When checking my status in the B4UFly app, it indicates I am within 5 miles of an airport. Airnav.com indicates the airstrip location is actually about 8 miles south. I suspect the airport's owner's address is being reported by the app and not the actual airstrip location. The airstrip is a privately-owned 1 aircraft airstrip and contacting the owner has been futile. Question is, if I am unable to contact the owner, which location should I consider being within 5 miles of?