These costs form the basis of route charges.
This version of the 'Principles' supersedes Doc. No. 18.60.01 of January 2018.
Principles for Establishing the Cost-Base for En-Route Charges and the Calculation of the Unit Rates
Doc. N° 20.60.02
The Principles for establishing the cost-base for route facility charges and the calculation of the unit rates set out the common principles by which the costs of providing air navigation facilities and services are established by States/service providers.