As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LH WING #4 LEADING EDGE SLAT WELL LOWER SUPPORT ASSEMBLY VERTICAL FLANGE IS CORRODED AT TAI TELESCOPING DUCT BEARING TAB FSS 313. / REPAIRED LH WING #4 LEASING EDGE SLAT WELL LOWER SUPPORT ASSEMBLY VERTICAL FLANGES (FSS 313) IAW AAR EA# 190653 REV IR AND SWA EA 1-757-16493 REV IR. (NO FURTHER ACTION REQUIRED).