How do you conduct a VOT check?

To conduct a VOT (VOR Test Facility) check, the correct procedure involves tuning your VOR receiver to the VOT frequency, which is typically found in the airport's or facility's published information. After tuning to the VOT frequency, the next step is to adjust the CDI (Course Deviation Indicator) to indicate the correct signal.

The process begins by tuning to the specific VOT frequency and observing the CDI for correct operation. The first adjustment involves twisting the CDI knob to set the indicator to 180 degrees, which should yield a full scale deflection to one side. This means the VOR is indicating that you are directly opposite the VOT signal. Next, when you turn the CDI to 360 degrees, it should show full scale deflection to the other side, indicating that you are directly over the VOT signal.

This double check confirms the accuracy of the CDI and ensures that it properly reflects the VOT signal, validating the equipment's calibration and functionality. Deviations from these expected readings indicate that the VOR is not functioning correctly, necessitating maintenance before further use.

The other options do not entirely encompass the complete check procedure. Simply observing the CDI would not confirm accuracy, and adjustments only to either 180