The one bag rule for American is 36ci right? Even a western flyer is bigegr so I don't really see why I would even try at that size. Just not enough space. They are doing to encourage people to check bags of course and I do not do that for any reason. I would as soon leave extra items on my hotel bed and lose them as pay the 25 dollars. I will not pay ever and if other air lines begin to try forcing the issue I will cease flying. I do check a bag on delta as that is free for me. I hate American and I hope the merger with us airways dies.