As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4375 (TUL TO MSP) CREW RECEIVED A GEAR DISAGREE ON CLIMBOUT AFTER THE GEAR HANDLE WAS SELECTED UP. THE AIRCRAFT PERFORMED AN AIR RETURN BACK TO TUL. FOUND NOSE GEAR TO BE IMPROPERLY SERVICE. RESERVICE IAW AMM 12-12-32. GEAR SWINGS GOOD. PERFORMED GEAR SWING. OPS CHECK GOOD. AIRCRAFT OK FOR SERVICE IAW AMM 32-30-00.