Good-Bye Radar: Part 2 - S8-E5
Other mistake: When Potter enters the Swamp, his rank insignia is placed wrongly, with the feet of the eagle pointing to the front of the collar. The feet should point toward the shoulder side of the collar, as they are the next time we see Potter.
Good-Bye Radar: Part 2 - S8-E5
Other mistake: As the camera cuts to Hawkeye and Margaret working, the man behind her is holding a chest X-ray, but it's upside down, which would be useless as a guide.
April Fools - S8-E25
Other mistake: When Charles, BJ and Hawkeye steal Margret's tent, what's left is a frame of wood, including roof beams. From other episodes we know that the tents are held up by a wooden frame around the edges and a center pole. We even know for a fact that Margret's tent is built that way, because in an earlier episode Hawkeye and Trapper saw through the center pole of Margret's tent. We also know that the construction principle of the tents hasn't fundamentally changed since then, because when Hawkeye finds the oatmeal in his boot earlier in the same episode, you can see the center pole of the Swamp.
Other mistake: Rosie says she took the darts away from Klinger and BJ, but there are still plenty of darts sticking in and around the dartboard. (00:12:45)
Suggested correction: Rosie said she took them away AFTER they began throwing them at the dartboard. Therefore there would be some in and around the dartboard. And since Klinger and BJ were drunk, they likely wouldn't have thought to grab them from the board.
When we later see them in Col. Potter's office, they are quite capable of semi-coherent reasoning, so them not realizing they could grab more darts from the dartboard isn't really in sync with that later behoviour.
Doc ★