What was found
DURING 'D' CHECK, MAINTENANCE FOUND CORROSION ON THE LOWER CHORD AND STRAP AT STATION 351.2 BETWEEN STRINGERS 26L AND 25L. MAINTENANCE TRIMMED OUT FAIL SAFE CHORD FOR ACCESS, BLENDED OUT CORROSION, FREEZE PLUG DISCREPANT HOLES. FABRICATED NESTING REPAIR ANGLES, FILLER, AND TAPERED SHIMS AND INSTALL REPAIR PARTS. WORK IAW UPS EO B727-5310-6860A.