hello renaps
The RNAV / RNP designation depends mostly on the airspace designers' needs and on the navigation capabilities of the onboard NAV system (FMC). RNAV 5 is used in the Middle East (MID) and European (EUR) Regions; it is designated as B‐RNAV (Basic RNAV) in Europe for Continental en-route airspace concept. RNAV 5 operations are based on the use of RNAV equipment which automatically determines the aircraft position using input from one or a combination of the following types of position sensors: VOR/DME; DME/DME; INS or IRS; and GNSS. For RNAV 5, direct pilot to ATC (voice) communication is required. Radar monitoring by the ATS may be used to mitigate the risk of gross navigation errors.
Terminal airspace UAE: arrival and departure
In the UAE, the existing terminal airspace concept, which includes arrival and departure, is supported by RNAV 1 applications. The European terminal airspace RNAV application is known as P‐RNAV (Precision RNAV). Although the RNAV 1 specification shares common navigation accuracy with P‐RNAV, this regional navigation specification does not satisfy the full requirements of the RNAV 1. The pilot must be able to use RNAV equipment to follow flight guidance for lateral RNAV 1 no later than 153 m (500 ft) above the airport elevation. The altitude at which RNAV guidance begins on a given route may be higher (e.g. climb to 304 m (1,000 ft) then direct to .)
The UAE required Navigation Specification (RNAV / RNP) by Flight Phase is as follows:
RNAV 1 for arrival, initial, intermediate, missed approach and departure portion
of the flight.
RNP APCH 0.3 for the final aproach.
RNAV 5 is an en‐route navigation specification which may be used for the initial part of the STAR outside 30 NM and above MSA.
RF legs are waypoints connected by a constant radius course similar to a DME arc therefore, this directly depends on the FMC capability rather than a particular State or Aispace requirement.
Hope this time, I managed to answer your query. Greetings