NEW : Air France calls the recovery `` very significant '' British aviation expert skeptical data remains ; British expert hopeful . All 228 people aboard the Air France Flight 447 from Paris to Paris were killed . The Air France A330 plunged into the Atlantic Ocean on last week .
NEW : Air France calls the recovery `` very significant '' British aviation expert skeptical data remains ; French expert hopeful . All 228 people aboard the Air France Flight 447 from Rio de Janeiro to Paris were killed . The Airbus A330 plunged into the Atlantic Ocean on June 1 , 2009 .