RNP operations gradually are being introduced around the world on
a regional or case-by-case basis. Operations requiring RNP capabilities
are noted on the applicable airways and regional airspace documentation
or procedure charts. These operations have varying RNP functional
and performance requirements. Some are more consistent with ICAO
RNP, which allows RNAV-equipped, non-RNP airplanes to be qualified
to a level of RNP equivalency based on originally installed equipment,
demonstrated performance, or both. Other operations require full
RNP RNAV functionality. Table
2 lists some initial regional approvals of RNP operations.
RNP RNAV operations.
In most cases, RNP RNAV operations are initiated by a few operators
who have determined that their existing airplane RNP RNAV capabilities
can provide operating efficiencies. Achieving RNP RNAV operational
approval requires operators to closely coordinate with all interested
parties, including airspace providers, regulatory agencies, and
flight crew representatives. This ensures that decisions on route
or procedure configuration, adjacent route separation, and obstruction
clearance take into account important factors such as the availability
and quality of surveillance, communications, the navigation infrastructure,
traffic density, and air traffic control procedures. In the future,
when routes and procedures are developed to RNP criteria, the regulatory
authority responsible for an airline's operation will verify that
RNP-capable airplanes meet the RNP requirements for the operation.