Revealing mistake: When "Charlie" is first introduced to the class, she struts down the aisle in heels. When she follows Maverick into the building, you can briefly see that she is wearing flats to compensate for Maverick's short stature.
Continuity mistake: At the end, a victorious Maverick is hoisted on the shoulders of the guys. As he goes up, he isn't wearing sunglasses. His head goes out of the shot, and when he comes down, he's wearing a pair.
Revealing mistake: Near the end of the movie, when Maverick's plane is about to be launched, there is a quick closeup of an F14's nose gear, which is quite obviously not hooked up to a catapult or anything else.
Continuity mistake: In the final dog fight scene, Maverick is flying with Merlin as his co-pilot. Merlin's helmet is purple and can be seen many times behind Maverick. In one scene though, the helmet behind Maverick's is orange, which is Sundown's colour.
Continuity mistake: The Navy allowed only one live missile shot for the filming of the movie. Maybe that is why we see so many missiles fired from an empty rack.
Continuity mistake: Throughout the film Maverick's plane has the number "114" on it. However, at the end when he is waiting on deck, the number has changed to "104". This is actually Iceman's plane, which has already taken off. When Maverick launches, the number has changed back to "114" again.
Continuity mistake: In a scene soon after Cruise's partner dies, when he's flying with his new partner, you can see his call sign on his helmet, but when they get on the ground and he's talking to Cruise, all the letters on his helmet are removed.
Continuity mistake: When Maverick rides his motorcycle up the hill to Charlie's house, the sun is just about to set in the background. He stays at Charlie's a while, they drink some wine, then he leaves. As he is leaving, the sun is still setting in the background.
Visible crew/equipment: When Goose and Maverick are in the sea after their plane crashes, look carefully, there's a thin black rope latching onto Maverick and the camera crew's boat. Look carefully and you will see it.
Other mistake: In the last dogfight, we see four MIGs circling around Iceman, trying to get him down. A few moments after, Maverick gets to the scene, and the same shot is being used.
Continuity mistake: In the elevator scene with Maverick and Charlie, Tom Cruise's hair keeps changing.
Continuity mistake: In the volleyball scene, Maverick can clearly be seen looking at his watch because he has a hot date with Kelly McGillis, however while they are actually playing, it is easily noticeable that he is no longer wearing his watch.
Continuity mistake: In the final battle scene, which takes place way out over the water, in some of the F-14 shots, mountains can be seen in the background.
Revealing mistake: In every in-flight cockpit scene a brass hand wheel is visible on the right side of the headbox of the seat. The only time this hand-wheel is installed on the seat is to disconnect the seat from the aircraft and to disarm the seat. Therefore, the plane and actors in those scenes were on the ground with a moving camera because there is no way that an F-14 would be allowed to fly with "dry" seats.
Visible crew/equipment: In the sceen after Maverick and Goose were told that they would be going to Top Gun the next scene shows Maverick on the runway riding his motorcycle as planes fly by. If you have your DVD settings on full screen you won't notice this but on wide screen you will. You can see the motorcycle that he is riding is strapped down to a trailer with 2 blue tie-down straps. Also, if you listen and watch closely you can tell that Maverick is not shifting and giving gas to the motorcyle at the right time. The only reason I know this is because I have been riding for over 10 years. If you give a sport-bike like that gas, it goes. He gave gas and it never even moves on the screen. Hard to do when you are strapped down to a trailer.
Continuity mistake: When we are first introduced to Maverick and Goose, their Tomcat crosses the screen, right to left, in close-up, slowly. It's nose is marked 203. Then we see the other Tomcat flying with them, and it is number 114, and its crew is Cougar and Merlin. But all the shots after this place Maverick and Goose in 114.
Continuity mistake: Before the final dogfight the back wings on Mav's jet say YYY, afterwards they say XXX.
Continuity mistake: In the dogfight where Cougar freaks out, when Maverick and Goose fly upside-down to give the MIG the birdie, the names of each pilot are not only upside down, but they are mirrored too. If you look at the names upside down, you can't read them.
Factual error: In all sequences where Maverick "puts on the brakes", he is shown pushing the throttle quadrant forward and pulling the stick back. This would put him in a full-afterburner climb, but you don't really stop and it doesn't work in a medium speed tail chase (which is easier to film). The air brake does effectively nothing on the F-14 because it is too small, and not deployable at full power.