What was found
ON CLIMB OUT, DURING RETRACTION OF LANDING GEAR NOSE WHEEL DID RETRACT NOSE DOOR OPEN AND GEAR DISAGREE MESSAGE. COMPLETED THE EMERGENCY/NON-NORMAL PROCEDURE IN THE POM AND GEAR LOCKED DOWN SHOWED 3 GREEN. CONTACTED DISPATCH AND MX CONTROL, AND DECIDED TO RETURN TO DEPARTURE. R & R BRACKET FOR CENTERING CAM SENSOR IAW AMM 32-61-25 READJUSTED SENSOR IAW AMM 32-61-05 PERFORMED OPS CHECK OF EXTENSION AND RETRACTION SYS IAW CRJ 200 32-30-00 PN OFF/ON 16215-105 ALL CHECKS GOOD AT THIS TIME.