RNP Required Navigation Performance
Remote Oceanic: RNP in a specific area NAT 12.6, WATRS West Atlantic Route Structure 4 and 10 since last May 2008, EU SAM 10, Pacific 10, AORRA Atlanic Ocean Random Route Area 10, IORRA Indian Ocean 10, SCS 10.
Enroute: USA 4 and Q routes 2,
EU BRNAV requires accuracy of 5nm on the track is not RNP you can fly without a data base.
Terminal: USA RNAV1 RNP1, EU PRNAV RNP1
APP: RNAV RNP 0,3,
RNP SAAAR Special Aircraft and Aircrew Authorization Required which in EU is called RNP AR Authorization Required 0.3, 0.20, 0.15, 0,10
FMS Data Base has the required RNP and deflects the CDI to the second dot when the ac position away of the track is equal to the RNP value. The switch from one RNP value to the next happens automatically at certain distance before entering a RNP area.
GPS accuracy 100 m 95%, 300m 100% of the time. Proposed new high accuracy RNAV approaches will be like CATII, 3 down to 0 lateral and Vertical error, and will require WAAS or EGNOS high accuracy GPS signals.
RNP applies to an area, also in different context RNP to a type of RNAV operation requiring additional performance capabilities (AC equipment nav containment, perf monitoring and alerting capabilities.
Iptamenos