What is a major difference between a Sectional Aeronautical Chart and a Terminal Area Chart?

The Terminal Area Chart (TAC) is specifically designed for use in the vicinity of airports where aircraft are preparing to take off or land, as well as during the approach and departure phases of flight. One of the key features of the TAC is its larger scale compared to a Sectional Aeronautical Chart. This larger scale provides more detail in a smaller geographical area, which is essential for pilots operating in congested airspace around airports.

The finer detail available on a TAC allows pilots to more accurately navigate and understand the altitude, airspace classifications, and potential obstacles in close proximity to the airport. This is particularly important for managing the complex environment of busy terminal airspaces that can involve multiple aircraft, various flight paths, and significant ground features.

In contrast, a Sectional Aeronautical Chart typically covers a broader area at a smaller scale, focusing more on general navigation and less on the intricacies required during takeoff and landing phases. Thus, the larger scale of the TAC is what differentiates it significantly from Sectional Aeronautical Charts, making the TAC more suitable for its purpose.