Originally Posted by
Airbus38
So if both pilots pull hard back at the same time do you get double the pitch rate according to the fact that its a 'summation'?
No, because to total sum is still limited to the magnitude equivalent to single full stick deflection.
Aircraft are not flown by watching steering column deflection, nor by watching control surfaces deflection. Aircraft are flown by setting their attitude which is availible on the attitude indicator. Fact is that on a FBW Airbus there is no other option.
In the LH incident described, the PNF had the benefit of a doubt and took over just in time having no other indication than his PFD. It is a stupid speculation, but imagine if he saw the PF apply correct (in a conventional sense) displacement of controls, 30 (or as I hear 15) centimetres worth of confusion could have been the difference between life and death.
About a month later Turkish AF had a fatal accident with medim size transport turboprop, which left maintenance with crossed controls.
FD.
(the un-real)