While much remains unknown about the fatal Jeju Air accident in South Korea, what is clear is the tragic role played by the localizer antenna installation off the end of the runway. The hardened structure surrounding the antenna undoubtedly contributed greatly to the destruction of the Boeing 737 as it skidded off the runway and slammed into the unyielding concrete.
That localizer antenna mound at Muan airport is 860ft from the end of runway 19. At the end of runway 9 at San Diego Intl airport SAN, within 400ft there is a blast fence, Pacific Hwy and a Shell gas station! Also, there is no EMAS or arrester bed at the end of runway 9 at SAN.
Completely agreed on the poor design. However, I somehow doubt EMAS or a similar arresting system would have changed the outcome on this particular accident much.