What was found
AIRCRAFT 6809, DURING H CHECK MAINTENANCE VISIT AT MX (QRO), WHILE ACCOMPLISHING INSPECTIONS ON THE LH WING, FORWARD DRAG FITTINGS PER EM 5720-01100-04A & EM 5720-01100-05A DAMAGE INDICATION WAS FOUND ON WING SKIN AND FITTING LAYER ON HOLES #2-#5, #7-#9, #12, #18, AT FITTING LAYER ON HOLE #10 & #11 AND AT WING SKIN ON HOLE #1. AFTER THE 1ST OVZ DAMAGE REMAINS ON HOLES #2-#5, #9, #13 & #14. CORRECTIVE ACTION: CAREFULLY REAM DISCREPANT HOLE(S) CONCENTRICALLY THROUGH THE STACK UP TO 2ND OVERSIZE (0.5932-0.5942-INCH DIAMETER). INSPECT THE HOLE LOCATION USING HFEC OPEN HOLE INSPECTION TECHNIQUES PER 757 NDTM, PART 6, 51-00-16, USING AN 0.020 INCH NOTCH SENSITIVITY. FABRICATE SOLID SHIMS, AND INSTALL REPAIR PARTS PER ER/A 616812-14AD. (LP 0313695)