What was found
THIS PART WAS INSPECTED EARLY AT CONVENIENCE OF OPERATOR, TO MAINTAIN ACFT AVAILABILITY. DURING C/W ALLIED SIGNAL AEROSPACE (FORMERLY TEXTRON LYCOMING) SB LT-101-72-50-0153 AND BELL ASB 222-93-63, USING DIAL INDICATOR INSPECTION METHOD TO DETECT BLADE SHIFT, FOUND ONE BLADE SHIFTED .014 INCH (MAX IS .010 INCH FOR ANY ONE BLADE). THE PT ROTOR HAD A TOTAL OF 46.9 HRS/192 CYCLES SINCE INSTALLATION. PER ALLIED SIGNAL, BLADE SHIFT IS CAUSED BY BLADE ATTACH RIVET WORKING LOOSE. SUBMITTER STATED MANUFACTURER NEEDS TO COME UP WITH A PERMANENT FIX TO THE PROBLEM. CYCLES, 192.