The GANP drives the evolution of the global air navigation system to meet the ever growing expectations of the aviation community. The purpose of the GANP is to equitably accommodate all airspace users operations in a safe, secure and cost-effective manner while reducing the aviation environmental impact. To this end, the GANP provides a series of operational improvements to increase capacity, efficiency, predictability, flexibility while ensuring interoperability of systems and harmonization of procedures. The GASP supports the implementation of the GANP by promoting the effective implementation of safety oversight and a safety management approach to oversight, including safety risk management to permit innovation in a managed way.

The global strategic level provides high-level strategic direction for decision makers to drive the evolution of the global air navigation system. To this end, the global strategic level includes a common vision, global performance ambitions and a conceptual roadmap.

The global technical level supports technical managers in planning implementation of basic services and new operational improvements in a cost-effective manner and according to specific needs, while ensuring interoperability of systems and harmonization of procedures. It contains:

1. two global technical frameworks:
   • the Basic Building Blocks (BBB) framework, which outlines the foundation for a robust air navigation system by defining the essential air navigation services that shall be provided for international civil aviation; and
   • an updated version of the ASBU framework for scalable implementation, which provides the aviation community with the performance benefits expected from the implementation of specific air navigation operational improvements.
2. an associated performance framework, which includes a catalogue of performance objectives and a list of key performance indicators; and
3. a performance-based method for implementation planning of air navigation operational improvements, including a catalogue of performance objectives and indicators.

The regional level addresses regional and sub-regional needs aligned with the global objectives. As such, it contains the ICAO Regional Air Navigation Plans (ANPs) and considers other regional initiatives.

The fourth level, under responsibility of the States, focuses on national planning. The development by States, in coordination with relevant stakeholders, of air navigation plans as a strategic part of their national development plans and aligned with regional and global plans is crucial to achieve the common vision being developed in the GANP. These air navigation plans should serve as reference documents for national investment in air navigation infrastructure.