What was found
DURING SCHEDULED MAINTENANCE, FOUND CORROSION ON LEFT WING TOP SKIN UPPER SURFACE AT APPROXIMATELY WBL 143, JUST FORWARD OF STRINGER 30. THE CORROSION WAS REMOVED BY BLENDING. HFEC INSPECTED THE SKIN SURFACE TO ENSURE DAMAGE AND DEFECT FREE. FLAP PEEN THE BLENDED AREA AND PROTECTIVE FINISH APPLIED. CORROSION INHIBITING COMPOUNDS WERE APPLIED TO THE REWORKED AREA. (M)