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Air France flight plunged vertically

AIR France Flight 447 plunged vertically into the Atlantic Ocean intact at a very high speed, a top French investigator said yesterday, adding that problems with the plane's speed sensors were not the direct cause of the crash.

Alain Bouillard, who is leading the investigation into the June 1 crash for the French accident agency BEA, says the sensors, called Pitot tubes, were "a factor but not the only one."

"It is an element but not the cause," Bouillard said. "Today we are very far from establishing the causes of the accident."

The Airbus A330-200 plane flying from Rio de Janeiro to Paris went down with 228 people on board 1,500 kilometers off Brazil's coast far from radar coverage.

The BEA released its first preliminary findings on the crash yesterday, calling it one of history's most challenging plane crash investigations.

One of the automatic messages emitted by the Air France plane indicates it was receiving incorrect speed information from the external monitoring instruments, which could destabilize the plane's control systems. Experts have suggested those external instruments might have iced over.

Bouillard said the plane "was not destroyed in flight."

"The plane seems to have hit the surface of the water on its flight trajectory with a strong vertical acceleration," he said, adding that investigators found "neither traces of fire nor traces of explosives."

Bouillard said life vests found among the wreckage were not inflated, suggesting the passengers were not prepared for a crash landing in the water.

A burst of automated messages emitted by the plane before it fell gave rescuers only a vague location to begin their search, which has failed to locate the plane's black boxes in the vast ocean expanse. The chances of finding the flight recorders are falling daily as the signals they emit fade.

He said the search has been extended by 10 days and will continue through July 10.

Bouillard said French investigators have yet to receive any information from Brazilian authorities about the results of the autopsies on the 51 bodies recovered from the site.


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