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1/2 inches. Area Chart scales are 1 inch = 95.9
NM/1:7,000,000. The size is 52 x 40-1/2 inches.
All charts shipped unfolded. The charts are revised
every 56 days.
• North Atlantic Route Chart: Designed for FAA
controllers to monitor transatlantic flights, this
five-color chart shows oceanic control areas,
coastal navigation aids, oceanic reporting points,
and NAVAID geographic coordinates. The full size
chart scale is 1 inch = 113.1 NM/1:8,250,000,
shipped flat only. The half size chart scale is 1 inch
= 150.8 NM/1:11,000,000. The size is 29-3/4 x 20-
1/2 inches, shipped folded to 5 x 10 inches only,
and is revised every 56 weeks.
• FAA Aeronautical Chart User’s Guide: This
publication is designed to be used as a teaching
aid and reference document. It describes the substantial amount of information provided on the
FAA’s aeronautical charts and publications. It
includes explanations and illustrations of chart
terms and symbols organized by chart type. It is
available online at:
http://www.naco.faa.gov/index.asp?xml=naco/on
line/aero_guide
• Airport/Facility Directory (A/FD)
Digital products include:
• The NAVAID Digital Data File: This file contains
a current listing of NAVAIDs that are compatible
with the NAS. Updated every 56 days, the file
contains all NAVAIDs including ILS and its components, in the U.S., Puerto Rico, and the Virgin
Islands plus bordering facilities in Canada,
Mexico, and the Atlantic and Pacific areas. The
file is available by subscription only, on a 3.5-
inch, 1.4 megabyte diskette.
• The Digital Obstacle File: This file describes all
obstacles of interest to aviation users in the U.S.,
with limited coverage of the Pacific, Caribbean,
Canada, and Mexico. The obstacles are assigned
unique numerical identifiers, accuracy codes, and
listed in order of ascending latitude within each
state or area. The file is updated every 56 days, and
is available on 3.5-inch, 1.4 megabyte diskettes.
• The Digital Aeronautical Chart Supplement
(DACS): The DACS is a subset of the data provided
to FAA controllers every 56 days. It reflects digitally what is shown on the en route high and low
charts. The DACS is designed to be used with aeronautical charts for flight planning purposes only. It
should not be used as a substitute for a chart. The
DACS is available on two 3.5-inch diskettes, compressed format. The supplement is divided into the
following nine individual sections:
Section 1: High Altitude Airways, Conterminous U.S.
Section 2: Low Altitude Airways, Conterminous U.S.
Section 3: Selected Instrument Approach Procedure
NAVAID and Fix Data
Section 4: Military Training Routes
Section 5: Alaska, Hawaii, Puerto Rico, Bahamas, and
Selected Oceanic Routes
Section 6: STARs, Standard Terminal Arrivals
Section 7: DPs, Instrument Departure Procedures
Section 8: Preferred IFR Routes (low and high altitude)
Section 9: Air Route and Airport Surveillance Radar
Facilities
NOTICE TO AIRMEN
Since the NAS is continually evolving, Notices to
Airmen (NOTAM) provide the most current essential
flight operation information available, not known sufficiently in advance to publicize in the most recent
aeronautical charts or A/FD. NOTAMs provide information on airports and changes that affect the NAS that
are time critical and in particular are of concern to IFR
operations. Published FAA domestic/international
NOTAMs are available by subscription and on the
Internet. Each NOTAM is classified as a NOTAM (D),
a NOTAM (L), or an FDC NOTAM. [Figure 1-21]
1-30
A NOTAM (D) or distant NOTAM is given dissemination
beyond the area of responsibility of a Flight Service
Station (AFSS/FSS). Information is attached to hourly
weather reports and is available at AFSSs/FSSs.
AFSSs/FSSs accept NOTAMs from the following personnel in their area of responsibility: Airport Manager,
Airways Facility SMO, Flight Inspection, and Air Traffic.
They are disseminated for all navigational facilities that
are part of the U.S. NAS, all public use airports, seaplane
bases, and heliports listed in the A/FD. The complete
NOTAM (D) file is maintained in a computer database at
the National Weather Message Switching Center
(WMSC) in Atlanta, Georgia. Most air traffic facilities,
primarily AFSSs/FSSs, have access to the entire database
of NOTAM (D)s, which remain available for the duration
of their validity, or until published.
A NOTAM (L) or local NOTAM requires dissemination
locally, but does not qualify as NOTAM (D) information.
These NOTAMs usually originate with the Airport
　
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