If indeed the flight deck door was locked, could a change in flight rules be made for all aircraft that on minimums pilot monitoring flicks the door switch to open? Hardly going to get hi-jacked with 10 seconds to go are we? Even in our Cessnas and Pipers during pfl’s we unlatched the doors in case they got jammed. Could save a crew member’s life if the door got jammed in a crash landing. Happened to a United Express aircraft that collided on the runway intersection with a beech king air. Crew survived and were waving to rescue team. Door was jammed shut and the pilot and her 1st officer perished in the flames.