As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF THE NOSE GEAR RETRACTED BUT THE MAIN GEAR DID NOT RETRACT. SELECTED GEAR DOWN AND GOT 3 GREEN GEAR DOWN INDICATIONS. RETURNED TO POINT OF DEPARTURE, SCOTTSDALE, AZ (KSDL). MAINTENANCE TROUBLESHOT THE PROBLEM TO A LEFT/HAND MAIN LANDING GEAR ACTUATOR INTERNALLY BY-PASSING. THE ACTUATOR WAS REPLACED. LEAK CHECKED AND GEAR SWING PERFORMED AND FOUND SATISFACTORY. THE AIRPLANE WAS RETURNED TO SERVICE.