Originally Posted by
gums
Salute Mad!
....we saw a weak elevator in AF447 that took a long time of full forward stick to move the stab and recover from the stall. At least that's what some of the Pruners here saw in some sim tests.
Gums sends...
Please could we stop comparisons with AF447. Airbus control system (modified 'C*') is completely different to any Boeing, especially the conventional 737, and the Elevator and Stab effectively act as one (stab following up the elevator when needed). Amazingly the A330 had enough pitch down authority to unstall up to some horrendous A of A, and had the crew only persisted in a nose down demand they might have recovered, though the nose down attitude needed was probably beyond their imagination. Some very courageous AB test pilots tried it out well into post stall (20 degrees or so from memory) and lived to tell the tale.