Can you proceed direct to a radial/DME fix using only ground-based NAVAIDs in the NAS?

In the context of navigating using ground-based NAVAIDs (Navigational Aids) in the National Airspace System (NAS), proceeding directly to a radial/DME (Distance Measuring Equipment) fix is not permissible. This is primarily due to the requirement for pilots to adhere to specific air traffic control instructions and established procedures for routing and navigation.

Ground-based NAVAIDs provide important reference points for navigation, but transitioning directly to a radial or DME fix without proper authorization or guidance may lead to safety concerns and potential conflicts with air traffic. Airspace management aims to ensure safe distances between aircraft and predictable flight paths, which is why you must follow a route as published or as directed by air traffic control.

The regulations and procedures in place for the NAS prioritize the safety and efficiency of air traffic flow, and therefore, direct navigation to a radial/DME fix without the necessary approvals is not allowed.