As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING REPLACEMENT OF SEAT RAILS, THE FLOORBOARD WAS FOUND CRACKED AT THE AFT END OF THE RT SEAT INBOARD SEAT RAIL. THE AREA AFT OF THE LT SEAT INBOARD SEAT RAIL SHOWS SIGNS OF CHAFING. THE NEW AND OLD RAILS ARE NOT ROUNDED OFF AND HAVE SHARP EDGES WHICH MAY HAVE CONTRIBUTED TO THIS CRACKING PROBLEM. THIS IS THE SECOND OCCURRENCE FOR THIS OPERATOR. SUBMITTER RECOMMENDS DRESSING RAILS WITH A FILE.