Exclusive Accident-causing concrete structures...The standards, guidelines, and manuals were all broken.

Although the Ministry of Land, Infrastructure and Transport maintains its attitude that it has installed the concrete structure in which the Jeju Air passenger plane crashed, YTN coverage has found several parts that appear to be in violation of the regulations.

According to the navigation safety facility protection manual published by the Ministry of Land, Infrastructure and Transport, local risers should be installed so that they can pass through the slope without difficulty.

In addition, the support foundation is stipulated to be installed on soft ground at the same height as the ground surface, but the actual aircraft collided with a hard and high structure and exploded.

In addition, the Ministry of Land, Infrastructure and Transport explains that there is no problem because the facility is outside the longitudinal safety zone, but some point out that this is also an explanation that does not comply with the regulations.

According to the Ministry of Land, Infrastructure and Transport's airport take-off and landing site installation standards, the longitudinal safety zone should be extended to the point where the azimuth provision facility is installed.

Furthermore, detailed airport design guidelines further state that the longitudinal safety zone should be extended to this facility because local risers are the first obstacle.

Aviation experts and professors inquired by YTN explained that considering the purpose of these provisions and related overseas regulations, it is reasonable to think that localizer antennas are included in the longitudinal safety zone.