What was the first Disney movie not pg rated?

The first Disney movie to receive a rating other than G was "The Black Hole" (1979), which received a PG rating for its "intense science fiction action and some frightening scenes."

While there were some Disney films that were considered "scary" for their time, like "Fantasia" and "The Sword in the Stone," these were rated G by the MPAA. "The Black Hole" marked a shift in Disney's content, beginning to produce movies with themes and elements aimed at older audiences.