Contents
How often do sectional charts expire?
The aeronautical information on Sectional Charts includes visual and radio aids to navigation, airports, controlled airspace, restricted areas, obstructions, and related data. These charts are updated every six months, most Alaska Charts annually.
Why is it important for aeronautical charts are always updated?
Aeronautical information changes rapidly, so it is important that pilots check the effective dates on each aeronautical chart and publication. To avoid danger, it is important to always use current editions and discard obsolete charts and publications.
How are control towers depicted in a VFR?
Airports with control towers are depicted with a blue circle and ones without are enclosed in a magenta circle. Airports with towers are generally in controlled airspace and the pilot would require approval to fly near that airport. Note: Airports are not always depicted in an enclosed circle.
How are airports depicted on a VFR chart?
A sample topographical color-coding based on the maximum altitude of 19,633ft. On a VFR chart, airports are depicted primarily in two ways- Airports with control towers and Airports without control towers. Airports with control towers are depicted with a blue circle and ones without are enclosed in a magenta circle.
What is the radio frequency for an airport?
This is an airport with a control tower as the symbol is blue in color. The Control Tower (CT) Frequency given is 123.7. The ATIS Frequency is the radio frequency which pilots can use to inquire about the weather report. Here it is 120.15.
What is the frequency of an airport control tower?
If the airport has a control tower but the tower is closed for the night, the tower frequency usually becomes the CTAF. At nontowered airports, a unicom frequency is used. Typical unicom frequencies are 122.7, 122.72, 122.8, 122.97, 123.0. 123.05, and 123.07 MHz.