Just recently came across an article on the Internet that detailed the differences between the various DC-9 models, as well as the MD-80 series, the MD-90 and B717. I thought it was a very interesting article and I wanted to share it with you.
Stepping into the cockpit of an advanced aircraft for the first time trying to learn how to fly it with nothing to help you out but a manual, or maybe a good tutorial if you’re lucky, can be quite a daunting task.
If you are an experienced simmer the general knowledge of how aircraft work will go a long way, but you’re still going to have your work cut out for you trying to learn a new aircraft. If you are a newer simmer, you may be in for an extremely steep learning curve.
Why do you have to open the pneumatic crossfeed valves to de-ice the wings? Exactly what does the AC bus cross-tie switch do? And why do the engines only draw fuel from the center tank when all the fuel booster pumps are on? The key to understanding these and many other aspects of your aircraft is studying the schematic drawings for the various aircraft systems. That may sound a little bit dry, but to help you out I have included a Schematics section in the DC-9 Classic Flight Center that gives you live interactive schematic drawings.