Which section defines airspace classification?

Which section defines airspace classification?

• A. ENR 1.4
• B. ENR 2
• C. GEN 3.5
• D. ENR 5.4

Answer: (A)

Airspace classification is published as part of the enroute information in the AIP, because this section deals with how airspace is structured for flight planning and navigation. The specific subsection that defines airspace classification is ENR 1.4, which lays out the different classes, their boundaries, and the rules that apply to each. This placement makes sense since ENR covers enroute operations, including the organization of controlled and uncontrolled airspace that pilots must understand before flight. The other sections address different topics—for example, general information or other enroute details like routes and restrictions—so they do not provide the official definitions of airspace classes.

Airspace classification is published as part of the enroute information in the AIP, because this section deals with how airspace is structured for flight planning and navigation. The specific subsection that defines airspace classification is ENR 1.4, which lays out the different classes, their boundaries, and the rules that apply to each. This placement makes sense since ENR covers enroute operations, including the organization of controlled and uncontrolled airspace that pilots must understand before flight.

The other sections address different topics—for example, general information or other enroute details like routes and restrictions—so they do not provide the official definitions of airspace classes.