American Airlines has reportedly finished converting its first Airbus A321 Transcon (A321T ... and is featured on the airline’s more than 200 examples of the aircraft type.

American, Delta, and United's average fleet ages are similar, and all of these carriers have a mix of aging and modern aircraft.

FILE - An American Airlines Airbus A321 takes off from Fort Lauderdale–Hollywood International Airport in Fort Lauderdale, Fla. on Nov. 29, 2018. A smoking laptop in a passenger's bag prompted ...