As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LH SLAT TRACK #4 PINION TEETH (1EA) HAS EVIDENCE OF CORROSION WITH NO PREVIOUS REWORK REF 5742-1028-02A. LIAISON ENGINEERING SUPPORT WILL BE REQUIRED BEFORE FURTHER FLIGHT C/W ER/A 620609-14AD REV A AND PRI 620609-14AD REV 0 MATCHES. (LP# 0886451)