DuckTales #5 (10 Copy Cover)
Uncle Scrooge seeks a fountain of youth, but when he discovers it isn't quite what he bargained for, it's up to Donald, Huey, Dewey and Louie to turn him back into his old self! And when Launchpad (Shockingly!) makes a mistake while flying, the next candidate to be Scrooge's pilot is... Dewey?!