What was found
ENG ADPT HEAT 1 CAUTION LIGHT ILLUMINATED IN FLIGHT DURING ICING CONDITIONS. REMOVED FROM SERVICE. FOUND CB "INTK LIP HTR ENG 1" POPPED. INSPECTED NR 1 ENGINE INTAKE HEATER CONNECTOR, NO DEFECTS NOTED. CLEANED CONNECTOR AND RE-INSTALLED. CLOSED CB IAW GPM 9.2.2. AND PERFORMED OPS TEST OF ENGINE AIR INTAKE ANTI-ICE IAW AMM 30-21-00-710-801. OPS TEST GOOD. CB REMAINS CLOSED. ALSO, NO FAULTS IN CDS. NO FURTHER DEFECTS AT THIS TIME. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.