Already said, but anyway...
I've never seen an official (manufacturer's) document which stated :
If IAS < 60kt then we're on ground then stall warning should be off.
I fully concur with DozyWannabe : that's a hypothetical extrapolation you're making from the rules and there's no guarantee that was the logic behind that decision.
If you know of such a document, please let us know.
My guess about the logic stopping the stall warning:
- nothing to do with being on the ground : for that, as was said, re-said, re-re-said, test wheight on wheels.
- if IAS < 60kt, then assuming the AoA probe risks (too much to be acceptable) to output false/inaccurate data.
- then if IAS < 60kt, disregard AoA probes data as unreliable
- then you don't know your AoA, then you cannot have stall warning
I don't pretend this is really better (factually : it was not in AF447) but at least, before being sure, let's not assume Airbus folks just "forgot" WoW... It's as bad & unfair as saying that AF447 crew were idiots, and that all is their fault.
