As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GOT EICAS MSG RT HYD QTY ABOUT ONE HOUR INTO THE FLIGHT. RAN QRH PROCEDURE, HYD QTY, THEN ON DESCENT GOT EICAS MSG RT HYD PRESS LOW ALONG WITH BOTH PRESS LIGHTS ON ENG PUMP & ELEC PUMP. RAN QRH PROCEDURE HYD SYS PRESS, RT ONLY. DURING INSPECTION FOUND PRESS SWITCH ON FILTER MODULE LEAKING. R & R PRESS SWITCH IAW AMM 29-11-17. OPERATIONS CHECKED GOOD. LEAK CHECK PERFORMED, NO LEAKS NOTED.