Investigators probing the Jeju Air Boeing 737-800 crash that killed 179 people in December have uncovered evidence suggesting pilots shut down the less-damaged engine after a bird strike, according to a source familiar with the investigation.

South Korea’s government will conduct inspections on all Boeing 737-800 aircraft in the country following the crash of a Jeju Air plane at Muan International Airport on December 29, News.Az reports, citing Yonhap.

The crash of Jeju Air flight 7C2216 on Sunday marks the deadliest ever on South Korean soil and the worst involving a South Korean airline since a 1997 Korean Air Lines crash in Guam that killed more than 200 , News.az reports citing Investing.