As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LH WING O/B FLAP TRACK 4, RIB 15-16 INTERNAL DOUBLER HAS CORROSI ON AROUND FASTENERS AND EVIDENCE OF DEBOND ON MAIN STRUCTURE. REMOVE ONLY LH O/B FLAP FOR OVERHAUL. REMOVED AND REPLACED LH WING O/B FLAP IAW AMM TASK 27-54-62 -000-001-A AND AMM TASK 27-54-62-400-001-A OPERATIONAL TEST SATI SFACTORY.