As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE IN HEAVY MAINTENANCE PERFORMING INSPECTIONS IT WAS NOTED THAT THE LOWER FLANGE OF SHEAR TIE AT B.S. 720, BL 0 IS CORRODED. CORROSION FOUND TO BE OUT OF LIMITS. REMOVED SHEAR TIE "L" ANGLE, FABRICATED NEW ANGLE. INSTALLED ANGLE, NO OTHER DEFECTS WERE NOTED. ACFT RETURNED TO SERVICE.