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 BEAM ASSEMBLY AT FR 68 AND Y-765. MAINTENANCE REMOVED CORROSION AND FOUND TO BE OUT OF LIMITS IAW SRM 53-00-14 FIG 102. REMOVED AND INSTALLED NEW BEAM ASSEMBLY FROM FR 66+5 INCHES TO FR 70 AND Y-765 SRM 51-72-11.