NTSB Identification: ANC96LA045.
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Accident occurred Saturday, April 06, 1996 in DELTA JUNCTION, AK
Probable Cause Approval Date: 09/19/1996
Aircraft: McDonnell Douglas H-369, registration: N58268
Injuries: 1 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 pilot noted an unscheduled spool down during cruise flight, and initiated an autorotation. After lowering the collective pitch, he noticed that the engine was still producing power. He applied collective pitch and attempted to climb out. However, the engine again spooled down, and another autorotation was made. Subsequently, the helicopter touched down with forward speed and nosed over. The pilot stated the engine was still running after touchdown, and he performed an engine shutdown. During a subsequent engine test run at Allison, the engine started, accelerated, and decelerated normally. Maximum power output was 4.9 percent below normal. No other discrepancies were found.

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

loss of engine power for an undetermined reason.

Full narrative available

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