Those are textures only for the default Douglas DC-3F painted in the Altair
Global Logistics livery. All you have to do is unzip the package into
the default Douglas DC-3 folder and add the content of the readme into
the aircraft.cfg file. Detailed step-by-step instructions are included
in the readme file.
ENTERTAINMENT PURPOSES ONLY
WARNING: THE CONTENT FROM THIS SITE IS NOT
INTENDED FOR ACTUAL AVIATION USE