[Gay State Conservative]

You certainly have more credibility than do I on this subject.

I recall having seen a documentary on the DC-10 crash in Iowa sometime in the 80s. I recall someone (The NTSB?) having made a public request in the area for the engine parts that fell off during the incident. I think a farmer found the pivotal part in his corn field.

IIRC the final "diagnosis" was that the fan blades had been manufactured from metals (titanium?) that contained some kind of chemical impurity.

Of course you'd surely know more about that incident (and others) than I do.

[null and void]

IIRC, there were Ti₂O₃ and TiO₂ inclusions in the titanium. Since then they've required vacuum melting of titanium for jet engine blades.