American Airline's SSL certificate revoked (aa.com)

According to the Entrust revocation list for the Entrust L1M CA http://www.entrust.net/customer/crl_form.cfm

    Certificate issued by L1M with serial number 1BDA21F20CD791160000000054CDC61A has been revoked.

    Revocation Date: Thursday, December 7, 2017 5:00:17 AM +00:00

    Revocation Reason: Superseded