Rich Ahrens wrote in news:47917ed9$0$27498
:

Bertie the Bunyip wrote:
Hmm. Wel, i'vw seen very badly damaged wings repaired. Not as bad as
that, mind you.
We have an airplane that got bent bad a couple of years ago. Took them
about five weeks to repair, bu tthe gear didn't go through the wing,
either.
Our one flies like a banana.

That doesn't sound like a ringing endorsement.


It isn't. But it does fly.
It's pretty easy to bend the things. in fact, we take off pressurised. just
a bit, not too much. .125 PSI as soon as we start engines, in fact. The
reason for this is to add structural rigidity to the fuse when it's
rattling down the runway.
To get an idea of how this works, take a 2 quart mostly empty coke bottle
and try and bend it with the top off. Now put the top on and shake it and
try again...

We can take off unpressurised ( for performance. having the engnes provide
some pressurisation uses power) but it's preferable to go lightly
prssurised.


Bertie