When did the Black Sheep Squadron show air?

There's no known show called "Black Sheep Squadron." Perhaps you're thinking of:

* "Black Sheep Squadron" (1976-1978): This was a popular TV series about a group of World War II fighter pilots known as the "Black Sheep Squadron."

* "The Black Sheep" (1942): This was a movie starring John Wayne as a fighter pilot during World War II, though it wasn't actually based on the real Black Sheep Squadron.

Could you please clarify which show you're referring to?