Avery had recently undergone open heart surgery and died from complications from the procedure.
Fresh Prince co-star Alfonso Ribeiro confirmed the death on Twitter:
I'm deeply saddened to say that James Avery has passed away. He was a second father to me. I will miss him greatly. pic.twitter.com/UrW0EeBFbO
— Alfonso Ribeiro (@alfonso_ribeiro) January 1, 2014
RIP, Uncle Phil.
[Image via Wenn]