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Aircraft record

N525AU1988 Boeing 737-3B7

DeregisteredUnclaimedSource: FAA, updated Oct 20, 2026

This N-number isn't registered right now. Below is its last known registration, canceled Nov 6, 2007.

Safety record in brief:No NTSB accidents or incidents since 198221 ADs may apply118 service difficulty reports

Registration
Deregistered
Last based in
Wilmington, DE
owner city / state
Engine
CFM56 SERIES · 9,800 lb thrust
Ge
Owners
1
since 2006
NTSB events
None
since 1982
ADs may apply
21
confirm with A&P
Service reports
118
since 1995

Registration

FAA Aircraft Registry · Oct 20, 2026
Last registered owner
737 Portfolio Trust
Owner type
Corporation
City, state
Wilmington, DE
Certificate issued
Oct 26, 2006
Canceled
Nov 6, 2007
Airworthiness
Standard · Transport
Airworthiness date
Jun 6, 1988

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
737-3B7
Year
1988
Serial number
23860
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
A69B94

Engine

Make and model
Ge Cfm56 Series
Type
Turbo-fan
Power
9,800 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. 2006 – 2007737 Portfolio TrustWilmington, DE

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 (737-3B7)
2002-20-07 R1Boeing Model 737 Series AirplanesNov 12, 2002Airframe (737-3B7)
2002-20-07Boeing Model 737 Series AirplanesNov 12, 2002Airframe (737-3B7)
2001-11-11Boeing Model 737, 747, and 777 Series AirplanesJul 16, 2001Airframe (737-3B7)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 (737-3B7)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 (737-3B7)
2000-22-02 R1Boeing Model 737 Series AirplanesNov 13, 2000Airframe (737-3B7)
2000-22-02Boeing Model 737 Series AirplanesNov 13, 2000Airframe (737-3B7)
2000-15-16Boeing Model 737, 757, 767, and 777 Series AirplanesSep 12, 2000Airframe (737-3B7)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 (737-3B7)
99-22-16Boeing Model 737 Series AirplanesDec 7, 1999Airframe (737-3B7)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 (737-3B7)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 (737-3B7)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 (737-3B7)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 (737-3B7)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 (737-3B7)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 (737-3B7)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 (737-3B7)
97-05-10Boeing Model 737 Series AirplanesMar 19, 1997Airframe (737-3B7)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 (737-3B7)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 (737-3B7)

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

Service Difficulty Reports (118)

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 · skin · crackedMar 27, 2007

    FOUND 3 INCH CRACK AT STA 767 STR 21L SKIN. REPAIRED PER SRM 53-00-01, REPAIR 31, TR 53-60-03A.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Fuselage · skin · crackedMar 26, 2007

    A 1 INCH CRACK FOUND RT SIDE OF FUSELAGE, STA 767, STR 21R. REPAIRED AS PER BAC SRM 53-00-01 REPAIR 31.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Landing gear · lamp · burned outNov 30, 2006

    PIT FLT1904 - ON APPROACH TO PIT FROM CLT, DURING GEAR EXTENSION, CAPTAIN REPORTED HE DID NOT RECEIVE GREEN LIGHTS FOR ALL THREE OF THE GEAR. THE RIGHT MAIN LANDING GEAR INDICATION LIGHT WOULD NOT ILLUMINATE. CREW REQUESTED A FLY-BY THE ATC TOWER FOR VISUAL CHECK. TOWER CONFIRMED GEAR TO BE DOWN.…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
Show all 10 reports
  • Fuselage · skin · crackedOct 16, 2006

    AT 2 INCHES FWD OF BS 727E AT S24R CRACK. INSTALLED REPAIR DOUBLER IAW EA 98168, DEFECT SIZE: 2 INCHES.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Wings · spar · crackedNov 22, 2005

    LBL 135.5, 12 INCHES FWD FROM REAR SPAR CRACKED. MAJOR REPAIR, REMOVED DAMAGE, INSTALLED REPAIR TEE, FILLERS, AND VERT STIFFENER IAW EA 97047. DEFECT SIZE: 1.5 INCH.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Fuselage · angle · corrodedNov 15, 2005

    LEFT TRANSITION ANGLE, STA 727D-807 CORRODED. FABRICATED NEW TRANS ANGLE AND INSTALLED IAW SRM 53-60-53, SRM 51-10-02. DEFECT SIZE: .500 INCH AREA CORROSION AT EACH FASTENER.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Fuselage · floor support · corrodedNov 15, 2005

    BS 500D BETWEEN 26L AND 26R CORRODED. REMOVED DAMAGED PART AND INSTALLED NEW ANGLE IAW SRM 53-30-53 AND SRM 53-00-53. DEFECT SIZE: CORROSION AREAS APPROXIMATELY 1 INCH IN DIAMETER.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Fuselage · angle · corrodedNov 15, 2005

    TOP OF TRANSITION ANGLE BETWEEN STA 767 AND 787 CORRODED. REMOVED DAMAGED SECTION, FAB AND REPLACED WITH NEW SECTION IAW SRM 51-10-2 & BOEING DWG 65-47957. DEFECT SIZE: SPOTS OF CORROSION APPROXIMATELY .125 INCH IN DIAMETER.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Fuselage · door frame · crackedNov 15, 2005

    AFT CARGO DOOR FRAME AFT WEBBING CRACKED. FABRICATED AND INSTALLED NEW WEBBING IAW SRM 51-70-13. DEFECT SIZE: 1 INCH CRACK.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Fuselage · angle · corrodedNov 15, 2005

    RBL 13.80, STA 787-847 CORRODED. CUT OUT DAMAGED SECTION AND SPLICE IN NEW SECTION IAW SRM 53-00-53 FIG 201. DEFECT SIZE: 6 INCH CORROSION.

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

Showing the 10 most recent of 118 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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