As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SJU INFLIGHT/T0661/17 AIRCRAFT RETURNED TO STATION DUE TO LOSS OF GREEN SYSTEM HYDRAULIC FLUID. FOUND NR 1 ENGINE GREEN SYSTEM HYDRAULIC PUMP SOLENOID DETACHED FROM THE PUMP CAUSING THE FLUID LOSS. REPLACED NR 1 GREEN ENGINE DRIVEN PUMP AND SOLENOID CONNECTOR PARTS. ALSO REPLACED NR 2 ENGINE DRIVEN PUMP DUE TO RUNNING IT DRY. SYSTEM GROUND CHECKED NORMAL OPERATION.