South Korea will remove a concrete structure at the runway of one of its southern airports, the scene of a plane crash that killed all but two of the 181 people on board last month.

Son Chang-wan was in office while works were undertaken at Muan International Airport. Last month, a plane crashed into a concrete barrier there, killing 179 people.

SEOUL (Reuters) - South Korea has decided to extend to April 18 the shutdown of Muan international airport where a Jeju Air passenger jet crashed last month, the transport ministry said on Saturday. The airport is the site of the Dec. 29 crash of the Jeju Air Boeing 737-800 jet that killed 179 passengers on board.

The South Korean Transport Ministry announced on Wednesday that the concrete feature would be removed from Muan International Airport, according to Reuters. Most other international airports simply mount similar arrays on breakaway posts to allow planes to overrun the pavement across flat ground.

South Korea will change the concrete barriers used for navigation at nine airports across the country following December's plane crash that killed 179 people. 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.

South Korea's transport ministry said on Wednesday that it would remove the concrete embankment installed at Muan International Airport following last month's Jeju Air crash, its deadliest domestic air disaster.