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Subject: Re: Co-pilot error caused AA 587 crash Posted on: Wed, 27 Oct 2004 11:55:44 +1000



Pete wrote:

>>But Molin didn't know he was putting more pressure on the tail than
>>it could bear. Why he didn't -- and who's to blame for that -- is the
>>subject of a bitter fight between Airbus and American.
>
>
> I thought that was one of the main advantages of fly-by-wire systems,
> to eliminate truly stupid actions of pilots. Sounds like Airbus shares
> a lot of blame for the crash. It's like an auto maker made a car that
> sheared off its wheels if the steering wheel was turned too quickly,
> and the maker's response was to tell drivers, "Don't do that!"

Having systems that positively prevent the pilots from flying outside
the design envelope is a twin edged sword. On the one hand, it prevents
them breaking perfectly good aircraft. On the other, it also has the
potential to prevent them rescuing otherwise fatal situations.

There have been incidents where airliners have been stressed well
beyound their design limits to recover from extreme upsets, and the
passengers and crew have survived to fly another day, even if the
aircraft had to be scrapped.

Maybe you just need a big red "GO-FOR-BROKE" button for those cases
where flying according to the book is guaranteed to result in a
premature meeting with the ground.

Sylvia.