The Federal safety officials said that a pilot had initially told passengers not to evacuate Asiana Airlines flight that crash landed in San Francisco on Saturday.
CBS News reports that the National Transportation Safety Board (NTSB) had been examining the black boxes of the Asiana flight 214.
NTSB said that the people did not begin fleeing the aircraft until 90 seconds later when a fire erupted. At that point, the doors were opened and escape slides were inflated, report added.