The preliminary report was released by the Aviation and Railway Accident Investigation Board on Monday in South Korea.

South Korea’s authorities investigating last month’s Jeju Air plane crash have submitted a preliminary accident report to the UN aviation agency and to the authorities of the United States, France and Thailand,

The black boxes of a plane that crashed in South Korea last month failed to record the final four minutes of the flight before the crash that killed 179 people on board, officials said in a preliminary report.