NTSB Identification: WPR13CA107
14 CFR Part 91: General Aviation
Accident occurred Wednesday, January 30, 2013 in Kona, HI
Probable Cause Approval Date: 05/09/2013
Aircraft: ROBINSON R22, registration: N333PJ
Injuries: 2 Uninjured.

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 pilot was practicing an autorotation when the main rotor rpm decayed. The flight instructor took control of the helicopter and attempted to correct the low main rotor rpm. However, the helicopter landed hard in a nose-high attitude, which resulted in structural damage to the tailboom. The pilot reported no preimpact mechanical malfunctions or failures with the helicopter that would have precluded normal operation.

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

The pilot’s failure to maintain adequate main rotor rpm during a practice autorotation and the flight instructor's delayed action, which resulted in a hard landing.

Full narrative available

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