What is required for accessing a Controlled Movement Area (CMA)?

Accessing a Controlled Movement Area (CMA) is a highly regulated activity that requires specific protocols to ensure the safety and security of aircraft operations. The correct answer emphasizes the importance of obtaining Specific Air Traffic Control Tower (ATCT) approval prior to entering a CMA. This requirement is crucial because the ATCT is responsible for managing air traffic and maintaining safe distances between aircraft on the ground.

By requiring specific approval from the ATCT, it ensures that all movements within the CMA are coordinated and accounted for, reducing the risk of accidents or unauthorized access. The ATCT serves as the central authority that monitors and directs all operations within the airfield environment, thereby maintaining order and safety in a busy air traffic scenario.

In contrast, while other options might relate to general airfield operations—like visual signals or permissions from pilots—none provide the comprehensive oversight and authority that comes with ATCT approval. This makes the CMA access protocol not just about communication among ground personnel, but an integral part of the overall air traffic management system at the airfield.