NTSB issues urgent safety alert after Boeing 737 rudder failure The Seattle TimesNTSB issues ‘urgent’ safety warning for some Boeing 737s, including MAX, in latest blow to struggling planemaker CNNU.S. agency calls for urgent action on Boeing 737 rudder systems The Washington PostSafety Board Warns of Rudder Control Defect in Some Boeing Planes The New York TimesNTSB issues urgent safety recommendations on Boeing 737 rudder after Newark incident Yahoo Finance