Must have as a pilot

All my maps are saved for offline use during flight
Nevertheless it happens pretty often they dont open when I want to use them during a flight while offline
There might be a problem here! Thanks for the update
If you have a way to draw a great circle route between 2 airports that would be the top
Sorry for asking so much but your app is by far much better than the complicated expensive stuff provided by the major airline I work for
Thanks a lot

Jcdae about Airports, v3.6.4