NTSB Identification: ANC10LA020
Nonscheduled 14 CFR Part 135: Air Taxi & Commuter
Accident occurred Saturday, March 06, 2010 in Delta Junction, AK
Probable Cause Approval Date: 04/12/2011
Aircraft: MCDONNELL DOUGLAS HELICOPTER 369E, registration: N26TC
Injuries: 1 Serious,3 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 pilot reported that he was in cruise flight when he heard a “pop” and the engine lost all power. He initiated an autorotation to a clearing, but was unable to reach it and had to land in an area with trees. The helicopter struck treetops during the descent and landed hard, sustaining structural damage. A postaccident inspection, including running the engine in a test cell, disclosed ample uncontaminated fuel, and no evidence of any preimpact mechanical problems with the helicopter’s engine or systems.

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

A total loss of engine power in flight for undetermined reasons.

Full narrative available

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