Alpha Floor Protection
From Rumours & News:
An Air France Airbus A321-200, registration F-GTAN performing flight AF-7633 from Bordeaux to Paris Charles de Gaulle (France), was on final approach to Charles de Gaulle's runway 26L with autopilot and autothrust engaged, when autothrottle disconnected and the speed decayed until the alpha floor protection activated accelerating the engines to takeoff/goaround thrust and disengaging the autopilot. The crew took control, stabilized the aircraft and continued for a safe landing on runway 26R. Whats Alpha Floor Protection? Thanks |
You can read about it here:
http://www.pprune.org/questions/4705...rotection.html and here http://www.pprune.org/questions/8386...pha-floor.html Protects you from stalling basically. |
Thanks Johnie.
I understand it fully now.:ok: Then how come some aircraft still manage to go into a stall and crash then if this is activated? How does the aircraft manage to get past that protection? |
As far as i kown this is only to airbus airplanes (you will have trouble to stall a airbus plane)
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AF 447 seriously stalled despite all the fly by wire protection and Alpha Floor Protection.
So it still needs the human input to prevent the stall become fatal crash. |
AF was in 'alternate law' after it's probes iced up. In alternate law airbus can be stalled, oversped and over banked. The protections are only available in 'normal law'.
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