Prohibited and restricted areas are established under which part of the CFR?

The establishment of prohibited and restricted areas falls under 14 CFR Part 73. This part specifically governs special use airspace, which includes prohibited areas that cannot be entered without authorization and restricted areas where flight is limited due to hazards or military activities. These areas are carefully defined to ensure safety in the National Airspace System and are published on sectional charts for reference by pilots.

In contrast, 14 CFR Part 91 deals with general operating and flight rules, while Part 61 covers the certification of pilots and flight instructors. Part 121 pertains to operating requirements for domestic, flag, and supplemental operations by air carriers, which doesn't directly address airspace classifications. Therefore, the identification and regulation of prohibited and restricted areas are exclusive to Part 73.