NTSB Identification: CEN10CA362
14 CFR Part 91: General Aviation
Accident occurred Thursday, June 24, 2010 in Grand Junction, CO
Probable Cause Approval Date: 03/16/2011
Aircraft: HILLER UH-12E, registration: N9754C
Injuries: 1 Minor.

NTSB investigators used data provided by various entities, including, but not limited to, the Federal Aviation Administration and/or the operator and did not travel in support of this investigation to prepare this aircraft accident report.

The helicopter had recently undergone an annual inspection and about a month thereafter the pilot planned to take it for a test flight. After completing an engine run-up, he noted that the helicopter appeared to be operating well. The pilot elected to perform a hover-taxi to a nearby helipad, which consisted of a flight path that would overfly a storage container. As he flew past the container, the helicopter’s engine experienced a total loss of power and he landed in a bark pile. During a postaccident visual examination by Federal Aviation Administration inspectors, they could not determine any problems with the helicopter’s engine. The pilot reported that following the helicopter being recovered he found a plug covering the fuel tank's vent line. The pilot opined that the plug resulted in the loss of power.

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

The total loss of engine power for undetermined reasons.

Full narrative available

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