NTSB preliminary report says pilot appeared sick, 'apologized' before exiting plane in mid-flight

NTSB urges for action on existing safety recommendations

Boeing 737 rudder issues: NTSB issues 'urgent safety recommendations' for MAX 8 planes, warning critical flight controls could jam

Boeing 737 rudder issues: NTSB issues 'urgent safety recommendations' for MAX 8 planes, warning critical flight controls could jam