To All,
Was I imagining what I read about the accident? Wasn't flutter mentioned as
part of the failure equation? If high frequency flutter occurred in flight,
might that have caused, maybe, the debonding of the TP6 sleeve. Then the same
high frequency flutter of the tailplane might have allowed the tailplane to
"walk" on the torque tube. It could only go in one direction, outboard, and
would not have to go very far before TP13 drive pins disengaged. Once
disengaged, what would the tailplane behave like? Would the flutter drive the
tailplane up and down so quickly without the mass balance weight as to cause
the
tailplane to fail? Or could the aerodynamics from the loose tailplane force the
tail up, with the pilot countering this force with the other tailplane? Would
it equalize to a controllable point while in flight? A question for the
investigators, "Was the pip pin still in it's hole in the torque tube?"
Mike Duane A207A
Redding, California
XS Conventional Gear
Jabiru 3300
Sensenich R64Z N
Ground Adjustable Prop
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