If a plane is flown twice a week for thirty years, there could be
30 X 52 X 2 X 5 cycles on the throttle - and that's a highball estimate.
16000 cycles should not fatigue a wire, should it?

We replaced our prop adjustment cable in the Pathfinder this year. It was
probably the original cable from 1974. It was getting stiffer and stiffer
over time.

Upon removal it was obvious that a few strands of the sheathing had broken,
and were scraping on the cable every time we moved the blue lever. How
this happened is a mystery, but after 25 years we figured it didn't owe us
anything. (Although it is a real SOB to change...)

The OP did a great job getting the plane down safely.
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
Ercoupe N94856
www.AlexisParkInn.com
"Your Aviation Destination"