Give the bloke in the aircraft a break.
He is single engine, single crew and something doesn't look right. Yes after 8 years experence driving turbo props a torque bridge dropping out isn't worthy of a mention to ATC. But if you havent seen it before, you don't have a second engine that looks right etc etc.
Actually bugger it single engine I would be screaming mayday like a girl and if anyone had an issue with that on the ground they could go
themselves