What is an acceptable communication method for obtaining permission in a Controlled Movement Area?

Two-way radio contact with the Air Traffic Control Tower (ATCT) is the standard and accepted method for obtaining permission in a Controlled Movement Area. This method ensures clear and immediate communication between the operator and air traffic control, facilitating effective coordination and enhancing safety. Radio communication allows for the exchange of critical information, such as the current operating conditions, other aircraft in the vicinity, and specific instructions that must be followed to navigate through or operate in the controlled area safely.

Using verbal communication via radio is compliant with aviation protocols, as it reduces the likelihood of misunderstandings that might occur with visual signals or written requests, which may not be as timely or clear in fast-paced environments. While other methods like written requests or mobile phone calls could theoretically convey information, they do not provide the immediacy and direct interaction necessary for safe operations in a controlled airspace.