As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PIT - DURING Q-4/C-6 CHECK, FOUND LEVEL II CORROSION AT NR 1 SLAT TRACK CUT OUT OUTBOARD LEADING EDGE OF LEFT WING. CUT OUT CORRODED AREA AND INSTALLED DOUBLER 9 INCH BY 7.5 INCH PER SRM 57-06 FIG 4. CORROSION LEVEL 2, COROSION TASK NR C11-57300. (M)