N39

This is an FAA aircraft. I saw it yesterday flying from Niagara Falls to a spot off the south shore of Lake Ontario. He just flew in circles for about an hour offshore and went back to Niagara Falls. Previous flights seems to have it doing the same thing off the southern NJ coast last week. Probably testing radar reception patterns.

Or testing a major Navaid. Tons of good info about what they do on the Google

google.com/search?q=faa+fli … 8&oe=utf-8