You must publish the charges in the State's AIP at least 90 days before they take effect (unless exceptional circumstances apply).
Meta Description: Need the ICAO Doc 9811 PDF? This article explains everything about the Manual on Air Navigation Services Economics (Doc 9811), its role in 5-year ICAO audits, cost recovery, and how to access the official version. Introduction: What is ICAO Doc 9811? In the complex ecosystem of international aviation, financial sustainability is as critical as runway safety. Every state that operates international airports or provides Air Navigation Services (ANS) faces a fundamental question: How do we charge airlines fairly without violating international treaties? icao doc 9811 pdf
Divide the total cost by the total "Service Units." A common unit is the "Flight-Kilometer" or "MTOW-Kilometer." Example: If total cost = $10M, and total flown kilometers = 1M, the rate is $10 per km. You must publish the charges in the State's