During engine run-ups, what is the recommended distance from people and equipment?

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During engine run-ups, the engine operates at high power, producing a powerful jet blast and suction at the intake, plus high noise and the potential for foreign objects to become projectiles. Keeping a safe distance from people and equipment minimizes the risk of injury or damage if debris is expelled or if the blast affects nearby gear. Using shielding helps contain the jet blast and deflect any debris, adding a crucial layer of protection for personnel and nearby equipment. Standing in line with the engine intake is dangerous because debris can be ingested and the intake area is where the strongest suction and blast occur. Standing close or running without barriers offers little protection against FOD, heat, and noise. So the best practice is to maintain a safe distance and use shielding.