Tell It to the Marines - S9-E8
Continuity mistake: The water Klinger accidentally spits on Potter goes from a number of separate spots to one big spot in a couple of seconds.
Tell It to the Marines - S9-E8
Continuity mistake: In the mess tent, after Hawkeye and BJ read about the blood donations, Hawkeye goes to fold and put the paper down. When the camera cuts to a wide shot, he's folding and putting the paper down again.
Answer: The C-42 was a military variant of the Douglas DC-2. Very few C-42's were built, so it's questionable that Potter would specifically have seen that particular model, but, given his military background, it's not entirely unreasonable that he might use the military designation even when the aircraft in question is actually a civilian DC-2.
Tailkinker ★