http://www.aa.com/viewPromotionDetai...itle=goldoffer

Log in or register and use promo code: HVDGR.

It's easy to sign-up for your exclusive offer.

Register by September 27, 2013, using the special promotion code you received in the mail and enjoy a whole new world of perks. Your AAdvantage® Gold status will be valid through December 31, 2013. You'll be eligible for elite benefits including:

25% mileage bonuses on eligible flights
Priority Access at check-in and boarding
Two free checked bags
Complimentary access to Preferred Seats
Special upgrade privileges
Don't forget, as an added bonus, we're giving you 10 500-mile upgrades just for registering!

How about extending your AAdvantage Gold status through February 28, 2015?

Start flying and earn 4,500 elite-qualifying miles or points on American and other select airlines* between October 1, 2013, and December 31, 2013, to retain your elite benefits.

You only need to register once for your offer which includes: your upgrade to Gold status, 10 500-mile upgrades and the opportunity to keep your Gold status through February 2015.