Which CFR covers operations in Class D airspace?

CFR 91.129 specifically addresses the operating rules applicable to Class D airspace. This regulation outlines the requirements for communications with air traffic control (ATC) and the operational procedures pilots must adhere to when flying in this type of airspace.

Class D airspace is generally located around airports with an operational control tower, and it requires pilots to establish two-way radio communication with ATC before entering. CFR 91.129 emphasizes the importance of this communication, ensuring that pilots can receive instructions and clearances necessary for safe operations within that airspace.

Understanding Class D airspace rules is crucial for pilots, as it enhances safety by promoting better coordination between aircraft and air traffic control, especially in areas with a higher density of aircraft operations.