What was found
ENGINE ADPT 1 CAUTION LIGHT FLICKERING ON AND OFF IN CONJUNCTION WITH HEATER LIGHT ON ICE PROTECTION PANEL LT SIDE. RETURNED TO FIELD. LANDED UNEVENTFULLY. PERFORMED GIVE OF NR 1 ENGINE INTAKE HEATER, FOUND LOOSE CONNECTOR. DISCONNECTED CONNECTOR, CLEANED CONNECTOR AND HEATER RECEPTACLE, TIGHTENED BACK SHELL. RECONNECTED & APPLIED HEAT SHRINK TO CONNECTOR. COMPLIED WITH FIM TASK 30-20-00-810-804, STEPS 1-3 A, 3 A. OPS TESTED GOOD. CAUTION LIGHT DID NOT RETURN & NO FAULTS IN CDS. RETURNED TO SERVICE.