Each texture is a layered Tiff image compatible with Sketchbook Pro and most image editing software. I would recommend Sketchbook Pro as some of the layers are not-rasterized text layers and may behave unexpectedly in other programs.

Control surfaces, cockpit canopy, and gear bay doors are controlled by an armature, the landing gear are controlled by a parented object (the main gear spar with an object constraint, usually rotation)

Addon features - such as the wing-mounted accessories - are simply parented to the fuselage

the cockpit interior is rudimentary and uses simple materials