As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) CREW REPORTED THEY LOST NR 2 HYDRAULIC FLUID, WITH ASSOCIATED RUDDER ISO CAUTION AFTER CYCLE GEAR FOR LT GEAR DOOR LIGHT AND RETURNING TO DEPARTURE. MAINTENANCE, FOUND LT GEAR OTBD. REAR DOOR PUSHROD AND SPRING FAILED, AND SEVERED HYD LINE CAUSING HYD SYSTEM TO DEPLEAT. HYD LINE AND DOOR ROD & SPRING REPLACED.