What was found
DURING 100-HOUR INSPECTION, BRACKET WAS FOUND CRACKED AT FORWARD AND AFT MOUNT FLANGES AND FORWARD LOWER MOUNT FLANGE. CRACKS WERE ALSO FOUND RADIATING OUT FROM FORWARD FLANGE RIVET HOLES. CESSNA'S REPLACEMENT PART, 0513063-3, IS HEAVIER GAUGE. MATERIAL WITH MORE FLANGE SPACE FOR RIVETING. SUBMITTER RECOMMENDS CLOSER ATTENTION DURING INSPECTIONS WITH REPLACMENT AT FIRST SIGN OF FATIGUE. BRACKET IS UNDER CREW FLOOR BELOW FUEL SELECTOR KNOB.