# N186UA: 1992 Boeing 747-422, registration cancelled 2005-04-07

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: April 7, 2005
- Exported to: France
- Status when cancelled: Valid registration
- Airframe: [Boeing 747-422](https://openairdocs.org/model/boeing-747-422) (registry code 1384935)
- Engine: [Pratt & Whitney PW4000 series](https://openairdocs.org/engine/pratt-whitney-pw4000-series) (registry code 52119)
- Data sheets: [TCDS A20WE](https://openairdocs.org/tcds/A20WE) (OpenAirDocs)
- Serial number: 26875
- Year built: 1992
- Type of aircraft: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: August 23, 1992
- Certificate issued: January 21, 2005
- Last registry action: January 21, 2005
- Mode S code: A158B9
- Owner when cancelled: [Wells Fargo Bank Northwest Na Trustee](https://openairdocs.org/faa-owner/WELLS%20FARGO%20BANK%20NORTHWEST%20NA%20TRUSTEE)
- Location: [Salt Lake City, UT](https://openairdocs.org/faa-place/UT/Salt%20Lake%20City)
- Owner type: Corporation
- Owner's area on the map: 40.7558° N, 111.8843° W: Placed by OpenAirDocs at the center of ZIP code 84111, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N186UA
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=186UA
- Page: https://openairdocs.org/deregistered/N186UA-2005-04-07

From the FAA registry file of November 12, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Boeing 747-422: https://openairdocs.org/model/boeing-747-422.md

## Service difficulty reports (6)

Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

- [SDR 97UAL900161](https://openairdocs.org/sdr/97UAL900161), Feb 26, 1997: INFLATION HOSE. LOOSE. SLIDE/RAFT REMOVED FOR TIME CONTROLLED OVERHAUL. INFLATION HOSES FOUND LOOSE AT ASPIRATOR CONNECTION. SLIDE MAY HAVE NOT INFLATED FULLY IF DEPLOYED. INFLATION H
- [SDR 96UAL900900](https://openairdocs.org/sdr/96UAL900900), Nov 25, 1996: COMPRESSOR. STALLED. NR 3 ENGINE STALLED ON TAKEOFF JUST AFTER LIFTOFF. A/C RETURNED TO FIELD. NO VISIBLE DAMAGE. NO CONTROL SYSTEM FAULTS. SURGE IS ATTRIBUTED TO POOR N2 COMPRESSOR
- [SDR 96UAL900652](https://openairdocs.org/sdr/96UAL900652), Aug 23, 1996: BLADE. FAILED. WHILE IN CRUISE AT FL 370 AND EPR 1.21, STALL CONDITION DEVELOPED. REDUCED THROTTLE AND CONDITION CEASED FOR SHORT TIME, HOWEVER, ENGINE THEN STALLED REPEATEDLY
- [SDR 96UAL900640](https://openairdocs.org/sdr/96UAL900640), Aug 19, 1996: PANEL. CRACKED. LEFT WING LEADING EDGE FIBERGLASS PANEL WAS FOUND WITH A 35 INCH CRACK. CRACK HAD PROPAGATED FROM AN EXISTING 18 INCH CRACK THAT WAS PREVIOUSLY REPAIRED. PANEL 
- [SDR 96UAL900607](https://openairdocs.org/sdr/96UAL900607), Aug 8, 1996: PANEL. CRACKED. ON ARRIVAL TO NRT, THE LEFT WING LEADING EDGE FIBERGLASS PANEL WAS FOUND CRACKED IN TWO PLACES. THE PANEL WAS LOCATED INBOARD OF THE NR 2 ENGINE. CRACK LENGTHS 
- [SDR 95UAL747034](https://openairdocs.org/sdr/95UAL747034), May 16, 1995: ASPIRATORS. DAMAGED. AT DISASSEMBLY FOUND SUD SLIDE TURBO-FAN ASPIRATORS WITH BLADE DAMAGE. ADDITIONALLY, THE FLAPPER VALVE ROD FELL OUT. REPLACED 2 EACH TURBO FANS ASPIRATORS AND F

## NTSB investigations (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB LAX94LA141](https://openairdocs.org/ntsb/LAX94LA141), Feb 12, 1994: Boeing 747-400 (N186UA), Pacific Ocean (Pacific Ocean), no damage. Probable cause: the failure of the chief steward to verify that all flight attendants had been informed, and were complying with the captain's instructions to remain seated with their seatbelts fastened.

## FAA accident and incident reports (1)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 19940212014219A](https://openairdocs.org/incident/19940212014219A), Feb 12, 1994: Boeing 747422 (N186UA), Pacific Ocean, CA. While deviating around thunderstorms severe turbulence encountered causing serious injury to flight attendant.

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