As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
JFK INFLIGHT T1853/26APR LGA TO MIA LANDED JFK DUE TO LOSS OF LEFT HYDRAULIC SYSTEM FAILED. PERFORMED MANUAL GEAR AND FLAP PROCEDURES. LANDED JFK OVERWEIGHT WITHOUT INCIDENT. FOUND HYDRAULIC LINE TO LEFT GEAR UNLOCK ACTUATOR FAILED. REPLACED HOSE ASSEMBLY FOR LEFT GEAR UNLOCK ACTUATOR. SYSTEM GROUND CHECKED NORMAL OPERATION.