As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR INTERRUPT, RETURNED, EMER DECLARED, LANDING UNEVENTFUL & ACFT WAS OVERWEIGHT. THE CREW REPORTED RT HYD QTY CAUTION MSG IN FLIGHT & NOTED A LOSS IN HYD QTY. FOUND RT HYD SYS TRANSFERRING TO CTR SYS & OVERFILLING THE CTR SYS RESERVOIR, CAUSING IT TO FLOW OUT THE OVERFLOW TUBE & RUN BACK ALONG THE BOTTOM OF THE AFT FUSELAGE. REPLACED THE LT SIDE ANTI-SKID VLV MODULE VAL6251 IAW AMM 32-42-03.