Malaysia Airlines Flight 370 made drastic changes in altitude and direction after disappearing from civilian radar, U.S. officials told CNN on Friday, raising questions for investigators about just who was at the controls of the commercial jetliner that went missing one week ago with 239 people on board.
The more the United States learns about the flight's pattern, "the more difficult to write off" the idea that some type of human intervention was involved, one of the officials familiar with the investigation said.