As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN)ON THE 100 HOUR INSPECTION, BOTH MAGNETOS HAD BEEN CHECKED FOR CONDITION AND TIMING AS CALLED FOR IN THE CESSNA INSPECTION PROGRAM AND A POST INSPECTION RUN-UP DONE WITH ALL ENGINE PARAMETERS FOUND NORMAL. ON THE FIRST FLIGHT AFTER INSPECTION, A POWER LOSS OCCURRED AT 900 FEET IN THE CLIMB WHICH NECESSITATED AN EMERGENCY LANDING. MAGNETO POINTS CAM FOLLOWER EXCESSIVELY WORN.