As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING BC4 CHECK DISCOVERED LEVEL 2 GALVANIC CORROSION LOCATED ON RAIL ASSEMBLY AT FR 16 AND Y503.2. MAINTENANCE REMOVED CORROSION AND FOUND TO BE OUT OF LIMITS IAW SRM 53-11-14 FIG 103. REMOVED AND INSTALLED NEW RAIL ASSEMBLY AT FR 16 AND Y503.2 IAW SRM 51-42-11.