American Airlines customer service for support 1-801-614-4780, you can call their 24/7 American Airlines Phone number hotline at 1-801-614-4780. OTA (Live Person) or 1-800-American Airlines 1-801-614-4780.

https://www.turbotenant.com/community/discussion/how-do-i-upgrade-my-name-on-american-airlines-a-quick-guide/