Here, have fun with this:
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Class G[/SIZE]
Class G airspace includes all airspace below
flight level 600 not otherwise classified as controlled. (AIM 3-3-1) There are no entry or clearance requirements for Class G airspace, even for IFR operations. Class G airspace is typically the airspace very near the ground (1200 feet or less), beneath Class E airspace.
Radio communication is not required in Class G airspace, even for IFR operations. Class G is completely uncontrolled.
VFR visibility requirements in Class G airspace are 1 mile (1.6 km) by day, and 3 miles (5 km) by night, for altitudes below 10,000 feet (3,050 m) MSL but above 1200 ft AGL. Beginning at 10,000 feet MSL, 5 miles (8 km) of visibility are required, day and night. Cloud clearance requirements are to maintain an altitude that is 500 feet below, 1000 feet above, 2000 horizontal; at or above 10,000 feet MSL, they are 1,000 feet below, 1,000 feet above, and 1 mile laterally. By day at 1,200 feet (370 m) AGL and below, aircraft must remain clear of clouds, and there is no minimum lateral distance.
And, as I said before, the craft in this article is a fairly typical radio controlled airplane.
It's only distinction is going to be its distance of overland travel. Keep in mind if it doesn't encounter any population centers, or terminal control areas, IMO, they didn't even need to, or barely needed to, ask for the FAA's permission. (I am admittedly wrong about this. But, I believe that distance attempts have been flown with model aircraft, and I'm not sure how much intervention occurred from the FAA).
For example:
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Do I need to get approval from the FAA to fly a model aircraft for recreation?[/SIZE]
No. FAA guidance does not address size of the model aircraft. FAA guidance says that model aircraft flights should be kept below 400 feet above ground level (AGL), should be flown a sufficient distance from populated areas and full scale aircraft, and are not for business purposes.
You see the only stumbling block there is, "not for business". Other than that, no permission would be needed.
For more troll food, go to the horse's mouth:
http://www.faa.gov/about/initiatives/uas/uas_faq/?print=go