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 A HEAVY CHECK*** IN PASSENGER CABIN, CORROSION LOCATED ON SEAT TRACK REPAIR DOUBLER AT LBL 11" AND FR 19. SEAT TRACK REPLACED SEE AAR TR NRC# 4000696-1000-0136. A/C REMAINS OUT OF SERVICE FOR HEAVY CHECK COMPLETION