS CLOSED AND LATCHED. REQUEST MEL TOMC APPROVED ITEM PLACED ON MEL *DM* SUGGEST FIM 52-30 TASK 808, CK AFT CARGO DOOR AND SWITCH ADJUSTMENT AMM 52-71-31-820-801, IF OK, THEN SUGGEST REPLACE S00961. REMOVED AND REPLACED AFT CARGO DOOR INDICATION…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Lights · shroud · faultyNov 16, 2024

    9C EMER AISLE FLOOR LIGHT HANGING FROM SEAT UPDATED MAA CODE FIX USING VENDOR MAA SCREEN PLEASE CONTACT TOMC BEFORE COMMENCING ANY WORK. ADDING PIC MAC METER INITIATED FOR .WITH VENDOR ID V934773 MAC RELATED WORK ORDER 000000003122539 AND PRTR RODRIGUEZ LLANOS, ABIMAEL (V934773) FOUND MOUNT FOR…

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

Showing the 10 most recent of 11 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 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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