What was found
DURING C-CK IN ILN (WILMINGTON, OH) AMES MAINTENANCE FOUND THE L WR CHORD CORRODED LOCATED AT STA 1809.5 BULKHEAD FRAME INSTALLATION(P/N-148T1150-1). CORROSION WAS COMMON TO THE VERTICAL & HORIZONTAL FLANGE AS SHOWN IN FIGURES. DAMAGE WAS RE MOVED BY BLENDING AND IT WAS FOUND TO BE BEYOND THE ALLOWABLE LI MITS PER B767-300 SRM 53-80-08,AD-3, DETAIL-II AN ULTRSONIC THIC KNESS (UT) INSP OF THE REWORKED AREA WAS PERFORMED PER B767. WERE ACCOMPLISHED WITH NO REPORTED DEFECTS.