User guide
31 
VOR Navigation Display 
To/From Indicator 
OBS Setting
VOR Frequency
The Green course indicator points to the current course you have selected using the OBS setting. The OBS setting 
can be set using the knob on the EFIS when <-CRS-> is displayed over the knob (press the knob if CRS is not 
displayed). The current OBS setting is displayed in the text area. If the Nav radio is tuned to a VOR, this is the radial 
to fly. The SL-30 OBS setting can also be set using the OBS button on the radio. The radio identifier will also be 
decoded and displayed only if you are using an SL-30 radio. 
CDI 
Each dot in the course deviation indicator indicates 2 degrees of deviation from the course radial. 
VOR 
If the radio is tuned to a standard VOR frequency and is giving a valid TO / FROM indication the display will show 
VOR in green letters. If the radio does not have a valid indication the display will show VOR and it should not be 
used for navigation. 
BTA 
The BTA (Bearing To Active) displays the direct bearing to the active VOR station and will be displayed on the HSI as 
a yellow bearing needle. If you are flying directly to the VOR on the Course OBS setting the bearing needle will be 
under the Green course needle.  
BTS 
The BTS (Bearing To Standby) displays the direct bearing to the Standby VOR station if you have selected M 
(monitor) on the SL-30. The BTS will be displayed on the HSI as a orange line with a circle.  
IDNT 
IDNT displays the current nav frequency identifier decoded from the SL-30. 
TO/FROM 
The To/From radio flag will be displayed by a green triangle on the course needle. 










