VOR ChecksV. VOT Check. This is used at a designated airport. It sends out a signal, that on your VOR indicator will indicate a 180 and a “TO” indication and a 360 “FROM” indication. This check has a tolerance of plus or minus 4 degrees. A. Designated Point Check. At some airport, along with some designated VOR’s, there are radials that can be checked with the VOR indicator. This information is located in the A/FD, and there are also signs on the airport on what course to dial into the OBS on the VOR. The maximum allowable error for this is plus or minus 4 degrees. G. Ground Check. The regulations state that this checkpoint has been designated by the Administrator, which is located in the A/FD or on the IFR area and enroute low level charts. To complete this check you line up the aircraft with the radial and the ground point. The tolerance for this is plus or minus 6 degrees. A. Airway Check. This is similar to a ground check, but it involves the use of an established Victor Airway and a checkpoint preferable more than twenty nautical miles from the VOR. You should maneuver the aircraft over the point at a reasonably low altitude and note the error between the ground point and the radial. The error on this is plus or minus 6 degrees. D. Dual VOR Check. This check can be performed if you have two VOR indicators in the aircraft. You select a radial and dial it into both indicators. The indicators have to be separate units, but can be used with the same antenna. The maximum error for this test is 4 degrees variation between the two indicators. When conducting any of these VOR checks, it must be logged in the aircraft logs. This log is to include the date, the location of the test conducted, the bearing error, and the signature of the individual who conducted the test. |
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