What was found
(CAN) DURING APPROACH TO AIRPORT, NR 2 LIGHT HYD PUMP FAULT. LOSS OF HYD NR 2 FLUID (QTY 4). PAN-PAN CALL DECLARED & A/C RETURNED TO DEPARTURE AIRPORT. QRH PROCEDURE FOLLOWED & A/C LANDED WITHOUT EVENT. EDP NR 2 FAILURE OR PRESSURE MANIFOLD FAILURE (LEAKAGE) UNIT CLEANED & VISUALLY INSPECTED. ROTATION CHECK CARRIED OUT, SATISFACTORY. UNIT RELEASED FOR CONFIRMATION TEST, RETURNED FOR DRAFT SEAL LEAK. UNIT PARTIALLY DISASSEMBLED TO INVESTIGATE FAULT. PARENT THREADS STRIPPED IN HOUSING. MATING RING & ELEMENT WORN, PISTON SHOES WORN. EDP NR 2 REPLACED. SYS NR 2 RETURN FILTER REPLACED. SYS NR 2 PRESSURE MANIFOLD REPLACED. CASE DRAIN FILTER REPLACED. SYS NR 2 BLEEDING & REFILLING.A/C RELEASED INTO SERVICE.