AIM
12/2/21
testing NOTAMS are published and testing is actually
occurring, ATC will advise pilots requesting or
cleared for a GPS or RNAV (GPS) approach, that
GPS may not be available and request the pilot’s
intentions. TBL 5
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1
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1 lists an example of a GPS
testing NOTAM.
g. NOTAM Classification.
NOTAM information
is classified as Domestic NOTAMs (NOTAM D),
Flight Data Center (FDC) NOTAMs, International
NOTAMs, or Military NOTAMs.
1. NOTAM (D)
information is disseminated for
all navigational facilities that are part of the National
Airspace System (NAS), all public use aerodromes,
seaplane bases, and heliports listed in the Chart
Supplement. U.S. NOTAM (D) information includes
taxiway closures, personnel and equipment near or
crossing runways, and airport lighting aids that do not
affect instrument approach criteria (i.e., VGSI). All
NOTAM Ds must have one of the keywords listed in
TBL 5
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1
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1, as the first part of the text after the
location identifier. These keywords categorize
NOTAM Ds by subject, for example, 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 are issued when it is
necessary to disseminate regulatory information.
FDC NOTAMs include:
(a)
Amendments to published IAPs and other
current aeronautical charts.
(b)
Temporary Flight Restrictions (TFR)
restrict entrance to a certain airspace at a certain time,
however, some TFRs provide relief if ATC
permission is given to enter the area when requested.
Online preflight resources for TFRs provide graphics
and plain language interpretations.
(c)
High barometric pressure warning.
(d)
Laser light activity.
(e)
ADS
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B, TIS
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B, and FIS
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B service
availability.
(f)
Satellite
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based systems such as WAAS or
GPS.
(g)
Special Notices.
3.
International NOTAMs are published in
ICAO format per Annex 15 and distributed to
multiple countries.
(a)
International NOTAMs issued by the U.S.
NOTAM Office use Series A followed by 4
sequential numbers, a slant “/” and a 2
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digit number
representing the year the NOTAM was issued.
International NOTAMs basically 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. The U.S. International NOTAM will be linked to
the appropriate U.S. Domestic NOTAM when
possible.
(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.”
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1
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4
Preflight