Thanks to the YouTuber “A330Driver” there is a nice video review / explanation of this magnifique airplane.

Experience one of the most advanced and realistic airliner simulations ever created.
Fly the Maddog 20th Anniversary Edition brings the legendary MD-80 back to life with study-level systems, authentic flight dynamics, and an uncompromising focus on realism.
Now featuring a completely redesigned virtual cockpit, external model, and virtual cabin, this edition delivers a significant visual upgrade while preserving the depth and accuracy that made the Maddog iconic.
Every system, procedure, and interaction has been meticulously recreated to reflect real-world airline operations, offering an experience built for simmers who demand precision, immersion, and realism.
Rediscover an aviation icon. Fly the real, Fly the Maddog.

See the video below:

This aircraft is available via simMarket.