Where should fasteners not be missing according to the rules?

Fasteners serve a critical role in ensuring that aircraft components remain securely attached and function safely. The leading edge of the panel is particularly important because it contributes to the aircraft's aerodynamic performance and structural integrity. If fasteners are missing from this area, it could lead to potential failures during flight, such as panel separation or compromised airflow, which could significantly affect the aircraft's handling and safety.

In contrast, the other areas mentioned, while still important, may not have the same immediate aerodynamic implications. Fasteners on engine mounts and fuel tanks are essential for different reasons, such as maintaining engine stability and preventing fuel leaks, but the leading edge of the panel is critical for maintaining the overall aerodynamic structure of the aircraft. Therefore, it is crucial to ensure that fasteners are present in this area to maintain the safety and performance of the Super Hornet.