What was found
RECEIVED PROPELLER FOR OVERHAUL. DURING PREFUNCTION TEST FOUND BLADE NR 1 WAS NOT LINKED TO THE PITCH CHANGE ROD. AFTER DISASSEMBLY OF PROPELLER FOUND NR 1 BLADE ACTUATING PIN PN B5072-1 DISCONNECTED FROM BLADE. ACTUATING PIN ATTACHMENT SCREWS WERE SAFETIED AND HAD ANTISABOTAGE ON THE SCREW HEADS. THE THREADS HAD BEEN PULLED OUT OF THE BLADE. THERE WAS NO OBVIOUS SIGNS OF SUDDEN STOPPAGE OR A STRIKE. ALL BLADES SHOWED SIMILAR EROSION FROM ROCK DAMAGE. BLADE TRACK WAS .0625 INCH PLUS OR MINUS AND DIAMETER WAS 106 INCHES.IAW THE RECORD, THIS WAS THE FIRST OVERHAUL EVENT. MANUFACTURE HAS REQUESTED BLADE, ACTUATING PIN AND LINK BE RETURNED TO THEM FOR EVALUATION.