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Aircraft record

N177521999 Boeing 737-71Q

Registration validUnclaimedSource: FAA, updated Oct 20, 2026

Safety record in brief:No NTSB accidents or incidents since 198221 ADs may apply48 service difficulty reports

Registration
Valid
expires May 31, 2028
Based in
Chicago, IL
owner city / state
Engine
CFM56-7B24 · 24,200 lb thrust
Cfm Intl
Owners
1
since 2015
NTSB events
None
since 1982
ADs may apply
21
confirm with A&P
Service reports
48
since 1995

Registration

FAA Aircraft Registry · Oct 20, 2026
Registered owner
United Airlines INC
Owner type
Corporation
City, state
Chicago, IL
Certificate issued
May 29, 2015
Expires
May 31, 2028
Airworthiness
Standard · Transport
Airworthiness date
Jun 12, 2015

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
737-71Q
Year
1999
Serial number
29048
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
A13650

Engine

Make and model
Cfm Intl Cfm56-7b24
Type
Turbo-fan
Power
24,200 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. 2015 – nowUnited Airlines INCChicago, IL · current
  2. 1948 – 1951Individual ownerdifferent airframe: 1937 Aeronca Ks S/N K-30

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.

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 (737-71Q)
2002-20-07 R1Boeing Model 737 Series AirplanesNov 12, 2002Airframe (737-71Q)
2002-20-07Boeing Model 737 Series AirplanesNov 12, 2002Airframe (737-71Q)
2001-11-11Boeing Model 737, 747, and 777 Series AirplanesJul 16, 2001Airframe (737-71Q)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 (737-71Q)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 (737-71Q)
2000-22-02 R1Boeing Model 737 Series AirplanesNov 13, 2000Airframe (737-71Q)
2000-22-02Boeing Model 737 Series AirplanesNov 13, 2000Airframe (737-71Q)
2000-15-16Boeing Model 737, 757, 767, and 777 Series AirplanesSep 12, 2000Airframe (737-71Q)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 (737-71Q)
99-22-16Boeing Model 737 Series AirplanesDec 7, 1999Airframe (737-71Q)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 (737-71Q)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 (737-71Q)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 (737-71Q)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 (737-71Q)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 (737-71Q)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 (737-71Q)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 (737-71Q)
97-05-10Boeing Model 737 Series AirplanesMar 19, 1997Airframe (737-71Q)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 (737-71Q)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 (737-71Q)

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

Service Difficulty Reports (48)

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 · no testJul 31, 2026

    FLIGHT READINESS CHECKLIST. FWD CABIN EMERGENCY EXIT LIGHTING INOPERATIVE. REMOVED AND REPLACED BATTERY PACK AT FWD GALLEY RT POSITION IAW AMM 31-51-06. OPS CHKD GOOD.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Nacelles and pylons · latch · damagedJun 25, 2026

    OPEN ENG LATCHES ON NR 2 ENGINE. CONTACTED ENGINEERING AND APPLYING ECRA 5452-01160. TERMINATING ACTION TO BE COMPLETED IN 5 DAYS.111 LATCH OF CONCERN IS INBD AFT LATCH, SECURED REF ECRA5452-01160. INTERIM REPAIR MADE TO #2 ENGINE PYLON THUMBNAIL FAIRING LATCH PER ECRA 5452-01160 PART 1.…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Air conditioning and pressurization · a/c pack · odorNov 12, 2025

    STRANGE ODOR FROM PACKS WHILE DESCENDING THRU 8000 UNTIL LANDING RAN BOTH PACKS FOR A WHILE, UNABLE TO DUPLICATE THE SMELL.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
Show all 10 reports
  • Lights · lamp · brokenAug 27, 2025

    EMERGENCY LIGHT LAMP BROKEN AT SEAT 30C REPLACED LIGHT ASSY OPS CHK OK REF AMM 33-51-11

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Lights · battery pack · inoperativeJul 15, 2025

    CEILING EMERGENCY LIGHTS FROM SEAT 23 LEFT SIDE ARE INOPERATIVE, AS WELL AS THE AFT LT LAV FLOOR EMERGENCY LIGHTS INOPERATIVE. FOUND BAD EMERGENCY POWER BATTERY PACK (M1673) IN CEILING PANEL LT OF FDR ACCESS PANEL. R & R BATTERY IAW AMM 33-51-06-960-805. OPS CHECKED GOOD. OK FOR SERVICE.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Stabilizers · rib · crackedMay 8, 2025

    RH HORIZ STAB RIB #1 STIFFENER 1 CRACK. REF AAR N/R 9962029 REMOVED DAMAGE AT #1 STIFFENER IN REF. WITH SRM 55-10-09-2R-4.INSTALLED REPAIR ON R/HORIZONTAL STAB #1 RIB #1 STIFFENER IN REF. WITH SRM 55-10-09-2R-4

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Stabilizers · rib · crackedMay 7, 2025

    LH HORIZ STAB RIB #1 STIFFENER 1 CRACK. (REF AAR N/R 9962024) INSTALLED REPAIR PARTS AT L/H HORIZONTAL RIB 1 STIFFENER 1 WITH BMS 5-95 SEALANT AT 03/26/2024 AT 11:50 A.M, MIXED SEALANT T 11:46 A.M CURE TIME IS 2:40 P.M, APPLIED FILLET SEAL AT REPAIR PARTS AT 2:05 P.M, MIXED AT 2:02 P.M CURE TIME…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Stabilizers · rib · crackedMay 7, 2025

    LH HORIZ STAB RIB #1 STIFFENER 3 CRACK. (REF AAR N/R 9962026) INSTALLED REPAIR PARTS AT L/H HORIZONTAL RIB 1 STIFFENER 3 WITH BMS 5-95 SEALANT AT 03/26/2024 AT 11:50 A.M, MIXED SEALANT AT 11:46 A.M CURE TIME IS 2:40 P.M, APPLIED FILLET SEAL AT REPAIR PARTS AT 2:05 P.M, MIXED AT 2:02 P.M CURE TIME…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Stabilizers · rib · crackedMay 7, 2025

    LH HORIZ STAB RIB #1 STIFFENER 2 CRACK.BY REF AAR NR9962025. ACCOMPLISHED STIFFENER REPAIR AT L/H HORIZONTAL RIB#1 STIFFENER 1 AS PER SRM-55-10-09-2R-5.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Fuselage · window frame · crackedMay 6, 2025

    ACCOMPLISH PERMANENT REPAIR AT LEFT WINDOW FRAME POST PER ECRA 5611-01327.REF AAR NR 9961722. ACCOMPLISHED REPAIR AT FLIGHT DECK LEFT WINDOW POST PER ECRA: 5310-08574 .REF AAR NR9961722. QC APPROVED AFTER MARCH 28, 2027, BUT BEFORE APRIL 28, 2027, PERFORM AN INSPECTION OF THE INTERIM REPAIR…

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

Showing the 10 most recent of 48 reports.

Related 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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