Q. I would like to inquire about the cost of the white/blue trim small aircraft that fly all day in my neighborhood. I do not live near a major airport. The planes are loud and plentiful (every 2 minutes), and some of them have STATE printed in blue while others have numbers (for example N525ER and various others). Are these government planes? I would like to know the cost to the taxpayer as well as the purpose of the aircraft if, in fact, these are government planes.