The acting president ordered an emergency safety inspection of the airline operation system as investigators worked to identify victims and find out what caused the country's deadliest air disaster.

Several passenger plane crashes have occurred worldwide this year, including a Wednesday morning Azerbaijan Airlines wreck that has left dozens feared dead.

South Korea has vowed thorough investigations to find what caused a plane crash that killed 179 people, saying Monday that it will also inspect all Boeing 737-800 aircraft operated by the country’s airlines.

Jeju Air Flight 7C2216 crashed in South Korea on Sunday, killing 179 people on board.

Investigators from the NTSB and Boeing were expected to join the investigation into South Korea's deadliest air crash.

The Jeju Air 737 crash in South Korea on Sunday that killed all but two of the people onboard was in many respects as baffling as it was tragic. Given the scant information currently available, it’s hard even to piece together a coherent picture of what happened.

Officials are investigating the cause of the deadliest aircraft crash in South Korean history, which killed 179 people.

South Korean officials will conduct safety inspections of all Boeing 737-800 aircraft operated by the country's airlines after a deadly Jeju Air crash.

On Dec. 29, all passengers aboard a flight on South Korean carrier Jeju Air were killed when a plane skidded down a runway and burst into flames. The incident happened at Muan International Airport (MWX) in the country's southernmost region.

Shares of Boeing fell in early trading on Monday, one day after a Boeing model 737-800 was involved in the Jeju Air plane crash in South Korea that killed scores of passengers. The stock price dropped more than 4% at the open of trading on Monday morning.

The Jeju Air crash in South Korea is an outlier in a country considered to be a gold standard for airline safety.