From circa January 2002, RVSM will be fully implemented within the geographic extent of the NAT Region. When this happens, RVSM levels will be from FL 290 to FL 410 inclusive. MNPS Airspace will then become a full subdivision of RVSM Airspace. At the time this Edition of the Manual was produced however, RVSM was in the second phase of its implementation, between FL 310 and FL 390 inclusive, within MNPS Airspace and designated transition areas only. 1.1.6 All aircraft operating within MNPS Airspace are required to have a specified minimum navigation performance capability and to be in possession of an MNPS approval issued by either the State of Registry or the State of the Operator, as appropriate. 1.1.7 Furthermore, aircraft operating in RVSM Airspace are required to be compliant with the Minimum Aircraft Performance Specification (MASPS) and hold an associated RVSM approval issued by either the State of Registry or the State of the Operator. 1.1.8 Aircraft with MNPS approval only may not cruise at flight levels that are designated for RVSM operations. An RVSM approval issued for the NAT Region does not automatically incorporate the MNPS approval but is valid for operation in RVSM Airspace globally. 1.1.9 Within the NAT Region a volume of airspace can be established for special, usually military, use. Such airspace is known as an "Airspace Reservation. This reservation can either be stationary or moving depending on whether its position remains fixed with relation to the surface of the earth or whether its position in space changes with time (see Part 6).
