I had this problem as well. I'm using ACARS and the Jetstream 41 and got the stuck door problem.Fortunately, I had saved my original JS41 aircraft.cfg file. When I reverted, the door opens.I diffed the file and found a strange new block at the end:[exits]number_of_exits=0Maybe something happens with ACARS and then the JS41 thinks there are no doors?Anyway, save your aircraft.cfg file or just delete that block.