Radio navigation is the name of the game when you are flying a DC-9. Radio navigation, like all new things in life, can be difficult to understand at first. But once you have mastered it, it becomes second nature and you will have a much better mental picture of where you are, where you are going, and how to get there.
I wasn’t really planning on making this a three part series, but based on the response to the two first parts I feel the need to address some of the comments I have received and tidy up a few loose ends, because the big elephant is still in the room.
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.
The fourth update for the DC-9 Classic is now available for download. This beta patch updates your virtual cockpit, corrects some sound files, updates the flight dynamics, updates the engine simulation and it also fixes a number of smaller issues with the gauge file.