National Airspace System

The thick blue lines on the sectional chart indicate the boundaries of the overlying Class B airspace. Within each segment, the floor and ceiling are denoted by one number over a second number or the letters SFC. The floor of the Class B airspace is 4,000 feet MSL.

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).

On-airport areas that are used for certain cargo functions, including screening, must be a SIDA. A SIDA is that portion of an airport within the United States, specified in the security program, in which individuals must display an airport-issued or approved ID and carry out other security measures.

No person may operate an sUA 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.

Refer to Appendix 1, Legend 1. The routes established between VORs are depicted by blue-tinted bands showing the airway number following the letter "V," and are called "Victor airways." Remote pilots should exercise vigilance in looking for other aircraft when operating near these high density areas.

When a manned aircraft is approaching to land at an airport in Class G airspace without an operating control tower, each pilot of an airplane will make all turns to the left unless the airport displays approved light signals or visual markings indicating that turns should be made to the right (which will be detailed in the Chart Supplement U.S. Answer (A) is incorrect because the traffic pattern altitude will vary for each airport and aircraft; however, all turns should be to the left unless otherwise indicated. Answer (C) is incorrect because the traffic pattern altitude will vary for each airport and aircraft; however, all turns should be to the left unless otherwise indicated.