Which conditions can increase hazard from rotor blades after a helicopter crash?

• A. Flat ground with calm winds.
• B. Uneven terrain and high winds can put people closer to blades.
• C. Water surface.
• D. Downward slope.

Answer: (B)

When a helicopter crashes the danger from the rotor blades comes from the continuing rotation and the unpredictable path of the blades relative to the ground. Uneven terrain changes the distance and angle between people and the rotating blades, so responders can inadvertently end up closer to the blade path as they move around the wreck. Add high winds, and gusts can keep blades turning or cause the aircraft to shift, pushing or pulling people and debris into the blade arc. This combination creates the greatest risk of contact with the blades. In contrast, flat ground with calm winds keeps distances more predictable; a water surface doesn’t inherently bring you nearer to the blades, and a downward slope alone doesn’t increase exposure as much as irregular terrain combined with gusty winds.