As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IRR - ON TAKEOFF, GEAR HANDLE WOULD NOT RAISE PAST THE OFF POSITION. PUT GEAR HANDLE BACK DOWN. DIVERTED TO DEN DUE TO GEAR HANDLE. CORRECTIVE ACTION - REPLACED LANDING GEAR HANDLE LATCH LEVER SOLENOID PER DELTA M/M 32-31-16. CYCLED GEAR SEVERAL TIMES, ALL NORMAL.