What is the total vertical distance of the Inverted Y marking?

The correct answer regarding the total vertical distance of the Inverted Y marking is 14 meters.

When designing and using helicopter landing zones, the Inverted Y marking is a crucial visual aid that helps pilots identify a safe landing area. This marking is composed of a specific measurement, where the vertical dimension of the Y, which is the portion that extends downward, reaches 14 meters in height. This ensures that the visual marker is prominent enough for pilots to recognize from the air while providing an adequate reference point for safely aligning with the landing zone. Given the operational importance of these markings, understanding their dimensions enables effective communication and ensures safety in landing procedures.

The other total vertical distance options, such as 7 meters, 21 meters, and 10 meters do not correspond to the established specifications for the Inverted Y marking used in helicopter operations, which is why they are not the correct answers. The understanding of these measurements is essential for creating effective and standardized landing zones.