I think the Old Warden aeroplane lost a chunk of cowling when something vital flew off the rotary…
What Rolls-Royce calls an ‘uncontained failure’ these days 😉
I also seem to recollect the Great War Team’s Warner-engined Pup replica having a similar experience.
It was the Great War Teams Sopwith Triplane that Lost its cowl near Rendcomb in 2008. The cowl didnt come right off, it came loose and started to eat its way through the prop!!