What was found
HYD LEAK IN RIGHT WING ROOT COMING FROM RETURN LINE CHECK VALVE. LEAKING ONE DROP EVERY EIGHT SECS, BECAME STEADY STREAM WHEN B-NUT WAS TIGHTENED. CHECK VALVE REMOVED. REPLACEMENT WOULD NOT THREAD ONTO O/B LINE WITHOUT SEVERELY BINDING. OLD VALVE & MS CAP GOES ON EASILY BY HAND. AOG'D 2 MORE VALVES WHICH ARE NOW PLANESIDE. ALSO, I/B LINE CLAMP BLOCK HAS ITS 3 MOUNTING BOLTS LOOSENED TO FACILITATE. REPLACED CHECK VALVE AND REINSTALLED CLAMP BLOCK.