As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAT WAS GROUNDED, LANDING GEAR WOULD NOT RETRACT, CREW CONFIRMED MANUAL EXTENSION DOOR WAS CLOSED AND CYCLED GEAR HANDLE AND LANDING GEARS RETRACTED. AIRCRAFT RETURNED TO DEPARTURE, LANDED SAFELY WITHOUT FURTHER INCIDENT. NO EMERGENCY WAS DECLARED. REMOVED, AND REPLACED THE LANDING GEAR CONTROL LEVER MODULE AND ACCOMPLISHED LANDING GEAR SWING.