Just a Theory
Spoke to a pilot who was in one of the first 407 tailrotor seperation accidents.He managed to land the beast in one peace.
This is his explenation:
"I was flying along by myself doing about 126kts indicated when all of a sudden the tail yawed to the left. I entered a auto and landed safely.My explenation is that the leading edge on the t/r blade delaminated causing enough friction to brake the shaft.The blades then flaped excessively and cut off the tail with the remaining momentum."
He's theory did sound convincing.
Could this be true
