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Aircraft record

N157UABoeing 747-123

DeregisteredUnclaimedSource: FAA, updated Oct 20, 2026

This N-number isn't registered right now. Below is its last known registration, canceled Jan 3, 2000.

Safety record in brief:1 NTSB incident (minor damage, May 1988)80 ADs may apply8 service difficulty reports

Registration
Deregistered
Last based in
San Francisco, CA
owner city / state
Owners
1
since 1988
NTSB events
1
minor, 1988
ADs may apply
80
confirm with A&P
Service reports
8
since 1995

Registration

FAA Aircraft Registry · Oct 20, 2026
Last registered owner
United Airlines INC
Owner type
Corporation
City, state
San Francisco, CA
Certificate issued
Jan 27, 1988
Canceled
Jan 3, 2000

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
747-123
Serial number
20106
Aircraft type
Fixed wing multi engine
Category
Land
Certification
Type Certificated
Seats
495
Engines
4
Max takeoff weight
20,000 and over lb
Mode S code
A0E5F3

Engine

Type
Turbo-fan

Total time and engine hours aren't public. They appear here once the owner adds logbooks.

Ownership history

Ownership history from FAA records
  1. 1988 – 2000United Airlines INCSan Francisco, CA

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 (1)

Incident · minor damage

May 2, 1988 · Nr Tokyo, PO

UNITED FLT 97 EXPERIENCED INDICATIONS OF UNEVEN FUEL FLOW FROM MAIN TANKS 2 AND 3 AT FL360 BEGINNING ABOUT 4- HOURS AFTER DEPARTURE ON AN 11-HOUR TRANSPACIFIC FLIGHT. THE FUEL SYSTEM HAD BEEN SET UP FOR ALL ENGINE FEED FROM THE NOS 2 AND 3 TANKS. ALTHOUGH IT WAS LATER ESTABLISHED THAT THE NUMBER 2 CROSSFEED VALVE FAILED IN THE CLOSED POSITION, THE S/O INFORMED THE CAPT THAT THE INTRANSIT LIGHT…

Damage
Minor
Injuries
None
Report
DCA88IA056

From NTSB records; matched by serial number.Read NTSB report (search CAROL for DCA88IA056)

ADs published since 1998 that may apply (80)

