There's also Loss of Tail Rotor Effectiveness[1] (LTE), caused by the tail rotor entering a vortex ring in much the same way the main rotor is affected in settl

There's also Loss of Tail Rotor Effectiveness[1] (LTE), caused by the tail rotor entering a vortex ring in much the same way the main rotor is affected in settling with power. LTE will cause a helicopter to yaw sharply in a direction opposite the main rotor's rotation. The position of the wreck, with the tail broken over a wall, makes me think there might have been a yaw problem. Or they might have been in a high hover, had a problem, and hit the wall on the way down. [1] http://en.wikipedia.org/wiki/Loss_of_tail-rotor_effectiveness http://en.wikipedia.org/wiki/Loss_of_tail-rotor_effectivenes...