Core Cowl Wear Strip
CF6-50 Core Cowl wear strips were notoriously bad for fretting and falling out. The problem was then, that the preload on the over-centre latches was reduced and the consequence of that was in extreme cases that the cowls undid themselves and as I saw on one sorry B747 , they came off - sheared at the pylon hinges. A mod came out, inserting a stainless steel screw/pin which effectively locked the two cowls together.
Now, the strips still got renewed and they were always meant to be made of Stainless Steel. The report shows that the Titanium strip that alegedly caused the crash, to have been attached with Cherry-Loc rivets. Had they been monel with stainless mandrels, I doubt accident would have happened. Stainless wear-strip, ally Cherries, strip on runway, tire bursts, Concorde in Hotel except for one thing....... Titanium burns with a fierce bright flame. Source of ignition??