When flying the AH-99, I find I am losing the tail rotor ("ATRQ") very often, just by reflexively trying to correct for side-slip.
Example video: http://www.youtube.com/watch?v=GkNCxD6HXII&t=3m40s
Taking into account that real Comanche should be able to do a strafe at around 180 kph (#9780), the Comanche/Blackfoot's fenestron must have quite a lot of power and should not be knocked out just by using its full authority