What action should be taken if a fuel system component is damaged during maintenance?

When a fuel system component is damaged during maintenance, the safest and most reliable action is to replace it with a new component. This choice is rooted in the critical nature of fuel systems within an aircraft; they must function flawlessly to ensure the safety and integrity of the flight operation. Damaged components can lead to leaks, fuel contamination, or malfunctioning systems that might compromise the aircraft's performance and safety.

Choosing to repair a damaged fuel component may not guarantee its integrity or reliability, as repairs can sometimes lead to weak points or potential failure under operational stress. Thoroughly inspecting the component before deciding, while prudent, does not address the fundamental issue of reliability and could result in overlooking unseen damage. Continuing to use a damaged component until it fails poses significant risks, potentially resulting in dangerous in-flight conditions.

Thus, replacing the damaged part ensures that the fuel system maintains its integrity and functions as intended, promoting the aircraft's safety and performance.