The Jeju Air black boxes aboard a Boeing 737-800 that crashed at Muan Airport on December 29, 2024, failed to record the final minutes of flight data.

The flight data and cockpit voice recorders on the Jeju Air jet that crashed on Dec. 29 stopped recording four minutes before the airliner hit a concrete structure at South Korea's Muan airport, the transport ministry said on Saturday.

The two flight recorders on board a South Korean airliner stopped working before the jet crashed during an emergency landing and subsequent crash that killed 179 of the 181 people on board, officials said Saturday.

The black boxes of the Jeju Air plane involved in last month's fatal crash has been found to lack data from the final four minutes before the explosion.

The last four minutes of data before the disaster which killed 179 people are missing, transport authorities say.

The missing data deepens the puzzle of what caused the deadly air disaster in Muan, South Korea, late last month.