As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LH SLAT TRACK #4 UPPER SURFACE HAS CORROSION AT AFT ROLLER. EVIDENCE OF PREVIOUS REWORK IS NOT PRESENT. REF AA 5742-01028- 02A. LIAISON ENGINEERING SUPPORT WILL BE REQUIRED BEFORE FURTHER FLIGHT. REPAIRED LH SLAT TRACK #4 UPPER PER ERA 607543-14AD REV B & PRI REV 0 MATCH. (LP# 0118873)