Anomalies in on-board computerized controls have destabilized other A330 jets. Airbus sees no link between those cases and Flight 447.
Figuring out what caused the crash could shed light on the safety of composites – new materials replacing traditional metals in many aircraft.
Two passengers' names match those of Al Qaeda suspects, reports say. But experts caution that it's too early to tell if the link is legitimate.
Clues to Flight 447's failure may lie in Airbus tail section found Monday. Some airlines are starting to replace the instruments, known as Pitot tubes.
A French submarine is heading to the area to help locate the plane's black boxes, which may be at the bottom of the ocean.
Information from "black boxes" and other sources could help prevent future accidents.
100 m.p.h. winds, hail, and rain might have brought Flight 447 down, says a former Air Force meteorologist.
Air France reports a possible lightning strike. Airbus 330-200 has a good safety record.