As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MGB CHIP LIGHT ILLUMINATED IN CRUISE FLIGHT. REDUCED POWER. LIGHT EXTINGUISHED. TURNED AROUND AND RETURNED TO KGYR. LIGHT REMAINED EXTINGUISHED EXCEPT FOR ONE OR TWO VERY MOMENTARY FLICKERS. LANDED SAFELY AT KGYR. INSPECTED MGB CHIP DETECTOR IAW AMM 05-50-00, 6-1 AND PERFORMED FAULT ISOLATION CHECK IAW AMM 60-00-00, 1-1. NO DEFECTS NOTED. GROUND RUN PERFORMED WITH NO DEFECTS NOTED.