Marco,

If your door pops open you land, you close it, you take off again ...


You're right - except for some planes. I wouldn't want the gull wing
doors on our Tobago to come open in flight. Some reports have it swing
up and stay in a position about 5 to 10 inches open, some have it dent
badly and some have it rip off, with a likelyhood of hitting the
stabilizer. That would ruin the day.

--
Thomas Borchert (EDDH)