Originally Posted by
ThreeJulietTango
Yes, it can, or at an AA ticket office if your city has one.
It used to be you needed one of those old-school validators and a carbon copy and a whole bunch of other things for transactions with multiple forms of payment, but fortunately that went away in April. Now you just swipe and go.
I'm not sure if you would be subject to the airport service fee. I would personally waive it since there's no other way to complete the transaction, but YMMV.
AA's generally waived it when I've used vouchers at the airport.