NTSB Identification: ANC89LA088.
The docket is stored on NTSB microfiche number 39236.
Accident occurred Saturday, June 10, 1989 in NAKED ISLAND, AK
Probable Cause Approval Date: 07/09/1990
Aircraft: PIPER PA-24, registration: N9213P
Injuries: 1 Minor,1 Uninjured.

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 AIRPLANE WAS CRUISING AT 10,000 FT MSL WHEN THE PLT NOTICED A LOSS OF MANIFOLD PRESSURE. HE DESCENDED TO 5000 FT, WHERE THE TEMP WAS 38 DEG F, BUT THE MANIFOLD PRESSURE DID NOT GET ABOVE 20' HG. SUBSEQUENTLY, THE ENG STOPPED PRODUCINGPOWER & THE PLT WAS FORCED TO DITCH THE ACFT IN PRINCE WILLIAM SOUND NEAR NAKED ISLAND. THE PLT & PAX WERE RESCUED BY A NEARBY BOAT CREW & TREATED FOR HYPOTHERMIA. THE ACFT SANK IN DEEP WATER & WAS NOT RECOVERED.

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

ENGINE FAILURE FOR AN UNKNOWN REASON.

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