What must be verified regarding the engine's mounting points during an inspection?

During an inspection of an aircraft engine, it is crucial to verify the integrity and security of all mounting hardware and structure. This involves checking that all mounting points are securely fastened and that there is no evidence of deterioration, such as corrosion, cracking, or deformation, which can compromise the engine's structural integrity and safety during operation.

Ensuring that the mounting hardware is in good condition is critical, as any failure in the mounting points could lead to catastrophic engine issues, including dislodgment during flight. This verification process typically includes looking at bolts, brackets, and other structural components that are responsible for securely attaching the engine to the airframe.

While accessibility for future inspections, weight distribution, and the outer casing do play roles in overall maintenance and safety considerations, they do not directly relate to the essential verification of the mounting points that support and stabilize the engine during operation. Therefore, the correct focus during engine inspections should be on consistently ensuring that mounting points are secure and in good condition, making the second option the best answer.