As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THROTTLE CABLE PLASTIC OUTER COVER MADE OF PLASTIC BECAME BRITTLE FROM AGE AND HEAT AND FAILED. THE WHOLE ASSEMBLY WAS MOVING WITH POWER CHANGES. SUBMITTER STATED THESE ORIGINAL CESSNA SUPPLIED CABLES ARE ALL REACHING THEIR SERVICE LIFE ON PLASTIC DETERIORATION. SUBMITTER HAS NOTICED THIS ON MODEL 172 AND MODEL 150 AIRCRAFT.