What was found
DURING PREFLIGHT THE PILOT FOUND EXCESSIVE MOVEMENT IN THE LT OB ELEVATOR HINGE PIN. MAINTENANCE REMOVED BOTH ELEVATORS AND THE RUDDER AND FOUND LONGITUDINAL SCORING ON ALL THE HINGE BOLTS (AN23-40) APPARENTLY CAUSED DURING MFG OF THE AIRCRAFT. THE LONGITUDINAL SCORING WAS CAUSED BY THE CENTER NEEDLE BEARING (PN B34PS) ON THE ELEVATOR AND RUDDER. CIRCUMFERENTIAL SCORING WAS ALSO PRESENT ON ALL BOLTS APPARENTLY CAUSED BY IMPROPERLY ALIGNED AND REAMED BUSHINGS (PN 1-3737-1) ON THE HORIZONTAL AND VERTICAL STABILIZER HINGES. THE MFG WAS CONTACTED CONCERNING THE PROBLEM. THE SAME CONDITION IS PRESENT IN SN 943-2004.