What was found
(CAN) DURING ELEVATOR CONTROL MOVEMENT, THE CLEVIS PIN AN21-10, ATTACHED TO THE ARM ASSEMBLY, IS CONTACTING THE SUPPORT ASSEMBLY WEARING A .025 DEEP GROOVE IN THE SUPPORT ASSEMBLY. THIS IS APPROX 50% OF THE MATERIAL THICKNESS. THIS GROOVE EXTENDS DIRECTLY THROUGH A HOLE IN THE SUPPORT ASSEMBLY CREATING THE POTENTIAL FOR THE CLEVIS TO JAM IN THE HOLE, THEREBY JAMMING THE ELEVATORS.