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AIM 

6/17/21 

APRON (ramp), RWY (runway), SVC (Services), 
etc. There are several types of NOTAM Ds: 

(a) 

Aerodrome activity and conditions, to 

include field conditions. 

(b) 

Airspace to include CARF, SUA, and 

general airspace activity like UAS or pyrotechnics. 

(c) 

Visual and radio navigational aids. 

(d) 

Communication and services. 

(e) 

Pointer NOTAMs. NOTAMs issued to 

point to additional aeronautical information. When 
pointing to another NOTAM, the keyword in the 
pointer NOTAM must match the keyword in the 
original NOTAM. Pointer NOTAMs should be issued 
for, but are not limited to, TFRs, Airshows, 
Temporary SUA, major NAS system interruptions, 
etc. 

2.  FDC NOTAMs. 

On those occasions when it 

becomes necessary to disseminate information that is 
regulatory in nature, an FDC NOTAM is issued. FDC 
NOTAMs include NOTAMs such as: 

(a) 

Amendments to published IAPs and other 

current aeronautical charts. 

(b) 

Temporary Flight Restrictions (TFR). 

Pilots should read NOTAMs in their entirety as some 
TFRs may allow pilots to fly through the flight 
restriction should they request permission to do so 
and subsequently receive it. Pilots are encouraged to 
use online preflight resources as they provide 
graphics and plain language interpretations for TFRs. 

(c) 

High barometric pressure warning. 

(d) 

Laser light activity. 

(e) 

ADS

B, TIS

B, and FIS

B service 

availability. 

(f) 

Satellite

based systems such as WAAS or 

GPS. 

(g) 

Special Notices. 

3.  International NOTAMs. 

(a) 

Distributed to more than one country, they 

are published in ICAO format under guidelines 
established in Annex 15. International NOTAMs 
issued by the U.S. NOTAM Office use Series A 
followed by 4 sequential numbers, a slant “/” and a 
2

digit  number representing the year the NOTAM 

was issued. For the most part, International NOTAMs 
duplicate data found in a U.S. Domestic NOTAM. 

(b) 

Not every topic of a U.S. Domestic 

NOTAM is issued as an International NOTAM by the 
U.S. When possible, the U.S. International NOTAM 
will be linked to the appropriate U.S. Domestic 
NOTAM. 

(c) 

International NOTAMs received by the 

FAA from other countries are stored in the U.S. 
NOTAM System. 

(d) 

The International NOTAM format in-

cludes a “Q” Line that can be easily read/parsed by a 
computer and allows the NOTAM to be displayed 
digitally. 

(1) 

Field A:  ICAO location identifier or 

FIR affected by the NOTAM. 

(2) 

Field B: Start of Validity. 

(3) 

Field C: End of Validity (both in 

[Year][Month][Day][Hour][Minute] format). 

(4) 

Field D: (when present) Schedule. 

(5) 

Field E: Full NOTAM description. 

(6) 

Field F: (when present) Lowest altitude, 

or “SFC.” 

(7) 

Field G: (when present) Highest 

altitude, or “UNL.” 

(e) 

For more on International format, please 

see Annex 15. 

4.  Military NOTAMs. 

NOTAMs originated 

by the U.S. Air Force, Army, Marine, or Navy, and 
pertaining to military or joint

use navigational 

aids/airports that are part of the NAS. Military 
NOTAMs are published in the International NOTAM 
format and should be reviewed by users of a military 
or joint

use facility. 

g. 

Security NOTAMS: 

1. 

U.S. Domestic Security NOTAMS are FDC 

NOTAMS that inform pilots of certain U.S. security 
activities or requirements, such as Special Security 
Instructions for aircraft operations to, from, within, or 
transitioning U.S. territorial airspace. These NO-
TAMS are found on the Federal NOTAM System 
(FNS) NOTAM Search website under the location 
designator KZZZ. 

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Preflight