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
2005-10-21Boeing Model 747 AirplanesJun 23, 2005Airframe (747-123)Certain serial numbers: 747 1–1307; 747 1309–1312; 747 1314. Only with: Limited by line numbers rather than serial numbers.
2005-09-02Boeing Model 747 Series AirplanesMay 10, 2005Airframe (747-123)
2005-03-01Boeing Model 747 Series AirplanesMar 9, 2005Airframe (747-123)
2004-16-05Boeing Model 747 Series AirplanesSep 14, 2004Airframe (747-123)
2004-16-09Boeing Model 747 Series AirplanesSep 13, 2004Airframe (747-123)
Show all 80 ADs
ADSubjectEffectiveApplies to
2004-09-10Boeing Model 747 Series AirplanesJun 4, 2004Airframe (747-123)Only with: Airplanes with lower cargo floors that are not fully enclosed (no panels installed between all roller trays in the cargo compartment).
2004-07-22Boeing Model 747 Series AirplanesMay 12, 2004Airframe (747-123)
2003-26-13Boeing Model 747 Series AirplanesFeb 11, 2004Airframe (747-123)Serial numbers per Boeing Alert Service Bulletin 747-29A2102, dated June 29, 2000
2003-19-08Boeing Model 747 Series AirplanesOct 27, 2003Airframe (747-123)Certain serial numbers: 747 1–1307. Only with: Limited by line numbers 1 through 1307 inclusive.
2003-16-12Boeing Model 747 Series AirplanesSep 22, 2003Airframe (747-123)Serial numbers per Boeing Service Bulletin 747-57A2311, Revision 2, dated February 21, 2002
2003-16-14Boeing Model 747 Series Airplanes Equipped with Pratt & Whitney JT9D-3 or JT9D-7 Series…Sep 22, 2003Airframe (747-123)Serial numbers per Boeing Alert Service Bulletin 747-54A2209, dated November 8, 2001. Only with: Equipped with Pratt & Whitney JT9D-3 or JT9D-7 series engines (excluding JT9D-70 series engines).
2003-16-06Boeing Model 747 Series Airplanes Equipped with General Electric CF6-45 or CF6-50 Series…Sep 12, 2003Airframe (747-123)Only with: Equipped with General Electric CF6-45 or CF6-50 series engines.
2003-13-09Boeing Model 747 Series AirplanesJul 15, 2003Airframe (747-123)Certain serial numbers: 747 1–695. Only with: Limited to line numbers 1 through 695 inclusive.
2003-11-01Boeing Model 747 Series AirplanesJul 3, 2003Airframe (747-123)
2003-10-06Boeing Model 747 Series AirplanesJul 1, 2003Airframe (747-123)Certain serial numbers: 747 1–1255. Only with: Applies to line numbers 1 through 1255 inclusive.
2003-03-19Boeing Model 747 Series AirplanesFeb 20, 2003Airframe (747-123)
2002-26-17Boeing Model 747 Series AirplanesFeb 7, 2003Airframe (747-123)Certain serial numbers: 747 1–750. Only with: Line numbers 1 through 750 inclusive; excludes airplanes with bulkhead splice areas modified per Plan B of AD 2001-11-06.
2002-24-51Boeing Model 737-600, -700, -700C, -800, and -900 Series Airplanes; Model 747 Series…Jan 7, 2003Airframe (747-123)
2002-23-21Boeing Model 747 Series AirplanesJan 6, 2003Airframe (747-123)Serial numbers per Boeing Service Bulletin 747-57-2256, Revision 3, dated June 21, 2001
2002-19-52Boeing Model 737-600, -700, -700C, -800, and -900 Series Airplanes; Model 747 Series…Sep 30, 2002Airframe (747-123)
2002-10-10Boeing Model 747 Series AirplanesJun 27, 2002Airframe (747-123)Serial numbers per Boeing Service Bulletin 747-53-2349, dated June 27, 1991, or Boeing Alert Service Bulletin 747-53A2349, Revision 1
2002-06-02Boeing Model 747 Series AirplanesApr 3, 2002Airframe (747-123)
2001-23-15Boeing Model 747 Series AirplanesDec 31, 2001Airframe (747-123)Certain serial numbers: 747 1–1046; 747 1047–1271. Only with: Line numbers 1 through 1046 only if AD 95-10-16, 95-13-05, 95-13-06, or 95-13-07 has been accomplished; line numbers 1047 through 1271 inclusive regardless.
2001-24-29Boeing Model 747 Series AirplanesJan 16, 2002Airframe (747-123)Serial numbers per Boeing Alert Service Bulletin 747-35A2035, Revision 1, dated July 22, 1999
2001-24-31Boeing Model 747 Series AirplanesJan 16, 2002Airframe (747-123)Serial numbers per Boeing Alert Service Bulletin 747-24A2118, Revision 3, dated June 24, 1999
2001-22-13Boeing Model 737-100, -200, -300, -400, and -500 Series Airplanes; and Model 747, 757…Dec 6, 2001Airframe (747-123)Serial numbers per Boeing Service Bulletin 737-27A1214 Rev 1; Alert Service Bulletins 747-27A2373, 757-27A0129, 767-27A0159, 777-27A0030
2001-21-07Boeing Model 747 Series AirplanesDec 4, 2001Airframe (747-123)Certain serial numbers: 747 1–1251. Only with: Line numbers 1 through 1251 inclusive.
2001-22-04Boeing Model 747 Series AirplanesDec 3, 2001Airframe (747-123)
2001-17-25Boeing Model 747 Series AirplanesOct 3, 2001Airframe (747-123)
2001-15-15Boeing Model 747 Series Airplanes Powered By Pratt & Whitney JT9D-7 Series EnginesSep 4, 2001Airframe (747-123)Serial numbers per Boeing Alert Service Bulletin 747-54A2200, dated July 7, 2000. Only with: Powered by Pratt & Whitney JT9D-7 series engines.
2001-15-03Boeing Model 747 Series AirplanesAug 28, 2001Airframe (747-123)Certain serial numbers: 747 1–1307. Only with: Applies by line numbers 1 through 1307 inclusive.
