NTSB Identification: SEA87IA127.
The docket is stored on NTSB microfiche number 33854.
Scheduled 14 CFR operation of PACIFIC SOUTHWEST AIRLINES INC
Incident occurred Sunday, June 28, 1987 in LAS VEGAS, NV
Probable Cause Approval Date: 07/10/1989
Aircraft: BRITISH AEROSPACE BAE-146-100, registration: N146AP
Injuries: 1 Minor,81 Uninjured.

NTSB investigators used data provided by various sources and may not have traveled in support of this investigation to prepare this aircraft incident report.

DURING PUSHBACK AND WHILE STARTING THE #4 ENGINE THE AUXILIARY POWER UNIT WHICH PROVIDES ELECTRICAL POWER TO THE ENGINE STARTER TRIPPED OFF THE LINE. THE LOSS OF ELECTRICAL POWER TO THE ENGINE STARTER RESULTED IN A HUNG START AT APPROXIMATELY 25% N2 RPM. WITHOUT ELECTRICAL POWER TO THE STARTER THE ENGINE COULD NOT BE MOTORED CONSEQUENTLY POOLED FUEL CONTINUED TO BURN WITHIN THE ENGINE COMPARTMENT. THE CREW WAS ADVISED OF THE FIRE CONDITION, DISCHARGED THE #4 ENGINE FIRE EXTINGUISHER AND ORDERED AN EVACUATION OF THE AIRCRAFT. THE FIRE TERMINATED SHORTLY AFTER THE COMMENCEMENT OF THE EVACUATION.

The National Transportation Safety Board determines the probable cause(s) of this incident to be:

AUXILIARY POWER UNIT..POPPED/TRIPPED

The National Transportation Safety Board determines the probable cause(s) of this incident to be:

ENGINE ACCESSORIES,ENGINE STARTER..DISCONNECTED

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