The aim of this stage is to ensure global standardisation of RNAV and RNP specifications and to limit the proliferation of navigation specifications in use world-wide.

Sources and standards according presentation and examination was established are:

• ICAO PBN iKIT published in 2015.
• ICAO Doc 9613
• RNAV to RNP Instrument Approach Chart Depiction, a presentation by ICAO, February 2016
• Doc 9997: Performance-based Navigation (PBN) Operational Approval Manual, 2nd Edition, 2015
• European GNSS Contingency/Reversion Handbook for PBN Operations: Scenarios and Options. PBN Handbook No.6, Feb 2019
• Regulation (EU) No (EU) 2016/539: Pilot training, testing and checking for PBN