Under DOT regulation
14 CFR 399.85(c), "all e-ticket confirmations ... must include information regarding the passenger's free baggage allowance and/or the applicable fee for a carry-on bag and the first and second checked bag". But AA's reissued eticket confirmation emails systematically lack this information -- in my experience, they literally
never include it.
Of course a reissue can change baggage allowance. A reissue can change the destination of a ticket which typically changes baggage allowance. (Example: change a coach transatlantic ticket with one free checked bag into a domestic coach ticket with no free checked bags.) Not to mention reissues which change class of service (upgrades for $ or AAdvantage redemption), change carrier, etc. And these reissues are exactly the situations when consumers and even airline staff are most likely to be confused about baggage allowances and hence would most benefit from information in the eticket confirmation as required by regulation.
Last week I filed a
complaint noting American's deficiency in this regard. The
docket page can accept public comments. Perhaps others have relevant experiences to share, e.g. instances in which they wanted but didn't receive this information, or instances in which this information could resolved a dispute or prevented an unexpected fee.
My complaint also notes instances of specific harm, including a friend upgrading with systemwides from my account, who 1) didn't receive baggage information in his reissued eticket confirmation, then 2) called AA and received incorrect information about his baggage allowance. Annoying!