What is the lateral separation distance provided for an aircraft on an established airway within 51 miles from the NAVAID?

The lateral separation distance provided for an aircraft on an established airway within 51 miles from the NAVAID is 4 miles either side. This standard is grounded in air traffic control procedures to ensure safe navigational separation between aircraft operating on parallel routes or near airways. The use of a 4-mile lateral separation distance helps mitigate the risk of wake turbulence and allows for precise navigation while flying in the vicinity of NAVAIDs.

Understanding the necessity of maintaining appropriate separation distances is crucial for preventing conflicts and ensuring the safety of all aircraft in controlled airspace. The specific distance chosen reflects a balance between maintaining safe operational margins and the usability of the airspace for efficient flight operations.