What was found
DURING THE REPAIR OF ROTOR HEAD PN 414R2002, SN A5-1460, BOLT PN 114R2201-2, SN CH-3997, SHEARED AT THE THREADED PORTION OF THE BOLT WHEN FORCE WAS APPLIED TO THE BOLT HEAD IN A LOOSENING DIRECTION. BOLT PN 114R2201-2, SN SB-138, THAT WAS REMOVED DURING THE SAME REPAIR WAS INSPECTED BY NDT AND FOUND TO BE CRACKED AT THE THREADED PORTION OF THE BOLT.