functional airspace block
as defined in Commission Implementing Regulation (EU) 2017/373 of 1 March 2017 laying down…, Article 2, point (25)
25. "functional airspace block" means an airspace block based on operational requirements, reflecting the need to ensure more integrated management of the airspace regardless of existing boundaries;
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Also defined in
- Regulation (EC) No 549/2004 of the European Parliament and of the Council of 10 March 2004 laying down the framework… 32004R0549, Article 2, point (25)
an airspace block based on operational requirements, reflecting the need to ensure more integrated management of the airspace regardless of existing boundaries