PPRuNe Forums - View Single Post - AF 447 Thread No. 7
View Single Post
Old 13th Nov 2011, 23:09
  #197 (permalink)  
infrequentflyer789
 
Join Date: Jan 2008
Location: uk
Posts: 857
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Organfreak
Clandestino typed:
What does that mean??? Wind noise??? FAs falling base over apex???
[Regarding aural indication of excessive AOA]

I would think it's fairly obvious he means the a/c shouting "stall" at them continuously for almost a minute - but then it seems it wasn't obvious to those there on the night...

Where I differ from Clandestino and others is that I am not sure the binary on/off stick shaker or stall warning is an adequate subsititue for an AOA gauge once you've managed to get yourself stalled. Shaker / warning won't tell you any different between "you're nearly stalled", "you're stalling", "you're well stalled" and "you're more stalled than any test pilot ever went...".

Maybe the warning should get louder, shout different things, shake stick harder... or maybe it should be a cue to look at the instrument that tells you exactly how far you are from flying.

That said, I have a suspicion it would have made little difference on 447 - the AOA would quickly have been pegged at max (25) and then disbelieved.
infrequentflyer789 is offline