Order 7110.65P, Air Traffic Control, with changes

2/17/05Pilot/Controller GlossaryNNAS−(See NATIONAL AIRSPACE SYSTEM.)NAS STAGE A− The en route ATC system’s radar,computers and computer programs, controller planview displays (PVDs/Radar Scopes), input/outputdevices, and the related communications equipmentwhich are integrated to form the heart of theautomated IFR air traffic control system. Thisequipment performs Flight Data Processing (FDP)and Radar Data Processing (RDP). It interfaces withautomated terminal systems and is used in the controlof en route IFR aircraft.(Refer to AIM.)NATIONAL AIRSPACE SYSTEM− The commonnetwork of U.S. airspace; air navigation facilities,equipment and services, airports or landing areas;aeronautical charts, information and services; rules,regulations and procedures, technical information,and manpower and material. Included are systemcomponents shared jointly with the military.NATIONAL BEACON CODE ALLOCATIONPLAN AIRSPACE− Airspace over United Statesterritory located within the North American continentbetween Canada and Mexico, including adjacentterritorial waters outward to about boundaries ofoceanic control areas (CTA)/Flight Information Regions(FIR).(See FLIGHT INFORMATION REGION.)NATIONAL FLIGHT DATA CENTER− A facility inWashington D.C., established by FAA to operate acentral aeronautical information service for thecollection, validation, and dissemination of aeronauticaldata in support of the activities of government,industry, and the aviation community. The informationis published in the National Flight Data Digest.(See NATIONAL FLIGHT DATA DIGEST.)NATIONAL FLIGHT DATA DIGEST− A daily(except weekends and Federal holidays) publicationof flight information appropriate to aeronauticalcharts, aeronautical publications, Notices to Airmen,or other media serving the purpose of providingoperational flight data essential to safe and efficientaircraft operations.NATIONAL SEARCH AND RESCUE PLAN− Aninteragency agreement which provides for the effectiveutilization of all available facilities in all types ofsearch and rescue missions.NAVAID−(See NAVIGATIONAL AID.)NAVAID CLASSES− VOR, VORTAC, and TACANaids are classed according to their operational use.The three classes of NAVAIDs are:a. T− Terminal.b. L− Low altitude.c. H− High altitude.Note: The normal service range for T, L, and H classaids is found in the AIM. Certain operationalrequirements make it necessary to use some ofthese aids at greater service ranges thanspecified. Extended range is made possiblethrough flight inspection determinations. Someaids also have lesser service range due to location,terrain, frequency protection, etc. Restrictions toservice range are listed in Airport/FacilityDirectory.NAVIGABLE AIRSPACE− Airspace at and abovethe minimum flight altitudes prescribed in the CFRsincluding airspace needed for safe takeoff andlanding.(Refer to 14 CFR Part 91.)NAVIGATION REFERENCE SYSTEM (NRS)−The NRS is a system of waypoints developed for usewithin the United States for flight planning andnavigation without reference to ground based navigationalaids. The NRS waypoints are located in a gridpattern along defined latitude and longitude lines.The initial use of the NRS will be in the high altitudeenvironment in conjunction with the High AltitudeRedesign initiative. The NRS waypoints are intendedfor use by aircraft capable of point−to−point navigation.NAVIGATIONAL AID− Any visual or electronicdevice airborne or on the surface which providespoint-to-point guidance information or position datato aircraft in flight.(See AIR NAVIGATION FACILITY.)NBCAP AIRSPACE−(See NATIONAL BEACON CODE ALLOCATIONPLAN AIRSPACE.)PCG N−1