What is the diameter associated with TDP Size 3?

The diameter associated with TDP (Touchdown Point) Size 3 is 50 meters. TDP sizes are part of the standards used to designate landing zones for helicopters, ensuring adequate space for safe operations. A TDP Size 3, being moderately sized, is suitable for larger helicopters and allows enough room for them to safely land and depart while considering surrounding obstacles or any adverse conditions. Understanding these size specifications is crucial for maintaining operational safety and efficiency in managing helicopter landing zones.