|
Contraction
|
Definition
|
Usage
|
|
N
|
north or northern latitude
|
ICAO
|
|
N/A
|
not applicable
|
GEN
|
|
NA
|
not authorized
|
GEN
|
|
NAAS
|
Naval Auxiliary Air Station
|
GEN
|
|
NAATS
|
National Association of Air Traffic Control Specialists
|
GEN
|
|
NAB
|
not above
|
GEN
|
|
NACOS
|
national communications schedule
|
GEN
|
|
NADIN
|
National Airspace Data Interchange Network
|
GEN
|
|
NAF
|
Naval Air Facility
|
GEN
|
|
NAFEC
|
National Aviation Facilities Experimental Center
|
GEN
|
|
NANAC
|
National Aircraft Noise Abatement Council
|
GEN
|
|
NAP
|
not at present
|
GEN
|
|
NAPRS
|
National Airspace Performance Reporting System
|
ATC
|
|
NAR
|
North American Route
|
GEN
|
|
NAR
|
not according to routine
|
GEN
|
|
NAS
|
National Airspace System
|
GEN
|
|
NAS
|
Naval Air Station
|
GEN
|
|
NASA
|
National Aeronautics and Space Administration
|
GEN
|
|
NASC
|
National AIS system centre
|
ICAO
|
|
NASP
|
National Airport System Plan
|
GEN
|
|
NAT
|
North Atlantic
|
GEN
|
|
NAT
|
not ARTS tracked
|
ATC
|
|
NATCA
|
National Air Traffic Controllers Association
|
ATC
|
|
NATCAS
|
Navigation, ATC, and Collision Avoidance System
|
GEN
|
|
NATCC
|
National Air Transport Coordinating Committee
|
GEN
|
|
NATCOM
|
National Communications Center
|
GEN
|
|
NATL
|
national
|
GEN
|
|
NATR
|
no additional traffic reported
|
ATC
|
|
NATS
|
noise abatement test system
|
GEN
|
|
NAV
|
navigation
|
GEN
|
|
NAVAID
|
navigational aid
|
GEN
|
|
NAVLO
|
Navy Liaison Officer
|
GEN
|
|
NAVREP
|
Navy Representative to the FAA
|
GEN
|
|
NB
|
New Brunswick
|
NWS
|
|
NB
|
northbound
|
ICAO
|
|
NBCAP
|
national beacon code allocation plan
|
GEN
|
|
NBFR
|
not before
|
ICAO
|
|
NBND
|
northbound
|
GEN
|
|
NBRHD
|
neighborhood
|
GEN
|
|
NC
|
no change
|
GEN
|
|
NCDC
|
National Climatic Data Center
|
GEN
|
|
NCE
|
no change in estimates
|
ATC
|
|
NCS
|
National Communications System
|
GEN
|
|
NCWX
|
no change in weather
|
NWS
|
|
NDB
|
nondirectional radio beacon
|
GEN
|
|
NDB/DME
|
NDB and DME (collocated)
|
GEN
|
|
NDBLO
|
not to descend below
|
ATC
|
|
NDE
|
no delay expected
|
ATC
|
|
NE
|
north-east
|
ICAO
|
|
NEB
|
north-eastbound
|
ICAO
|
|
NEC
|
necessary
|
GEN
|
|
NEF
|
no further clearance required
|
ATC
|
|
NEG
|
negative
|
GEN
|
|
NELY
|
northeasterly (weather reports only)
|
NWS
|
|
NERN
|
northeastern
|
NWS
|
|
NESS
|
national environmental satellite service
|
GEN
|
|
NETR
|
no essential traffic reported
|
ATC
|
|
NEW ENG
|
New England
|
NWS
|
|
NFDC
|
National Flight Data Center
|
GEN
|
|
NFDD
|
National Flight Data Digest
|
GEN
|
|
NFLD
|
Newfoundland
|
NWS
|
|
NFQ
|
night frequency
|
GEN
|
|
NFT
|
no filing time
|
GEN
|
|
NFU
|
not for us
|
GEN
|
|
NG
|
National Guard
|
GEN
|
|
NGT
|
night
|
NWS
|
|
NHD
|
not heard
|
ATC
|
|
NICS
|
National Airspace System Interfacility Communications System
|
GEN
|
|
NIL
|
none
|
GEN
|
|
NIL
|
unable to transmit
|
