What test is required after components in a pitot-static system have been replaced?

The static system leak test specified by FAR 91.411 is required after components in a pitot-static system have been replaced. This regulation mandates that the static system must be tested for leaks to ensure that it maintains integrity and operates correctly. A leak in the static system can lead to inaccurate altitude and airspeed readings, which are critical for safe flight operations.

This test involves pressurizing the static system and monitoring for any decrease in pressure over a specific period. If the pressure holds steady, it indicates that there are no significant leaks. This step is vital to ensure that all the components, including any newly replaced parts, are functioning as intended and that the instrumentation received accurate data.

The other options do not fulfill the specific regulatory requirement after replacing components in the pitot-static system. While dynamic pressure tests, system pressure calibration tests, and visual inspections are important in various contexts, they do not replace the necessity of the leak test outlined in FAR 91.411. This focus on regulatory compliance is crucial in aviation maintenance to uphold safety standards.