One of the all-time great TV dads, Tom Bosley passed away today at the age of 83.

Bosley had been battling lung cancer, but it’s said that the actor passed away due to heart failure at a hospital in Palm Springs.

The actor did many things over his career, but he is and always will be remembered as Howard Cunningham on the hit ’70s TV show, Happy Days. The show ran for ten years from 1974 to 1984 and spanned 255 episodes, all of which featured Bosley. Only his TV wife Marion Ross and the Fonz, Henry Winkler, appeared in every episode.