What are two primary safety datalink requirements for UAS implementation in the NAS?

The answer focuses on the crucial needs for data communication in Unmanned Aerial Systems (UAS) when operating in the National Airspace System (NAS). Safety is paramount in UAS operations, and having reliable communication links is essential to maintain control of the aircraft and ensure its safe operation.

The requirement for near real-time telemetry from the UAS allows ground operators to receive vital information such as altitude, speed, battery status, and system health. This continuous stream of data helps operators make informed decisions and respond quickly to any issues that may arise during flight.

Similarly, near real-time flight commands to the UAS are crucial for ensuring that the drone can be directed as needed to avoid obstacles, adjust flight paths, or execute emergency maneuvers. This capability enhances the responsiveness of the UAS, thereby increasing safety during operations in crowded or complex airspace.

While other options address relevant aspects of UAS operations, they do not focus as directly on the primary need for real-time communication necessary for maintaining safety and situational awareness in the dynamic environment of the NAS. Options discussing backup communication or standard protocols, while important, do not prioritize the immediate control and telemetry needs that are critical for UAS safety.