What was found
MX DISCOVERED CHAFING DAMAGE ON THE FOLLOWING PARTS DURING A SCHEDULED/ REFURB MX EVENT( 6731046-7 UPPER HINGE ASSY, 6731040-25 LOWER HINGE ASSEMBLY, AND THE 6733126-2 SPAR FOR THE 6733120-1 UPPER RUDDER). DAMAGE TO THE 6733126-2 SPAR WAS APPROXIMATELY 0.005 IN. DEEP ON THE UPPER HINGE LOWER LUG, AND 0.010 IN. DEEP ON THE LOWER HINGE UPPER LUG. THE CAUSE OF THE DAMAGE WAS IDENTIFIED AS APPROXIMATELY 0.063 IN. OF MISMATCH BETWEEN SPACING OF THE VERTICAL FIN HINGES AND THE LUGS ON THE RUDDER SPAR WHICH CAUSED A PRELOAD AND CHAFING CONDITION. MX REPLACED ALL REQUIRED ATTACH HDWR 2) UPPER RUDDER (A) UPPER AND LOWER HINGES (ATTACH PTS ON UPPER RUDDER) WERE REPAIRED AND NDT WAS C/W IAW STRUCTURES. REPAIR DEFINITIO