Stay away from locations where injury may occur if you are knocked over by the helicopter's downwash. Secure youself at cliff edges. Wait for the pilot or crew member to signal before approaching. Remain in the pilot's view when approaching or leaving the helicopter. Always crouch down when approaching or leaving the aircraft.
Wind gusts can cause the blade tips to dip below their normal position.
Never approach or leave the helicopter on ground higher than the landing area. Stay away from the rear rotor. Nonessential personal should stay at least 75 feet away from the landing area. For hovering type rescue, allow the lowering line to touch the ground to discharge static electricity. Never attach a hovering helecopter's winch line to a fixed object.