As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CPCP INSPECTION MAINTENANCE FOUND THE FORWARD CABIN FLOOR SUPPORT AT FRAME 20 HAS CORROSION THROUGH AFT END AT LAP JOINT WITH GUSSET. MAINTENANCE REMOVED AND REPLACED THE FLOOR SUPPORT IAW SRM. AIRCRAFT RETURNED TO SERVICE. (SW21200502486) (K)