As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT WING SLAT TRACK NR 4 PINION TOOTH NR 1 (LWR) HAS EVIDENCE OF CORROSION WITH PREVIOUS REWORK REF 620530-14AD REV B LIAISON ENGINEERING WILL BE REQUIRED BEFORE FURTHER FLIGHT. C/W ERA 620530-14AD REV C SECTION VI AND PRI 620530-14AD REV 0 MATCHES ASSOCIATED AA 5742-01028 ADDED FOR AC 8313. (LP# 1335131)