National Airspace System

The normal radius of the Class C outer area will be 20 NM. This is the area where separation is provided after two-way communication is established. You must contact ATC before entering the 10 NM Class C airspace depicted on the Sectional Chart.

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.

The wire-rich environment is typically below 1,000 feet. Not all wires are marked and they can be nearly invisible when viewed from different angles. Remote pilots must exercise vigilance when operating near helicopters, moored balloons and other places where wires are frequently present.

The purple flag over Lake Drummond is indicating a VFR checkpoint which is used for aircraft to better identify their position to air traffic control or other aircraft in the area. You should expect an increased amount of converging air traffic in and around VFR checkpoints.

Cooperstown Airport depicts one runway; Runway 13 means the aircraft will be headed 130 degrees upon landing. "Left downwind" means the aircraft is currently to the left side, heading opposite and midway of the landing runway. This would place the aircraft east of the landing runway.

To measure the latitude and longitude, begin with looking for the hatched black lines with degree numbers on them. Just southeast of ECG there is the 36 degrees latitude line (running east/west) and the 76 degrees longitude line (running north/south). Count the ticks on the latitude line which is approximately 16 - these are the number of minutes yielding N 36 degrees 16' (north because the airport is north of the equator). Next, count the ticks west of the longitude line. There are approximately 10, therefore this is W 76 degrees 10' (west because the airport is west of the prime meridian).