Consultation on the airspace change process

Closes 18 Dec 2025

Proposal 16: Introduce a proportionate scaled process that enables conventional procedures that have been subject to RNAV Substitution (CAP 1781) and are already operational, to be replicated with fully Performance-based Navigation (PBN) compliant procedures (applicable to a pre-scaled airspace change proposal)

See Chapter 4, page 62

37. Do you agree or disagree with our proposal (option 2) that any procedure designed under CAP 1781 would need to undertake a Level 3 airspace change under CAP 1616?