As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB-OUT FROM MKE AFTER LANDING GEAR RETRACTION, THE LEFT MAIN LANDING GEAR DOOR DID NOT INDICATE FULLY CLOSED. CYCLED THE LANDING GEAR HANDLE AND ALL INDICATIONS NORMAL. AIRCRAFT CONTINUED AND LANDED IN MSP WITHOUT INCIDENT. MAINTENANCE TROUBLESHOOTING REVEALED NO DISCREPANCIES.