South Korean investigators probing a Jeju Air crash which killed 179 people in the worst aviation disaster on its soil said Wednesday they will send one of the retrieved black boxes to the United States for analysis.
The plane was carrying 181 people from Thailand on Sunday when it issued a mayday call and belly-landed before hitting a barrier and bursting into flames, killing everyone aboard except two flight attendants pulled from the burning wreckage.
South Korean and US investigators, including from Boeing, have been combing the crash site in southwestern Muan since the disaster Sunday.
"The damaged flight data recorder has been deemed unrecoverable for data extraction domestically," said South Korea's deputy minister for civil aviation, Joo Jong-wan.
"It was agreed today to transport it to the United States for analysis in collaboration with the US National Transportation Safety Board."
Joo earlier said both of the plane's black boxes were retrieved, and for the cockpit voice recorder, "the initial extraction has already been completed".
"Based on this preliminary data, we plan to start converting it into audio format," he said, meaning investigators would be able to hear the pilots' final communications.
The second black box, the flight data recorder, "was found with a missing connector", AFP quoted Joo as saying.
"Experts are currently conducting a final review to determine how to extract data from it."
Officials initially pointed to a bird strike as a possible cause of the disaster, but they have since said the probe was also examining a concrete barrier at the end of the runway, which dramatic video showed the Boeing 737-800 colliding with before bursting into flames.
They also said that a special inspection of all Boeing 737-800 models operated by local carriers was examining their landing gear after questions over a possible mechanical failure in the crash.
The ongoing inspections are "focusing mainly on the landing gear, which failed to deploy properly in this case", said the director general for aviation safety policy, Yoo Kyeong-soo.
Local media reported the landing gear had deployed properly on Jeju Air Flight 2216's first failed landing attempt at Muan airport before failing on the second.
The issue "will likely be examined by the Accident Investigation Board through a comprehensive review of various testimonies and evidence during the investigation process", the ministry of land, which oversees civil aviation, said at a briefing.
