Pilot/Controller Glossary 

10/5/23 

NORTH AMERICAN ROUTE

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 A numerically coded route preplanned over existing airway and route systems 

to and from specific coastal fixes serving the North Atlantic. North American Routes consist of the following: 

a. 

Common Route/Portion. That segment of a North American Route between the inland navigation facility 

and the coastal fix. 

b. 

Noncommon Route/Portion. That segment of a North American Route between the inland navigation 

facility and a designated North American terminal. 

c. 

Inland Navigation Facility. A navigation aid on a North American Route at which the common route and/or 

the noncommon route begins or ends. 

d. 

Coastal Fix. A navigation aid or intersection where an aircraft transitions between the domestic route 

structure and the oceanic route structure. 
NORTH AMERICAN ROUTE PROGRAM (NRP)

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 The NRP is a set of rules and procedures which are 

designed to increase the flexibility of user flight planning within published guidelines. 
NORTH ATLANTIC HIGH LEVEL AIRSPACE (NAT HLA)

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 That volume of airspace (as defined in ICAO 

Document 7030) between FL 285 and FL 420 within the Oceanic Control Areas of Bodo Oceanic, Gander 

Oceanic, New York Oceanic East, Reykjavik, Santa Maria, and Shanwick, excluding the Shannon and Brest 

Ocean Transition Areas. ICAO Doc 007 

North Atlantic Operations and Airspace Manual

 provides detailed 

information on related aircraft and operational requirements. 
NORTH PACIFIC

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An organized route system between the Alaskan west coast and Japan. 

NOT STANDARD

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Varying from what is expected or published. For use in NOTAMs only. 

NOT STD

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(See NOT STANDARD.) 

NOTAM

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(See NOTICE TO AIR MISSIONS.) 

NOTAM [ICAO]

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 A notice containing information concerning the establishment, condition or change in any 

aeronautical facility, service, procedure or hazard, the timely knowledge of which is essential to personnel 

concerned with flight operations. 

a. 

I Distribution

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 Distribution by means of telecommunication. 

b. 

II Distribution

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 Distribution by means other than telecommunications. 

NOTICE TO AIR MISSIONS (NOTAM)

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 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. 

a. 

NOTAM (D)

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A NOTAM given (in addition to local dissemination) distant dissemination beyond the area 

of responsibility of the Flight Service Station. These NOTAMs will be stored and available until canceled. 

b. 

FDC NOTAM

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A NOTAM regulatory in nature, transmitted by USNOF and given system wide 

dissemination. 

(See ICAO term NOTAM.) 

NRR

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(See NON

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RESTRICTIVE ROUTING.) 

NRS

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(See NAVIGATION REFERENCE SYSTEM.) 

NUMEROUS TARGETS VICINITY (LOCATION)

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A traffic advisory issued by ATC to advise pilots that 

targets on the radar scope are too numerous to issue individually. 

(See TRAFFIC ADVISORIES.) 

PCG N

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