A plane of the South Korean airline Jeju Air at Seoul Incheon International Airport.
Benard /Andia/Universal Images Group/Getty Images
- Boeing stock fell as much as 6% after a Jeju Air plane crash in South Korea over the weekend.
- The crash involved a Boeing 737-800, killing 179 of 181 on board.
- Investigations into the crash are focused on a potential bird strike and landing gear failure as causes.
Boeing stock declined as much as 6% on Monday following a plane crash in South Korea over the weekend.