In the Spark Plug with Girl scenario, what was the initial action taken to investigate the rough mag drop?

In the Spark Plug with Girl scenario, what was the initial action taken to investigate the rough mag drop?

• A. I called maintenance and continued the flight.
• B. I checked the spark plugs and cleaned them at the maintenance shop.
• C. I replaced the engine with a new one.
• D. I ignored the issue and pressed on.

Answer: (B)

Troubleshooting a rough mag drop starts with the ignition system. The spark plugs are the most accessible and common fault source for ignition problems; if they’re fouled, worn, or have an incorrect gap, they can cause misfires and uneven magneto performance that you feel as roughness in one cylinder. Checking and cleaning the spark plugs at maintenance quickly confirms whether deposits or wear are the root cause, and it’s a fast, non-destructive step that can restore proper ignition if fouling is the issue. If the plugs look good after cleaning, you’ve narrowed the problem to other ignition or fuel-system factors and can proceed with more targeted checks. The other options either ignore the warning sign, are too drastic for an initial investigation, or wouldn’t address the likely ignition-related cause right away.

Troubleshooting a rough mag drop starts with the ignition system. The spark plugs are the most accessible and common fault source for ignition problems; if they’re fouled, worn, or have an incorrect gap, they can cause misfires and uneven magneto performance that you feel as roughness in one cylinder. Checking and cleaning the spark plugs at maintenance quickly confirms whether deposits or wear are the root cause, and it’s a fast, non-destructive step that can restore proper ignition if fouling is the issue. If the plugs look good after cleaning, you’ve narrowed the problem to other ignition or fuel-system factors and can proceed with more targeted checks. The other options either ignore the warning sign, are too drastic for an initial investigation, or wouldn’t address the likely ignition-related cause right away.