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Aircraft record

N906UA1991 Boeing 737-522

DeregisteredUnclaimedSource: FAA, updated Oct 20, 2026

This N-number isn't registered right now. Below is its last known registration, canceled Mar 21, 2013.

Safety record in brief:No NTSB accidents or incidents since 198221 ADs may apply32 service difficulty reports

Registration
Deregistered
Last based in
Chicago, IL
owner city / state
Engine
CFM56 SERIES · 2200 hp
Cfm Intl.
Owners
1
since 1993
NTSB events
None
since 1982
ADs may apply
21
confirm with A&P
Service reports
32
since 1995

Registration

FAA Aircraft Registry · Oct 20, 2026
Last registered owner
United Air Lines INC
Owner type
Corporation
City, state
Chicago, IL
Certificate issued
Apr 30, 1993
Canceled
Mar 21, 2013
Airworthiness
Standard · Transport
Airworthiness date
Jan 22, 1991

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
737-522
Year
1991
Serial number
25006
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
AC8739

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. 1993 – 2013United Air Lines INCChicago, IL

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 (737-522)
2002-20-07 R1Boeing Model 737 Series AirplanesNov 12, 2002Airframe (737-522)
2002-20-07Boeing Model 737 Series AirplanesNov 12, 2002Airframe (737-522)
2001-11-11Boeing Model 737, 747, and 777 Series AirplanesJul 16, 2001Airframe (737-522)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 (737-522)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 (737-522)
2000-22-02 R1Boeing Model 737 Series AirplanesNov 13, 2000Airframe (737-522)
2000-22-02Boeing Model 737 Series AirplanesNov 13, 2000Airframe (737-522)
2000-15-16Boeing Model 737, 757, 767, and 777 Series AirplanesSep 12, 2000Airframe (737-522)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 (737-522)
99-22-16Boeing Model 737 Series AirplanesDec 7, 1999Airframe (737-522)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 (737-522)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 (737-522)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 (737-522)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 (737-522)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 (737-522)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 (737-522)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 (737-522)
97-05-10Boeing Model 737 Series AirplanesMar 19, 1997Airframe (737-522)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 (737-522)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 (737-522)

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

Service Difficulty Reports (32)

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.

  • Fuselage · structure · damagedSep 11, 2012

    A CATEGORY B MAJOR SHEETMETAL REPAIR WAS INSTALLED BETWEEN STA 312 & 330 & BETWEEN STR 20R AND 21R PER SRM REPAIR 31.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Fuselage · door frame · crackedSep 11, 2012

    FWD CARGO DOOR CUTOUT IS CRACKED IN TWO PLACES. FIRST CRACK IS ON AFT SIDE OF FRAME IS CRACKED IN TWO PLACES. FIRST CRACK IS ON AFT SIDE OF FRAME IN RADIUS ADJACENT TO I/B UPPER CORNER OF LWR STOP FITTING, SECOND CRACK IS ON FWD SIDE OF FRAME JUST BELOW UPPER CORNER I/B CORNER OF LOWER STOP…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Equipment and furnishings · coffeemaker · faultyApr 6, 2008

    FLIGHT ATTENDANT NOTICED HOT SMELL AT FWD GALLEY. SMELL WAS ELECTRIC. THEN SPARK OCCURRED FROM COFFEE MARKER GRILL (HOT PLATE) THEN ARC AND PUFF OF SMOKE.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
Show all 10 reports
  • Equipment and furnishings · wire · faultyApr 6, 2008

    FLIGHT ATTENDANT NOTICED HOT ODOR AT FWD GALLEY. SMELL WAS ELECTRIC. THEN SPARK OCCURRED FROM COFFEEMARKER GRILL (HOT PLATE) THEN ARC AND PUFF OF SMOKE. FOUND BURNED WIRE ON FORWARD GALLEY COFFEEMAKER. REPLACED COFFEEMAKER. AWAITING SHOP FINDINGS.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Lights · power supply · inoperativeMar 27, 2008

    FLOOR EEL LIGHTS INOP FROM ROW 15 TO AFT GALLEY. REPLACED WET POWER FEEDER.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Doors · skin · damagedJan 28, 2008

    FWD CARGO DOOR DAMAGED BY BELT LOADER. MAJOR REPAIR: REMOVED DAMAGED SKIN. INSTALLED REPAIR DOUBLER.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Fire protection · fire warning · no testJan 28, 2008

    CREW REPORTS ON PREFLT, NO BELL DURING FIRE TEST. APU HORN IN WHEEL WELL DOES COME ON.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Fire protection · module · malfunctionedJan 28, 2008

    CREW REPORTS ON PREFLT, GET NO BELL DURING FIRE TEST. APU HORN IN WHEEL WELL DOES COME ON. FOUND FAULTY AURAL WARNING MODULE. REPLACED AURAL WARNING MODULE.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Lights · light · inoperativeNov 15, 2007

    EEL LIGHTS AT THE AFT SECTION OF THE CABIN INOP. REPLACED LIGHT ASSEMBLY

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Lights · inverter · inoperativeAug 11, 2007

    THREE SEGMENTS OF EEL LIGHTS INOP AFT CABIN AFT GALLEY. REPLACED INVERTER. OPS CHECKS GOOD.

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

Showing the 10 most recent of 32 reports.

Related aircraft

Show all 8 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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