As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOST GREEN HYD AIR AT FLT LEVEL 390 IAW QRH QTY WAS MONITORED AFTER 1 MIN GREEN HYD QTY FLUCTUATED & PEGGED AT MAX. IAW QRH GREEN HYD PUMPS 1 & 2 WERE SECURED, IAW QRH LANDED. REPLACED DEPRESSURIZATION RELEIF VALVE IAW AMM 29-11-27-04. ALSO REPLACED GREEN RESERVOIR HEAD PRESSURE CHECK VALVE. SERVICED GREEN HYDRAULIC SYSTEM HEAD PRESSURE IAW AMM 29-14-00-03. GREEN RESERVOIR MAINTAINED PRESSURE AND HYDRAULIC QTY IN THE MIDDLE OF TOP HAT. ACFT RELEASED FOR SERVICE.