As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) PILOT REPORTED LOSS OF HYD PRESSURE WHEN GEAR SELECTED UP AFTER TAKEOFF. COMPLETED AN EMERGENCY EXTENSION AND LANDED WITHOUT INCIDENT. FOUND A BAD O-RING ON THE LT OTBD GEAR ACTUATOR. REPLACED O-RING, COMPLETED LEAK CHECKS AND GEAR SWINGS. CHECK SERVICEABLE.