As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CHECK-C MAINT, FOUND SURFACE CORROSION TO INTERGRANULAR CORROSION ON KEEL BEAM RT AND LT LOWER LEG, TOP AND BOTTOM OF I/B LEG FROM STA 933 THRU MAIN GEAR WHEEL WELL AREA. REMOVED CORROSION PER SRM 51-10-00 PG 1. TREATED WITH ALODINE AND PRIMED.