What was found
DURING CLIMB, FLIGHT REPORTED THAT NR 1 HYD SYS WAS LOW. FLIGHT RETURN TO DEPARTURE. ON THE WAY BACK- CREW REPORTED FLAPS WERE INOPERATIVE AT FL060 IN A HOLD SOUTH OF DEPARTURE. CREW DECLARED EMERGENCY. LANDED WITHOUT FURTHER INCIDENT. ACFT TOWED TO GATE. FOUND RT ANTI-SKID BRAKE VALVE LEAKING. REPLACED RT ANTI-SKID VALVE, REPLACED NR 1 EDP, AND NR 1 CASE DRAIN FILTER. BLED NR 1 HYD SYS AND REPLENISHED FLUID AS REQUIRED. GROUND RUNS, FUNCTION CHECKED C/O, NO LEAKS, AC GROUND CHECKS SERVICEABLE. RT SKID CONTROL VALVE REPLACED IAW AMM 32-46-11. ANTI-SKID SYS FUNCTION CHECKS CARRIED OUT IAW AMM 32-46-00.