Corrected entry: When the major is fighting John on the plane wing there is a white spiral in the middle of the engine, but when the Major falls into the engine there is no spiral.
Corrected entry: McClane's fireman's jacket gets progressively bloodier throughout the film, but around the time when he is fighting the terrorists on the plane's wing, it is miraculously clean again.
Corrected entry: When the plane explodes at the end of the film all the planes circling can now tell where the ground is and start landing. Why did they not do this earlier when the Windsor (British) plane crashed?
Corrected entry: Now, I've never been to IAD (Dulles) or LAX but I've been in several airports and have never, ever seen a control tower in such close proximity to the terminal area that one can take an elevator to, let alone be so unsecure that civilians and reporters and camera crews can go into unmolested.
Corrected entry: The plane crashes into the runway because they think they are higher than they really are, but the runway lights are never turned on. I'm no pilot, but I don't think a pilot would try to land a plane on an unlit runway.
Corrected entry: Forget BWI, why couldn't they just light up the runway with gasoline in the beginning?
Corrected entry: Bruce is sitting in what looks like a C-130 while terrorists throw grenades in it through the window. Never mind the grenades going off too late, because they wouldn't all have made it through the small window anyway. In fact some of those grenades would've bounced back killing the terrorists also, which would've made for a surprising end to this movie. (01:17:45)
Corrected entry: Dick locks the door using the slide lock inside, so Holly couldn't have got in to electrocute him.
Corrected entry: At the end of the film when John and Holly get driven away on the back of what resembles a golf cart, the long shot of them clearly shows two dummies that nearly fall off when the cart sets off. (01:51:35)
Corrected entry: The last scene shows the bad guys in their plane ready to take off - driving down the runway. Then Bruce gets from the helicopter to the plane's wing, fights with each bad guy, falls off, and the plane begins to take off - again. At no time did the plane turn to circle to another runway. It seems this runway was about 2 to 3 times as long as it should have been.
Corrected entry: Early in the film, McClane describes Cochrane's pistol to Lorenzo as a "Glock 7" which is made in Germany. While the model could easily be made up for the movie (there's no real Glock 7, and even the mostly non-metal models are easily detected), Glocks are Austrian, not German.
Corrected entry: When Willis is in the pilot's seat of Esperanza's plane, he ejects when grenades are thrown in by the terrorists. First of all, those aircraft are sealed tight and have no canopy or hatches to blow off for an ejection. In that case, ejection seats would be useless. Also in that scene, multiple grenades are thrown in the cockpit, yet it takes 23 seconds before any of them blow. The type of grenades they were using, which were US issue, have a fuse no longer than 7-8 seconds upon release.
Corrected entry: If the terrorists had sailed off in the 747 in the end, what then? They had no way of protecting themselves from fighter planes, which would certainly have been on their tails. So what could their next move have been?