As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NOSE GEAR DID NOT RETRACT AFTER TAKEOFF. ATTEMPTED QRH PROCEDURES WITH NO CHANGE. RECEIVED GEAR DISAGREE AND NOSE DOOR OPEN MESSAGE A FEW SECONDS LATER. INSPECTED NOSE GEAR AND COMPONENT, ADJUSTED DOOR PROX SENSOR, SWUNG GEAR PER RJ MM. PERFORMED FUNCTIONAL CHECK OF LANDING GEAR EXTENSION AND RETRACTION, OPS CHECK GOOD.