2001-14-07Boeing Model 747 Series AirplanesAug 16, 2001Airframe (747-123)Serial numbers per Boeing Service Bulletin 747-53A2449, Revision 1, dated May 24, 2001
2001-13-12Boeing Model 747 Series AirplanesAug 3, 2001Airframe (747-123)Serial numbers per Boeing Service Bulletin 747-57A2310, Revision 2, dated February 22, 2001
2001-12-21Boeing Model 747 Series AirplanesJul 26, 2001Airframe (747-123)
2001-11-06Boeing Model 747 Series AirplanesJul 16, 2001Airframe (747-123)Certain serial numbers: 747 1–1254. Only with: Limited to line numbers (L/N) 1 through 1254 inclusive.
2001-11-11Boeing Model 737, 747, and 777 Series AirplanesJul 16, 2001Airframe (747-123)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 (747-123)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.
2000-24-07Boeing Model 747 Series AirplanesJan 8, 2001Airframe (747-123)Certain serial numbers: 747 1–685. Only with: Limited to line numbers 1 through 685 inclusive.
2000-21-06Boeing Model 747 Series Airplanes Equipped with Pratt & Whitney (PW) JT9D-7Q and…Nov 24, 2000Airframe (747-123)Only with: Equipped with Pratt & Whitney JT9D-7Q and JT9D-7Q3 turbofan engines.
2000-17-06Boeing Model 747 and 767 Series Airplanes Equipped With General Electric CF6-80C2 Series…Oct 5, 2000Airframe (747-123)Only with: Equipped with General Electric CF6-80C2 series engines.
2000-15-08Boeing Model 747 Series AirplanesSep 6, 2000Airframe (747-123)Certain serial numbers: 747 1–671. Only with: Limited to line numbers 1 through 671 inclusive.
2000-14-01Boeing Model 747 Series AirplanesAug 23, 2000Airframe (747-123)Serial numbers per Boeing Special Attention Service Bulletin 747-32-2461, dated August 19, 1999
2000-14-11Boeing Model 747 Series AirplanesAug 23, 2000Airframe (747-123)Only with: Equipped with General Electric Model CF6-45 or CF6-50 series engines.
2000-14-06Boeing Model 747 Series AirplanesAug 17, 2000Airframe (747-123)Certain serial numbers: 747 1–1006. Only with: Line numbers 1 through 1006 inclusive.
2000-12-19Boeing Model 747 Series AirplanesJul 28, 2000Airframe (747-123)Serial numbers per Boeing Alert Service Bulletin 747-53A2425, dated October 29, 1998
2000-12-16Boeing Model 747 Series AirplanesJul 5, 2000Airframe (747-123)Serial numbers per Boeing Alert Service Bulletin 747-54A2184, Revision 1, dated May 6, 1999 (Groups 1, 2, and 5)
2000-11-08Boeing Model 747 and 767 Series Airplanes Powered by General Electric Model CF6-80C2…Jul 6, 2000Airframe (747-123)Only with: Powered by General Electric Model CF6-80C2 series engines.
2000-10-17Boeing Model 747 Series Airplanes Equipped With Pratt & Whitney JT9D-70 Series EnginesJun 30, 2000Airframe (747-123)Only with: Equipped with Pratt & Whitney JT9D-70 series engines.
2000-08-14Boeing Model 747 Series AirplanesJun 1, 2000Airframe (747-123)Serial numbers per Boeing Service Bulletin 747-57A2309, Revision 1, dated December 22, 1999
2000-02-37Boeing Model 747 Series AirplanesMar 13, 2000Airframe (747-123)Certain serial numbers: 747 1–1078. Only with: Applies to line numbers 1 through 1078 inclusive.
2000-02-10Boeing Model 747 Series AirplanesMar 7, 2000Airframe (747-123)Serial numbers per Boeing Alert Service Bulletin 747-53A2416, Revision 1, dated May 6, 1999
99-24-16Boeing Model 747 Series AirplanesJan 4, 2000Airframe (747-123)Serial numbers per Boeing Alert Service Bulletin 747-27A2364, dated September 3, 1998
99-20-09Boeing Model 747 Series AirplanesNov 8, 1999Airframe (747-123)Serial numbers per Boeing Alert Service Bulletin 747-71A2277, dated November 29, 1995; or Revision 1, dated May 21, 1998, or Revision 2, dated January 14, 1999
99-08-02 R1Boeing Model 747 Series AirplanesMay 11, 1999Airframe (747-123)Certain serial numbers: 747 1–1124. Only with: Limited by line numbers 1 through 1124 inclusive.
99-11-15Boeing Model 747 Series AirplanesJul 8, 1999Airframe (747-123)Serial numbers per Boeing Service Bulletin 747-27-2367, Revision 1, dated December 17, 1998
99-08-19Boeing Model 747 Series AirplanesApr 27, 1999Airframe (747-123)Certain serial numbers: 747 001–1150. Only with: Line positions 001 through 1150; equipped with a Lear Romec APU fuel boost pump P/N RR24640B.
99-08-01Boeing Model 747 Series AirplanesMay 12, 1999Airframe (747-123)Certain serial numbers: 747 1–886. Only with: Line positions 1 through 886 inclusive; equipped with Pratt & Whitney JT9D-3 or -7, or General Electric CF6-45 or -50 engine struts.
99-07-03Boeing Model 747 Series AirplanesApr 27, 1999Airframe (747-123)Certain serial numbers: 747 1–685. Only with: Line numbers 1 through 685 inclusive.
99-04-01Boeing Model 747 Series AirplanesMar 16, 1999Airframe (747-123)Certain serial numbers: 747 202–886. Only with: Line numbers 202 through 886 equipped with General Electric CF6-45/50 and Pratt & Whitney JT9D-70 series engines, on which the strut/wing modification per AD 95-13-07 has not been accomplished.
