As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
JFK - INFLIGHT BOS-MIA. CREW REPORTED SEAT ROW 12DEF CAME OUT OF THE TRACK DURING TAKEOFF. EMERGENCY DECLARED FLIGHT DIVERTED JFK LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. ACCOMPLISHED COMPLETE INSPECTION OF SEATS ONBOARD AND FOUND NUMEROUS SEATS NOT LOCKED DOWN PROPERLY. SECURED AND TIGHTENED ALL AFFECTED SEATS. SYSTEM GROUND CHECK NORMAL OPERATION.