What was found
LOSING CENTER HYDRAULIC SYSTEM FLUID. CURRENTLY ABOUT 47% LEFT IN RESERVOIR. FOLLOWED FLIGHT MANUAL NON-NORMALS 2.130.8 AND HAVE 2 ACMP & AIR DRIVEN PUMP OFF TO PRESERVE FLUID FOR LANDING. UPON FURTHER INVESTIGATION SEAL ON RETURN SIDE OF C2 CASE DRAIN ASSY FOUND IN POOR CONDITION. SEAL REPLACED IAW AMM 29-11-18-404-036. CENTER HYD SYS SERVICED TO FULL IAW AMM 12-12-01. LEAK CHECK CARRIED OUT FOR C2 ACMP IAW AMM 29-11-18-404-036, NO LEAKS. CENTER HYD SYS LEAK INSP CARRIED OUT IAW FIM 29-11 TASK 802-C3, NO LEAKS VISIBLE.