American Airlines plans to retire up to 45 of its oldest Boeing 737 aircraft through 2020, phasing out 12 aircraft in 2019 and 33 in 2020 (Bloomberg, 09-Mar-2018). The carrier is working to refresh its narrowbody fleet in a bid to reduce the fleet's overall age. American noted: "It's strictly an age-based retirement at this point. We have some that we took back in 1999".
American Airlines to retire 45 737s by 2020
12 March, 2018