**Flights eligible for the additional AAdvantage elite-qualifying points include flights marketed and operated by American Airlines or US Airways, and flights operated by the following partner airlines that are marketed by American Airlines or US Airways (sold as an American or US Airways flight number): British Airways, Iberia, Finnair, Japan Airlines or Qantas. See Terms and Conditions for more information
Trying to answer my own question here - the above is from the AA website. I'm not sure how I'd go about finding a BA flight that is sold as an American flight number...