As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER DEPARTURE, LEFT MAIN GEAR WOULD NOT RETRACT. RETURNED TO RDM. FOUND TANG BROKEN ON LOCKING WASHER FOR LEFT MAIN LANDING GEAR ACTUATOR. REPLACED TANG WASHER AND RIGGED LEFT MAIN GEAR IAW MM 32-32-11. PERFORMED SEVERAL GEAR SWINGS WITH NO DEFECTS NOTED.