When tuning a VOR, what is the first step you should perform?

When tuning a VOR (VHF Omnidirectional Range), the first step you should perform is selecting the correct frequency. This is crucial because the VOR receiver in your aircraft needs to be set to the specific frequency of the VOR station you intend to navigate to. Each VOR station broadcasts its signal on a designated frequency, and tuning into the correct one ensures that you receive accurate directional information from the station.

Selecting the right frequency allows the aircraft's navigation system to lock onto the VOR signal, enabling you to tune in to the navigational aid effectively. If the incorrect frequency is selected, the VOR receiver may pick up the signal from a different station, leading to navigation errors and potential disorientation.

While checking the weather, calibrating the altimeter, and setting the Course Deviation Indicator (CDI) are all important aspects of pre-flight checks and flight preparation, they are not the immediate first action when focusing on VOR navigation setup. The VOR frequency must be set first to ensure the system can provide the correct guidance throughout your navigation.