What is the allowable error for a VOR check in the air?

The acceptable error for a VOR check in the air is ±6 degrees. This standard is established to ensure that pilots have accurate navigational information when using VOR for instrument flight. During a VOR check, if the indicated radial error exceeds this tolerance, the VOR equipment might not be providing reliable guidance, which can compromise the safety of the flight.

Understanding the significance of the VOR system is essential for IFR operations, as VORs are widely used for navigation and position reporting. Maintaining this level of accuracy is crucial for ensuring pilots can safely navigate and follow their intended flight path, as well as for avoiding airspace violations or navigational errors.