As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAS - FLT NR 621 - DURING DEPARTURE THE GEAR HANDLE WOULD NOT MOVE UP. RAN 'GEAR WILL NOT GO UP' CHECKLIST AND THE TAKEOFF WARNING CONTINUED TO SOUND AFTER FLAPS WERE FULLY RETRACTED, RETURNED TO LAS. REPLACED LANDING GEAR SAFETY SWITCH. PERFORMED LANDING GEAR EXTENSION AND RETRACTION TEST AND GEAR OPERATED NORMALLY. (M)