Factual error: Doug Masters and his friend Reggie would be grounded on the spot and have their pilot's licences suspended (and in all likelihood cancelled) after buzzing the motorcyclist. Their flying is grossly unsafe. They would be visible for miles flying well below a safe altitude, but even if they were not seen their radio traffic and radar tracking would tell the authorities everything they needed to know.
Continuity mistake: When Terri is at the party, her blonde wig changes shape and size many times.
Visible crew/equipment: When Charlie walks down to the front of the class in the hanger, Jester is the only one at the front. Look at the reflection of Maverick's glasses, and the reflection shows lots of people standing in front of him, likely film crew. (00:26:20)
Visible crew/equipment: When the Kurgan is fighting Ramerez he hits the wall and stones fall on him. A crew member can be seen pushing the stones out. (00:56:35)
Visible crew/equipment: During the final fight scene where Jackie takes on the Amazonian women, there are several shots where dressed up stuntmen double for the women.
Revealing mistake: When Ripley first burns the egg plants inside the nest, the Queen screams and moves her head. The steel rod used to hold the Queen's head to the rest of her body is easily visible.
Other mistake: When Chozen is buying vegetables from the villagers, one of the weights from the scale is knocked onto the ground. Daniel picks it up and realises that its not a real weight and breaks it in half. If Chozen wanted to cheat the villagers when he weighed their vegetables, he would need weights that were heavier than normal, not lighter plastic ones. Lighter weights would mean that Chozen would need to add far more of the light weights to make any amount of vegetables balance out, therefore he would be paying more for the vegetables than they are worth.
Visible crew/equipment: When Alan is struggling with Barbara on the drawbridge, the shadow of a camera/operator is on Alan's back as they get near the car. (01:30:30)
Audio problem: A soda can that is supposed to be full hits the man. When the can hits the ground you can hear that it's empty.
Other mistake: In the final scene of the movie, Megan starts a boat motor and uses the propeller to hit Jason in the face, who has been chained down underwater. But if Jason can only barely reach her foot from underwater, there's no way the boat propeller is underwater far enough to reach his face. (01:17:50)
Suggested correction: The boat was driven a good ways, it's not like they were shallow and then all of a sudden deep. They were deep for a little bit. I mean not so deep like the ocean, but it was a good enough ways for someone to drown. Megan is tall for a girl and Jason is a big guy and the propeller is right at his head/neck.
You are very much mistaken. The boat propeller is too high to reach Jason's face.
Visible crew/equipment: When you see the plane flying to Tibet you can clearly see the blades of the helicopter from which the shot was taken at the top of the screen. (00:49:20)
Continuity mistake: In the battle scene at autobot city, Megatron orders Soundwave to jam the transmission that Blaster is sending to Optimus Prime. When Soundwave ejects Rumble, Frenzy, Ravage & Ratbat we see them flying through the air transforming simultaneously and and both Rumble & Frenzy are coloured the same (red & black) when Rumble is supposed to be purple. (00:15:08)
Factual error: When the Delta Force lands on a beach, prior to their assault, their landing craft is lit up like a christmas tree. The commandos wear dark uniforms and have blackened their faces, but they also carry bright white ropes around their chests. Some of them are scuba-divers, wearing yellow oxygen-tanks. In short, in the real world they would have been spotted within minutes.
Continuity mistake: In the sedan/pickup chase, both of Cobra's headlights are shot out at the start with pinpoint accuracy. A minute later as the cars race down the freeway, the holes where Cobra's headlights used to be are filled with black plastic discs.
Continuity mistake: In the scene where Bunny kills the one legged Vietnamese with the butt of his gun, watch the cigarette in Sgt. O'Neill's mouth. In a shot after the kid is dead, the cigarette in O'Neill's mouth is short. When it shows him again, the cigarette has mysteriously grown. (00:50:00)
Factual error: Calendar date at the very beginning of the film (in the police station), shows the dates of Saturday 20th/Sunday 21st July 1983. However the 20th and 21st July 1983 fell on Wednesday and Thursday.
Continuity mistake: Rolland Tyler (the set-up special effects guru) and his F/X assistant Andy have one of the "dirty" cops in the truck of an old car. To get a confession out of him, they take him to a secluded place under a highway overpass and continue to ram the car, trunk first, into the overpass pillars with the cop still in the truck. The man buckles, but not before about six rear-end hits. Yet, there is very little dents or damage to the back of the car throughout the ordeal.
Revealing mistake: The "blower" on the yellow Firebird never runs. NO wonder he couldn't beat the Wraith. (00:44:10)
Continuity mistake: When Jack Burton and the rest of the gang escape from the Wing Kong Trade Centre the first time, the guards fire at the left side of the bus breaking the windows and making holes in the bodywork. When we see the bus a few seconds later as it is driving away, it appears undamaged.
Continuity mistake: Hook's earring appears, when he talks to Crissy by the fridge after her late night out.