N186UA

Cancelled 2005

Deregistered aircraft · 1992 Boeing 747-422 · Pratt & Whitney PW4000 series

Cancelled
April 7, 2005
Exported to
France
Status when cancelled
Valid registration
Serial number
26875
Year built
1992
Type
Fixed wing multi engine
Engine
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 type
Corporation

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.

NTSB investigations · 1

Matched to this aircraft by N186UA and the event date: up to this one’s cancellation.

FAA incident reports · 1

FAA accident and incident reports matched to this aircraft by N186UA and the event date: up to this one’s cancellation.

Service difficulty reports · 6

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

SDR 97UAL900161Inflation Hose · looseSLIDE/RAFT REMOVED FOR TIME CONTROLLED OVERHAUL. INFLATION HOSES FOUND LOOSE AT ASPIRATOR CONNECTION. SLIDE MAY HAVE NOT INFLATED FULLY IF DEPLOYED. INFLATION HOSES TIGHTENED. THIS IS SECOND INCIDENT OF LOOSE INFLATION HOSES. UNITED WILL CONDUCT A SAMPLEFeb 26, 1997 · N186UA · Boeing 747422 · Escape SlideSDR 96UAL900900Compressor · stalledNR 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 PERFORMANCE. ENGINE TO BE REFURBISHED. ENGINE REPLACED.Nov 25, 1996 · N186UA · Boeing 747422 · Turbine Engine Compressor SectionSDR 96UAL900652Blade · failedWHILE 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. ENGINE SHUT DOWN. HIGH PRESSURE COMPRESSOR STAGE 5 BLADE FAILED. REPLACED ENGINE. PART TOTAL Aug 23, 1996 · N186UA · Boeing 747422 · Turbine Engine Compressor SectionSDR 96UAL900640Panel · crackedLEFT 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 IS LOCATED INBOARD OF THE NR 2 ENGINE. ACCOMPLISHED REPAIR PER GN-MM.Aug 19, 1996 · N186UA · Boeing 747422 · Wing, Plate/SkinSDR 96UAL900607Panel · crackedON 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 WERE MEASURED TO 18 INCHES AND 5 INCHES. INVESTIGATION FOUND THAT ONLY THE UPPER SKIN WAS AFFECTEAug 8, 1996 · N186UA · Boeing 747422 · Wing, Plate/SkinSDR 95UAL747034Aspirators · damagedAT DISASSEMBLY FOUND SUD SLIDE TURBO-FAN ASPIRATORS WITH BLADE DAMAGE. ADDITIONALLY, THE FLAPPER VALVE ROD FELL OUT. REPLACED 2 EACH TURBO FANS ASPIRATORS AND FLAPPER VALVE ROD.May 16, 1995 · N186UA · Boeing 747422 · Escape Slide