"The transcript of the cockpit voice recorder (CVR) is expected to be completed today, and the flight data recorder (FDR) is in the process of being prepared for transport to the United States" for analysis, South Korea's land ministry said in a statement.

The flight, operated by Jeju Air, was landing when it went off the runway in Muan, in the country’s southwest. Only two people survived the crash.

Officials are investigating the cause of the deadliest aircraft crash in South Korean history, which killed 179 people.