As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT MAIN WOULD NOT RETRACT. - PERFORMED GEAR SWINGS AND TROUBLESHOOTING IAW CE560 MM CHAPTER 32-30-00 WITH NO DISCREPANCIES NOTED. SUSPECTED MLG RETRACT ACTUATOR, REMOVED LEFT MAIN GEAR ACTUATOR AND INSTALLED AN INSPECTED ACTUATOR IAW CE 560 MM 32-31-04. PERFORMED SATISFACTORY GEAR SWINGS AND LEAK CHECKS.