As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ANNUAL INSPECTION, FOUND PILOT'S OUTBOARD SEAT RAIL HAD SEVERE EXFOLIATION CORROSION SEVEN INCHES FORWARD OF SPAR CARRY-THROUGH STRUCTURE. UPON PROBING CORROSION WITH A PICK, THE RAIL DISINTEGRATED. SUBMITTER STATED THERE WAS EVIDENCE OF WATER PREVIOUSLY STANDING IN CABIN AREA.