When are aerial patrols typically conducted?

Aerial patrols are typically conducted during daytime VFR (Visual Flight Rules) conditions. This is primarily because VFR relies on visual references to navigate and ensure safety, which is significantly more challenging at night due to reduced visibility. During the day, pilots can easily observe the pipeline, surrounding terrain, and any potential anomalies or issues that may require attention.

Daytime operations enable the patrol team to perform thorough inspections, as they rely on visual assessments to identify leaks, vegetation encroachment, or any other conditions that could impact pipeline integrity. Conducting aerial patrols during daytime VFR also aligns with regulatory requirements and industry best practices, ensuring that inspections are carried out safely and effectively.

While patrols could theoretically occur at night or during scheduled maintenance, these scenarios do not align with the preferred conditions for effective and safe aerial pipeline monitoring.