Precision Area Navigation (P-RNAV) is a continuance of Required Navigation Performance (RNP) evolution in Europe from Basic Area Navigation (B-RNAV), or RNP5 to RNP1.

Precision Area Navigation (P-RNAV) is the term used to describe the accuracy requirements in navigation beyond B-RNAV. P-RNAV requires a Flight Management System (FMS) capable of performing to the accuracy requirements of Temporary Guidance Leaflet 10 (TGL-10) with a cross track accuracy of +/- 1 nautical mile. B-RNAV (Basic Area Navigation) has a required accuracy of +/- 5 nautical miles. The P-RNAV's FMS must be capable of operating with databases approved to DO 200.

P-RNAV is quickly becoming a requirement in Europe as access to airspace for non-compliant aircraft becomes more restrictive. P-RNAV procedures for departures and arrivals are already established at all major European airports and are being installed steadily throughout other European airfields. These procedures are available to all appropriately equipped aircraft. It is anticipated that P-RNAV will be a mandatory requirement by 2010.

Benefits include:

- Compliant aircraft are more likely to obtain quicker arrival and departure clearances than those without the capability
- No hold times
- More efficient routing allowing for quicker en route times and
significant fuel saving.

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