Visible crew/equipment: During the fight on the mountain, as Caine defends himself from being struck with the shackles, you can see what looks like John Saxon leaning against a tree watching the (I presume) the stunt double and the fight. (00:45:20)
Kung Fu (1972)
1 visible crew/equipment mistake in King of the Mountain
Starring: David Carradine, Keye Luke, Philip Ahn, Radames Pera
The Chalice - S2-E3
Factual error: After the opening credits, Caine is walking along the beach. On the beach behind him, you can see a modern long-board surfboard lying in the sand which gets caught up in a wave.
Trivia: "Kung Fu" was not canceled due to poor ratings, as it performed solidly during its run. It was canceled due to the physical stress and abuse on David Carradine's body, and it was wearing him out.