As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT FAILED TO SHIFT FROM GROUND MODE TO FLIGHT MODE AFTER TAKEOFF. FLIGHT WAS RETURNED TO MCI AND LANDED WITHOUT INCIDENT. MAINTENANCE CONFIRMED CONTAMINATION OF ICE CRYSTALS IN NOSE STRUT FLUID. HEATED AND RESERVICED STRUT TO PROPER LEVELS, OPERATIONAL CHECK NORMAL.