Obergrafeter wrote:
So the FAA relies on the US post office to find us and if not revokes our registration so they can tell homeland security that particular aircraft cannot be a threat. I feel safer just thinking about it.
You are required by law to notify the FAA of change in address within thirty days for your pilot's certificate. There is a simliar law for the address of the owner of an airplane, although I am not sure of the exact number of days. These laws have been in place for years, well before 9/11. They are being taken more seriously now, however.
There was a an informative article in AOPA magazine a month or so ago about how seriously the FAA is taking enforcement actions against aircraft owners and pilots who don't have their registration paperwork in order. Interesting read, and I am sure a wake-up call to a number of folks.