I believe my door latch might need some looking into, my door has never come open in flight and seals very well. From the outside with the door closed the handle doesn't lay parallel with door, while latching from the inside it doesn't seem to go over center but it does rotate and pull the door tight at both latching points. The one thing that is prompting to me to take a look at it is closing the door requires either handle to be rotated to the open position or the lower rod that pulls the door