I've seen 2 piece flyrods carried on, which are what, a bit more than 55", but in a case. I think you're pushing it w/o a case. Carry-ons need to get past not only TSA, but gate agents and the cabin crew, all of whom are blessed with individual discretion. I've had nothing but good luck w/all, and generally carry on 4 rods(34" case)and 5 or 6 reels. True or not I'm convinced some departure points/airlines are more "fish-friendly". If you really want to get it to BZ, check it, or at a minimum, get a cardboard tube for it.