What was found
WHILE IN C-CHECK, MAINTENANCE FOUND CORROSION ON THE LEFT MID-CHORD AT STATION 294.5 - 312, LBL 15 AND WL 170. MAINTENANCE REMOVED CORROSION BEYOND LIMITS, REMOVED AND REPLACED THE CHORD, FINAL INSTALLATION PER SRM 51-30-2, 53-10-1 AND 56-40-00.