Applicability

This regulation introduces Part 73, which governs special use airspace (SUA) in the United States. It tells you that the specific areas of special use airspace are listed in two subparts of this regulation: Subpart B covers prohibited and restricted areas, while Subpart C covers warning areas.

In practical terms, this means Part 73 is your reference for understanding where special use airspace exists and what rules apply when you're flying near or through it. Special use airspace includes areas where flight activities are restricted or prohibited due to national security, military operations, or other hazards to aircraft.

As a pilot, you need to check Part 73 (along with current NOTAMs and charts) to identify these areas during flight planning. Flying into prohibited or active restricted airspace without authorization can result in serious consequences, including pilot certificate action and potential security responses.

*This is a plain-English summary for study only. The official 14 CFR text on this page is controlling — always read the current regulation and consult a CFI.*