As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEAR UP DISAGREE ON DEPARTURE. NOSE LANDING GEAR WOULD NOT RETRACT. PERFORMED QRH AND THE LANDING GEAR EXTENDED. (FLT#5591) REMOVED AND REPLACED THE NOSE LANDING GEAR CENTERING SENSOR BRACKET AND ALSO REPLACED HARNESS AS REQUIRED IAW AMM. PERFORMED GEAR SWINGS WITH NO FAULTS NOTED OPERATIONAL CHECK IS GOOD IAW AMM.