When Pam and Bill are looking up with binoculars and watching Ralph grab onto the space shuttle and land it safely, every shot through the binoculars shows Ralph and the shuttle with the ground beneath them as if Pam and Bill were above the shuttle as this is happening, an impossibility since they are on the ground.
When Ralph goes through the fence onto the Air Force base, the sign reading "No Trespassing - US Military Installation" is facing inside towards the base instead of outward towards someone's view of trying to enter the base.
When Ralph, Pam, and Bill are watching the shuttle come in with their binoculars Ralph is worried because the landing gear on the shuttle is in the up position and he doesn't know how he's supposed to land it. Pam suddenly yells "Bill, I see it, there it is!" and when we see her point of view shot of the shuttle through the binoculars you can clearly see the rear landing gear on the shuttle drop into position.
In the syndicated version, some of the car horn sounds were lost. For example, outside the military base when Ralph's condition is causing the car horn to sound, he playfully does "shave and a haircut, two bits" with his hand, but no car horn is heard.
When Ralph is running from the monster in the tunnels, the shadow of the cameraman chasing him is visible on the right side of the frame.