What is a key reason for securing pesticide application aircraft and equipment when not in use?

Securing pesticide application aircraft and equipment when not in use is primarily about preventing intruder access to the equipment. This is crucial for safety reasons, as unauthorized individuals gaining access to pesticides or machinery can lead to potential misuse, accidents, or environmental contamination. Ensuring that only trained and authorized personnel can access these resources helps mitigate risks associated with the handling of hazardous substances and equipment.

While other factors like wear and tear or performance may be considerations, they do not emphasize the immediate and critical aspects of safety and security that are paramount when dealing with pesticides and aviation equipment. Additionally, maintaining insurance compliance can be important, but it is not the primary reason for security measures; instead, it is more about ensuring the safety of the community and environment from unauthorized access and possible incidents.