What was found
POSITION FERRY MADE AIR RETURN DUE TO LOSS OF YELLOW HYDS. SPOILER #4 LEAK. REMOVED #4 SPOILER REF M.M. 27-64-44-000-001-A. FOUND #4 RIGHT SPOILER ACT LEAKING. REMOVED AND REPLACED #4 SPL ACT. REF AMM 27-64-51-400-004-A, 27-64-00-820-001-C, 27-64-00-710-001-A. OPS CHECKS OK. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1926184 SN OFF 5515 CONTROL, SERVOC OFF 31-2763-9-0003 5515 ON 31-2763-9-0003 3164. INSPECTED INSTALLATION OF #4 SPOILER ACTUATOR IAW AMM 27-64- 51-400-004-A, 27-64-00-820-001-C, 27-64-00-710-001-A.