As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY CHECK, MAINTENANCE FOUND LEVEL 2 CORROSION ON THE LT INBD SEAT RAIL BETWEEN STATIONS X102.50 TO X228.50. MAINTENANCE R & R THE LT INBD SEAT RAIL BETWEEN STATIONS X102.50 TO X228.50 IAW SRM 51-40-15, 51-42-05 & 51-40-07. ACFT IS STILL CURRENTLY OUT OF SERVICE FOR HEAVY CHECK COMPLETION.