What is the VOR radial accuracy for published airway radial alignment?

The standard for VOR (VHF Omnidirectional Range) radial accuracy, specifically related to published airway radial alignment, is ±3 degrees. This means that any aircraft navigating using VOR radials on published airways should expect that the radial being followed is accurate to within 3 degrees of the designated course.

This precision is important for maintaining safe separation from other aircraft, especially in busy air traffic corridors. The ±3-degree standard ensures that pilots can navigate effectively without deviating too far from the intended route, which is crucial for safety and efficiency in aviation operations.

Other accuracy standards, such as ±2, ±4, or ±5 degrees, do not align with the established guidelines for VOR airways and might reflect different operational contexts or older standards. However, the correct tolerance for published airway navigation is indeed set at ±3 degrees, ensuring reliability and safety in flight operations.