The DC-9 is equipped with the Sperry SP-50 Automatic Flight Control System (AFCS), which is a gyroscopically controlled electromechanical system. The DC-9 is an old school aircraft and the autopilot installed in this aircraft is very much old school too. If you are used to flying with modern autopilots, you will find that this autopilot works a bit differently than the other autopilots you may be familiar with.
What exactly is radio navigation? In short, radio navigation is the art of locating your position on the earth by use of radio waves. Radio waves can be used to find direction (bearing), distance (ranging) and also velocity to or from a station.
I was recently ask why Coolsky doesn't develop for and support Lockheed Martin's Prepar3D flight simulator. The discussion quickly turned into one about the future of flight simming since P3D is often held up as the future of flight simming. I will try to explain here why I don't develop for or support P3D, and why I don't think it is the future of flight simming.
Avsim.com has just posted another interview they did with me. The previous interview was about me, Coolsky, my partners and products. This new interview is about the DC-9 Classic specifically. I talk about the DC-9 Classic features, what it has to offer and why I think you should have a look at it.