Nathan Young wrote in message . ..
Received this article in my email today from AOPA. An update on the
Cessna wingspar AD. I am curious why the 421 isn't included in this
list of aircraft. I thought all the 4 series shared a common wing?

The rumor is that Cessna is finished cooking up the numbers on
the 421 spar so expect some AD movement in that direction soon.

I've seen no evidence that convinces me these ADs are nothing more
than an attempt to junk some airplanes and generate revenue from the
others for Cessna. I do not believe a serious safety of flight issue
exists (unlike the exhaust AD).

The key fact is that Cessna refuses to release the data on which the
AD is based, and the danger is theoretical and has not been shown to
occur in actual flight. An oft cited example of the 402 that crash
in OK had a factory defect, 20,000+ hours, chronic wing skin cracking,
and had a main gear leg ripped out in an accident. That simply can't
be representative of the entire 400 series fleet, or even of 402s in
specific.

I was in the market for a 421C but I'm sitting tight to see what
happens. If Cessna succeeds at getting ADs approved this way,
that will set a precedent to push through other ADs of dubious value.

--
Mike Ciholas (812) 476-2721 x101
CIHOLAS Enterprises (812) 476-2881 fax
255 S. Garvin St, Suite B
Evansville, IN 47713 http://www.ciholas.com