Corrected entry: The S.H.I.E.L.D. helicarrier has the number 64 painted on it in several places. 1964 is the year the first Avengers comic was released.
Corrected entry: During the scene where Tony is "threatening" Loki in Stark Towers, he gets a glass of alcohol and drinks it as he is talking to Loki. He is then picked up by the neck by Loki and is thrown to the ground, and his glass is nowhere to be seen. It is not seen dropped or shattered, and it is clear he did not have time to back up and put it down.
Corrected entry: In the scene where Thor is dropped from the cell chamber, the ship is supposed to be in free-fall, having lost 2 engines. I've seen this a few times now, and I'm pretty sure the one Iron Man is restarting isn't back on, and the second one has been disabled. If this is the case, Thor should not fall. Neither should the characters running about the ship be experiencing gravity.
Corrected entry: The nuclear missile that is fired at Manhattan, the Air to Ground (AGM)-154 Joint Standoff Weapon (JSOW) does not actually have nuclear capability. The F-35 Lightning II, which fired the missile, however, can actually carry the JSOW and will eventually be able to carry the B61 nuclear bomb.
Corrected entry: When the arrow explodes aboard the ship Captain America [already in his outfit with long sleeves and has auburn hair] tells Tony Stark [wearing a long sleeved shirt, black hair] to suit up. They both leave but one of them can be seen running seconds later with auburn hair and a short sleeved t-shirt.
Corrected entry: Helicopters work by creating a low pressure zone above the rotors, by forcing the air down. In other words, sucking air away from the top side. Since the helicarrier is basically a giant helicopter, it's lifted by rotors, it should be sucking air in from the top. But judging by the way Banner's jacket blows, it's blowing air out.Friso94
Corrected entry: Thor's hammer has a slightly altered appearance in this film from how it was seen in Thor. Where before it had a mostly brown handle with a brown strap at the end, now the end of the shaft has a silver cap, with the brown strap connected to each side, and the handle is more prominently ringed by silver. While some may rationalize this by suggesting maybe Asgard redesigned it between movies, remember that this is an ancient weapon and the Asgard do not seem like the type of people who would alter their holy artifacts with superficial changes.Vader47000
Corrected entry: Towards the beginning of the film Steve Rogers is working out his frustrations on a punching bag in a gym. He finally hits the bag so hard that it breaks open and flies against the wall. Watch the chain it was hanging from when he makes the final punch. Despite the force of the blow the chain connecting the bag to the ceiling stays completely motionless.BocaDavie
Corrected entry: Early in the final battle, there is a scene where some of the letters on the STARK sign on Stark Tower are falling off of the building. One of those letter was A, but at the end of the movie, the A is still on the tower.
Corrected entry: In Iron Man 2, Stark makes the new triangle thing that's saving his life and he has it throughout the Avengers, suit on or off. But in the last battle up from when he jumps out the window after his little chat with Loki to the end, he has the other one, the circle one that was slowly killing him.
Corrected entry: Towards the end of the movie, when Captain America combats the aliens in the building with the civilians held hostage, he throws his shield and is left to fight them hand to hand. A grenade is dropped and in the meantime, his shield is nowhere to be seen. Cap rushes to the window in one shot and in the next he is holding his shield in time to protect himself from the blast.fropowder72
Corrected entry: Near the beginning of the film, Tony Stark views the information on the other superheroes before they all come together, on hologram touch screens. If you look closely at one of the screens, you can see footage of Black Widow and Hawkeye fighting side-by-side. That same footage was taken from the final fight scene of the movie, so it hadn't happened yet.