1. Are these AA cards churnable?
Yes and No. The general rules are:
•Personal AA cards: As of August 25, 2013 all linked personal AA cards can be churned only after Citi decides that you are no longer an existing cardmember. This usually occurs between 12 and 26 months after your last successful AA personal card approval of any type. Although it is not a hard-and-fast rule, 18 months after previous approval is the most common. YMMV. You do not need to cancel old cards.
◦Note: You cannot circumvent this rule by applying for a card type different from your previous Citi AA card. If your last personal AA card was a Visa, the waiting period for your next personal AA card will be the same regardless of whether you apply for a Visa, MC, or Amex.
•Business AA cards: have been churnable repeatedly without restriction other than the general Citi application rules. Apply once every 91-95 days. Some people have had problems if both the business account (16 digits) and the individual card accounts (16 digits each) are not closed first. Other people have been unable to churn these at all.