From an email I just received - Earn 50% more AAdvantage bonus miles on US Airways for flights through March 2, 2014 More details and link to register on AA website here - Bonus miles on US Airways Click on the link and register with the code AAUSM p.s. I did register and did receive an email confirming I am registered for the promo From the T&C - "Terms and Conditions AAdvantage 50% mileage bonus offer is valid for travel on US Airways, US Airways Express and US Airways Shuttle operated flights (includes codeshare flights marketed by American Airlines) for travel systemwide from January 13, 2014, through March 2, 2014. Offer applies to travel on purchased, published fare tickets that are eligible to earn AAdvantage miles. Bonus miles do not count toward elite status qualification or AAdvantage Million Miler status. 50% bonus miles will be calculated at 50% of the base miles earned or, if applicable, the minimum mileage guarantee. Registration prior to midnight CT on March 2, 2014, is required. Travel flown prior to registration will be eligible for the bonus. Bonus miles will be awarded within 3-4 weeks after the promotion period has ended."