As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT HAND MAGNETO OFF LIGHT ILLUMINATED ON RIGHT HAND MVP-50P ENGINE INSTRUMENT DISPLAY. PILOT RETURNED TO AIRPORT, LANDED NORMALLY. MAINTENANCE DISCOVERED BROKEN WIRE AT RPM SENSOR AT RIGHT HAND ENGINE RIGHT HAND MAGNETO. (MAGNETO STILL OPERATED NORMALLY).