From which sources should aircrew obtain and use information or publications as a first preference?

The first preference for aircrew to obtain and use information or publications is from US Government sources. This is because these sources are authoritative and provide the most reliable and updated regulations that govern flight operations, safety protocols, and other critical information relevant to aircrew duties.

US Government sources include publications such as the Federal Aviation Administration (FAA) regulations, notices, and other official documents that establish standards for aviation safety, pilot responsibilities, and operational procedures. These materials are developed based on rigorous research, analysis, and the collective experience of aviation professionals. By prioritizing these credible sources, aircrew can ensure they are adhering to national regulations, thereby enhancing safety and compliance during operations.

While other sources may offer valuable information, they may not always reflect the most current regulations or may differ in their applicability to US airspace and operations. Thus, starting with US Government sources ensures that aircrew are operating based on the most relevant and official guidelines.