When checking the accuracy of a VOR receiver with an RMI, what should be indicated if no error exists?

When verifying the accuracy of a VOR receiver using a Radio Magnetic Indicator (RMI), the correct indication when no error exists should show a bearing of 180° TO the VOR station. This is because the RMI is designed to provide the magnetic bearing directly to the VOR station based on the aircraft’s position and heading.

In this scenario, if the aircraft is positioned directly on the 180-degree radial of the VOR, the RMI will indicate a "TO" flag along with the bearing of 180 degrees, confirming that the receiver is accurately tuned to the respective VOR station. This ensures that pilots can trust that the navigational information provided by the VOR system is reliable and aligned with the aircraft's heading.

Other options would indicate different relative positions or orientations with respect to the VOR station. For instance, a reading of 360° TO or 360° FROM would typically suggest that the aircraft is pointing directly towards or away from the VOR station along the same radial path, which may not correct for the situation described in the question. Thus, the only correct depiction of "no error" in this context is the 180° TO indication, which directly reflects the proper navigational alignment of the VOR