What was found
HYD 1 LO QTY ADVISORY MEESAGE IN CRUISE. QTY WAS AT 12% DECREASED TO 4%. SUSPECTED LEAK. L REVERSER DID NOT DEPLOY ON LANDING. QTY DECREASED TO 0% ON TAXI IN. FOUND LT OUTBOARD ELEVATOR PCU INBOARD RETURN LINE LEAKING FROM SWEDGE. LINE REQUIRES REPLACEMENT. FOUND ALL 4 DPIS FOR #1 HYD SYSTEM IN(361396). R&R LH OUTBD HORIZONTAL STAB PCU RETURN LINE COIL ASSY. AND UNION PER A220 AMP 29-17. LEAK CHECK PERFORMED. NO LEAKS NOTED. RAN BOTH ENGINES AND DEPLOYED BOTH T/RS. OPS CHECK SATISFACTORY. A/C OK FOR SERVICE. SERVICED SYS 1 HYDRAULICS PER A220 AMP 12-10. (LP# 4651831)