Aeronautical Terms beginning with N

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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NAVAID

Navigational Aid

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NAVCEN

Coast Guard Navigation Center

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NCWF

National Convective Weather Forecast

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NDB

Nondirectional Radio Beacon

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NEXRAD

Next Generation Weather Radar

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NFDC

National Flight Data Center

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NGA

National Geospatial-Intelligence Agency

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NM

Nautical Mile

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NMAC

Near Midair Collision

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NOAA

National Oceanic and Atmospheric Administration

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NOPAC

North Pacific

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NoPT

No Procedure Turn Required

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NOTAM

Notice to Airmen

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NPA

Nonprecision Approach

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NRS

Navigation Reference System

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NSA

National Security Area

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NSW

No Significant Weather

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NTAP

Notices to Airmen Publication

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NTSB

National Transportation Safety Board

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NTZ

No Transgression Zone

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NWS

National Weather Service

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