Schweizer 269C Safety Record

The dual student's failure to maintain rotor speed during the recovery from the intentional autorotation and the flight instructor's delayed remedial action. Contributing factors were the flight crew's intentional autorotation and dual student's misjudged flare.

The reduction of the throttle to idle at a high density altitude during a practice autorotation, which resulted in the engine stoppage. Factors contributing to the accident included the instructor pilot's improper planning by not adhering to the flight manual's warning to avoid reducing the throttle to the idle position at high density altitudes, and the uneven terrain.

The flight instructor's delay in taking remedial action which led to the hard landing during the practice autorotation. The misjudged glide path, the dual student restricting the throttle control, and the trees were factors in the accident.

The improper landing flare by the pilot-rated student and the inadequate supervision of the pilot-rated student by the certified flight instructor, resulting in the improper touchdown of the helicopter and the helicopter rolling over.

The binding of the main rotor blade's tachometer cable during cruise flight resulting in an observed split tachometer indication/aural alarm and perceived mechanical emergency and the unsuitable terrain the pilot encountered during the emergency landing. A factor was the rocky terrain.

The pilot's improper use of the flight controls (collective pitch and cylic controls) during a take off to a hover resulting in the helicopter encountering dynamic roll over and rolling over on its right side.

the student pilot's failure to maintain control of the helicopter during the landing. Contributing to the accident was the flight instructor's inadequate supervision of the student pilot.

a loss of engine power due to the Designated Pilot Examiner's failure to follow the flight manual procedures and directives regarding throttle settings to be used for practice autorotations.

The pilot's inadvertent loss of tail rotor effectiveness during takeoff to a hover and aborted landing in a grass area resulting in the grass catching fire from the engine exhaust and the helicopter being consumed by fire.

the failure of maintenance personnel to correctly service the forward landing gear strut dampers in accordance with the manufacturer's maintenance instructions.

The student pilot's failure to maintain control of the helicopter and the instructor's inadequate supervision of the flight by his delay in taking remedial action.

The student pilot's failure to maintain control of the helicopter, which resulted ground resonance. Contributing to the accident was the improperly serviced landing gear dampers.