99-01-10Boeing Model 747 Series AirplanesJan 15, 1999Airframe (747-123)Certain serial numbers: 747 1–1046. Only with: Line positions 1 through 1046 equipped with Pratt & Whitney JT9D series, General Electric CF6-45/-50 series, or Rolls Royce RB211 series engines; excluding airplanes with strut/wing modifications accomplished per AD 95-10-16, AD 95-13-05, or AD 95-13-07.
98-26-23Boeing Model 747 Series AirplanesFeb 2, 1999Airframe (747-123)Certain serial numbers: 747 1–816. Only with: Line positions 1 through 816 inclusive.
98-13-12 R1Boeing Model 737, 747, 757, 767, and 777 Series AirplanesDec 28, 1998Airframe (747-123)Serial numbers per Boeing Alert Service Bulletins 737-27A1212, 747-27A2368 Revision 2, 757-27A0128, 767-27A0156, 777-27A0029 Revision 1
98-21-17Boeing Model 747 Series Airplanes Equipped with Pratt & Whitney Model JT9D-70 EnginesNov 17, 1998Airframe (747-123)Certain serial numbers: 747 202–396. Only with: Line numbers 202 through 396 inclusive, equipped with Pratt & Whitney Model JT9D-70 engines.
98-18-23Boeing Model 747 Series AirplanesOct 20, 1998Airframe (747-123)Certain serial numbers: 747 1–200. Only with: Line numbers 1 through 200 inclusive having 7079-T6 aluminum latch support fittings.
98-17-13Boeing Model 747 and 767 Series Airplanes Equipped with Rolls-Royce Model RB211-524G/H…Sep 3, 1998Airframe (747-123)Only with: Equipped with Rolls-Royce Model RB211-524G/H engines.
98-16-13Boeing Model 747 Series AirplanesAug 18, 1998Airframe (747-123)Certain serial numbers: 747 1–1157. Only with: Applies to line positions 1 through 1157.
98-14-17Boeing Model 747 Series AirplanesJul 23, 1998Airframe (747-123)Certain serial numbers: 747 001–971. Only with: Line positions 001 through 971 inclusive.
98-13-12Boeing Model 737, 747, 757, 767, and 777 Series AirplanesJul 6, 1998Airframe (747-123)Serial numbers per Boeing Alert Service Bulletins 737-27A1212, 747-27A2368, 757-27A0128, 767-27A0156, and 777-27A0029, dated March 26, 1998
98-10-10Boeing Model 747 and 767 Series AirplanesMay 27, 1998Airframe (747-123)Certain serial numbers: 747 0001–1145; 767 001–689; 767 691. Only with: Ranges are line positions; Model 747 airplanes only if not inspected in accordance with AD 96-26-06 or AD 97-26-07 (Boeing Alert Service Bulletin 747-28A2204).
98-07-15Boeing Model 747 Series AirplanesMay 7, 1998Airframe (747-123)Certain serial numbers: 747 207–1088. Only with: Applies to line numbers 207 through 1088 inclusive.
98-03-10Boeing Model 737, 747, 757, and 767 Series AirplanesFeb 19, 1998Airframe (747-123)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.
98-02-02Boeing Model 747 Series Airplanes Equipped with Pratt & Whitney JT9D-3 and -7 Series…Feb 2, 1998Airframe (747-123)Serial numbers per Boeing Alert Service Bulletin 747-54A2069, Revision 9, dated May 29, 1997. Only with: Airplanes equipped with Pratt & Whitney JT9D-3 and -7 series engines.
97-26-07Boeing Model 747 Series AirplanesDec 29, 1997Airframe (747-123)
97-12-03Boeing Model 747 Series AirplanesJun 24, 1997Airframe (747-123)Serial numbers per Boeing Alert Service Bulletin 747-54A2179, Revision 1, dated November 27, 1996. Only with: Except airplanes on which the strut/wing modification has been accomplished per Boeing Alert Service Bulletin 747-54A2157, 747-54A2158, or 747-54A2159 (original or Revisions 1 or 2).
96-26-52Boeing Model 747 Series AirplanesJan 8, 1997Airframe (747-123)Certain serial numbers: 747 line number 1–line number 1046. Only with: Equipped with Pratt & Whitney PW4000, GE CF6-80C2, or Rolls Royce RB211 series engines; with third generation fuse pins P/N 310U2301-101, -116, -117, or -120 installed at the midspar/spring beam fittings of the engine pylon; and on which the nacelle strut and wing structure modification per Boeing Alert Service Bulletin 747-54A2156 or 747-54A2157 has not been accomplished.
96-26-04Boeing Model 747 Series AirplanesJan 6, 1997Airframe (747-123)Certain serial numbers: 747 1–678. Only with: Line numbers 1 through 678 on which the Section 41 frame replacement in zone 1 per Boeing Service Bulletin 747-53-2272 has not been accomplished.
96-25-01Boeing Model 747 Series AirplanesJan 22, 1997Airframe (747-123)Certain serial numbers: 747 1–886. Only with: Line positions 1 through 886; equipped with Pratt & Whitney JT9D-3, -7, and -70 series engines, General Electric CF6-45/-50 series engines, or Rolls Royce RB211 series engines.
96-03-01Boeing Model 747 Series AirplanesFeb 16, 1996Airframe (747-123)Serial numbers per Boeing Alert Service Bulletin 747-71A2277, dated November 29, 1995
95-13-06Boeing Model 747 Series Airplanes Equipped With General Electric Model CF6-80C2 Series…Jul 28, 1995Airframe (747-123)Certain serial numbers: 747 679–1046. Only with: Line positions 679 through 1046 inclusive, equipped with General Electric CF6-80C2 series or Pratt & Whitney PW4000 series engines.
95-02-13Boeing Model 747 Series Airplanes Equipped With General Electric CF6-80C2 EnginesMar 17, 1995Airframe (747-123)Serial numbers per Boeing Alert Service Bulletin 747-26A2226, dated June 30, 1994, or Revision 1, dated November 23, 1994. Only with: Equipped with General Electric CF6-80C2 engines.

