The crew of Air France Flight 447 reported severe turbulence shortly before the plane disappeared.
Most of the people on Flight 447 came from Brazil, France and Germany.
CNN: Brazilian air force says debris was not from Air France crash
Flight 447 crashed into the Atlantic north-east of Brazil on 1 June 2009, after running into an intense high-altitude thunderstorm.
BBC: Air France crash: Tail section found on Atlantic seabed
The passengers on Flight 447 also included Marcelo Parente, chief of staff in the office of Rio de Janeiro's mayor.
And some nations, notably Brazil and Senegal, which were handling Air France Flight 447, don't yet have modern oceanic air-traffic-control systems.
WSJ: How New Air-Traffic Control Systems Operate Over Oceans
But he said that was likely to be extended, given that the recorders from Flight 447 had survived intact for so long.
The Bureau of Investigation and Analysis said the data indicated that Flight 447 crashed because the aircraft's speed sensors gave invalid readings.
Flight 447 was passing through an area prone to volatile and dangerous weather known as the Inter-tropical Convergence Zone when it went down.
If true, that would rule out an in-flight explosion as the cause of the crash of Air France Flight 447, Defense Minister Nelson Jobim told reporters.
CNN: Brazilian air force says debris was not from Air France crash
Paris (CNN) -- It should become easier to find flight data recorders in the wake of the Air France Flight 447 disaster, an aviation industry expert says.
It took four searches over the course of nearly two years to locate the bulk of Flight 447's wreckage and the majority of the bodies in a mountain range deep under the ocean.
Air France has said that Flight AF 447 sent an automatic signal indicating electrical problems while going through strong turbulence early in its 11-hour flight from Rio de Janeiro to Charles de Gaulle airport in Paris.
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