D Ramapriya wrote in
:

On Jan 19, 11:37 pm, Mxsmanic wrote:
Thomas Borchert writes:
I'm sure most remember that was not at all what happened. Red faces
all over Air France when their hot shot demo pilot had a "Hey,
watch this" moment.

Especially when his stunt exposed serious problems with the aircraft
fly-by-wire software ... serious enough to require doctoring the
black box so that nobody would find out about them. That was when I
wrote Airbus off permanently. Safety obviously wasn't a priority.


That's a bit too unreasonable. Don't think it was a software problem,
btw, but of the engines of that time requiring a certain spool-up
time. That's how an A320 came down rather close to my backyard 18
years ago in Bangalore.

No, actually, that had nothing to do with spool up times. I think that was
the first one that they used the phrase "Aircraft-crew interface" The
problem was the airplane got wel ahead of the crew, they were unaware of
what modes the various auto functions were in and just didn't realise what
was going on in general. The spool up times would have been almost
insignificant in this case, and in any case, spool up times are very quick
on modern engines, almost as fast as pistons and in some cases.
Basically those guys got a high rate of descnet going with no power on and
descended far too rapidly and didnt so anything about it until it was too
late. This got to be a feature of several early 'Bus accidents and the
aricraft-crew interface accident list grew fairly quickly in those early
FBW days.


Bertie