The reason for this is because without these terrain products installed before the airports you will be missing such features as:
- Auto insertion into your scenery library
- Properly aligned roads, rivers and service lines
- Seamless blending of surrounding terrain
- Functioning night lighting systems
Most of the product pages on our website will state which terrain scenery product is required for each of the airports to function correctly, however if in doubt please either contact us or visit fullterrain.com for further information.