What was found
CAPTAIN`S PITOT FAULT LIGHT ILLUMINATED. INITIAL INSPECTION FOUND CIRCUIT BREAKER OPEN. AIR RETURN WHILE PERFORMING VISUAL INSPECTION OF THE HEATERS, CAPT PITOT CIRCUIT BREAKER C1 FOUND A CRACKED AROUND THE NEGTITIVE TERMINAL. WHEN SLIGHTLY MOVING THE NEGITIVE TERMINAL CB WOULD TRIP. REPLACED HEATERS ON CAPT PITOT CB IAW SWPM 20-30-00, AND WDM 30-31-11. MOVEMENT OF THE CB NO LONGER TRIPS THE CB. PERFORMED AUTO AIR DATA SENSOR HEATING, OPS TESTED IAW AMM 30-31-00-750-801. CHECKED LIGHTS ON WINDOW AND PITOT HEAT MODULE DURING ENGINE RUN ON BOTH ENGINES FOR 5 MIN. ALL PITOT LIGHTS EXTINGUISHED DURING ENGINE START & RUN, ALL LIGHTS ON PITOT HEAT MODULE CAME BACK ON AFTER ENGINES STOPPED. OPS TESTED GOOD, NO FAULTS NOTED.