As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION FOUND IN BUSHING BORES OF INBD FLAP TRACK ASSY NR 4 BY SIAGE WORKSHOP DURING REPAIR (SHOP VISIT) P/N 65B17064-13, S/N 0039. REPAIR CARRIED OUT IAW BOEING REPAIR NR 1-171550575 BY W/SHOP. REFER TO SWJC NR MS 130382145 AND SWJC NR E-W3LG000130382145 FOR REPAIR CERTIFICATION.