The cause of the accident was that the parachutist, for reasons which have not been determined, did not control his descent so as to avoid landing on an unsuitable area.

A detailed examination of the wreckage disclosed no evidence of any pre-existing defect or malfunction of the aircraft which may have contributed to the accident.

Speed and height were lost and the aircraft collided with trees, struck the ground and came to rest in the water at the edge of the lake.

Student pilot outside training area made low pass over property. Aircraft struck power lines-pitched to ground.

The glider turned to the right and the angle of bank continued to increase until the wings were near vertical. The nose dropped rapidly and the glider assumed a nose down inverted attitude. As it dived towards the ground the attitude changed and the glider finally assumed a steep nose down Inverted attitude until it struck the ground.

The pilot lost control of the glider during a turn and recovery could not be effected in the height available. The probable cause of the loss of control was that buffet, induced by aileron flutter, masked the pre-stall buffet which normally provides stall warning.

The cause of the accident was that the pilot did not maintain an adequate margin of airspeed in the conditions that prevailed.

The pilot lost control of the glider during a turn and recovery could not be effected in the height available. The probable cause of the loss of control was that buffet, induced by aileron flutter, masked the pre-stall buffet which normally provides stall warning.

Examination of the aircraft wreckage revealed that the flaps were in the fully extended position. Performance data in respect of the aircraft type indicates that, had the flaps of VH-SVD been retracted at an early stage of the abandoned approach, it would have been possible for the aircraft to have outclimbed the terrain into which it crashed.

The cause of the accident was an in-flight activation of the rapid deflation system. A possible explanation is that the activation occurred when, following an encounter with a 'willy willy', spinning of the envelope and basket resulted in the chimney control line entangling with the twisting basket and burner suspension lines.