Which FAA document outlines the operational limitations for sUAS?

The correct choice is indeed the document that details the operational limitations for small Unmanned Aircraft Systems (sUAS). 14 CFR Part 107 specifically governs the operation of sUAS in the United States for commercial purposes. It outlines important regulations, including altitude restrictions, operational airspace, pilot certification requirements, and other safety guidelines that must be adhered to when operating sUAS.

Understanding this part of the Code of Federal Regulations is crucial for sUAS operators, as it provides the framework they must follow to ensure safe and compliant operations. It contains the rules that help mitigate risks associated with flying these systems, thereby promoting safety in the national airspace.

The other options refer to different parts of the regulations that do not specifically address sUAS operational limitations. Part 91 deals with general operating and flight rules for all aircraft, Part 61 focuses on pilot certification standards for manned aircraft, and Part 135 covers operation of commuter and on-demand commercial services. None of these are tailored specifically to the unique needs and safety considerations of small UAS, making Part 107 the essential document for sUAS operations.