Level 10 - 20

• With the type 2 airplanes you will have to have type 2 or 3 airports. You may need to close down some of your type 1 airports.

3 main ways to use your airports;

1. fly between only type 2's with type 2 airplanes and type 1's with type 1's TO KEEP IT SIMPLE
2. OR get rid of the type ones all together and just fly between type two airports (not recommended for Australia or Africa)
3. OR make a system of two or more type 1's clustered around a type 2 and have type ones shuttle jobs to these airports in the cluster, and with the type 2's  travel between the type two airports carying jobs to the airport and the clustered airports using layovers and the shuttle.

• I would keep these two clusters on the same continent but make sure that your type 2 airplanes can make the trip without stopping if possible (you may need to upgrade the type 2 airplanes) (Europe and Asia or N. America and S. America)