What equipment is typically used for conducting a static system leakage check?

A manifold gauge is typically used for conducting a static system leakage check because it allows the technician to monitor pressure levels within the static system of an aircraft. During the check, the manifold gauge can be connected to the static port of the aircraft's altimeter or other static-sensitive instruments. This setup enables the technician to apply a known pressure to the static system and observe whether the pressure holds steady or if it decreases over time, indicating a leak.

In the context of aircraft systems, maintaining an accurate static pressure is crucial for the proper functioning of altimeters and other instruments that rely on pressure information to measure altitude and perform other critical functions. Thus, the use of a manifold gauge is essential for diagnosing issues related to static system integrity.