With so many aircraft designs flying around, why choose to develop a DC-9 for FSX? It’s a cool aircraft! What more do you need?! Well, actually the logic behind choosing to develop the DC-9 goes a bit deeper than that. I will try to explain.
You asked for it and here it is: The widescreen version of the 2D panel! You will now be able to fly and view the DC-9 Classic on your cool widescreen display without any stretching or squeezing.
Failure simulation. This is what in my opinion takes the DC-9 Classic, and all other addons that includes such a feature, to the next level. Usually when you simulate a system in an aircraft, you simulate ON or OFF in a normal state. With failure simulation a system can also be simulated ON or OFF in a failed state. While OFF is usually OFF regardless of state, ON and failed at the same time is where it can get really busy real fast on the flight deck.
The cowboy's checklist for the DC-9 Classic, created by Thomas Thurnheer, contains the minimal steps needed to operate the DC-9 Classic. This checklist has been designed for those who like to keep the workload low while starting out flying the DC-9 Classic or for flying online.