As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORT: HYD SYS LEAK DURING CRUISE AT FL 390 AFTER 1 HR AND 30 MIN FLIGHT TIME. IN RT ENGINE: ON DUMPER HYD PULSATION (GREEN SYSTEM) THE SEAL WAS FOUND BROKEN PROCEDURES IAW TSM 29-11-00-810-820 WERE PERFORMED WITH ELEC PUMPS. IAW AMM 29-11-54-400-802 THE GREEN ENG MOUNTED HYD PULSATION DUMPER ON RT ENG WAS REPLACED ENGINE RUN UP IAW 71-00-00-860-810 (AMM) IS OK.