Scotty writes

<<I have some video of a MT prop (pretty darn sure) failing in spectacular fashion on Dave Morss at the Reno Air Races in a Lancair IV.... Maybe they meant none had failed in normal use? >>

Don't be so darn sure. If it is the incident I am thinking about (early '90s in the prototype) then it was an early composite prop, NOT and MT.

Regards
Brent Regan