As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF, FLIGHT CREW WAS UNABLE TO RAISE GEAR HANDLE. FLIGHT CREW ACCOMPLISHED CHAPTER 3 PROCEDURES IN COCKPIT OPERATING MANUAL AND RAISED GEAR. GROUND CONTROL RELAY CIRCUIT BREAKER RELAYS WERE OPEN FOR FLIGHT AND RESET AFTER LANDING. AC LANDED UNEVENTFUL. OPEN (K)