(at around 1h 29 mins) The whole band Lynyrd Skynyrd did not die in a plane crash. Although their plane did crash, only three members of the band were killed along with three other passengers. The other seven members of the band escaped with injuries.
(at around 35 mins) When the prison guards are examining Cyrus' cell and find the fake portion of the wall, one camera angle shows the scene from behind the wall. When it does, it shows that the fake portion is painted the same green color as the rest of the wall. Cyrus could not have gotten to the opposite side of the wall to paint it, nor would there be any reason to.
(at around 1h 40 mins) At the end of the movie, when Cyrus crashes through the overpass, at first he appears to be coming out the other side, and that he will land behind the fire truck onto the street. However, he somehow falls through some power lines and lands on a conveyor belt that drops him under a pneumatic hammer looking object that appears to be in the middle of an industry yard, yet they are supposed to be in the middle of Las Vegas.
Crew or equipment visible
At Lerner Airfield, the jet Francisco Cindino is trying to escape in is hit by a crane arm and then crashes into gas pumps and a small building. After it stops, Francisco is trying to climb out of the back of the broken in half jet and gasoline is shooting out of the ground where the knocked over gas pumps were. Right then while Francisco is yelling for help and hanging out of the back of the jet, and Cyrus' and Swamp Thing's legs are to the left of screen, between Cyrus' left leg and Swamp Thing's right leg there is a man very far off in the distance. He is wearing a white shirt, black pants and some kind of hat and is running and carrying something red in his right hand that resembles a bag or maybe a bucket. There is no character in the movie that fits that description during the Lerner Airfield Scenes. Nor is there any character that could be off in the distance at that moment. So it's some kind of crew member or first responder.
Errors in geography
At the end of the movie Poe and Larkin are fighting Cyrus and Swamp Thing on a ladder truck in a long tunnel. There is no tunnel like that in Las Vegas. The tunnel used is the 2nd Street tunnel in downtown Los Angeles; however, that tunnel goes for only 1500 feet, which is not nearly as long as depicted in the movie.
When "Swamp thing" announces to land the jailbird in Las Vegas, he announces that he has to land on the strip, since the damaged aircraft won't make it to the airport. seconds later, he flies over the hard rock cafe. from the hard rock cafe, it is only two blocks to the airport, but five blocks to the strip.
(at around 5 mins) The judge that sentences Poe claims that Poe does not have the same right of defense because he is combat trained. While it is a common myth that people trained in combat, such as soldiers, martial artists, and boxers, have to register themselves as dangerous weapons, this is completely untrue. All people are held to the same standard regarding self defense, regardless of their combat training.
Incorrectly regarded as goofs
When Malloy plants the gun on the DEA agent he places the gun in the sock of his left leg, however when the DEA agent reveals himself on the "conair" plane, he draws the gun from the sock of his right foot. But there's a significant time gap between when Sims gets on the plane and when Pinball releases him from his cuffs to reach for the gun, and during the chaos that ensued on the plane he might have switched the gun to his right to make it more easily accessible,
(at around 1h 21 mins) When Diamond Dog gets the small arsenal out from the belly of the plane, he opens a box of shotguns. He pulls them out and throws them to nearby cons, but when the camera switches to the cons, they are catching assault rifles, not shotguns, because he's opened the second box as well.
An aircraft carrying several high-security prisoners would not land at a civilian airport to transfer prisoners. This would take place at a military airfield. In addition to this, a US marshal being shot and killed on the airfield and an aircraft full of prisoners escaping would result in the airport being immediately closed down and sealed off for investigation, so there is no way that "Uncle Bob's" scenic tour aircraft would have been allowed to depart shortly afterwards.
Baby-O was refused by Cyrus to get off the flight with Poe because "the men they're (the DOC officers at Carson City) expecting are white", which Cameron Poe then tells Baby-O he'll go off anyway and scream to alert about the hijacking. Cyrus already figuring that might happen with any of them going off the plane "gags and bags" the prisoners and the disguised correction officer and pilot walking off the flight. The prisoner kneeling to the right of Cameron Poe as they're being gagged and bagged is black and could have been easily substituted for Baby-O instead of Cameron deciding to stay on the plane.
Master criminal Cyrus takes every precaution in the world in order to execute the perfect airborne prison escape, yet instead of destroying a few pieces of paper which are a virtual road map to his plan (including schematics of the plane and they "keys" required to decode the rendezvous points), he takes the time to seal them in the wall of a cell he knows he will never see again.
(at around 1h 27 mins) When the plane is tied to the cement post and is being shot at by Cyrus, there is a frame that clearly shows the hook detached from the rope. It is barely visible in real time, but if viewed frame by frame, it is evident. This same rope attaches itself to Malloy's car seconds later and lifts it into the air.