Wirelessly posted (BlackBerry: BlackBerry8530/5.0.0.1030 Profile/MIDP-2.1 Configuration/CLDC-1.1 VendorID/417)
Air Nostrum is a oneworld affiliate, so it should be bookable with AA miles. Of course, there has to be award-seat availability on the Air Nostrum segment, and there has to be a published through-fare on IB from origin to destination.