As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HYD QTY DECREASED. QTY STABLE WITH EDP DEPRESSURIZED & ACMP OFF. POS 2 (01=L,02=R). CREW COMMENTS: WITH R PUMPS ON R HYD QTY SYS DECREASED FAST R HYD QTY LT ON. FOUND THE EDP DIFFERENTIAL PRESS INDICATOR LEAKING. FOUND THE O-RINGS WORN/CUT. REPLACED O-RINGS. SERVICED RT HYDRAULIC SYSTEM TO FULL. NO LEAKS WERE NOTED. CLEANED PYLON WITH SOAP AND WATER.