Alpha Floor Protection su A321 Air France

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Iscritto il: 26 settembre 2011, 17:10

Alpha Floor Protection su A321 Air France

Messaggio da 77W »

Av Herald riporta che "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.

The BEA reported in their weekly bulletin of Sep 11th that the autothrust system had disengaged permitting the airspeed to decay to a point where the alpha floor protection activated, disengaged the autopilot and accelerated the engines. The crew took manual control and continued the landing. The BEA is investigating the serious incident."


Per come viene descritto l'incidente, sembra che l'equipaggio non si sia accorto della disconnessione dell'AT prima e dell'approssimarsi dello stallo poi :o
I computer sono incredibilmente veloci, accurati e stupidi.
Gli uomini sono incredibilmente lenti, inaccurati e intelligenti.
L'insieme dei due costituisce una forza incalcolabile.

If we all worked on the assumption that what is accepted as true is really true, there would be little hope of advance.
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Messaggi: 708
Iscritto il: 26 settembre 2011, 17:10

Re: Alpha Floor Protection su A321 Air France

Messaggio da 77W »

An Air France Airbus A320-200, registration F-HBNE performing flight AF-7664 from Paris Charles de Gaulle to Marseille (France), was on a visual approach to Marseille's runway 31L. While turning final the alpha protection activated, the aircraft reached a minimum height of 700 feet before the crew initiated a go-around. The aircraft subsequently positioned for another approach and landed safely.

The French BEA reported in their weekly bulletin that the occurrence was rated a serious incident and an investigation by the BEA has been opened.


http://avherald.com/h?article=45fc9192&opt=0
I computer sono incredibilmente veloci, accurati e stupidi.
Gli uomini sono incredibilmente lenti, inaccurati e intelligenti.
L'insieme dei due costituisce una forza incalcolabile.

If we all worked on the assumption that what is accepted as true is really true, there would be little hope of advance.
Avatar utente
77W
05000 ft
05000 ft
Messaggi: 708
Iscritto il: 26 settembre 2011, 17:10

Re: Alpha Floor Protection su A321 Air France

Messaggio da 77W »

An Air France Airbus A320-200, registration F-HBNI performing flight AF-6270 from Paris Orly to Bordeaux (France), was on approach to Bordeaux's runway 29 at 3000 feet when the aircraft encountered hail causing the first officer's windshield to crack. The aircraft continued the approach, while descending through 2800 feet on autopilot the aircraft pitched up to 25 degrees nose up and alpha floor protection and TOGA LOCK activated at 20:45L (18:45Z), the aircraft climbed to about 4400 feet. The crew managed to regain control of the aircraft and landed the aircraft safely on runway 29 about 7 minutes later.

The French BEA reported the aircraft entered a hailstorm on approach to Bordeaux while at 3000 feet causing the first officer's windshield to crack. Subsequently, while descending through 2800 feet, the aircraft, still on autopilot, pitched up to 25 degrees nose up, Alpha Floor and TOGA LOCK activated. The crew managed to continue for a safe landing at Bordeaux. The BEA have opened an investigation into the occurrence rated a serious incident.


In questo caso potrebbe esservi una correlazione fra la grandinata e il successivo input dell'autopilota?
I computer sono incredibilmente veloci, accurati e stupidi.
Gli uomini sono incredibilmente lenti, inaccurati e intelligenti.
L'insieme dei due costituisce una forza incalcolabile.

If we all worked on the assumption that what is accepted as true is really true, there would be little hope of advance.
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