What should be a priority during pre-operational checks of aerial devices?

During pre-operational checks of aerial devices, ensuring all safety features are functional should be a priority because the primary aim of these checks is to protect both the personnel operating the equipment and those who will be served by it. Aerial devices are complex pieces of apparatus that often operate at significant heights and under various conditions. Safety features, such as overload protection, stability indicators, and emergency shut-off mechanisms, are crucial in preventing accidents and ensuring safe operation.

These safety features assist in making sure the device can handle the expected loads and that it operates within safe limits. If any of these features are inoperative, it could lead to catastrophic consequences during an emergency response, endangering not only the crew but also victims and bystanders.

While testing the aerial ladder's extension, measuring the overall height of the vehicle, and verifying the fuel level are important checks, they do not take precedence over the functionality of safety systems. Ensuring that safety features are operational directly impacts the overall safety of the operation, making it the most critical aspect of pre-operational checks.