psm(at)att.net
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 Posted: Fri Aug 06, 2010 4:21 am Post subject: Back to the XL design question - was Zenith.aero down |
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Hi Bryan,
I think you should blame me and my faulty memory rather than the FAA guy you
never met for any errors in the XL story. I have spoken with this guy twice
now (this year at OSH and last year at Sun n Fun) and my BS dectors didn't
go off at all. I am not a very trusting soul. This guy impressed me as a
straight shooter.
Anyway, the really important part of my interaction with this guy has to do
with the engineering reviews the FAA performed on the XL design. The short
and most important part of this, to me, is the fact they did a thorough
review of the design and found it lacking. They notified Zenair and the
world of the deficiencies they found. Zenair produced the upgrade design.
Then the same FAA engineers did another thorough review and pronounced the
new design sound.
I'm sure that is what the FAA guy told me. I reread the FAA document
describing this story and found the details in the document consistent with
his verbal description. He put a different twist on the information that
convinced me the design problem was indeed found and fixed. I just didn't
get that from my first reading of the language in the document.
I have no idea what your experience with the XL design is or what your
qualifications are. I do believe the same FAA engineers who give certified
designs and designers nightmares for years over any new plane have now
blessed the XL design (after the update is installed). That is a great
story for me. If you think there is still reason to be concerned over
design flaws in the XL, then I would like to hear what you think those
errors are. If you are now happy with the XL design then perhaps we can all
agree the plane is safe after installation of the upgrade.
Paul
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