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

Service Difficulty Reports (8)

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 · wire · failedSep 18, 1998

    CEILING EMERGENCY LIGHT INOP AT AFT LAV NR 118 AISLE. REPAIRED WIRE NR W1334-L4762-22 AT LIGHT ASSEMBLY, OP CK OK.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Electrical power · circuit breaker · failedMay 15, 1998

    FIRE FROM NR 2 C/B INS. *S/D* C/B C787 FAILED INTERNALLY. REPLACED BREAKER.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Flight controls · lefdu · failedMar 28, 1998

    LEADING EDGE FLAP LIGHTS STAYED ON DURING FLIGHT UNTIL CREW WENT FROM POSITION ONE, TO FLAP POSITION FIVE. GREEN LIGHT THEN CAME ON AND STAYED ON THROUGH LANDING. *S/D* LEADING EDGE FLAP DRIVE UNIT AT POSITION NR 1 LT FAILED. REPLACED LEFDU AND AIRCRAFT RETURNED TO SERVICE.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
Show all 8 reports
  • Engine · elbow · failedJul 16, 1997

    DURING DESCENT, NUMBER THREE ENGINE OIL QUANTITY WENT TO ZERO AND THE OIL PRESSURE EVENTUALLY REDUCED TO ZERO. AN IN FLIGHT SHUT DOWN OCCURRED. *S/D* THE FLANGED ELBOW ATTACHED TO THE OIL STRAINER HOUSING FAILED. THE CYLINDRICAL PORTION OF THE ELBOW SEPARATED FROM THE FLANGE DETAIL. OIL WAS…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Landing gear · fitting · crackedMar 10, 1997

    MAIN LANDING GEAR (BODY) TRUNNION BACK-UP FITTING WAS CRACKED AND CORRODED. TRUNNION FITTING REPLACED WITH NEW FITTING.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Engine · engine · flamed-outDec 26, 1995

    ENGINE FLAME-OUT ON LANDING.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Airborne auxiliary power · flow divider · malfunctionedAug 15, 1995

    A/C HAD APU TAILPIPE FIRE WHILE AT GATE. REPLACED APU. FLOW DIVIDER (P/N 976000) IN FUEL CONTROL FOUND TO BE STICKING AND THE BLEED DOWN VALVE (P/N 36037) WAS FAILING TO DUMP EXCESS FUEL.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Flight controls · retract mech · malfunctionedMay 24, 1995

    EXPERIENCED LOW NOISE AND SLIGHT PITCH AT FL 350. DURING APPROACH WHEN FLAPS GOING FROM 5 TO 10 AND 10 TO 20 DEGREES, EXPERIENCED CONSIDERABLE VIBRATION.

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

Related aircraft

Show all 7 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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