I remember reading about this some years ago. There was a picture of
the failed UK crank front journal bearing ID taken thru the front plug
hole. It was solid crud where the crud ID appeared to be about 1/4
inch diameter. That engine must have been filthy inside & operated in
some very abusive and corrosive conditions. It is interesting that it
had been overhauled once & was near TBO again. Who did the magnaflux
at the first overhaul?