Boeing on Friday published an update detailing some of the steps it has taken to improve its culture and manufacturing as it tries to improve the safety and quality of its aircraft.This is a big year for Boeing.

Boeing shares were down as much as 6% Monday morning. Authorities in Korea believe a bird strike could have been a factor in the fatal crash.

Boeing Co.’s stock was down Monday after a deadly crash in South Korea, but its bonds were holding up. Boeing Co.’s stock fell Monday in the wake of a deadly plane crash in South Korea, but the aerospace giant’s bondholders seemed unfazed.