National Airspace System

The magenta shading around Jamestown airport indicates the floor of the Class E airspace starts 700 feet above the surface. The dashed area means the Class E goes all the way to the surface. No person may operate a small unmanned aircraft in Class B, Class C, or Class D airspace or within the lateral boundaries of the surface area of Class E airspace designated for an airport unless that person has prior authorization from ATC.

Within the outer magenta circle of Savannah Class C airspace, there is a number 41 directly above the number 13. These numbers depict the floor and ceiling of the Class C airspace; the floor being 1,300 feet MSL and the ceiling being 4,100 feet MSL.

Refer to Appendix 1, Legend 1. On Figure 23, area 3, the group obstruction near the 009 degree radial has the word "stacks" below 454. The bold number (454) indicates the height of the obstruction above mean sea level.

Refer to Legend 1. Restricted areas are identified on sectional charts with an "R" followed by a number. You can find information about restricted areas on the back of the sectional chart.

The communications section of the Chart Supplement U.S. for Lincoln Airport lists 118.5 as the tower frequency and the common traffic advisory frequency (CTAF) when the tower is closed. When operating in the vicinity of an airport, remote pilots are encouraged to monitor the tower frequency or CTAF.

Effective scanning is accomplished with a series of short, regularly spaced eye movements that bring successive areas of the sky into the central visual field. Each movement should not exceed 10 degrees, and each area should be observed for at least one second to enable detection.