Flight 370

In the late evening of March 8, 2014, Malaysian Airlines flight 370 departed Kuala Lumpur for Beijing with 239 on board. Approximately 40 minutes after departure, the transponder of the plane was turned off and a voice from the cockpit bid Kuala Lumpur good night.
  A week after the reported loss of the plane, it was determined conclusively that the aircraft was hijacked, and not the victim of a catastrophic mechanical failure. It was reported conclusively that the aircraft's onboard communication systems were attempting to communicate with satellites up to seven hours after initial contact loss, and the plane changed directions multiple times during that period.