Pretty slight. The whole thing had a mass of around 2 lbs and the electronics were mounted in a Styrofoam cooler. Although it is probably not a good idea to la

Pretty slight. The whole thing had a mass of around 2 lbs and the electronics were mounted in a Styrofoam cooler. Although it is probably not a good idea to launch it right at an airport. As long as your payload is under 4 lbs there are virtually no requirements. Here is an excerpt of FAA FAR 101 http://www.eoss.org/pubs/far_annotated.htm http://www.eoss.org/pubs/far_annotated.htm Canadian geese are demonstrably a much greater threat.