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 pilot's improper autorotation following an actual loss of engine power during a practice autorotation, which resulted in a hard landing. A factor associated with the accident was the loss of engine power at the beginning of the practice autorotation for an undetermined reason.

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.

Loss of engine power due to the failure of the number 3 connecting rod bearing. A contributing factor was the lack of suitable terrain for the emrgency landing.

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 flight instructor's delayed remedial action. A factor was the flight instructor's failure to ensure that both pilots knew who was performing the maneuver.

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 flight instructor's failure to maintain control of the helicopter during the attempted autorotation after the loss of engine power for reasons undetermined. Contributing factors include the flight instructor's improper preflight planning, the high density altitude, and the attempted autorotation.

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 fatigue fracture of the main transmission drive pinion. Also causal was the manufacturer's failure to remove the affected pinions from service during the period that transpired between the initial failures and the accident flight.

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.