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Old 10th Sep 2011, 11:16
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rudderrudderrat
 
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Hi DozyWannabe,

Thanks for the reply - I think we are talking at crossed tortoises.
Quote:
Me.... Please explain how you think it is possible for a heavy aircraft to be airborne, yet travel through the air with a speed <60 kts.

You .... and I think that's probably why the systems were designed the way they were - for the very reason that it is so unlikely.
Do we agree that it is impossible for a passenger airliner to be at FL 350 with an airflow <60kts passing over the Alpha probes (from whatever direction)?

The A330 stall warning logic has an error (similar to the B744 slat retract & hence stall warning on take off, which I mentioned earlier). The 744's stowing the inboard leading edge devices due to a spurious REV signal when airborne, should also have had on ground logic to prevent it.
And ironically that was due to a software logic error in the 744's systems that had never reared its head until that moment.
AB stall warning inhibit below 60Kt should apply only on the ground.

Last edited by rudderrudderrat; 10th Sep 2011 at 11:34.
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