What was found
DURING SECOND ENGINE START OF THE DAY, THE RT PROP STARTED VIBRATING. START WAS ABORTED AT APPROX 40 PERCENT N1. ON INSPECTION OF PROPELLER, FOUND 3 BLADES FEATHERED AND IN LOW PITCH. NR 1 BLADE COULD BE REPOSITIONED BY HAND. REMOVED PROPELLER AND SENT FOR REPAIR. FOUND LINK HARDWARE LOOSE ON BLADE, REPAIRED BLADE LINK, REPLACED ALL 4 LINK SCREWS AND NUTS, AND CHECKED BLADE ANGLES. PROP REINSTALLED ON ACFT.