During engine run-ups, what area around the aircraft should be secured to prevent FOD and protect bystanders?

• A. Leave doors and gates open.
• B. Only the immediate engine intake area.
• C. Secure the area and use barricades to prevent FOD and protect bystanders.
• D. No restrictions.

Answer: (C)

When you run up an engine, the area around the aircraft must be secured with a defined boundary and barricades. High engine power creates powerful jet blast and suction that can propel loose objects (FOD) into the engine or toward bystanders, and debris can travel well beyond the immediate intake. Establishing a controlled perimeter with barricades or guards keeps people out of danger and prevents objects from entering the risk zone, making the run-up safer for everyone nearby. Options that leave doors or gates open, only protect the immediate intake, or impose no restrictions do not address the broader safety risks and are not acceptable.