Since the accident, Air France has replaced the pitots
on its Airbus fleet with a newer model.
Air France has taken several safety-related steps since the crash of AF447, including replacing two of three Thales pitot
tubes on Airbus A330 and A340s.
On Tuesday, the airline assured its pilots that none of its A330s or A340s would fly without at least two of the new instruments, and that all Air France A330s and A340s will have all three Pitots replaced by July.
Without key information from the Airbus 330's missing data recorders, investigators have focused on the possibility that external speed monitors - Pitot tubes - iced over and gave false readings to the plane's computers as it flew into thunderstorms.
What we know is that other planes that have experienced incorrect airspeed indications have had the same Pitots.
With the plane's data recorders still apparently deep in the ocean, investigators have been focusing on the possibility that external speed monitors - called Pitot tubes - iced over and gave false readings to the plane's computers in a thunderstorm.
The external instruments, known as Pitot
tubes, have drawn attention in the investigation into the crash of Air France Flight AF 447.
The same report says Air France decided to increase the inspection frequency for its A330 and A340 jets' Pitot
tubes, but that it had been waiting for a recommendation from Airbus before installing new Pitots
Failure of pitots
led to a series of automation failures, disconnects, warnings and alarms for Flight 447.
D-B] represent the separation distance between the upstream Pitot
tube static pressure ports and the entrance plane of the frame, and the exit plane of the frame and the downstream Pitot
tube static pressure ports, respectively.