As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SJU INFLIGHT T809/09APR - CREW REPORTED NUMBER TWO ENGINE FIRE LOOP ONE STATUS MESSAGE DURING CLIMB. RETURNED TO SJU AND LANDED WITHOUT INCIDENT. NO FIRE. REPLACED NUMBER TWO ENGINE FIRE LOOP ONE DETECTOR CARD M683. SYSTEM GROUND CHECKED NORMAL OPERATION.