As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AFTER DEPARTURE AND APPROXIMATELY 10 NM FROM AIRFIELD, SMOKE WAS OBSERVED COMING FROM THE COCKPIT FLOOR. THE EMERGENCY CHECKLIST WAS FOLLOWED AND ACFT RETURNED TO BASE. THE CAUSE OF THE SMOKE WAS THE HYD PUMP AND MOTOR ASSY, UNIT WAS REPLACED ALONG WITH A PRESSURE SWITCH WHICH CONTROLS THE CUT-IN AND CUT-OUT OF THE MOTOR.