You are right about the turbulence.
This seems to be the case indeed.
My thoughts are with all these missing people and their families.
Always a sad thing.
Kindness
mudra
http://www.voanews.com/english/2009-06-01-voa27.cfmAir France Jet Missing After Hitting Storm Off Brazil
By VOA News
01 June 2009
An Air France passenger jet with more than 200 people on board has disappeared and is feared to have crashed off the coast of Brazil, after flying into strong tropical turbulence and probable lightning.
Authorities say Brazilian Air Force flight controllers last had contact with Flight 447 bound for Paris as it was leaving Brazilian airspace early Monday, 350 kilometers northeast of the coastal city of Natal, near the island of Fernando de Noronha.
In Paris, Air France said an automated alert shows the plane with 228 people on board then encountered storms and experienced a catastrophic systems failure before it was to have entered Senegalese airspace 50 minutes later.
Search operations are under way over the Atlantic, with elements of the Brazilian and French military searching a vast area of ocean described as three times larger than Europe.