What should be the primary focus during a vehicle pre-operation check?

The primary focus during a vehicle pre-operation check should be on ensuring the vehicle is mechanically sound. This is crucial for the safety of the operator, passengers, and others working in the airside environment. A thorough check helps to identify any mechanical deficiencies that could pose a risk. This includes inspecting the brakes, steering, lights, tires, and other critical systems that contribute to the vehicle's safe operation.

While aspects such as cleaning the vehicle exterior and checking for correct decals and signage are important for appearance and compliance, they do not directly impact the operational safety of the vehicle. Ensuring the vehicle is mechanically sound minimizes the risk of breakdowns or accidents, which is paramount in an airside environment where safety is a top priority. Aesthetics, while they play a role in the overall upkeep of the vehicle, should not take precedence over the essential functionality and safety checks.