What is the purpose of performing fuel system pressure checks?

Performing fuel system pressure checks is essential for identifying internal leaks in the fuel manifold. A pressure check helps determine whether the fuel system maintains proper pressure levels, which is critical for ensuring that the fuel is being delivered effectively to the engine and other components. If there are leaks within the fuel manifold, it can result in a loss of pressure, potentially leading to inadequate fuel supply and imbalances in engine performance.

By routinely checking the pressure, technicians can detect any anomalies that may indicate leaks, thereby preventing more significant issues that could arise from undetected leaks, such as performance degradation, engine damage, or safety hazards. Maintaining the integrity of the fuel system is crucial for the overall reliability and safety of the aircraft's operation.