The TMC file is an Aerofly FS 2 text file that contains the general description of an aircraft such as the name as shown in the aircraft selection menu, the description text in several languages and some values describing how large, how fast, how heavy the aircraft can be and which aircraft category it belongs to.

A different kind of tmc file is the model.tmc, which defines how the 3D model and textures are to be converted, e.g. the texture resolution for each quality setting.

That attribute sets the text that is displayed in the aircraft selection menu. You may include spaces and special characters.

The attributes DescriptionTextDE, DescriptionTextEN, DescriptionTextES, DescriptionTextFR and DescriptionTextJP define the text that is show inside the Aerofly aircraft selection menu depending on the user's language setting. If a text for a certain language is not defined the aerofly replaces it with the English description text.

The ContactSpheres define the attitude of the aircraft when the simulation places it onto the ground. MinimumSpeed defines the speed at which an aircraft is moving when quick lift up is activated or when the aircraft is switched in the middle of the flight (it checks weather the speed is between MinimumSpeed and MaximumSpeed)

Airplane, Helicopter, Glider, Jet, … are all tags that help Aerofly categorize the aircraft.

WingSpan and Mass are used internally to have an idea of the overall dimensions and mass of the aircraft.