What was found
PROP DE-ICE CAUTION LIGHT ILLUMINATED MOMENTAIRLY INITIALLY WITH PROP DE-ICE SECTION TO OFF. PRIOR TO ENTERING CLOUDS, TURNED PROP DE-ICE ON AN PROP DE-ICE CAUTION ILLUMIINATED CYCLES ON AND OFF APPROXIMATELY 4 TIMES. DIVERTED, LANDING UNEVENTFUL. INTERROGATED CDS FOUND NO FAULT, RAN ENGINES, PERFORMED FUNCTIONAL TEST OF PROPELLER DE-ICING SYSTEM MULTIPLE TIMES AMM TASK 30-61-00-720-801. CHECKED CDS NO FAULTS FOUND IN ICE PROTECTION AND NR 1 & NR 2 TMCU NO CAUTION LIGHTS ILLUMINATED.