As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING LANDING APPROACH, BACK OF PILOT'S SEAT BROKE LOOSE. LANDING WAS MADE WITHOUT INCIDENT. SEAT BACK BRACKET ON RIGHT SIDE OF PILOT'S SEAT (P/N 5102328-26) HAD BROKEN CLEAN THROUGH. EXAMINATION INDICATED PART HAD PREVIOUSLY BEEN CRACKED AND FINALLY PARTED. SUBMITTER RECOMMENDED SEAT BRACKETS BE PERIODICALLY INSPECTION.