As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF FROM 36L WITH GEAR HANDLE UP WE RECEIVED A UNSAFE CENTER GEAR INDICATION IN BOTH THE PRIMARY AND SECONDARY INDICATORS. CYCLED GEAR HANDLE PER QRH AND STILL HAD PRIMARY AND SECONDARY CENTER GEAR UNSAFE INDICATION W/GEAR HANDLE UP. GEAR HANDLE DOWN YOU GET ALL FOUR GEAR DOWN AND LOCKED. REMOVED AND REPLACED CENTER LANDING GEAR ASSY AMM 32-15-01-4.