What was found
ON FLIGHT 3757 CREW REPORTED DURING CLIMB-OUT AFTER COMMANDING LANDING GEAR RETRACTION VIA THE LANDING GEAR CONTROL HANDLE. THE EICAS WARNING MESSAGE GEAR DISAGREE WARNING MSG ILLUMINATED ALONG WITH A NOISE FROM THE NOSE GEAR AREA. CREW FOLLOWED AOM PROCEDURES AND ELECTED TO RETURN TO DFW. AFTER 2 TOWER FLYBYS TO CONFIRM THE SAFETY OF THE LANDING GEAR. TOWER CHECK GOOD. AIRCRAFT LANDED SAFELY AND WAS TOWED TO THE GATE WITHOUT FURTHER INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REMOVED AND REPLACED PSEU IAW CRJ 700 AMM 32-61-01OPS CHECK PERFORMED GEAR SWING IAW CRJ 700 AMM 32-30-00 GEAR SWING CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.