National Airspace System

The base of the class B airspace directly over Hicks airport is 4,000 feet MSL as indicated by the blue 110/40. Class B airspace is always shown on sectional charts in mean sea level (MSL).

The "47" at area 4 is the line of latitude (also called parallels) is north and south from the equator.

The AIM is the official guide to basic flight information and ATC procedures. Answer (B) is incorrect because the Chart Supplement U.S. contains information on airports and various other pertinent special notices essential to operating in the NAS. Answer (C) is incorrect because AC 00-2 is the Advisory Circular Checklist for the status of all other FAA publications.

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.

Refer to Legend 1. The town of Hinton is north of Sioux City airport. Winnebago is south of Sioux City airport. This route is through the Class D airspace, depicted with the dashed blue line. You will need to contact ATC before conducting this flight.

No person may operate a small unmanned aircraft in a manner that interferes with operations and traffic patterns at any airport, heliport, or seaplane base.