That's an excellent question these days and I'm glad you asked it. Not many people are aware that a condom can be used as a sling-shot (weapon) so they have stopped allowing them. A man was caught shooting peanuts at passengers and quickly arrested upon landing. Another common thing about condoms and airplanes, with the cabin pressure the way it is the condom could accidently inflate like a balloon if pressure dropped instantly causing opposite and equal pressure that could cause things to be unstable and the condom unusable. The supreme court has been mulling over this with the safety commities of many major airlines on the argument that they could save lives if a flotation device were needed. In a few months you'll be able to reach under the seat for your new flotation device. Happy Flying.