Character mistake: Characters refer to the Dallas and the Red October as "ships," but anyone stationed aboard a submarine would know to call it a "boat."
Character mistake: When airport control makes the call to "change the boards" to delayed, Auckland (New Zealand) is spelled Aukland.
Character mistake: At the ravine, upon learning that the bridge doesn't exist yet, Marty states to Doc "We can't wait a year and a half for this to be built". If you carefully look at the sign, it says the bridge is opening Summer 1886. That's under a year away, not a year and a half from Sept. 1885.
Character mistake: Big Ben is loaded feet first into the ambulance, he should've been loaded head first.
Character mistake: When Raphael is chasing Casey Jones after their fight he vaults over a taxi hood, never takes his eyes off Casey, but he somehow loses him.
Suggested correction: 2 things are happening; a shell backed stocky Raphael is chasing a lighter human athlete Casey. Casey has freedom of movement, whereas Raphael can't stray much from the shadows in hiding. :-) A knocked out Casey wouldn't be helping the Turtles out of the next evening with that memorable entry so I'm glad Raph lost the chase.
Character mistake: In the opening scene when the bandit is going for his trigger finger, Billy is seen with his eyes slightly open in the background. His eyes are then shown to open suddenly with dramatic effect. (00:05:50)
Character mistake: When Harrigan is watching the surveillance video by Bill Paxton he states that the helicopter is a silver Alouette when it is actually an AS-350.
Character mistake: In the chicken restaurant, after Jump gives the kids change to play the games he ask the cashier how much is the food and the cashier says $57.70. After Jump again asks how much, the cashier then says $57.90.
Character mistake: When David is at Nick's house looking at his motorcycles, he says "Oh wow, a '48 FL", then asks for the key and cranks it over with an electric starter. The first Harley with a starter was a 1965 FLH.