P-RNAV pre dates PBN. However both B-RNAV and P-RNAV have PBN equivalents in RNAV5 and RNAV1.
Here is an extract from: Policy for the Application of Performance Based Navigation in UK/Irish Airspace
RNAV 1 is the ICAO term for terminal airspace navigation applications based on a navigation infrastructure predicated on use of GNSS or DME/DME or DME/DME/IRU.
In ECAC airspace, P-RNAV was introduced in 2000 and therefore pre-dates RNAV 1. Although P- RNAV is directly equivalent to RNAV 1 in terms of performance and functionality, the underlying navigation infrastructure was assumed to be either GNSS or DME/DME.
Consequently, an aircraft approved for European Precision RNAV having only a DME/DME terminal airspace capability may not qualify for RNAV 1 operations in another Region where the infrastructure has been based on aircraft being equipped with Inertial Reference Units (IRU) i.e., supporting DME/DME/IRU.
link:
http://www.caa.co.uk/docs/33/Policy%...d%20111013.pdf
So not really. Under ICAO PBN it would be called RNAV1 in ECAC under current regs it is P-RNAV.
but this is what it says in EUR Regional Supplementary Procedures (SUPPS) (Doc 7030)
4.1.1.4 RNAV 1
Nil.
Area of applicability
4.1.1.4.1 The requirements included in the RNAV 1 and/or P-RNAV specification shall be applied whenever P-RNAV terminal control area (TMA) procedures, excluding the final and missed approach segments, are used.
Note 1.— RNAV 1 and/or P-RNAV approvals are not mandatory in the EUR Region.
Note 2.— RNAV 1 approved aircraft are approved for P-RNAV.
Means of compliance
4.1.1.4.2 Conformance to the navigation requirement shall be verified by the State of Registry or the State of the Operator, as appropriate.
Note.— Guidance material concerning navigation requirements associated with P-RNAV operations is contained in the JAA Temporary Guidance Leaflet (TGL) No. 10 Revision 1.
Source: Proposal for amendment No: EUR/NAT-S 10/02-EUR, approved on 21 February 2011, ICAO Letter Ref: EUR/NAT 11-0149.TEC (NAE/DAC) dated 28 February 2011 refers