By 2019, 4,200 had been ordered—one-quarter of all Airbus single-aisles—including 2,400 neos, one-third of all A320neo orders. [14] The A321 has double-slotted flaps. The Airbus A321 is a narrow-body (single-aisle) aircraft with a retractable tricycle landing gear, powered by two wing pylon-mounted turbofan engines. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.