Volume 3 GENERAL TECHNICAL ADMINISTRATION
chapter 26 AVIATION WEATHER REGULATORY REQUIREMENTS
Section 6 Notices to Airmen
3-2155 GENERAL. Notices to Airmen (NOTAM) is the means of communicating
aeronautical information (AI) regarding temporary or unanticipated changes to
components or hazards in aviation. NOTAMs remain in effect until the hazard
has been corrected or the appropriate charts are amended to reflect the change.
The facility that initiated the NOTAM will generally submit the NOTAM for publishing
90 days after its initial posting. Certificate holders must provide NOTAMs to
flightcrews, dispatchers, and operational control personnel for domestic and
international operations in airspace covered by NOTAM systems. Legacy U.S. NOTAMs
may be edited into final form (without changing the content) by the United States
NOTAM Office (USNOF) and distributed through the U.S. NOTAM System (USNS). Digital
NOTAMs automatically enter the USNS through the Federal NOTAM System (FNS).
As of November 2013, 190 airports are using FNS, as are the Technical Operation
Command Centers (OCCs), and several Tower Light Operators.
3-2156 SCOPE. The information contained in this section applies to
principal operations inspectors (POI) and aviation safety inspectors (ASI) with oversight
responsibility of certificate holders and program managers who conduct operations in accordance with
Title 14 of the Code of Federal Regulations (14 CFR) parts
91 subpart K
3-2157 BACKGROUND. The NOTAM system has been undergoing revision
and evolution for years. The local NOTAMs are no longer classified as such and are distributed under
the distant or D NOTAM format. Additionally, the USNS is evolving and will eventually be replaced
with the FNS, which allows for direct user input. The FNS is designed to digitize the collection,
dissemination, and storage of NOTAMs. The FNS is intended to become the single authoritative source
for NOTAM entry and dissemination to improve the efficiency, safety, and data quality of NOTAM information.
3-2158 CLASSIFICATION OF NOTAMS. The classifications of NOTAMs currently
in existence are listed below, and are described in greater detail later in this section:
· NOTAM D (for Distant distribution);
· FDC (flight data center);
· Pointer NOTAMs;
· Special Activity Airspace; and
· Military NOTAMs.
NOTE: Airspace Notices are located in the Notices To Airmen Publication NTAP, guidance is located in 3-2158 B, 1.
NOTE: Refer to the current edition of Federal Aviation Administration (FAA) Order
Notices to Airmen (NOTAM), the Aeronautical Information Manual (AIM), Chapter 5, and Notice to Airmen (NOTAM)
System for additional information on the various types of NOTAMS.
A. NOTAM D. A notice distributed by means of telecommunications 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. NOTAM D is classified by keywords which
aid in the sorting and usability of the NOTAMs. The keywords used are:
· RWY (Runway);
· TWY (Taxiway);
· APRON (Apron/Ramp);
· AD (Aerodrome);
· OBST (Obstructions);
· NAV (Navigation Aids);
· COM (Communications);
· SVC (Services);
· AIRSPACE (Airspace);
· ODP (Obstacle Departure Procedures);
· SID (Standard Instrument Departure);
· STAR (Standard Terminal Arrival Route);
· CHART (Chart);
· DATA (Data);
· IAP (Instrument Approach Procedure);
· VFP (Visual Flight Procedure);
· ROUTE (Route); and
· SPECIAL (Special).
B. FDC NOTAMS. FDC NOTAMs are normally used to disseminate safety
of flight information relating to regulatory material as well as to all Instrument
Flight Procedures (IFP). FDC NOTAM categories include interim instrument flight
rules (IFR) flight procedures, temporary flight restrictions (TFR), flight restrictions
in the proximity of the President and other parties, 14 CFR part
airport condition changes, snow conditions affecting glide slope operation, air defense emergencies, emergency flight rules,
substitute airway routes, special data, U.S. Government charting corrections, and Laser activity (refer to FAA Order
These NOTAMs are issued through the USNOF. FDC NOTAMs that are of a permanent nature are printed and distributed
via the Notices to Airmen Publication (NTAP), issued every 28 days. The NTAP is available digitally via the internet at
1) NTAP. The NTAP is divided into four parts:
a) Part one notices are provided by air traffic control (ATC) products and
publications. This part contains selected FDC NOTAMs that are expected to be in effect on the effective
date of the publication. This part is divided into three sections:
1. Section 1–Airway NOTAMs. NOTAMs that reflect airway changes falling
within an air route traffic control center’s (ARTCC) airspace.
