DAL1435 was descending through about 12000 feet when the flight crew checked in with Atlanta approach and told them they had landing gear issue (gear disagree). They slowed to 210 Kts so they could extend the landing gear and evaluate the situation. They descended to 7000 feet and extended their landing gear. The flight crew then declared an emergency stating the nose gear did not come down. They asked for delaying vectors while they ran checklists and contacted their maintenance. They then asked to perform a low approach over KATL's runway 27R so that the tower personnel could see whether or not the nose gear had come down. The tower controller as well as an aircraft on the ground confirmed that the nose gear had come down. They came around and landed safely a short time later on the same runway. The taxied off the runway and stopped on a taxiway so that emergency crews could check out the aircraft.
https://www.flightaware.com/live/flight/DAL1435
