Continuity mistake: In the scene were the pilot among the survivors start to land for the first time, the plane starts to shake. The teenage girl is comforted by the teenage boy. In one shot the girl wears her black jacket, in the next shot she's only wearing her green sweater, but in later shots she wears her jacket again. (00:46:10)
Factual error: After taking off from Bangor, the pilot pulls back on the flight control bringing the plane up to level flight. However, after taking off, a plane is "nose up" and would require pushing forward on the controls to bring the nose down to level. This is also evident by looking at the attitude indicator (circle with top half blue and bottom half brown). The white line indicates the horizon and you can watch the indicator show the plane's attitude coming from below horizon (nose down) to the horizon (level flight).
Factual error: When the airplane lands at LAX, the pilot indicates being out of fuel and is nearly unable to stop the airplane. However, the particular gate (54) where the airplane ends up at LAX would require a minimum of four stops and turns before getting there. Ending up at that particular point would not have been possible without power to taxi.
Other mistake: In the scene where they are 1st landing at Bangor it is known that there is no electricity at the airport. If you look closely during the landing you will see that the runway lights are on.
Continuity mistake: There is a scene where Laurel, Dinah, and Toomey are in the Cloud 9 restaurant and everyone else is out by the windows looking at the plane. The camera cuts from the group out by the windows - which includes Gaffney - immediately to a shot of the Cloud 9 restaurant sign. You can see Gaffney inside the restaurant through the sign. (01:29:45)