As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE A/C WAS OUT OF SERVICE FOR HVY CHECK, MAINTENANCE FOUND LEVEL 2 CORROSION AT RT I/B SEAT TRACK BEAM FR12-FR20. SEAT TRACK BEAM WAS REMOVED AND REPLACED IAW SRM 51-43-01 AND 51-41-01. AIRCRAFT REMAINS OUT OF SERVICE FOR HVY MAINTENANCE COMPLETION.