NTSB Identification: ATL87LA121.
The docket is stored on NTSB microfiche number 34044.
Accident occurred Tuesday, April 21, 1987 in BAY MINETTE, AL
Probable Cause Approval Date: 05/19/1989
Aircraft: BELL UH-1B, registration: N88987
Injuries: 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.

DURING A LOGGING OPERATION, THE HELICOPTER EXPERIENCED A COMPLETE ENGINE FAILURE SHORTLY AFTER ATTEMPTING A PICKUP. THE PILOT ENTERED AN AUTOROTATIVE GLIDE. THE HELICOPTER IMPACTED THE WATER AND SANK. THE WRECKAGE EXAMINATION DISCLOSED THAT THE COMPRESSOR TURBINE HAD SHIFTED FROM ITS NORMALLY INSTALLED POSITION WHICH CAUSED THE POWER FAILURE. THE ENGINE HAD ABOUT 980 HOURS SINCE IT'S LAST OVERHAUL.

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

COMPRESSOR ASSEMBLY..FAILURE,TOTAL

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