This discussion is sure sending people out in a wide holding pattern! As I have been investigating private-use airports the issue of landing off-airport comes up a lot. Is there anything in the FARs that makes it a violation to land at other than an "open" airport? No, it only says that if you damage something, you're responsible for it. Some airports are "closed," marked with X's or R's but are in fact just prior-permission-required. My point is, it's a civil property rights thing, not an FAA matter. Just the same as if you landed on a road somewhere, the FAA doesn't care as long as you don't bend anything, but the owner of the road might. Some states and counties have different rules, for instance in California you can't land within city limits, within 1000 feet of a school or in certain designated wilderness areas but where it isn't prohibited, what rule is being broken?