Original Message

About tailboom stuff, I had a 135 training captain put in a boatload of left pedal as a stuck pedal problem while 'zipping' along at 120 knots to which I asked if he was of mind to separate the tail boom.  Definitely in the area of test pilot parameters when doing that stuff.  We agreed to knock it off.

Not to be deterred he persisted at other operations to find cracks in the tail boom just forward of the horizontal stab and at the lower part of the vertical fin.  The practice stopped.  What happens when training pilots do not understand what they are doing.  

Some things best left to the simulators.