What is the diameter of TDP Size 1 for certain helicopters?

The diameter of the Touchdown Point (TDP) Size 1 for certain helicopters is indeed 25 meters. This specific measurement is critical for ensuring safe and effective landings of smaller helicopters, particularly in operations where space may be limited. The 25-meter diameter facilitates a secure area for the helicopter to touch down, taking into account necessary safety clearances for the rotor wash and any potential obstacles in the vicinity.

In helicopter operations, different sizes of TDPs correspond to the various classes of helicopters based on their size and weight, which directly affects their landing needs. Identifying the correct TDP is essential for both operational safety and efficiency, allowing helicopters to land reliably in confined zones or during varied mission profiles.