I'd say Stan's analysis of this accident is right
on. He's the only one that has come up with a reasonable
sequence of events that could lead to the known results.
We hit a violent shear in the same area, the day before
this accident. It rolled our ASH-25 up on one wing.
If we hadn't taken immediate corrective action (aileron
& rudder against the roll) I could see us entering
a spiral dive. As we are learning, once the nose is
down in a big ship, you are headed for a moment of
truth.

JJ Sinclair


At 13:42 06 July 2005, Bert Willing wrote:
I'd say that his analysis is questionable, at least.
It sounds like written by somebody who is astonished
that a 26m ship might
handle in some situations differently than a 15m ship,
and that if there is
any accident evolving of this, the designer of the
ship should be
responsible (and not improper pilot reactions).

And to the subject of pulling the airbrakes at vne
pull-ups: If the max
g-load at vne is lower with airbrakes extended than
without, it's written in
the manual. In any case, coming out of a spiral dive
/ spin combo with such
a ship, you are pretty sure that you will come _at
least_ close to vne
and/or max g-load. A pilot pulling the airbrakes _and_
pulling hard up in
such a situation hasn't thought about such a situation
beforehand (not
good), or has no idea what he is playing with (also
no good).
--
Bert Willing

ASW20 'TW'


'Bill' a écrit dans le message de news:
.com...
I posted the message below on the thread, 'Nimbus 4DT
accident 31 July
2000 in Spain.' I am posting it again for better visibility.

Stan Hall presented his analysis of the Nimbus-4DB
accident in Minden,
NV, 1999. Stan's analysis is scary, to say the least.

The article, Probing for the Smoking Gun, was reprinted
in the Soaring
Association of Canada's free flight, 2/04. Go to the
link below. Click
on free flight on the side bar. Go to free flight
back issues - 2004 -
issue 2. Down load the PDF file.

http://www.sac.ca/

Bill Feldbaumer 09