What was found
ARRIVED AT HANGAR. DISCREPANCY IN LOGBOOK STATES "FLICKERING YELLOW GOV LIGHT". TURNED ON AIRCRAFT POWER, NORMAL OPERATION WAS OBSERVED. GROUND RUN AIRCRAFT, NORMAL OPERATION WAS OBSERVED. COMPLETED AIRCRAFT MAINTENANCE CHECK FLIGHT, NORMAL OPERATION WAS OBSERVED. SUSPECT EXTREME HOT AND HUMID CONDITIONS, HEAT INDEX WAS 110 F, AIRCRAFT WAS PARKED ALL DAY FULLY EXPOSED TO THE SUN. RETURNED THE AIRCRAFT BACK TO SERVICE.