Corrected entry: Ripley and the remaining marines had welded and barricaded every way into the Medical Centre to keep the creepy-crawlies out. They checked all the construction blueprints. Yet they never thought to check the ceiling space, which was covered with a flimsy, lightweight grating that wasn't even bolted or welded down - Hicks merely lifts a panel easily with the tip of his rifle. I always thought that was a hoot.
Corrected entry: In the scene where everyone decides to leave and nuke the site from orbit, where was Bishop? He was last seen in the Med Lab studying one of the face-huggers. Yet he was nowhere to be found when everyone decided to leave, when everyone was outside, or when the ship crashed. Then, he's suddenly back saying that he'd check on Lt. Gorman and continue his research back in the Med Lab. Come to think of it, where was Lt. Gorman in all of this too? He was last seen getting knocked out-cold. Nobody was carrying him or helping him in any of those same scenes. Were they just going to leave him and Bishop in the Med Lab while they nuked the site from orbit?
Corrected entry: As somebody has correctly pointed out in another submission, the hangar in the main spaceship is decompressing when the doors are open, and the draft from the escaping air is what causes the mother alien to loose grip on Ripley. How come therefore, when the doors are closed again, Ripley and Newt are able to breathe in the hangar? If all of the air inside the hangar was just expelled out of the airlock door, how come the hangar has air pressure? Admittedly, the hangar is very big, but the door is like 7 or 8 metres across, and the wind blowing is strong enough to push out the alien, so the amount of air lost in the time it is open for is massive.
Corrected entry: When the Alien bursts in through the window of the APC after rescuing the marines it clearly sprays red blood when it smashes the window, even though the Alien has yellowish acidic blood.
Corrected entry: The marines are not allowed to fire in the reactor (which later explodes from damage caused by the APC with a 30 megaton blast), however it is described as a FUSION reactor. Fusion reactors do not cause nuclear explosions if they overheat. They can't. They just turn off.
Corrected entry: When the marines are in the dropship and ready to go to the planet below, the couplers release and the ship literally drops from the Sulaco which is in a gentle orbit. The dropship should have continued to move with the Sulaco in orbit.
Corrected entry: In the scene where Bishop "does the thing with the knife," it appears Ripley is sitting at the end of the table with the rest of the marines. She is watching the events with Bishop and Hudson. However when Bishop sits next to Ripley, she's at a different table and her back is to the other marines. Did I see this right?
Corrected entry: At the beginning of the movie, when Reidecker is discussing Newt's parents' prospecting claim with Al, he refers to them as "a mom and pop survey team" as if he did not know who they actually were by name. However, this remote colony had only 158 members, so they would have all known each other very well.
Corrected entry: In the final rescue of Newt, Ripley wisely uses flamethrower bursts to make sure the small hallways are clear of aliens. However in all other scenes involving the Incinerators they leave a flaming wash behind that continues to burn for a while (ex. the APC rescue). Obviously the director couldn't have Ripley wait around for the wash to die down so the bursts burn clean.
Corrected entry: When Vasquez cuts a hole in the pipe for Bishop to up link with the mother ship to get the other landing plane, the plate from the pipe falls in to the hole. When Bishop is in the pipe, Vasquez and Ripley place the cut out piece back on the hole to weld it in place. The cut out piece is smaller than the hole. It was cut out from the pipe and should not fit over the hole without falling through. (01:40:20)luchador