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Air France 447

Printed page 44. PDF page 46.

for the flight conditions at that time. If the CAS measurements for the three ADR are lower than 60 kt, the angle of attack values of the three ADR are invalid and the stall warning is then inoperative. This results
Open official document at PDF page 46Final Report: Accident on 1st June 2009 to the Airbus A330-203 registered F-GZCP operated by Air France flight AF 447

Air France 447

Printed page 198. PDF page 200.

become invalid, the warning stops. By design, when the measured speed values are lower than 60 kt, the measured angle of attack values are invalidated. Each time that the stall warning triggered, the angle of attack
Open official document at PDF page 200Final Report: Accident on 1st June 2009 to the Airbus A330-203 registered F-GZCP operated by Air France flight AF 447