While planes can extend their time aloft via aerial refueling, it would not be possible for a plane to stay aloft for 3 years only landing 30 times briefly to take on abductees. Planes require periodic maintenance. In the case of the Airbus A380 used by Crispin, it has a maintenance requirement that takes 55 days to complete, and this must be performed every 18 months to 2 years. Quantas for example spends 12 hours per week per aircraft. Every eight to 10 weeks, filters will be changed, key systems such as hydraulics will be lubricated and a detailed inspection of all the emergency equipment completed. A typical maintenance check on a Boeing 737 takes between six and 24 hours. Depending upon the nation of registration, it would be also be subject to periodic inspections to be deemed airworthy.
Bashing in an electronic keypad with a rifle butt will not open the locks on the door.
In the crane shot at the end, when Tom drags Karakurt's body along a gravelly and muddy path, the skid marks do not lead all the way back to the place by the shore, where he knocked him out before.
When Tom was fighting Asher, there is a split second frame after Asher cuts him that the knife disappears from his hand. It reappears in the next cut.