GEN
|
|
NIS
|
not in system
|
GEN
|
|
NL
|
no layers
|
NWS
|
|
NLT
|
not later than
|
GEN
|
|
NM
|
nautical mile
|
GEN
|
|
NMBR
|
number
|
NWS
|
|
NMC
|
National Meteorological Center
|
GEN
|
|
NML
|
normal
|
GEN
|
|
NMN
|
no middle name
|
GEN
|
|
NMR
|
nautical mile radius
|
GEN
|
|
NMRS
|
numerous
|
GEN
|
|
NNE
|
north-north east
|
ICAO
|
|
NNERN
|
north-northeastern (weather reports only)
|
NWS
|
|
NNEWD
|
north-northeastward (weather reports only)
|
NWS
|
|
NNW
|
north-north west
|
ICAO
|
|
NNWRN
|
north-northwestern (weather reports only)
|
NWS
|
|
NNWWD
|
north-westward (weather reports only)
|
NWS
|
|
NO
|
No (negative)
|
ICAO
|
|
NO
|
not available
|
METAR
|
|
NOAA
|
National Oceanic and Atmospheric Administration
|
GEN
|
|
NOAC
|
no action necessary
|
GEN
|
|
NOF
|
NOTAM Office
|
GEN
|
|
NOFIN
|
no further information
|
GEN
|
|
NOHOL
|
not holding
|
ATC
|
|
NOIFN
|
no information
|
GEN
|
|
NOMAD
|
Naval Oceanographic Meteorological Automatic Device
|
GEN
|
|
NONEG
|
negative replies not required
|
GEN
|
|
NOPAC
|
North Pacific
|
ATC
|
|
NOPAR
|
do not pass to Air Defense radar
|
ATC
|
|
NOPT
|
no procedure turn required
|
GEN
|
|
NORAC
|
no radio contact
|
ATC
|
|
NORAD
|
North American Aerospace Defense Command
|
GEN
|
|
NORDO
|
no radio
|
GEN
|
|
NOREC
|
no record
|
GEN
|
|
NOREP
|
no report
|
GEN
|
|
NORIV
|
no arrival report
|
ATC
|
|
NORPI
|
no pilot balloon observation will be filed next collection unless
weather changes significantly
|
NWS
|
|
NORR
|
no reply received
|
GEN
|
|
NORST
|
no restrictions
|
GEN
|
|
NOS
|
National Ocean Service
|
GEN
|
|
NOSI
|
now simultaneous
|
GEN
|
|
NOSIG
|
no significant change
|
ICAO
|
|
NOSPL
|
no special observations taken (weather reports only)
|
NWS
|
|
NOSUM
|
NOTAM Summary
|
GEN
|
|
NOTAM
|
Notice to Airmen
|
GEN
|
|
NOZ
|
normal operating zone
|
GEN
|
|
NOZ
|
Normal operating zone
|
ICAO
|
|
NPI
|
nonprecision instrument
|
GEN
|
|
NPRL
|
no parallel traffic
|
ATC
|
|
NPRM
|
Notice of Proposed Rulemaking
|
ATC
|
|
NPRS
|
nonpersistent
|
NWS
|
|
NR
|
near
|
GEN
|
|
NR
|
number
|
GEN
|
|
NRAB
|
Naval Reserve Air Base
|
GEN
|
|
NRD
|
no record of destination
|
GEN
|
|
NRH
|
no reply heard
|
ICAO
|
|
NRP
|
North American route program
|
ATC
|
|
NRV
|
nonrevenue
|
GEN
|
|
NRW
|
narrow
|
GEN
|
|
NS
|
nimbostratus
|
NWS
|
|
NS
|
Nova Scotia
|
NWS
|
|
NSC
|
no significant cloud
|
ICAO
|
|
NSC
|
Nonstandard C/A Code
|
ATC
|
|
NSCSWD
|
no small craft or storm warning are being displayed
|
NWS
|
|
NSP
|
nonstandard holding pattern
|
GEN
|
|
NSSFC
|
National Severe Storm Forecast Center
|
GEN
|
|
NSTP
|
nonstop
|
GEN
|
|
NSW
|
no significant weather
|
METAR
|
|
NTAP
|
National Track Analysis Program
|
ATC
|
|
NTAP
|
Notices To Airmen Publication
|
ATC
|
|
NTE
|
not to exceed
|
GEN
|
|
NTFND
|
no trouble found
|
GEN
|
|
NTFY
|
notify
|
GEN
|
|
NTL
|
National
|
ICAO
|
|
NTO
|
name to
|
GEN
|
|
NTRP
|