What are typical risks associated with engine run-ups on the ramp and how are they mitigated?

• A. Engine surges and rotor wear; mitigated by running at takeoff speed.
• B. Bird strikes and fuel leaks; mitigated by spraying water.
• C. Electrical faults and system resets; mitigated by rebooting.
• D. Noise and potential FOD ingestion; mitigated by securing the area, using barricades, and following procedures.

Answer: (D)

Engine run-ups on the ramp create two main hazards: the powerful jet blast and the potential for debris to be sucked into or blown around by the engine. That jet exhaust can injure people nearby, move or damage equipment, and, if there’s loose objects, can cause foreign object damage (FOD) to the aircraft or surrounding systems. The noise from the engine at high RPM is also a safety concern for hearing and communication.

Mitigation centers on controlling the blast area and keeping the ramp free of hazards. Secure the area with barricades or clear markings, restrict access to authorized personnel, and ensure ground crew and vehicles stay well clear of the engine’s path. Remove or secure loose items on the ramp, perform a thorough FOD check, and follow established run-up procedures for the designated area. Employ hearing protection and maintain clear communication with the crew to prevent missteps during the operation.

Other options miss the primary hazards of run-ups (the emphasis is on noise and FOD risk) and offer measures that don’t align with how run-ups are safely managed in practice.