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Aircraft record

N177191999 Boeing 737-724

Registration validUnclaimedSource: FAA, updated Oct 20, 2026

Safety record in brief:No NTSB accidents or incidents since 198221 ADs may apply79 service difficulty reports

Registration
Valid
expires Aug 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
79
since 1995

Registration

FAA Aircraft Registry · Oct 20, 2026
Registered owner
United Airlines INC
Owner type
Corporation
City, state
Chicago, IL
Certificate issued
Feb 4, 1999
Expires
Aug 31, 2029
Airworthiness
Standard · Transport
Airworthiness date
Feb 3, 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
28938
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
A135CB

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. 1999 – nowUnited Airlines INCChicago, IL · current
  2. until 1989Individual ownerdifferent airframe: Piper Pa-18a 150 S/N 187253

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 (79)

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 · inoperativeSep 9, 2026

    DOOR 1L EMERGENCY LIGHT OUT R&R INOP EXTERNAL EMERGENCY LAMP DOOR 1 LEFT REF AMM 33-51-04. OPS CHECK GOOD

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

    DOOR 2R EMERGENCY LIGHT OUT. R&R INOP EXTERIOR EMERGENCY LAMP DOOR 2 RIGHT REF AMM 33-51-04. OPS CHECK GOOD

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Lights · battery pack · no testJun 4, 2026

    EMERGENCY LIGHT BATTERY AT M1673 FAILS 15 MIN. CAPACITY CHECK. REMOVED AND REPLACED BATTERY PACK M1673 IAW MM 33-51-06.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
Show all 10 reports
  • Lights · light sys · faultedMay 19, 2026

    DURING EMERGENCY LIGHT OPS CHECK, FOUND LOWER STOW BIN AISLE LIGHT AT SEAT ROW 23 ABC INOP. SUPPORT TASK NSA EMX NR 00012. REMOVED, REPLACED, AND OPS CHECKED EMERGENCY LIGHT LAMP AT LOWER STOW BIN AISLE SEAT ROW 23ABC IAW 33-51-03-960-801. OPS CHECK GOOD.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Landing gear · landing gear · faultedOct 27, 2025

    LNDG GEAR DID NOT RETRACT AFTER T/O RAN QRH PROCEDURE SUCCESSFUL LY DEBRIFED CREW, PER CREW THEY FOLLOW QRH FOR GEAR FAILS TO RETRACT 2.140.10 AND FOLLOW HYPERLINK STEPS TO CYCLING LANDING ALTERNATE EXTENSION DOOR ON THE FLOOR THEN CYCLED LANDING GEAR LEVER DOWN AND UP AND GEAR RETRACTED NORMALLY.…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Fuselage · stringer · corrodedOct 3, 2025

    FOUND 3 AREAS OF CORROSION IN STRINGER CHANNEL AT APPROX STA 811, STA 815, AND STA 832, STR 25L. REMOVED DAMAGE AT STA 811 -825 AT STR 25L HFEC REQUIRED AT CUT EDGE OF STR 25L AND APROX STA 811 REF SRM 53-00-03-2R-1 STEP 4 (C) PERFORMED HFEC AT CUT EDGE OF STR 25L AND APROX STA 811 REF SRM…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Fuselage · skin · damagedOct 2, 2025

    DAMAGE FOUND TO SKIN BETWEEN STRINGERS 25L AND 26L AROUND STATION 400.REMOVED EXISTING FASTENERS AROUND DAMAGED SKIN AREA, TRIMMED OUT DAMAGED SKIN PER SRM 51-10-02. REF IMAGE ATTACHED FOR DIMENSIONS, SUMMITED TO ESC-MCO FOR REPAIR INSTRUCTION. VERIFY MATERIAL FOR REPAIR -1 FILLER AND -3 TRIPLER…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Fuselage · skin · corrodedSep 27, 2025

    SKIN BULGED AROUND RIVETS LWR AFT CORNER OF LAV SERVICE PANEL. REMOVED LOCK FASTENERS ON LOWER AFT AND FWD OF LAV SERVICE PANEL IAW SRM 51-40-02. REMOVED LAV SERVICE PANEL IAW SRM 51-40-02. REMOVED CORROSION ON LOWER AFT CORNER OF LAV SERVICE DOOR CUTOUT ON ACFT SKIN IAW SRM 51-10-02. FOUND TO BE…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Fuselage · skin · bulgedSep 27, 2025

    FOUND BULDGE IN THE SKIN ALONG WITH PULLED RIVET HEADS ON STRINGER 26L BETWEEN STA 360-380. AFTER FURTHER INSPECTION, FOUND CORROSION BETWEEN STRINGER & SKIN AT THE STRINGER SPLICE. REMOVED STRINGER 26L IAW SRM 51-40-02 & AVO719-25-09-26-01. REMOVED STRINGER S26L SPLICE IAW SRM 51-40-02 AND AVO…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Air conditioning and pressurization · unknown · odorAug 31, 2025

    PAX REPORTED BURNING SMELL AT 28A BRIEFED CREW, PILOT REPORTED PAX SAID SMELL OCCURED DURING INITIAL TAXI AND IN MID FLIGHT UNABLE TO DUPLICATE FAULT AT THIS TIME.

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

Showing the 10 most recent of 79 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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