Former U.S. pilot "I've seen a lot of unique airport designs, but it's the worst."

In connection with the Jeju Air plane disaster at Muan International Airport, U.S. experts have stepped up their criticism that a concrete structure installed at the end of the airport's runway may have increased the damage.

In a Washington Post article reported on the 30th local time, Hassan Shahidi, chairman of the U.S. nonprofit Aviation Safety Foundation, said, "This is a very complex accident," adding, "There are many factors that investigators need to grasp."

"The arrangement of structures in airports is determined by international standards," Shahidi said, noting that "investigators will want to know if these structures are compliant" and "for example, objects near the runway should be brittle in case of impact."

Former aircraft pilot Doug Moss also pointed out that the layout and layout of the airport appears to be a significant cause of the disaster.

"This is the worst," Moss said, after presupposing that it is not unusual for a runway to have a slight slope because it is expensive to flatten it completely.

"Video footage of the plane running on the runway suggests that the pilots have maintained some control," said John Cox, an aviation safety consultant who was interviewed by the same outlet. "They landed brilliantly on the runway."

"Without the structure there, we might have had enough space to stop safely," Cox continued.

Along with the analysis that Bird Strike (bird strike), one of the causes of the disaster, is not the only cause of the accident, some noted the reason why the landing gear (landing wheels) did not come down."Bird strikes are not uncommon, and so are landing gear problems," Jeffrey Thomas, editor of
AlineNews, told Reuters. "Bird strikes happen very often, but they generally do not cause aircraft disasters by themselves."

Robert Sumwalt, former chairman of the U.S. Transportation Safety Board (NTSB), told CBS in an interview, "I flew a Boeing 737 family (of the same family as the plane) for 10 years as a commander, and I can say that landing gear (pilot can manually) get off."

"So the real question is, what steps did things go in here?" he said. "I have doubts that the landing gear didn't work properly in any form, given that it can be operated by normal means and manually."

"If you can read the cockpit voice recording device, that will be the key to solving the mystery," Sumwalt said.