Flight 447 disappeared and likely broke up in midair in turbulent weather May 31 during a flight from Rio de Janeiro to Paris with 228 onboard presumed dead:

Some four hours into the flight, I presume the aircraft was already at cruising altitude of 10,000 meters. Could inclement weather be happening at that height??? Share your ideas please

Now, they said could be the pitot tube speed measurement. Is there not a speed threshold for the top and lower speed limit to prevent it from dropping out of the sky or disintegrating ???

Investigations conducted thus far seems to point towards the plane disintegrating in mid air. 19Jun09.

-- Air France 447 did not break up in flight, but "went straight down, almost vertically," investigators say. CNN Thu, 2 July 09