Quote:
Originally Posted by Bassnut
..... Isnt there a backup option somewhere in between?, as in a seperate simple backup servo control, without automation (or cables)?, or is that mode what is ment by "switching the computer off"?.
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Sort of Fred. The A330 incident wasn't actually a "failure" of the FBW system.
Several very abnormal "spikes" came from one of the Air Data/Inertial reference units (ADIRU's) ....and the flight envelope computer "protections" pitched the aeroplane when there was no physical reason to do so.
As it turned out the samplng intervals did not help things, in that the perfectly functioning ADIRU outputs were ignored (they supposed to look at each other and discard spurious signals).
I believe this has since been addessed by Honeywell.
And as I mentioned earlier..there is indeed an out...turning off all primary and secondary flight computers.