What was found
DURING ROUTINE C CHECK INSPECTION, WEAR WAS DETECTED ON THE NUMBER FOUR PYLON UPPER INBOARD PLANK SIX INCHES FORWARD OF STATION YUS 297. REPAIR ACCOMPLISHED BLENDING, POLISH THE AFFECTED AREA IN ACCORDANCE WITH FAA DER APPROVED DRAWING COO-SJO-98-0351, FAX ACTION NUMBER 369661 AND ENGINEERING ORDER 54-DC8-861.