Aeronautical Terms beginning with N

N90

New York TRACON

NAS

National Airspace System. The common network of U.S. airspace; air navigation facilities, equipment and services, airports or landing areas.

NAVAID

Navigational Aid. Any visual or electronic device, airborne or on the surface, which provides point-to-point guidance information or position data to aircraft in flight.

NM

Nautical Mile. International unit equal to 6076.115 feet (1852 meters).

NOTAM

Notice to Airmen. A notice containing information (not known sufficiently in advance to publicize by other means) concerning the establishment, condition, or change in any component (facility, service, or procedure of, or hazard in the National Airspace System) the timely knowledge of which is essential to personnel concerned with flight operations.

NRP

North American Route Program. The NRP is a set of rules and procedures which are designed to increase the flexibility of user flight planning within published guidelines.