What are the dimensions for additional touchdown points at night for utility aircraft?

The correct dimensions for additional touchdown points at night for utility aircraft are 5 meters by 5 meters. This standard is set to provide clear and adequately sized designated landing areas for aircraft during low-visibility operations. It ensures that the touchdown points are sufficiently small to fit within the operational footprint of utility aircraft while still being large enough to allow pilots to identify and use them effectively, even in darkness.

Using the proper dimensions is crucial for safety and efficiency, as it helps in minimizing any potential confusion during night operations and allows for precise landing maneuvers in diverse situations. Other options presented do not align with the established guidelines for additional touchdown points at night, reflecting a deviation from the standard practice necessary for utility aircraft operations.