What was found
DURING SCHEDULE INSPECTION, CORROSION WAS FOUND ON THE REAR SPAR ATTACHMENT HOLES OF NR 5 TRAILING EDGE FLAP TRACK. OVERSIZED THE AFFECTED ATTACHMENT HOLES. MAGNETIC PARTICLE INSPECTED THE REWORKED AREA TO ENSURE CRACK AND DEFECT FREE CONDITION. THE REPAIRED HOLES WERE REPAIRED USING 17-4PH SLEEVE. DETAIL VISUAL INSPECT THE AFFECTED EXPOSED FLANGE EDGES FOR CRACKS FOR CORROSION EVERY C-CHECK INTERVAL NOT TO EXCEED 18 MONTHS. EO 4757A168 ISSUED TO ACCOMPLISH THE INSPECTION. (M)