What was found
(CAN) DURING CRUISE, FLIGHT CREW NOTED A LOSS OF #2 HYDRAULIC SYSTEM PRESSURE. AIRCRAFT DIVERTED TO AN ALTERNATE AIRPORT. - #2 HYD SYSTEM LOSS OF PRESSURE. - DURING FULL LANDING CONFIG, CAUTION LIGHTS ILLUM: HYD ISO VLV HYD PUMP HYD FLUID HOT - HYD ON SYS 2 FOUND ZERO QTY. - INSPECTION FOUND LOSS OF HYD ON SYS 2 (ZERO QUANTITY). - INSPECTION FOUND LEAK COMING FROM PTU. - FOR REPLACEMENT OF PTU. PTU REPLACEMENT COMPLETED. CASE DRAIN DIFFERENTIAL PRESSURE INDICATOR EXTENDED. REQUIRED HYD FLUSHING PRIOR REPLACEMENT OF EDP. PTU REPLACEMENT COMPLETED. -HYDRAULIC FLUSHING COMPLETED -EXTENSION/RETRACTION TEST COMPLETED -SERVICING OF HYDRAULIC FLUID AND OPERATIONAL TEST OF EDP AND PTU (TC# 20190521001)