American AAdvantage is changing the qualification rules for lifetime elite status from 1 December. Currently they have the most generous qualification rules of all airlines in that all mileage counts, even ones earned through credit card spend. From 1 December 2011 further accrual towards lifetime elite status will only be for miles earned by flying.
This is still at the more generous end of the spectrum of airline elite status qualification requirements (some frequent flyer programs have no lifetime status, or only count flights on their home airline). The notice given for the change has been relatively short, which makes it difficult for some who wish to accelerate their earning to earn lifetime status before the rule change.
I’ve updated the full listing of lifetime elite frequent flyer status.