As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY CHECK, RT FLOOR REINFORCEMENT ON FRAME 84 HAS SIGNS OF CORROSION. MX REMOVED AND MATCH DRILLED INSTALLED RT FLOOR REINFORCEMENT ON FRAME 84 IAW SRM 51-40-02, 51-41-01. INSTALLED AND REMOVED IAW SWPM 20-67-00. PN 190652887-001 FLOOR SUPPORT. ACFT REMAINS UNTIL HEAVY CHECK IS COMPLETED.