How to fly a rotorcraft normally? (Fallout 4)

In general, I joined the Brotherhood of Steel, and they gave me some checkers for the rotorcraft. First of all, where can I get more? If the minuteman artillery checkers spawn 10 pieces every day in the workshop of the Senchuari, then in the workshop of the Boston airport, I did not find them. I can't see them pathologically, even with the maximum zoom. VATS doesn't work. Sometimes they shoot at the rotorcraft, but it's also not clear from where. Is it possible to somehow make the pilot circle over the object so that you can clear it? Or how to go on the minigun on the other side? Can I take control of the rotorcraft myself? The maximum that I got with the help of the rotorcraft is to blow up the cars below)