NTSB Identification: CEN09CA203
14 CFR Part 91: General Aviation
Accident occurred Friday, February 27, 2009 in Lancaster, TX
Probable Cause Approval Date: 05/12/2009
Aircraft: BELL 407, registration: N2592T
Injuries: 4 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 commercial pilot was practicing a forced landing with a certified flight instructor (CFI) providing instruction. After the maneuver was initiated, the CFI recognized the helicopter was not settling quickly enough so he limited the amount of collective the commercial pilot could apply. As the helicopter slowed, the main rotor revolutions per minute (rpm) slowed. After the rear of the skids touched down the main rotor rpm continued to decay, and the front of the skids dropped eight to 10 inches onto the runway. During the landing two main rotor blades contacted both auxiliary fins on the tail boom. Examination of the damaged main rotor blades revealed substantial damage due to delamination and inner core damage on both blades.
The National Transportation Safety Board determines the probable cause(s) of this accident to be: The failure of the pilot to maintain adequate main rotor rpm and the failure of the CFI to provide appropriate instruction during the maneuver. Full narrative available
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