Factual error: When the ship launches the missile to take out the satellite building in Hawaii they shoot a Harpoon missile. The Harpoon is only an anti-ship missile, and can't be used against land targets.
Factual error: When the aircraft window is shot out, depressurization of the plane occurs shortly after the door of the plane blows off. When depressurization occurs, the pressure in the fuselage drops. Why would the door blow-out now when it held before with higher (normal) pressure?
Factual error: Just before Sean Miller shoots the bookseller he takes the safety catch off the Ak-47. However, he moves the catch two clicks down and then fires the weapon on automatic. This is incorrect. For most modern weapons the safety catch feature goes safe-semi-auto, however the AK safety catch goes safe-auto-semi.
Suggested correction: I watched this scene twice to verify - there is only one click.
Factual error: The weapon Palmer used to shoot down one of the enemy fighters was the M79 grenade launcher. This weapon's projectile speed is lower than the speed of the plane, so it would be impossible for Palmer to hit a target flying over 100mph side-by-side.
Factual error: The science teacher makes a water molecule and claims it makes up "96% of the human body." This is simply wrong. Depending on the person, it usually ranges between 70-80%, with around 15-18% of us being carbon.
Factual error: The forensics report says that Leptospira interrogans is the virus which causes Weil's disease. Leptospira is actually a bacterium. (00:52:20)
Factual error: In the beginning of the movie, where the skinheads beat up the Vietnamese victims in the underground train station, the train station is labelled as Footscray station. This is wrong because as most Melbournians would know, Footscray station is an open above ground station. The station in question is actually Richmond station. They only labelled it as Footscray station because Footscray is notorious for its large Vietnamese community.
Factual error: When Gus brings Renee's body over to Jeff, notice her feet. Shes been dead for a while yet her skin is normal color as if she was alive.
Factual error: The prison bus manages to utterly defy physics. Scott throws a grenade which detonates by the rear left wheel. However, the bus then rolls over toward where the explosion occurred, not away as it should have done.
Factual error: When all is back to normal and Ash is back at his job at S-Mart, a witch shows up and starts trashing the place. Ash is knocked behind the sporting goods counter, where there is (of course) a cabinet containing guns. Ash then jumps up and blows the witch away, firing 37 times. He's using a .38 caliber Winchester Model 1892 Saddle Ring Carbine with a "Trapper" loop lever. It only holds 9 rounds.
Factual error: During the flashback of Mr. Pink escaping, he smashes a car window and the window shatters into several large pieces. Car windows are made of tempered glass, which shatters into hundreds of small pieces.
Factual error: In the bathroom scene when Fishburne shoots and kill James Morris. He uses a revolver with a silencer. Silencers don't work on revolvers as it does not cover the ammo cylinder.
Factual error: In the scene where Redford's character enters through the secured entrance with the stolen key-card, it shows a printer printing the time he entered. Then after his walking and getting up to the top floor and trying to get past the voice verification system and having to do it twice, they show the same printer printing the time he passed that checkpoint, and it was only one minute later than the previous time. Even though seconds are not shown, all of these actions must surely have taken longer than 1 minute and 59 seconds.
Factual error: A digital billboard shows the date as "Thursday, November 23, 2009"; that date was a Monday.