As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER DEPARTURE FROM BQN THE AIRCRAFT EXPERIENCED NR 1 ENGINE TORQUE DROP TO ZERO AFTER TWO STRONG SHUDDERS. THE PILOT SHUT THE ENGINE DOWN AND DECLARED AN EMERGENCY. THEN DIVERTED TO SJU, LANDED WITHOUT INCIDENT. AFTER TROUBLESHOOTING MAINTENANCE DETERMINED THE ENGINE WOULD NEED TO BE REPLACED DUE TO METAL IN THE OIL FILTER.