Introduction To Primary Oceanic/Remote Airspaces; What Is Primary Oceanic; Definitions - II Morrow Inc. NMC 2001 Operating Manual

Introduction to Primary Oceanic/Remote Airspaces

Operations
Introduction to Primary
Oceanic/Remote Airspaces

What is Primary Oceanic?

Primary Oceanic/Remote airspace operations refers to the
equipment's ability to provide navigation and integrity monitoring
functions described in FAA Notice N8110.60. This means that the
NMC and its GPS sensor are continuously monitoring GPS satellite
integrity and automatically remove a satellite from position
calculations if it is determined to be faulty. Under TSO-C129a, the
sensor also monitors satellite signals more closely than before.
The TSO-C129a requirements for satellite health monitoring are
generally similar to those of N8110.60 with the additional capability
included of allowing you to exclude satellites from the RAIM Prediction
function based on information provided in NOTAMs (NOtice To
AirMen) and NANUs (Notice Advisory to NAVSTAR Users).
This section describes the operating modifications to the Apollo
2001/2101 NMC to implement Primary Oceanic/Remote Airspace
operation requirements. The Oceanic/Remote flight phase is in
addition to the currently provided En Route, Terminal, and Approach
flight phases and is used for primary navigation in oceanic and/or
remote airspaces.

Definitions

The following paragraphs define various terms that relate to the
NMC's primary oceanic/remote airspace operation.
Arm(ing)(ed): The manual entry sequence you use to instruct the
NMC to change to the oceanic/remote flight phase when the aircraft is
outside terminal airspace (30 nm from the departure or destination
waypoint) and above the Oceanic Activation Altitude. You may arm
the oceanic/remote function at any time and any altitude, provided
there are at least two waypoints in the active flight plan. You may
adjust the activation altitude. When armed, the NMC is not providing
navigation in the oceanic/remote flight phase, but is monitoring the
distance from departure (and destination) waypoint and altitude.
Active: The NMC is in an active state when it is navigating in the
oceanic/remote flight phase. This occurs when the aircraft is outside
terminal airspace and above the Oceanic Activation Altitude. The
oceanic/remote function must be armed before it can become active.
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