Accident Details
Probable Cause and Findings
The flight instructors failure to maintain main rotor RPM and improper flare, which resulted in a hard landing.
Aircraft Information
Registered Owner (Current)
Analysis
The 11,500-hour helicopter flight instructor reported he was instructing a 9,500-hour airline transport rated pilot at a private training runway (2,000-feet long by 75-feet wide asphalt runway). During a practice autorotation, the flight instructor stated that the helicopter experienced a hard landing as a result of low rotor RPM during touchdown. The flight instructor also reported there were no abnormalities with the helicopter's flight controls, or engine at the time of the accident. The winds at the time of the accident were reported as light and variable. The density altitude was estimated at 750-feet mean sea level (MSL).
Data Source
Data provided by the National Transportation Safety Board (NTSB). For more information on this event, visit the NTSB Records Search website. NTSB# DFW06CA058