As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR RETURN - PILOTS REPORTED THE THE LANDING GEAR WOULD NOT RAISE AFTER TAKE OFF. RED UNSAFE LIGHTS WERE ON. PILOTS RECYCLED THE GEAR THEN IT WOULD NOT LWR. GEAR WAS MANUALLY PUMPED DOWN AND GOT 3 GREEN LIGHTS AND RED HANDLE LIGHTS WERE OUT. MX REMOVED AN REPLACED THE RT UPLOCK SWITCH AS REQUIRED. ADJUSTED UPLOCK SWITCH AND PERFORMED A HYD OPS CHECK IAW MM 32-60-00.