For heavily loaded helicopters, how far should the clear path extend?

In the context of heavily loaded helicopters, the correct choice is that the clear path should extend at least 100 yards in each direction. This distance is critical for ensuring safety during helicopter operations. Heavily loaded helicopters have specific operational characteristics, including increased rotor wash and potential hazards associated with wake turbulence. Maintaining a clear path of this length helps to mitigate risks associated with debris, wind effects, and any emergency landing procedures that may be necessary.

This requirement recognizes the fact that the rotor system of a heavily loaded helicopter generates considerable downwash, which can disturb the surrounding environment and pose dangers to personnel, equipment, and structures located too close to the helicopter during takeoff and landing. By ensuring a clear area that extends 100 yards, operators can better secure the safety of the operational environment and protect individuals from potential hazards.