What was found
DURING HEAVY MAINTENANCE, CORROSION WAS DISCOVERED ON RT AFT SHEAR WEB SUPPORT ANGLE, AT FR 69 +19.00", STR 23R. HAS UPPER AND LOWER SURFACE CORROSION; AFTER BLEND-OUT, DAMAGE WAS FOUND TO BE OUT OF LIMITS PER SRM 51-74-00. SUPPORT FRAME REMOVED AND REPLACED PER SRM 51-72-11. REF LCQ NR 24387.