What is the main regulation that UAS pilots must adhere to when flying in U.S. airspace?

The main regulation that UAS pilots must adhere to when flying in U.S. airspace is Title 14 of the Code of Federal Regulations (CFR). This title outlines all of the Federal Aviation Administration (FAA) regulations governing civil aviation, including the operation of unmanned aircraft systems (UAS). Specifically, it encompasses the rules and guidelines that UAS pilots must follow to ensure safe and compliant operations within the national airspace system.

Title 14 CFR includes specific parts that address the operation of small unmanned aircraft systems, including Part 107, which sets the operational limits for UAS pilots, outlines the certification process, and details responsibilities related to safety, airspace restrictions, and other critical compliance issues. Understanding and adhering to these regulations is essential for UAS pilots to operate legally and safely.

Other options, such as the UAS Operations Manual, are important documents that can help pilots follow procedures during flight but do not represent regulatory requirements. FAR Part 91 primarily governs the operation of manned aircraft and does not directly apply to UAS operations. National Transportation Safety Board guidelines relate to safety investigations and reporting but are not the primary regulations governing UAS flights.