As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE A/C WAS IN FOR HEAVY CHECK, FOUND CORROSION ON FWD FUSELAGE FLOOR STRUCTURE RT WINGBOARD SEAT TRACK BEAM BETWEEN FR 12 AND 13. AAR MX REPAIRED SEAT TRACK PN BEAM BETWEEN FR 12 AND 13, IAW SRM 53-10-10 REPAIR 01. FOR DETAILS OF WORK PERFORMED SEE AAR NRC 4500788-2000-0092. A/C REMAINS IN YQG FOR COMPLETION.