Originally Posted by
vinayak
Having said that it is an engineers preference... They have not just left the side sticks control to being just asynchronous.
They have taken the pain of having the 'Dual Input' call outs and the take over push button as well, wonder what is the school of thought that has gone in.
Have a closer look at the relevant parts of the AF447 thread. The short version is that it was a "clean room" design. Believe it or not, airliner yokes weren't connected for the purpose of one pilot being able to follow through the other's inputs (strictly speaking that's only necessary on a trainer). They were connected in the days of direct cable control of flight surfaces, so that if something went awry, you'd have two sets of muscle force acting on the controls rather than just one. In today's airliners that are all-hydraulic, this feature is redundant. That's the main reason, but there are others.
Originally Posted by
CONF iture
Because Clandestino has decided the French BEA has to be the sole Reference ... ?
What, you mean the French BEA who stated:
It is worth noting that the inputs applied to a sidestick by one
pilot cannot be observed easily by the other one
in the final report on AF447?
Originally Posted by
CONF iture
You're playing fast-and-loose with that ol' devil called context again. The AAIB performed that test on the A320 in isolation, which is reflected in the later statement:
Therefore, the aircraft demands a relatively high level of ‘assured’ skill from the trainee; their ability to land the aircraft correctly, consistently, should not be in doubt before base training commences, and certainly not in doubt during line training where passengers are carried.
What they explicitly do not do is compare the A320 setup with conventional controls in a similar test - I'd be prepared to bet that more often that not, the same scenarios in a B737 sim would have the same outcome.
Difficulty in determining what the other pilot is doing with the stick is a factor of the design, sure - but that's a known thing, and given the safety stats, it has not proven detrimental to safe operation of the aircraft compared with a more conventional layout. It'll always split opinion, but you can't argue with the numbers.