"David CL Francis" wrote in message
...
On Tue, 15 Mar 2005 at 12:59:51 in message
, Mike
wrote:

Isn't it the A310 that also lost a tail and crashed in New York City a
month or 2 after 9/11. IIRC, there is a particular airplane that the
manufacturer says "don't use the rudder too hard" because if you do,
the tail could break off. Imagine if you were test driving a car and
the salesperson said "don't turn too hard or the car will break in
half".

When this subject is discussed it seems to me some very important points
are often omitted, that is does the airframe meet the design cases?
Surely there are design requirements for aircraft which are researched
and defined by the aviation authority?

So did the airframe meet design requirements for gust loading, yaw
deflections and angles, control movements, negative and positive 'g'
etc? If it did not, then why not? Are the design requirements wrong or
did the airframe fail to meet them? Another factor is to what extent are
safeguards against excessively loads built in to airliners and to their
requirements?
--
David CL Francis

IRC the rudder went stop to stop several times in ~ 10 seconds. IMHO a
question which was not adequately addressed by the investigation was why the
rudder went stop to stop not once but several times. The rudder travel is
supposed to be limited at the speed the A/C was moving at the time the
rudder went stop to stop several times.
Ralph Nesbitt
Professional FD/CFR/ARFF Type
Posting From ADA