What was found
CYQX - FLT DX3 - ON CLIMB-OUT AT INITIAL POWER REDUCTION, NR 3 FIRE WARNING ILLUMINATED, ENGINE PARAMETERS APPEARED NORMAL. SHUTDOWN ENGINE IAW DC-8 QRH. CLEANED LOWER FIRE LOOP AS PRECAUTIONARY. INSPECTED ENGINE FOR LEAKS, NO DEFECTS NOTED. PERFORMED HIGH POWER RUN PER EWW ENGINE RUN UP BOOK, NO DEFECTS NOTED. (M)