What are the 4 Rs?

• A. Remove
• B. Reduce
• C. Mark with Red
• D. Radio advisory to pilot

Answer: (C)

Hazard management in a landing zone uses four actions: remove hazards, reduce hazards, mark the hazard with red, and radio the advisory to the pilot. Marking with red is the best answer because it creates a clear, immediate visual cue for pilots approaching the zone. The red markers stand out against varied terrain and lighting, signaling exactly where a hazard exists so the pilot can steer clear without relying on radios or other cues alone. Removing or reducing hazards are about lowering risk, and radioing the advisory communicates information, but the red mark directly communicates the hazard's location in the airspace and on the ground, which is essential for quick and accurate pilot awareness.