What is the maximum allowed bearing error for a successful VOR check?

The maximum allowed bearing error for a successful VOR (VHF Omnidirectional Range) check is ±4 degrees. This standard is established to ensure that the VOR system is functioning accurately and that pilots can rely on the information provided for navigation. During a VOR check, the bearing indicated must be within this tolerance when compared to a known reference point or the aircraft's heading.

This accuracy is critical for maintaining safe and effective navigation, especially in instrument flight rules (IFR) conditions. When pilots perform a VOR check, ensuring the system is within the ±4 degrees margin confirms that the navigation aid can be trusted during flight operations, helping to prevent navigation errors and maintain situational awareness.

Understanding this standard helps pilots develop a routine for regularly checking navigational aids and reinforces the importance of maintaining tight tolerances in aviation technology, which is fundamental for ensuring safety in the air.