What is noted as the maximum acceptable bearing error for a VOR receiver on the ground?

The maximum acceptable bearing error for a VOR receiver on the ground is ±4 degrees. This standard ensures that the VOR system provides accurate navigation information, which is critical for pilots when they are determining their position relative to radio navigation aids.

VOR (VHF Omnidirectional Range) systems are vital for en route navigation, and maintaining a strict standard for allowable errors is essential for safety. The ±4 degrees bearing error indicates that the information the pilot receives from the VOR is reliable for navigation purposes and allows for precision in flight planning and execution.

On the other hand, other figures, such as ±2 degrees, ±6 degrees, and ±8 degrees, do not align with the established standards for ground testing of VOR receivers. These values represent either overly strict or lenient tolerances that would not support the operational integrity required by the FAA guidelines. Thus, ±4 degrees is the correct and accepted tolerance for VOR receivers on the ground.