@PJ2..."If the AoA indication adjusts for high Mach Number, (as the ECAM stall warning does when the Airbus is in Alternate Law), then the indication is useful."......
To be brief, does the ECAM (FCM) have time after a/p loss and Alternate 2 to recalc the STALLWARN AoA? As near as I can tell that would be 4 degrees at M.80? IOW, you are satisfied the "STALLSTALL" is legit?(the first one). Also, what does Bank Angle play in the ECAM's (display, via FCM logic?)
@DOZY.....
"Well, for a start I don't think there's an updraft in existence that could cause a heavy widebody to climb like that, plus an updraft wouldn't necessarily cause the pitch to increase."
All aircraft are susceptible to updraft, size and mass are not irrelevant, but by itself, the size and mass of 447 doesn't innoculate it from the effects of UPDRAFT. Yes, the PITCH may remain constant, but the AoA will not, it will INCREASE......Dozy, is it possible the presence of updraft may have caused the initial divergence in PITCH/AoA?
Last edited by Lyman; 8th May 2012 at 18:41.