Continuity mistake: When Klink is "taken hostage" in the barracks, he is in his tunic only. Later in the car he has his overcoat on. He was supposed to be kidnapped, he could hardly ask Hogan to let him slip into his office for his coat.
Revealing mistake: When the homing bomb hits Burkhalter's car because Klink used the radio, you can see the mini tank from "Tanks for the Memory" (s2e9) sticking out of the wreckage.
Continuity mistake: In the tunnel, Hogan lays out the plan. The arms of the man next to him goes from crossed to by his side between angles.
Continuity mistake: After Newkirk photographs the blueprints, he loosely rolls them up and goes to hand them to Carter. A second later, they are tightly rolled with a rubber band around them.
Continuity mistake: When Schultz comes over to talk to the boys, they open the truck door that has a map on it in chalk. They erase it, and go to close the the door on the right side of the shot. When the camera angle changes, they're closing the truck door again.
Six Lessons from Madame LaGrange - S5-E22
Continuity mistake: When Hogan is talking with Lily Frankel before the double agent comes over, Hogan is lifting his beer. When the camera goes to close up, he's lifting it again. Also, in the long shot, the beer is down about three quarters of an inch from the rim. In the close up, the beer is nearly full.
Continuity mistake: The boxes being carried into the buildings in the beginning of the episode were about sixteen inches high by three feet long. When the bomber plane is dropping bombs, what drops out is a lot bigger than the dimensions of the boxes.
Continuity mistake: Klink comes out with the "insurance policies" in his hand. They are lying beside each other, with a little space between them, and tilted in one position in his hand. When the camera goes into a close up, they are touching, and in a different position.
Continuity mistake: When the woman is kissing Klink in town, she hands a note to the boy who puts the note inside the spare tire's hubcap. There was no tape to stick it anywhere, yet when LeBeau goes to get the note, it is stuck with tape to the center of the spare tire.
Audio problem: When Klink comes into the barracks, he puts the bottle of alcohol into his jacket to hide it. When he does, you hear a distinct clink (no pun intended) of glass on metal. None of the POWs wear anything that would cause this.
Continuity mistake: After Hogan calls off the volleyball game to go see what Kinch wants, he goes into the barracks. From the outside, the door is already open. When the camera shot is indoors, Hogan is opening the door again.
The Antique - S5-E12
Visible crew/equipment: When Burkhalter first comes into the office, the camera rolls a little closer. As it does, you can see the shadow of the camera on Burkhalter's arm.
Continuity mistake: When Shultz comes out of the NCO Club, he bumps into Klink. After yelling for a moment, Shultz talks with Klink. While talking, Klink has his monocle on. After taking a couple of steps past Shultz, he turns around and addresses Shultz again; when he does so, you see that the monocle is missing, without being taken off.
Continuity mistake: When out at the volleyball net, Hogan is called by Kinch. While walking in, Hogan's hat is positioned as normal. When the shot is inside, the bill of his hat is down shading his eyes, and he pushes it up into its regular position.
Other mistake: Hogan is disarming a booby trap briefcase. The bomb expert tells him over the radio he has to decide to turn the handle clockwise or counterclockwise. The expert doesn't know which way to turn it. Hogan turns the handle counterclockwise and disarms the booby trap, and the expert says counterclockwise. There's no way the expert would have known which way Hogan turned the handle. (00:21:50 - 00:22:26)
Continuity mistake: In this episode, the picture next to the light switch wire is a group seated around a table. In "The Defector" (S5:Ep10) the picture was of Hitler making a speech, and the microphone he's speaking into hides the Heroes' bug.
Continuity mistake: Before Hogan lets Klink have the ball to hit, the camera does a close up on the volleyball. It can be seen to be a dull light brown color. After Klink hits it, and it soars up into the air the camera cuts to Hogan and Klink, and back again. When it does the ball is now a shiny orange like color.
Revealing mistake: The bunk that is the entrance to the tunnels appears to be moving upward about a split second before Newkirk taps the hidden key to activate it.
Revealing mistake: As the building is being prepared for the upcoming event, and men are going in and out, as Shultz goes to report to Klink, look past him and the roof behind him. You can see the studio water tower in the distance.
Continuity mistake: Toward the end of the episode, Hogan turns Shultz around, grabs one of the grenades Shultz is carrying, and hands it off. The one grabbed was closest to Shultz's left side. A few moments later, Shultz turns his back briefly to the camera; there is now a space between the grenades, as if Hogan grabbed the middle one.