Just take a look at the rules and conditions at
http://www.aa.com/viewPromotionDetai...&_locale=en_US
Here's what it says....
Includes First Class and Business Class fares booked in F, A, J, R, D or I; Economy Class fares booked in Y, B or H on American Airlines operated flights; First Class or Club World fares booked in F, A, J, R, C, D or I; World Traveller Plus or full-fare World Traveller booked in W, E, T, Y, B or H on British Airways operated flights; Business Class fares booked in J, C, D, R or I; Economy Class fares booked in Y on Iberia operated flights; OpenSkies Prem Plus (booking classes W, E, T, Z, A), OpenSkies Eco booked in Y, B, H.
Flights can booked on AA.com, Britishairways.com, or Iberia.com