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 discovery of the missing data suggests all power may have been cut, which is rare, a former government accident investigator said.

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.