What was found
UPON INSPECTION AND MAINTENANCE OF MAIN ROTOR CONTROLS, INSPECTION REVEALED SHEARED BOLT (PN 20-057-10-45D) AT BOLT HEAD AT THE M/R SWASH PLATE COLLECTIVE LEVER IDLER LINK. (ATTACH BOLTS) MFG A- NR 28 BOLT, MFG U-NR 28 BOLT. THIS CONDITION HAS BEEN REPORTED TO MFG FOR INVESTIGATION ADN ANALYSIS OF CAUSE. ALL REMAINING COMPANY HELICOPTERS HAVE BEEN INSPECTED FOR LIKE CONDITION AND FOUND AIRWORTHY. (K)