Which description best matches the recommended procedure to ensure pitot tubes and static ports are free of obstructions?

Which description best matches the recommended procedure to ensure pitot tubes and static ports are free of obstructions?

• A. Visually inspect and remove any protective covers; verify clean ports and tubes
• B. Run the engines at high idle to clear lines
• C. Only inspect visually without removing covers
• D. Replace all pitot tubes annually

Answer: (A)

The essential idea is to ensure the air data system is open to the air by doing a careful preflight check that includes removing protective covers and confirming the ports and tubes are clean. Protective covers can hide dirt, insects, or debris that would block the flow of air into the sensors, leading to false readings if they’re left in place. By taking them off and then verifying the ports and tubes are free of obstruction, you’re confirming the system can measure air pressure accurately. Why this approach is the best fit: removing covers exposes any hidden blockages and allows you to physically see that the ports and passages are clear, which is the only reliable way to ensure accurate airspeed and altitude indications. Merely running the engines to “clear” lines isn’t a proper or safe method for freeing obstructions in pitot/static systems, and it doesn’t address the risk of debris inside the tubes or ports. Visual inspection alone can miss obstructions behind covers or small debris inside, while replacing components on a schedule without checking current condition doesn’t guarantee the system is actually clear. So, the recommended procedure is to visually inspect and remove any protective covers, then verify that the ports and tubes are clean.

The essential idea is to ensure the air data system is open to the air by doing a careful preflight check that includes removing protective covers and confirming the ports and tubes are clean. Protective covers can hide dirt, insects, or debris that would block the flow of air into the sensors, leading to false readings if they’re left in place. By taking them off and then verifying the ports and tubes are free of obstruction, you’re confirming the system can measure air pressure accurately.

Why this approach is the best fit: removing covers exposes any hidden blockages and allows you to physically see that the ports and passages are clear, which is the only reliable way to ensure accurate airspeed and altitude indications. Merely running the engines to “clear” lines isn’t a proper or safe method for freeing obstructions in pitot/static systems, and it doesn’t address the risk of debris inside the tubes or ports. Visual inspection alone can miss obstructions behind covers or small debris inside, while replacing components on a schedule without checking current condition doesn’t guarantee the system is actually clear.

So, the recommended procedure is to visually inspect and remove any protective covers, then verify that the ports and tubes are clean.