Corrected entry: In the scene where the bomb was detonated, and Jack Ryan's helicopter is blown to bits, the laws of plutonium dictate that if Ryan was as close to the blast as he was, he would have been dead from radiation poisoning within a couple of hours.
Corrected entry: At the end when Dressler's car explodes a piece of it ends up on top of a Jaguar, then when the camera pans back the Jaguar is not there.
Corrected entry: B2's never leave the middle of the United States unless they are in the air and are on their way to bomb something. The B2's would never have been stationed in Italy and could never have attacked Russia that quickly, as they would have to travel halfway around the world.
Corrected entry: During the scene at the end of the film where both presidents are sitting signing documents in front of an audience, both start signing left handed, but the Russian president signs the second document right handedly.
Corrected entry: In the sequence where Ryan's helicopter has been hit by the blast of the nuclear explosion, an acoustic alarm goes off during the tailspin. This wouldn't be possible, since every electronic equipment fails after a nuclear explosion due to the nuclear electromagnetic pulse.
Corrected entry: In the scene where Senior Russian officials are entering the underground base of operations, the president is told that American nuclear submarines are pulling out of Norfolk and Kings Bay armed with Trident D3 weapons. This is a mistake for two reasons: a) I speak Russian and I heard them say Trident D5, not D3 and b) American nuke subs are no longer armed with D3 missiles, they have mostly D5's, some have C4's. Also, I'm pretty sure D3's aren't considered first strike weapons, whereas D5's are.
Corrected entry: When the bomb explodes at the Super Bowl in Baltimore it is daytime, but the Super Bowl is always held at night.
Corrected entry: One thing that is created by a nuclear blast is an electromagnetic pulse. This radiates out of dozens to hundreds of miles at the speed of light. The pulse fries all electrical equipment whether they are on or not. Cabot's palm-pilot, and all cell towers in the city would have been destroyed so Ryan couldn't have used it to call Spinnaker.
Corrected entry: Why does Clark find it necessary to cut the Ukrainian fence at all? When the guards discover the hole, we can see that Clark began the cut nearly a foot from the top of the fence. In fact, it is barely 8 feet high - with no barbed wire and a smooth bar at the top. Climbing over it (as opposed to cutting it) would have prevented the guards from detecting his presence. Maybe this is why they don't trust him with an email account.
Corrected entry: When the call comes for the bombing of the aircraft carrier, you think that there would be a chain of command with sort of checkpoints to ensure accuracy and to ensure something terroristic would not happen. They probably did this to keep the plot flowing, but it still seems illogical.
Corrected entry: Shots that are intercut between the scene involving the President's attending the Super Bowl in the football stadium in Baltimore and the shots outside the stadium involving the explosion of the nuclear device and the resulting destruction and loss of life are clearly intended to occur during the same time frame. However, all shots set in the stadium are at night under a darkened sky, and all shots outside the stadium take place in the full afternoon sunlight.
Corrected entry: About an hour into the movie, when Ryan meets Clark after he is ambushed by the two Ukrainian officers, there are a number of mistakes. For one thing, the officers are not speaking Ukrainian, but pure Russian. Secondly, Clark asks Ryan to tell them to take their shoes off - but we've already seen that Clark knows Russian, when he talked to Spassky's mother. Why doesn't he tell them himself? After that scene, he remarks to Ryan, "You know Ukrainian?"... however Ryan too, just like the "Ukrainian" officers, was speaking Russian.
Corrected entry: After the nuclear explosion, when the president is in his airplane, he has a plaster on his forehead, then it disappears and without any scar or wound under it. Later it's back again.
Corrected entry: In the scene where the final assassinations take place the cigarette lighter is pushed. Then the camera cuts to a view of the outside of the car right before it explodes. But before it even explodes the car sitting next to it already has its emergency flashers on. Once the car does explode then the car alarm goes off which is when the emergency flashers should cut on.
Corrected entry: In the scene where the soldiers are rescuing the President from his limo they simply rip his door open. It is well known that the Presidential limo is really an armored vehicle that can withstand quite an impact. I doubt that his door would open so easily.
Corrected entry: In the scene where the Russian president is getting into bed with his wife, his pajamas are dark blue silk. When his guards come to evacuate him in the middle of the night, his pajamas are burgundy.
Corrected entry: In the scene in which Russian migs attack the aircraft carrier, the phalanx close in weapon system doesn't fire at the missiles until they are very very close, in reality they would have been fired upon much further out; and as aircraft carrier has 2 CIWS mounts on each side, there would have been another ciws mount firing on the missiles as well, meaning the jets and missiles would not have had any chance.
Corrected entry: During the scene where the dock worker gets the message that "The day has arrived" the date on his laptop says November 19th, 2002. When he receives the bomb he takes it to the Superbowl, which takes place at the end of January or the beginning of February.
Corrected entry: There's been some timeline juggling, but there's still an error after all the mental acrobatics. This film is set before the other three films, even though it's in modern times. However, if the events of Sum of All Fears were supposed to have taken place before Clear and Present Danger, then how come Jack Ryan met John Clark for the first time in Clear and Present Danger yet they work together in Sum of All Fears, which is technically before it?
Corrected entry: After the bomb goes off, Ryan uses the radio in the helicopter, but anyone knows that a Nuclear bomb's EMP (electromagnetic pulse) would have fried anything with an electronic circuit within the blast radius.
Corrected entry: Jack is talking to his cell-phone after the explosion. I would like to see the phone mast that would stand a nuclear explosion.
Corrected entry: When the bomb detonates, the shock wave hits the helicopter that Jack Ryan is riding in and rips the tail rotor off the helicopter. Without the tail rotor the helicopter should have immediately started spinning out of control and dropped straight to the ground. Instead the helicopter continues forward, arcing downward towards the ground like a fixed wing aircraft.