What is the long axis of HLS primarily used for?

The long axis of an HLZ (Helicopter Landing Zone) is primarily used for determining the landing heading. This aligns with optimal landing and takeoff procedures, ensuring that the helicopter approaches and departs the HLZ in a direction that minimizes risk and maximizes safety. By establishing a clear long axis, pilots can better align their approaches with prevailing wind conditions, manage descent angles, and avoid obstacles that may be present around the landing zone.

Moreover, understanding the landing heading in relation to the HLZ assists in coordinating operations with other air traffic and improves overall situational awareness for both pilots and ground crews. While other choices may seem relevant, they do not directly pertain to the primary function of the long axis in the context of landing operations.