Investigation into Jeju Air crash reveals deadly runway design flaws, leading to widespread reforms at South Korean airports.

The nation’s transport ministry reviewed structures near airport runways after the deadly crash of a Jeju Air flight late last month.

Authorities have said black boxes holding the flight data and cockpit voice recorders stopped recording around four minutes before the crash.

South Korea will extend runway safety areas and redesign infrastructure after the crash of a Jeju Air Co. flight last month that killed almost everyone on board, sparking criticism that the design of the airport might have exacerbated the accident.

SEOUL: Investigators found bird feathers and blood in the two engines of the Boeing jet that crashed in South Korea on Dec 29, a person familiar with the probe told Reuters on Friday (Jan 17).

Seven airports will also have their runway safety areas adapted following a review of all South Korea's airports that was carried out after the crash - the deadliest in the country's history. The Jeju Air flight was bringing passengers home from Thailand after Christmas when it made an emergency landing at Muan airport and exploded after slamming into a concrete barrier at the end of the runway.