navigation acronyms, abbreviations and definitions - International ...

NONAV no navigation (ATC call/squawk in event of loss of nav capability)
NOR notice of readiness (shipping)
NORDO no radio (ATC squawk)
NOS National Ocean Service (US)
NOSC Naval Ocean Systems Center (US)
NOSIG no significant change (met)
NOTAM Notice to Airmen
NP Naval Publication
NP non-periodic
NPA non-precision approach
A standard instrument approach in which no electronic glidepath/slope
is provided.
NPA Notice of Proposed Amendment (EU JAA)
NPEF National PNT Systems Engineering Forum (US)
NPL National Physical Laboratory (The UK NMI))
NPPL National Private Pilot’s Licence
(A) = aircraft, (B) = balloons, (H) = helicopters, A(M) = microlights.
NPR noise preferential route (ATC)
NPRM Notice of Proposed Rulemaking (FAA, FCC etc)
NPTG National Public Transport Gazetteer (UK)
NPV net present value
NPV non-precision approach with vertical guidance
NRC Navigation Research Centre (NUAA)
NRL Naval Research Laboratory (US)
NRNP Norwegian Radionavigation Plan (first edition issued 2003)
NRP National Route Program (US ATC)
NRS Navigation-Related Communication Services (GALILEO)
NRT near real-time
NRT net registered tonnage
NRTK Network Real-Time Kinematic
NRTS National Roads Telecommunications Services
ns nanosecond (1/1,000,000,000 of a second)
NS Naval Station (US)
Ns nimbostratus cloud
NSA National Security Agency (US)
NSA National Supervisory Authority
NSA CC National Supervisory Authority Coordination Committee (EU SES)
NSAP Network Service Access Point (ATN)
NSC National Security Council (US)
NSC NATO Shipping Centre
NSC no significant cloud
NSC non-standard C/A code (GPS) (for verification etc)
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March 2012