Continuity mistake: When the team are about to jump from the cable car into the river, the view from ground level shows a bare road with no snow on it on the right and a line of trees on the left with German trucks parked next to them, but the view from the cable car shows a snow-covered road and no trucks beside the trees. (02:06:00)Greg McCreanor
Continuity mistake: When the spaceship first springs a leak and begins to sink, the interior shots show it tilting to starboard; Taylor falls against the starboard bulkhead and the other two survivors need to brace themselves from slipping. All of the exterior shots of the ship show it level from port to starboard.BocaDavie
Continuity mistake: When Sgt. Peterson is standing on top of the corrugated tin under the helicopter, his safety strap attached to the helicopter appears & disappears between shots.
Continuity mistake: When the sub surfaces at Zebra it is shown running up a tower. When we next switch to a close-up there is no tower and it is running up an antenna.
Continuity mistake: Just after the opening credits, Gregg Parker arrives at a fire site, in a helicopter, with a woman he met on a plane. He has a conversation with Chance Buckman as the rotor on the copter slows down to a near stop. As the conversation continues, they cut to a slightly different shot, with the copter still in the field of view, only the rotor is now turning quite rapidly.