What was found
HYD QTY LOW L EICAS ADVISORY, LEFT HYDRAULIC SYSTEM RESERVOIR QUANTITY LOW. QTY < .40. LEAK CHK FOUND RT OUTBD AILERON OUTBD PCU CAP (IPC 27-11-11-11 ITEM 665) LEAK. INSPECTION FOUND LOCKWIRE BROKEN. CAP REMOVED FOUND O-RING BROKEN. O-RING (IPC 27-11-11-11 ITEM 670J) REPLACED AND CAP INSTALLED AS PER AMM 20-10-19 & 20-11-00. SUBSEQ LEAK CHECK SATIS. LH HYD SYS FILTERS POP OUT PINS INSPECTED SATIS. HYD FLUID FILLING TO FULL AS PER AMM 12-12-01. FLT CONTROL ACTUATOR CONFIDENCE TEST CARRIED OUT SATIS AS PER AMM 27-02-00.