Louis,
The following is from my posting to the affected owners' group on the
Starduster BB:
"With due deference to the FAA and their own on-going
investigation, I cannot wait any longer to pass on the following
thread from our incident in December 2002. The fatal June 16th crash
of 363J absolutely confirms to us that torque rolls are at, or beyond,
the performance envelope of the Acroduster Too. We will provide post
crash control system photos and other supporting documentation in due
course. Meanwhile be cautioned, warned, whatever, that the aileron
control system as designed and built into our example SA-750 will bend
and jam in an extended tailslide with aileron deflections as used in
torque rolls. DON'T do them! "
I am reliably told that The Eagle's aileron control linkage is
simpler, more direct and lacks the inboard reversing bellcrank found
in the Acroduster. That plus several other design differences mean
that our "no torque roll" warning is probably not applicable to an
Eagle.
One of the lessons of the accident is the value of having a few
parachute jumps. Any hesitation to jump and there would have no doubt
been two fatalities. The passenger had about 10 jumps prior to this
flight. He had approximately 3 seconds under the chute before landing
in a tall Cypress tree. Go to your local jump school and have fun!
Your question about the affect of an open cockpit versus a
canopy is interesting in several regards but subject for a future
note. (You don't just climb into an Acroduster Too, you put it on like
a suit. When egress time comes you cannot simply dump the canopy,
stand up, and step out. You must extract yourself from the cockpit.
Kevin practiced this after shutdown at the end of every flight.) The
issues are both ergonomic and aerodynamic = future note.
Frank