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12.6.2 Runway threshold elevations are not shown.
Chapter 13 Aerodrome/Heliport Chart − ICAO
13.6.1.d
Surface type for
heliports.
The U.S. does not show “type of surface for heliports.”
13.6.2
Elevated
helidecks, etc.
The U.S. does not show “surface level, elevated, or helidecks.”
Chapter 14 Aerodrome Ground Movement Chart − ICAO
14.6.1 c) The U.S. does not depict geographic positions of aircraft stands.
14.6.1 f) The U.S. does not depict taxiway centerline points.
Appendix 2 ICAO Chart Symbols
No. 21 Tidal flats are shown in brown stipple over the blue open water tint.
No. 45 Rocks awash are shown by a six−armed symbol as adopted by the International Hydrographic
Bureau.
No. 54, 61 Spaces between sides of bridge and road or railroad symbols are filled solid.
No. 70 Oil or gas fields are shown with an oil well derrick symbol.
No. 77 Ruins are shown by a solid square, properly annotated.
31 JULY 08
AIP
United States of America
GEN 1.7−25
15 MAR 07
Federal Aviation Administration Nineteenth Edition
No. 94 The runway surface indicator (letter H) and the lighting indicator (letter L) are not normally used on
high altitude Radio Navigation Charts. Only those airports with a minimum of 5,000 feet
hard−surfaced runways are shown.
The letter H is not used on low altitude Radio Navigation Charts. All airports depicted have
hard−surfaced runways, excepting that where the letter ‘‘S’’ follows the runway length, the runway
surface is soft.
On Visual Navigation Charts of the 1:500 000 scale, a miniature runway layout depiction indicates
airports with hard−surfaced runways at least 1,500 feet long.
No. 110 Aerodrome traffic zones are termed ‘‘SURFACE AREAS’’ in U.S. usage. These are all of standard
dimensions. Limits are not shown, but airports at which SURFACE AREAS have been established
are indicated by a color−coded airport symbol.
No. 113 Limits of advisory areas are shown on Radio Navigation Charts with a crenellated line. This
depiction is indicated in the legend as the border of an Air Route Traffic Control Center (ARTCC).
No. 116 The nomenclature ‘‘non−compulsory’’ is used instead of ‘‘on request’’ for appropriate position
reporting points.
No. 127 Isogonic lines are shown on Radio Navigation Charts only as short sections of continuous lines
extending inward from the neat lines.
*Indicates ICAO Recommended Practice.
31 JULY 08
AIP
United States of America
GEN 1.7−26
15 MAR 07
Nineteenth Edition Federal Aviation Administration
ANNEX 5 − UNITS OF MEASUREMENT TO BE USED IN AIR−GROUND COMMUNICATIONS
General Statement: Most of the individual SI quantities and measurement units listed in the Annex are not commonly
used in routine international air operations. Although most U.S. national standards and practices do not specifically
utilize the SI units, the SI units of measurement are acceptable and not prohibited from use by U.S. regulations. Under
the present operational practices, these differences are not significant and are identified in U.S. Aeronautical
Information and Technical Publications. In accordance with Article 38 of the Convention, the U.S. wishes to file the
enclosed Notice of Differences to Annex 5, Fourth Edition, as amended by Amendment 13. Only those differences
recognized as necessary for the safety or regularity of international air navigation and required for day−to−day
operations in U.S. airspace are listed separately in this notification. In addition, we do not support the establishment of
dates for planning purpose for termination of the use of bar, knot, nautical mile, and foot. (Chapter 4, Table 4−1) Until
sufficient operational analysis identifies and resolves the safety issues, the establishment of termination dates for use of
the bar, knot, nautical mile, and foot is unacceptable.
Reference: Table 3−4, Chapter 3, Annex 5, Fourth Edition, as Amended by Amendment 13.
Chapter 3.3 (Table 3−4)
Ref. No. Quantity Unit (SI) Differences as of 5 January 1988
1.4 distance (short) meter foot
1.12 runway length meter foot
1.13 runway visual range meter foot
1.15 time hour and minute,
the day of 24
hours beginning
at midnight UTC
Time may be given in local time
1.16 visibility kilometer statute mile and fraction
2.12 mass (weight) kilogram pound (lb)
3.2 altimeter setting hectopascal inches of mercury
6.7 temperature °C C° except Fahrenheit used for surface air
and dew point temperature
　
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