A pilots' union official said Air France has replaced the air speed sensors on its entire fleet of long-haul A330 and A340 aircraft.

Workers unload debris from crashed AF447 in the port of Recife, Brazil, 14 Jun 2009

An investigation into the crash of an Air France jet off the coast of Brazil has focused on the possibility that icing on the external speed sensors called Pitot tubes caused incorrect airspeed readings in the cockpit, leading the crew to fly dangerously fast or slow.

Air France pledged to replace all of its Pitot tubes following the crash as a precaution.

A spokesman for the SNPL pilot's union, Eric Derivry, said Monday that the entire fleet is now equipped with the new sensors.

Air France Flight 447, which was on its way to Paris from Rio de Janerio, had 228 crew and passengers onboard when it crashed into the Atlantic Ocean after disappearing from radar on May 31.

Some information for this report was provided by AFP, AP and Reuters.