Deliberate mistake: After the scene where Snipes gets an ID on Jagger from the little girl, one of the officers calls to inform Busey, "A scar under his right eye", yet you can see him form the word "left". I guess "right" was dubbed in to save a re-shoot.
Deliberate mistake: In the beginning hijack scene after Terry gets shot, he shoots Ty in the back. In other scenes previous to this, and mentioned by Pete, all the hijackers had on parachute packs. However, Ty is not wearing one as he should be.
Deliberate mistake: Just before landing on the police headquarters roof, the 'hijackers' are shown in semi-sunlight right after jumping out of the plane, probably to show how many jumpers there were. The immediate scene afterwards, they are all shown in pitch blackness coming in close to the building, and then landing on the roof.