Concern over a never-ending pile of costs for airlines as our air traffic control prices soar. 

Provider of the service, Airways, is putting its fees up 17.7% over the next three years. 

It says its pricing is based on the number of flights scheduled in and out of each airport. 

Airline Representatives Executive Director Cath O'Brien told Mike Hosking some countries' governments invest in these services, but here, airlines pay for everything. 

She says they pay for air traffic control the civil aviation authority, and also airport buildings.  

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