NTSB Identification: CEN13LA360
14 CFR Part 91: General Aviation
Accident occurred Wednesday, June 19, 2013 in Danbury, TX
Probable Cause Approval Date: 12/02/2013
Aircraft: ENSTROM F-28A, registration: N485PM
Injuries: 2 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 had just taken off in the helicopter when the pilot and the flight instructor heard a loud “bang,” and the engine lost total power. The flight instructor took control of the helicopter and initiated an autorotation to available terrain from a low altitude; however, when the helicopter touched down, it encountered a rut and rolled over on its right side. The main rotor blades were destroyed, and the tail boom was severed. Postaccident examination of the engine revealed that a connecting rod had failed. The reason the connecting rod failed could not be determined during postaccident examination.

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

The total loss of engine power due to the failure of a connecting rod for reasons that could not be determined during postaccident examination.

Full narrative available

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