I agree, that 's the reason why Army has a full flight simulator in Le Luc. Some failures like the loss of tail rotor are easy to demonstrate, the replay mode is an amazing training device too.
Why risking to destroy a 4 millions dollars or more ship by doing a full autorotation for training purpose!!!! A FFS authorizes a much better training.
In France, only the test pilot have the right to perform full autorotation with twin engines like puma, super puma , twinstar etc...