As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT MAIN LANDING GEAR FAILED TO RETRACT. GEAR HANDLE WOULD NOT COME UP. RETURNED TO DEN. *S/D* REPLACED LANDING GEAR ACCESSORY UNIT PER MAINTENANCE MANUAL. SYSTEM CHECKS OK. NOTE: ALSO ENTERED ITEM TO REPLACE LG HANDLE LOCK SOLENOID AS PRECAUTIONARY ACTION.