People that think the airlines want it private for "modernization" should stick their head into a 20 year old airline airplane cockpit and see how interested they are in modernization of their equipment. They scream bloody murder when they have to spend another dime on equipment. The airlines think they own the sky and they want the deed. If you are under the impression that part 91 won't be paying user fees under a privatized system in the future, you are in for a big surprise.
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