PPRuNe Forums - View Single Post - AF447 final crew conversation - Thread No. 2
Old 10th Mar 2012, 22:59
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Machinbird
 
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Originally Posted by Lyman
gums, I agree with everything except the part where you state the pilot acknowledges the a/c is in "some alternate control law", and states "something like" 'I've got the controls'. It didn't happen. No one acknowledged ALTLAW at all except PM when he said "Lost the speeds, Alternate Law." This includes the species of ALTLAW (2).
That is correct Lyman. PF's initial lateral control inputs in the BEA 3rd report indicates that he was still using the 'pulsing' type technique of lateral control (That we have seen in a number of YouTube videos of Airbus pilot stick technique) after the switch to alternate law. He may have heard PM's comment about Alternate law, but it never carried down to how he was trying to fly the aircraft. Pulsing would be extremely inappropriate in roll direct.
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