The concrete wall at the end of Jeju Air's runway is being scrutinized following a plane crash.

• At the end of the runway, a Boeing 737-800 collided with a mound of dirt and a concrete wall.
• The area housed a localizer that guides planes on the runway.
• Had the plane not collided with the concrete wall, the fatalities could have been minimized, according to some aviation experts.

The design of Jeju Air Flight 7C2216's runway, which resulted in the death of all but two of the 181 passengers on Sunday morning, is being questioned by aviation experts.

The 737-800 plane landed on the runway at Muan International Airport in southwestern South Korea after an overnight flight, but burst into flames upon hitting the dirt and wall, where a localizer had been installed.

Todd Curtis, founder of Air Safe Media, said that it was difficult to stop the aircraft safely due to the incident. Curtis, who worked at Boeing for nearly a decade as a safety engineer, tracks aviation accidents and other incidents.

Investigators will need several months to determine the cause of the worst-ever air disaster in South Korea, which resulted in the deaths of many people. They will examine various aspects, including aircraft maintenance records, pilot scheduling, engine, and cockpit voice recorders.

Initial evidence suggests that a bird strike may have contributed to the possible engine loss. However, experts warned that the investigation is still in its early stages.

Had the plane not collided with the concrete wall, the fatalities could have been minimized, according to some aviation experts.

John Cox, an aviation safety consultant and a Boeing 737 pilot, stated in a video of the Jeju Air flight's landing that the airplane was skidding along and slowing down until it hit the wall.

Cox believes that the primary cause of death for many passengers on board is due to blunt force trauma from colliding with the wall.

Common are barriers past airport runways, as recommended by international and other aviation authorities.

The Federal Aviation Administration recommends a safety area of approximately 500 feet wide and 1,000 feet beyond the end of the runway to minimize harm if an aircraft exceeds the runway. However, the FAA notes that there are other safety measures available through its Runway Safety Area Program because many U.S. runways were constructed prior to the standard's establishment.

Despite the completion of the original RSA improvement projects, the program is still evolving to address safety risks and plan for future enhancements, according to the agency.

EMAS, a crushable material that slows down planes beyond the runway and prevents them from rolling into more dangerous areas, is installed at New York's LaGuardia Airport and other airports. In 2016, Mike Pence's vice presidential campaign plane overran a runway at LaGuardia and was ultimately stopped by EMAS.

Investigators will likely focus on the barrier at the edge of the runway at Muan International Airport, which did not appear to be frangible, according to video footage and expert analysis.