As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DEPARTURE FROM MKE THE RED GEAR HANDLE "LANDING GEAR UNSAFE" LIGHTS REMAINED ILLUMINATED AFTER LANDING GEAR RETRACTION. CREW EXTENDED LANDING GEAR RESULTING IN 3 GREEN DOWN & LOCK LIGHTS ILLUMINATED AND UNSAFE LIGHTS EXTINGUISHED. CREW RETURNED TO MKE. LANDING WAS UNEVENTFUL. MAINTENANCE PLACED AIRCRAFT ON JACKS AND NOTED LEFT SHOCK STRUT OLEO WAS NOT FULLY EXTENDED. REPLACEMENT STRUT PLACED ON ORDER. UNSERVICEABLE OLEO SENT TO CESSNA FOR INSPECTION/REPAIR.