As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) THE LANDING GEAR DID NOT RETRACT WHEN THE CREW SELECTED GEAR UP. THE CREW FOLLOWED THE CHECKLIST AND TRIED CYCLING THE GEAR A COUPLE OF TIMES WITH NO SUCCESS. THEY THEN RETURNED WITHOUT INCIDENT. MAINTENANCE FOUND THE MANUAL EXTENSION LIMIT SWITCH WAS DIRTY AND NOT MAKING CONTACT. THE SWITCH WAS CLEANED AND THE LANDING GEAR WAS FUNCTION CHECKED WITH NO FAULTS FOUND.