As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF WITH GEAR SELECTED UP, LEFT GEAR UNSAFE (RED) LIGHT REMAINED ON. CREW CYCLED GEAR WITH SAME RESULT. RETURNED TO MCI AND LANDED WITH THREE GREEN LIGHTS, NO RED. MAINTENANCE ADJUSTED DOOR LATCH MECHANISM AND PERFORMED GEAR SWING. SYSTEM CHECKED GOOD.