Pilot and student pilot community. Share your pilot lessons or aviation stories.



Aeronautical Charts

in Navigation

An aeronautical chart is the road map for a pilot flying under VFR. The chart provides information which allows pilots to track their position and provides available information which enhances safety. The three aeronautical charts used by VFR pilots are:


  • Sectional
  • VFR Terminal Area
  • World Aeronautical

A free catalog listing aeronautical charts and related publications including prices and instructions for ordering is available at the National Aeronautical Charting Group (NACG) web site: www.naco.faa.gov.

Sectional Charts

Sectional charts are the most common charts used by pilots today. The charts have a scale of 1:500,000 (1 inch = 6.86 nautical miles (NM) or approximately 8 statute miles (SM)) which allows for more detailed information to be included on the chart.

The charts provide an abundance of information, including airport data, navigational aids, airspace, and topography. Figure 15-1 is an excerpt from the legend of a sectional chart. By referring to the chart legend, a pilot can interpret most of the information on the chart. A pilot should also check the chart for other legend information, which includes air traffic control (ATC) frequencies and information on airspace. These charts are revised semiannually except for some areas outside the conterminous United States where they are revised annually.

Figure 15-1. Sectional chart and legend.

Figure 15-1. Sectional chart and legend.

VFR Terminal Area Charts

VFR terminal area charts are helpful when flying in or near Class B airspace. They have a scale of 1:250,000 (1 inch = 3.43 NM or approximately 4 SM). These charts provide a more detailed display of topographical information and are revised semiannually, except for several Alaskan and Caribbean charts. [Figure 15-2]

Figure 15-2. VFR terminal area chart and legend.

Figure 15-2. VFR terminal area chart and legend.

World Aeronautical Charts

World aeronautical charts are designed to provide a standard series of aeronautical charts, covering land areas of the world, at a size and scale convenient for navigation by moderate speed aircraft. They are produced at a scale of 1:1,000,000 (1 inch = 13.7 NM or approximately 16 SM). These charts are similar to sectional charts and the symbols are the same except there is less detail due to the smaller scale. [Figure 15-3]

These charts are revised annually except several Alaskan charts and the Mexican/Caribbean charts which are revised every 2 years.

Figure 15-3. World aeronautical chart.

Figure 15-3. World aeronautical chart.

51+CmORESYL._SX373_BO1,204,203,200_Learn more about flight navigation with the Aviator’s Guide to Navigation. One of the best books on the market to refine your navigation skills. The Fourth Edition of this comprehensive guide explains the full range of air navigation innovations, covering all the new technologies and tools that have emerged in the past ten years.

 

Comments on this entry are closed.

Previous post:

Next post: