DrMack
Line Up and Wait
You keep talking about "private benefit." The Congress and the FAA are pretty clear that when you take money from others in return for providing air transportation to others, that is no longer a case of "private benefit" -- that is now a commercial transaction unless you stay within some very narrow exceptions. We may debate whether or not the conduct proscribed in the Mangiamele letter really does fall outside the exceptions in 61.113 (and personally, I think it does not, and that letter's logic is flawed), but to suggest that taking money in return for providing air transportation to others is merely using your plane for your "private benefit" is disingenuous. The fact is that those others are now benefitting from your use of your plane, and that means the benefit is no longer "private," i.e., yours alone.
If it is not a public benefit, it is private. If I want to use my private property (airplane) to further my business or the business of my employer, why should I be denied the right to do so? I'm not holding out to the public nor am I employed as a professional pilot. I'm not making a profit on the operation, only reimbursement of the expenses defined by the regulations, which is allowed now but only if I do not carry passengers or property. It's an entirely private operation, using my private property, for private benefit. The current case law surrounding 61.113 impinges arbitrarily on my private property rights.