NTSB Identification: ANC88LA015.
The docket is stored on NTSB microfiche number 34592.
Nonscheduled 14 CFR
Accident occurred Wednesday, October 28, 1987 in ILIAMNA, AK
Probable Cause Approval Date: 05/19/1989
Aircraft: PIPER PA-32-301, registration: N43639
Injuries: 2 Minor.

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

THE ACFT ENG LOST OIL PRESSURE DURING CRUISE. THE PLT ATTEMPTED TO LAND ON A SMALL AIRSTRIP. HE DID NOT MAKE IT TO THE STRIP AND OVERRAN NEARBY TUNDRA INTO ILIAMNA LAKE. THE OIL PUMP HOUSING WAS BROKEN; ONE GEAR WAS SPLIT AND THE OTHER HAD A BROKEN TOOTH. THE TEARDOWN OF THE OIL PUMP REVEALED AN OUT OF BALANCE AND WORN OIL PUMP DRIVE SHAFT.

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

LUBRICATING SYSTEM..LOSS,TOTAL

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

LUBRICATING SYSTEM,OIL PRESSURE PUMP..FAILURE,TOTAL

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

FLUID,OIL..STARVATION


Contributing Factors

TERRAIN CONDITION..TUNDRA


Contributing Factors

PROPER GLIDEPATH..NOT MAINTAINED..PILOT IN COMMAND

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