Formation flying is permitted under what condition?

Formation flying is permitted when it is prearranged by the pilots in command. This condition emphasizes the importance of coordination and planning between the pilots involved. When pilots agree to conduct formation flying prior to the flight, they establish the necessary communication and mutual understanding of roles, responsibilities, and separation distances required for safety. This arrangement helps ensure that all participants are aware of each other's intentions, maneuvers, and the flight path, reducing the chance of misunderstandings that could lead to danger.

The other conditions listed may relate to general flying regulations or safety standards, but they do not specifically address the unique requirements and dynamics of formation flying as established by pilot agreement.