Exactly what happened I believe. Happens too often. Mines popped open on takeoff several times. Usually on takeoff when you get moving fast enough for the air pressure to be lower on the outside than the inside. Doesn’t change how it flies but it’s noisy and distracting and has lead to many unfortunate accidents.
I read that the pilot was talking about the door being open, so sounds like he was distracted.
Exactly what happened I believe. Happens too often. Mines popped open on takeoff several times. Usually on takeoff when you get moving fast enough for the air pressure to be lower on the outside than the inside. Doesn’t change how it flies but it’s noisy and distracting and has lead to many unfortunate accidents.