 FACT: When the rear cargo doors come off after hitting the terrain,  the contents of the cabin, as well as a passenger, are shown to be  violently sucked out. The aircraft is not pressurized, so this  could not be due to a great pressure differential between the cabin  and the outside atmosphere. The mere fact that the door is open does  not create a massive suction or draft, as is evident by military  cargo and paratroop drops made from rear exit aircraft. Thus, while  it might get noisy, and things might get shaken out, they would not  get sucked out in this manner.