Factual error: TSA regulations strictly prohibit passengers from leaving an airplane once they have boarded, regardless if the doors are still open, except during an emergency situation. However, Dennis was permitted to leave to look for Will.
Factual error: Throughout the movie, we see various shots of the Ripley computer system with some sort of fog being pumped around the circuit boards inside. Presuming that this might even be a coolant of some sort, the way in which its being directed and not dispersed would create moisture on the electronics and easily short circuit things.
Factual error: We see Will using a gummy fruit to lift off a fingerprint from a can to then use on the fingerprint reader. This would not be possible due to the fact that the reader used relies on optics to read the ridges on a finger, something the gummy could not reproduce.
