AF447

[PEI_3721]

“ AOA is the best indicator of stall. Why airliners haven't used it as primary stall warning just puzzles me. # 4038
Many (most) airliners use AOA for stall warning and stall identification.
The A330 had AOA and in some modes of operation used it for stall alerting; in this instance it appears that the method of routing AOA information via the ADC was a possible problem.

Re: “EASA says it is considering a mandatory change of at least two of the three Pitot probes …”
EASA’s problem appears to be that having already known of the deficiency ( Instrument External Probes), and presumably agreed that crew procedures in the event of unreliable airspeed would be sufficient, this accident may have proved otherwise.
Disregarding hindsight, I wonder how many readers here would have accepted that attitude and power were sufficient for short duration flight without airspeed … of course excepting when in adverse convective weather.

HF in regulation; thinking of all of the alternative scenarios, context, and a judgment call … no blame just a better understanding