What action should be taken to minimize risk of exhaust-related damage during ground runs?

• A. Follow maintenance manual procedures for ground run operations.
• B. Run the engine at maximum RPM.
• C. Skip pre-run checks.
• D. Operate in a closed hangar without ventilation.

Answer: (B)

Following the maintenance manual procedures for ground run operations is the best way to minimize exhaust-related damage. These procedures specify safe warm-up and cooldown steps, appropriate power settings and durations, required checks, and ventilation requirements. Adhering to them keeps the engine within design limits and ensures exhaust is managed properly, reducing the likelihood of overheating or heat damage to surrounding components.

Running the engine at maximum RPM increases exhaust temperatures and stresses the exhaust system, which raises the risk rather than reduces it. Skipping pre-run checks removes critical safety steps that catch leaks or misadjustments before they cause damage. Operating in a closed hangar without ventilation traps exhaust gases and heat, creating dangerous conditions and potential corrosion or overheating.