American Airlines has become the first US carrier to take delivery of the Airbus A321XLR and the only global airline to deploy the airplane in a three-class configuration. The single-aisle plane features 20 Flagship Suite seats, 12 Premium Economy Seats, and 123 Main Cabin seats. American Airlines plans to initially use the A321XLR on cross-country flights from New York JFK to Los Angeles beginning December 18 before deploying the plane on international flights. Ahead of taking delivery of the A