As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: CORRODED AREA FOUND ON FLOOR BEAM Y1162.5. LENGTH = 0.446 INCHES, WIDTH = 0.306 INCHES, DEPTH = 0.025 INCHES. REPLACED FLOOR BEAM Y1162.5 LOCATED FROM FR68 TO FR69 AT AFT GALLEY AREA PER SRM 51-72-11-911-001.