In a statement released Wednesday, AMR, the parent company of American Airlines, said it has ordered 200 Boeing 737 single-aisle aircraft and 260 planes of comparable size from Airbus.
Half of the order from Boeing is for 737 planes with a new engine that will "offer even more significant fuel-efficiency gains over today's models," AMR said in a statement.
AMR said within five years it expects "to create the youngest, most fuel-efficient fleet among U.S. industry peers."
In addition to the order of mid-sized jets, which seat approximately 160, AMR said it "has plans to acquire 42 state-of-the-art Boeing 787 Dreamliners, to be delivered starting in late 2014."
On top of that, AMR said it has "firm orders" for seven 777-200 wide-body aircraft, which it expects to be delivered between 2013 and 2016.