On Jul 27, 9:14*am, Stealth Pilot
wrote:

yes. carb heat came out way too far in the hand. the butterfly
actuator arm had fatigue failed of the end of the pivot shaft.
(poor design that had lasted 23 years in service)


If something lasted 23 years of continuous service, poor design it
certainly can't be, what?


years of successful action does not predict the
onset of a fatigue problem.
Stealth Pilot


Yep, that's the nature of the fatigue beast. I've known it in my own
industry (construction) for yonks.

Ramapriya