2. Section 2–Procedural NOTAMs. NOTAMs that impact Instrument Procedures.
3. Section 3–General NOTAMs. NOTAMs that are general in nature and not tied to a
specific airport/facility (i.e., flight advisories and restrictions, open duration Special Security Instructions, and Special Flight Rules Area (SFRA)).
b) Part two notices are provided by NFDC and contain 14 CFR part
revisions to minimum en route IFR altitudes (MEA), and Changeover Points.
c) Part three, International NOTAMs, is divided into two sections:
1. Section 1–Flight Prohibitions, Potential Hostile Situations, and Foreign Notices.
2. Section 2–International Oceanic Airspace Notices.
d) Part four, Graphic Notices, compiled by ATC products and publications
from data provided by FAA service area offices and other lines of business,
contains special notices and graphics pertaining to almost every aspect of aviation,
such as military training areas, large scale sporting events, air show information,
Special Traffic Management Programs (STMPs), and airport−specific information.
This part is comprised of 6 sections including Special Military Operations,
Airport and Facility Notices, Major Sporting and Entertainment Events, Airshows,
and Special Notices.
NOTE: Refer to the current edition of FAA Advisory Circular (AC)
Temporary Flight Restrictions (TFRs/TFR), for specific guidance on all TFR.
2) Global Positioning System (GPS) Interference Testing. All
GPS interference testing NOTAMs will be reported to the USNOF by the Technical
Operations ATC Spectrum Engineering Services, Spectrum Assignment and Engineering
Services. The USNOF will format NOTAMs under the accountability “GPS” with an
affected location of the associated center:
C. Pointer NOTAMs. These NOTAMs are used to highlight or point
out another NOTAM such an FDC, TFR, or an airspace Notice that has been published.
D. Special Activity Airspace NOTAMs. These NOTAMs are issued
when Special Activity Airspace will be active outside the published schedule
times and when required by the published schedule. Pilots and other users are
still responsible to check published schedule times for Special Activity Airspace
as well as any NOTAMs for that airspace.
E. Military NOTAMs. These are NOTAMs pertaining to U.S. Military
airports and can be accessed online via the Defense Internet NOTAM Service (DINS) at
https://www.notams.faa.gov/dinsQueryWeb/. Military NOTAMs are also available
through the USNS, and can be accessed via Pilot Web at
F. Other Information. NOTAMs may also include OTHER AI that may
be beneficial to an operator classified with an “O,” or UNVERIFIED information
that may be time sensitive and classified with a “U.”
G. Operations Not Covered by NOTAMs. Operators may need to establish
procedures or systems to develop or disseminate flight safety information concerning areas not covered
by domestic or international NOTAMs, such as isolated airports or offshore operations.
3-2159 INTERNATIONAL NOTAMS. The means for transmission of international
NOTAMs differs from that used for domestic NOTAMs. International NOTAMs are
transmitted electronically to those operators who have arranged to receive them,
and they are available, on a request reply basis, for those offices with aeronautical
fix telecommunications network (AFTN) circuits. International NOTAMs are available
via Pilot Web at
3-2160 NOTAM DISTRIBUTION. NOTAMs originate at the facility generating the information (e.g. an airport).
A. Interface. There is a Web-based interface between the originating
facility and the FNS. The originating facility may also utilize the Flight Service
Station (FSS) to file the NOTAM. When a NOTAM is generated, it is entered into
the USNS database. For example, if it is entered electronically via the Web
interface it will be hosted in the FNS. If the NOTAM is entered via Flight Service
or the USNOF, it will be hosted in the legacy USNS. If the NOTAM is entered
for a U.S. Military facility, it will be hosted in the DINS. See Figure 3-111,
NOTAM Distribution System, for a diagram of the distribution system.
B. NOTAM Distribution System. Figure 3-111 depicts how a NOTAM enters the
system and gets distributed to certificate holders, pilots, dispatchers, and other operational personnel.
C. Operations Specification (OpSpec)/Management Specification (MSpec)/Letter
of Authorization (LOA) A009. OpSpec /MSpec/LOA A009, Airport Aeronautical Data; MSpec A009, Aeronautical
Data, is the means whereby a POI will approve (part
121) or authorize
an operator to use a system to disseminate NOTAM information. Prior to issuing approval or authorization, POIs must
ensure that each operator evaluates the system for accuracy and completeness of the NOTAM information provided. See
Volume 3, Chapter 18, Section 3 for
information specific to OpSpec/MSpec/LOA A009. A NOTAM dissemination system may be part of an operator’s aviation weather information system (See
Volume 3, Chapter 26, Section 2).
When NOTAMs are disseminated through an aviation weather information system, POIs must still use OpSpec A009 as the vehicle for approval/authorization.
D. Manual Requirements. POIs must ensure that operators include
policies and procedures related to acquisition, dissemination, and cancellation
of NOTAM information. Procedures should address each NOTAM source, and the method
whereby the operator ensures the required NOTAM information is available and
disseminated to pilots, dispatchers, and other operational personnel.
Figure 3-111. NOTAM Distribution System
RESERVED. 3-2161 through 3-2165.