The expert said, "We must get rid of the mound..."It's a big problem even if it's outside the safety zone" [Y transcript]

■ Host: Um Ji-min, anchor Kim Myung-geun, anchor
■ Starring: Kwon Bo-heon, professor of aviation safety management at Far East University, lawyer Kim Sung-soo,

* The text below may differ from the actual broadcast content, so please check the broadcast for more accurate information. Please specify [YTN Newswide] when quoting.

◇Anchor> And isn't the shape of the support also controversial? It was raised by stacking two to three meters of mud on a concrete support, and local risers, in other words, azimuth facilities, were protruding over the mud, but it was pointed out that it was against the Ministry of Land, Infrastructure and Transport's manual.

◆ Kwon Bo-heon> Runways are usually considered flat. In fact, Incheon Airport is all flat. There is no problem if it is parallel to the other end of the runway, but when Muan Airport was designed, it was not possible to create a flatland and it is 5.6 meters high on one side. Therefore, in order to receive signals from this localizer antenna, we have to increase the localizer on some sides of the runway.

As a result, the same-sized localizer facility was raised to raise the soil. If this localizer pole was raised, it is judged that such an accident would not have occurred.

◇Anchor> Even if it is some consideration to match the height of the airport now, the Ministry of Land, Infrastructure and Transport manual says that the antenna foundation should be at the same height as the ground and that soft ground should be selected as a support, but concrete is quite hard.

◆Kwon Boheon> That's right. So you have to make it the same height as the surface and raise the pole, but you made a blunt object without raising the pole. This will be a part that goes against the facility standards.

◇ Anchor> Because of this, many people are feeling a lot of regret that they might have been able to reduce the damage a little if it had not been for blunt instruments. What do you think?

◆Kwon Boheon> I have a question about that. The reason is that there was a wall right behind the runway. The outer wall of the runway is also made of bricks, and it is only necessary to conduct a professional experiment to find out how different it is from hitting a blunt object when hitting the brick. Even if there is a blunt object outside 300 meters, even if there is a blunt object claimed by the Ministry of Land, Infrastructure and Transport, the damage to the plane would have been significant. Of course, it would have caused more damage because it is now about 48 meters ahead, but even if this was outside the safety zone, it is believed that it would have caused great damage to the plane.

◇Anchor> Then professor, you're an aviation safety expert. From an expert's point of view, there is a concern that the same thing will happen again in the future when such a similar accident occurs, whether this blunt object can be left as it is.

◆ Kwon Bo-heon> This hillside is a part that must be eliminated, and in the case of Muan Airport, the actual outer wall is very close. It'll be a little more than 300 meters. So, for this part, if the area is large, it will not be a problem, but in the case of a narrow area, it is judged that EMAS should be installed to have a facility that can sufficiently slow the plane.

◇Anchor> According to foreign media, there is also an opinion that the structure should be brittle. If there was no concrete, wouldn't it be okay to have a mound?

◆ Kwon Bo-heon> It depends on how hard the soil is. But doesn't the soil harden when it's rained on? However, the height should be 7.5cm and almost the same as the floor, but this part of the hill actually needs to be cut, and on the other hand, the reason for this accident was that the aircraft was lower because the landing gear did not come out. Therefore, it is judged that the impact of the collision was greater.

Excerpted from
: Lee Sun Digital News Team Editor

#YRecord