Aeronautical Terms beginning with N

NA

Not Authorized

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NACO

National Aeronautical Charting Office

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NAS

National Airspace System

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NASA

National Aeronautics and Space Administration

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NASSI

National Airspace System Status Information

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NATCA

National Air Traffic Controllers Association

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NAVAID

Navigational Aid

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NCAR

National Center for Atmospheric Research

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NDB

Nondirectional Beacon

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NextGen

Next Generation Air Transportation System

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NFDC

National Flight Data Center

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NFPO

National Flight Procedures Office

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NGA

National Geospatial Intelligence Agency

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NIMA

National Imagery and Mapping Agency

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NM

Nautical Mile

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NMAC

Near Mid-Air Collision

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NNEW

Next Generation Network-Enabled

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NO A/G

No Air-to-Ground Communication

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NOAA

National Oceanic and Atmospheric Administration

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Non-RNAV DP

A DP whose ground track is based on ground-based NAVAIDS and/or dead reckoning navigation.

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NOPAC

North Pacific

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NOTAM

Notice To Airmen

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NPA

Nonprecision Approach

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NPRM

Notice of Proposed Rulemaking

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NRP

National Route Program

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NRR

Non-Restrictive Routing

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NTAP

Notice To Airmen Publication

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NTSB

National Transportation Safety Board

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NTZ

No Transgression Zone

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NVS

NAS voice switch

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NWS

National Weather Service

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