Visible crew/equipment: When Don comes into the garage to apply for the job, the T-mark can be seen on the floor by Fonzie's feet.
Visible crew/equipment: When Al, Fonzie, and Howard use "Gulper" in the diner's kitchen, it starts to throw salad all over. You can see the same hand twice in a short period throwing salad from the door window. (00:13:40)
The Ballad of Joanie and Chachi - S11-E2
Visible crew/equipment: After Chachi walks out of the college classroom, when Joanie takes a seat and starts crying the boom mic dips into view at the top of the screen, in the wideshot.
Visible crew/equipment: When Fonzie and Chachi are wearing their tuxes, Chachi nervously picks up the telephone for no reason, and just as he walks around the table we can see set lighting at the top of the screen, over the window.
Answer: He was written off the series, never to be mentioned again as if he never existed. As a matter of fact, according to the final episode, he never did exist.
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