The pilot reported that the engine stopped in the cruise at about 600 ft. He entered autorotation and landed in low trees and scrub. The engine stopped because the crank shaft drive gear bolt failed due to hydrogen embrittlement. When the bolt failed drive to the accessories was lost. The manufacturer has verbally assured CASA that this was an isolated instance of a bolt failure.
|Date:||04 April 1998||Investigation status:||Completed|
|State:||Victoria||Occurrence type:||Forced/precautionary landing|
|Release date:||24 June 1998||Occurrence category:||Accident|
|Aircraft manufacturer||Robinson Helicopter Co|
|Damage to aircraft||Substantial|
|Departure point||Lilydale Vic.|