What does "fuel system integrity" mean?

"Fuel system integrity" refers specifically to the ability of the fuel system to hold fuel without any leaks. This concept is crucial in aircraft fuel systems, as leaks can lead to fuel loss, reduced efficiency, and in severe cases, safety hazards such as fire or engine failure. Ensuring the integrity of the fuel system involves regular inspections, maintenance, and the use of high-quality materials that can withstand the conditions within the fuel system, such as varying temperatures and pressures.

While the total amount of fuel in the tanks is important for operational planning, it does not directly relate to the structural and functional reliability of the fuel system itself. The efficiency of fuel pumps is a vital aspect of the overall operation of the fuel system, but it does not encapsulate the integrity of the entire system. Similarly, the compatibility of fuel with aircraft materials is critical to prevent chemical reactions that could compromise components, but it is not synonymous with the concept of integrity, which focuses on the containment and management of fuel.

Thus, defining "fuel system integrity" as the ability to contain fuel without leaks captures the essence of what this term stands for in the context of aircraft operations and safety.