An Alaska Airlines Boeing 737-9 MAX made an emergency landing in Oregon on Friday after one of its doors blew open mid-air after takeoff. It was not immediately clear if anyone was injured in the incident, and the airline said that the matter is under investigation.An Alaska Airlines Boeing 737-9 MAX made an emergency landing in Oregon on Friday after one of its doors blew open mid-air after takeoff. It was not immediately clear if anyone was injured in the incident, and the airline said that the matter is under investigation.