Originally Posted by
guv1976
... (How AA can impose this responsibility on another carrier is something I have never figured out.) ...
Signed agreement I suspect.
Such as that referred to here: (
https://ssc.aa.com/prmportal_enu/Age...ng%20Index.pdf)
The ticket stock of the second ticket must be of a oneworld carrier, eligible under the Endorsement Waiver Agreement.