When the course deviation indicator needle is centered during an omnireceiver check using a VOR test signal, the omnibearing selector and the indicator should read...

When conducting a VOR (VHF Omnidirectional Range) test signal check and the course deviation indicator needle is centered, this indicates that the VOR receiver is operating correctly and aligned with the test signal. The omnibearing selector (OBS) should indicate the radial to which the VOR signal is pointing, and in this scenario, the correct reading on the omnibearing selector corresponds to the specific radial defined by the VOR test signal.

In this case, the correct response shows that the omnibearing selector should read 246 degrees, which is a specific bearing related to the test signal being used. This confirms that the receiver is accurately interpreting the signal and helps ensure that the aircraft’s navigation system is functioning as intended.

Furthermore, the knots indicated (13 knots in this case) are not a focal point in the context of a VOR check but are included in the answer as part of the overall scenario. The crux of the matter is that a centered course deviation indicator while on the correct radial confirms effective performance of the VOR equipment.

The other options present different readings that do not align with the expected results from a VOR test signal, leading to incorrect interpretations of the aircraft's orientation relative to the VOR ground station.