The site of Sunday’s plane crash involving South Korean budget airline Jeju Air is being searched by U.S. investigators, including from the plane’s manufacturer.

All but two of the 181 people aboard the Boeing 737-800 died, marking South Korea’s deadliest plane crash in decades. Investigators hope evidence collected at the scene will help them determine why the pilot attempted to land after declaring an emergency.

A pre-flight inspection revealed “no problems,” the airline said, according to the BBC.

Flight data such as speed, altitude, fuel levels and cockpit voice recordings are examined by the plane’s two separately mounted flight recorders, most commonly referred to as black boxes, The Guardian reported.

A SOUTH KOREAN PLANE’S FINAL MOMENTS CAPTURED ON VIDEO BEFORE IT SLASHES A CONCRETE BARRIER AND TRIGGERS AN EXPLOSION

South Korean army soldiers are shown Tuesday at Muan International Airport in Muan, South Korea, after a plane crashed there on Sunday. (AP Photo/Ahn Young-joon)

Aviation safety experts on Tuesday questioned the location of an airport embankment where the passenger plane crashed after skidding past the end of the runway, video showed.

Comments in the airport’s operations manual, uploaded in early 2024, said the embankment was too close to the end of the runway and recommended reviewing the location of the equipment during a planned expansion, Reuters reported.

Plane veers off the runway of an airport in South Korea and crashes, killing 179 people: reports

A memorial is seen outside Muan International Airport in Muan, South Korea, on Tuesday. (AP Photo/Ahn Young-joon)

Experts from the U.S. National Transportation Safety Board and a joint U.S.-South Korean investigation team are shown at the plane crash site at Muan International Airport in Muan, South Korea, on Tuesday. (Son Hyung-joo/Yonhap via AP)

The South Korean government has initiated safety inspections for all 101 Boeing 737-800s in the country. The Transportation Ministry said authorities are reviewing maintenance and operational records during the five-day safety inspections, which are scheduled to last until Friday.

The department said a delegation of eight U.S. investigators – one from the Federal Aviation Administration, three from the National Transportation Safety Board and four from Boeing – visited the crash site on Tuesday. The results of their investigation were not immediately available.

South Korean army soldiers work in front of Muan International Airport on Tuesday. (AP Photo/Ahn Young-joon)

While it will likely take months to determine the cause of the crash, Lee Jeong-hyeon, head of Muan Fire Station, said previously that workers were looking into various possibilities, including whether the plane was hit by birds.

CLICK HERE TO GET THE FOX NEWS APP

“A bird strike on an engine could shut down an engine, but there are so many redundant systems there that it just doesn’t make sense. We’re not in the dark, but we do know that the runway is 9,200 feet long. It’s very long.” “It (the plane) came hot and high, hot and fast. We don’t know why that was the real problem,” aviation consultant Mike Boyd told Fox News on Sunday.

The Associated Press and Reuters contributed to this report.