File Formats used by MSFS

Contributed by Atif Zafar

Scenery files containing elements such as static 3D models, dynamic objects, terrain, roads etc. .BGL extension
Airplane model files .MDL extension
Panel files .CFG (configuration) and .BMP (for panel images)
Gauge files .GAU (these contain the code that defines the behavior of gauges inside a panel)
Textures for airplanes .0AF, .1AF, .2AF (AF probably stands for Aircraft Factory)
Aerodynamics files for aircraft .AIR
Textures for scenery objects and terrain .PAT, .R8, .OAV, .BMP etc. (multiple extensions exist for these)
Adventure and Situation files .STN (?)