Sorry M ... in spite of the advice offered by many Flight Manuals, establishing a simple autorotation following T/R failure WILL NOT produce a safe touch down. Yes ... a first vital action is to get rid of the cause of the yaw - the engine - but if no further action is taken the airframe commences a yaw in the direction of the main blades and it doesn't matter much if you strike the ground spinning left or right, the impact will hurt. Unhappily or happily, I've experienced three T/R failures and managed a non-damaging run-on landing on each occasion ... an experience that at least taught me something. For a non-damaging landing on the more popular types, a combination of speed, yaw angle and power needs to be used, an emergency exercise I teach to my new pilots when asked. Safe flying to all please. DRK.