When Kabakov is first seen in the hospital, he is unshaven. Moshevsky leaves to make a phone call, and is killed. A short time later, when Kabakov is informed that his friend was killed, he is now clean-shaven.
From when the fuse is lit to when the bomb actually goes off in the blimp, a ridiculous amount of time passes. The fuse is lit right underneath the bomb yet it takes around 10 minutes to burn the short length to the bomb.
The same game-winning touchdown is shown twice: the 64-yard touchdown pass and over-the-shoulder catch by Lynn Swann is shown before Kabakov kills Lander and Dahlia, then it is shown from a different angle several minutes later just before the blimp crashes into the stadium (obviously meant to be a separate play, but it's the same touchdown).
When the blimp takes off from the base after loading the bomb, Robert Shaw's character runs to the brown unmarked car and pulls the dead agent out. You can see that the emergency red light on the roof is operating. As he's getting into the car, you can see the light is off but as he's driving towards the helicopter, it's operating again.
When Lander (Bruce Dern) is about to shoot the TV technician from behind, inside the TV control truck, the technician flinches and grimaces in reaction to the gunshot a split second before the shot is fired.
As the commandos are leaving the Beirut compound, Moshevsky yells to leave one of the commandos who was killed, saying "He's dead, anyway." The Israeli army, and the Commando units in particular, have a policy similar to the US Rangers, to never leave a man behind, even if killed.
When Moshevsky's body is to be flown back to Israel for burial, he is being loaded aboard a TWA freight flight. Jews being brought to Israel for burial, especially a Mosad Officer, are always brought by an El Al flight.
As the helicopter is pulling the blimp out of the stadium, the scoreboard reads STEELERS 21 COWBOYS 17 with 1:20 left in the SECOND quarter. The actual score at that time was COWBOYS 10 STEELERS 7. Lynn Swann of the Steelers was already seen making his touchdown catch from Terry Bradshaw with 3:02 left in the game. A Cowboy touchdown with 1:48 left in the game gave the FINAL score of STEELERS 21 COWBOYS 17.
During the raid on the Black September camp, an Israeli commando fires a suppressed rifle, and the rifle generates a bright muzzle flash. Noise suppressors work by slowing the release of gases from the front. Muzzle flash is the unburnt particles of powder being ignited outside the barrel. In this case there should not have been any flash as the particles would have been consumed in the barrel or suppressor.
When Kabakov suggests shooting down the blimp, he is told by someone with knowledge of the blimp that he can't do that because it's filled with helium. Helium is an inert, non-toxic, non-explosive gas. Shooting the blimp would only be dangerous to the public if it were filled with hydrogen.
When Bruce Dern's character is flying the Goodyear blimp in the first half of the SuperBowl the reflection of the stadium is visible from his cockpit window, however the reflection is that of an empty stadium.
After Bruce Dern's character test fires the bomb in the old aircraft hanger he rushes inside to survey the damage. The metal wall reveals thousands of tiny holes caused by the exploding spikes however, the wooden beams which criss-cross the exact same wall are completely unmarked.
Obviously reversed film footage when the blimp is being pulled away from the stadium; the guide ropes on the nose of the blimp, instead of trailing away from the blimp (if it were being pulled backwards), are trailing towards the tail of the blimp, just like they would if the blimp was moving forward. In addition, the helicopter's blades appear to be spinning backwards.
About midway through, as Fasil is being pursued across a beach in Miami, he fires a shot at the agent pursuing him. The agent falls flat in the sand and the bullet strikes right next to him, kicking up some sand, and creating a very loud ricochet(!) sound effect. Bullets shot into sand don't normally ricochet.
Two Goodyear blimps were used for the suspenseful conclusion. The base scenes where shot in Carson, CA using the Columbia. The Super Bowl scenes were shot in Miami, FL using the Mayflower being a much smaller blimp than Columbia. So the blimp shrinks, gets big again and then shrinks again in size.
When Robert Shaw's character is running along the sidelines during the Superbowl, a wardrobe tag is visible behind his coat collar, but disappears after he enters the tech vehicle.
The president shown attending Super Bowl X was Pres. Jimmy Carter. Super Bowl X was held in January 1976. Pres. Carter was elected in November 1976 and took office in January 1977. Pres. Ford was in office during Super Bowl X.
When the blimp takes off from its base in South Florida en-route to the SuperBowl, you can see mountains in the distance. South Florida's terrain is flat.
When the armed police officers are receiving their final security instructions at the stadium, they are told to have "empty chambers, safeties on". As that is said, however, the on-camera officer is seen inserting his loaded magazine into his carbine, THEN advancing the bolt - thus having a full chamber, not an empty one.