General Mitchell: Now wait a minute! This is a press conference! The last thing I want to do is answer a lot of questions.
Pierce: Listen, Frank. We're all gonna make nice for Captain Hildebrandt today, but don't push us.
Burns: Well, a shave wouldn't be a bad start. You both look more like bums than doctors.
Trapper: Actually, I was, uh, I was thinking of becoming a bum doctor. But the proctology class was full!
Burns: HA! HA! HA!
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 ★