0000039: [General] Move airport changes function to airport.rs
0000014: [Preferential Routing] TEC Route updates
0000038: [Preferential Routing] NorCal TEC Routes missing
0000037: [Preferential Routing] TEC Routes with different area descriptions cause spurious changes
0000036: [Preferential Routing] Identical TEC Routes with different route number clashes on output
