Boeing 777-200 Tutorial/KSFO-KLAX: Difference between revisions

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Boeing 777-200 Tutorial/KSFO-KLAX (view source)

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The Automatic Direction Finder uses a transmitter and aerial on the ground , an NDB (Non Directional Beacon) that allows the ADF instrument to point to the aerial that is tuned at a specified  frequency . So, no matter what direction you are travelling in ,  the main part of the needle points to the Actual Radio Aerial Position .
The Automatic Direction Finder uses a transmitter and aerial on the ground , an NDB (Non Directional Beacon) that allows the ADF instrument to point to the aerial that is tuned at a specified  frequency . So, no matter what direction you are travelling in ,  the main part of the needle points to the Actual Radio Aerial Position .


(the "middle" portion that moves from side to side , tells you how close , or far away , you are from your Desired Course . this part of the needle is called the CDI (Course Deviation Indicator)


In the RMI (Radio Magnetic Indicator) we can select a plain ADF frequency or the more information rich VOR signal, which is similar but has more information. It points to a selected direction 0-360 to the beacon you which once the needle is pointing at twelve o' clock or straight forward toward your selected VOR ( vor = Vhf (very high frequency) Omnidirectional Range-finder )you can press F12 and enter your current heading plus or minus 180, in the radial  box on the nav1 line.


The current should read 280 by default change that to the heading  you are on when the needle is  pointing forward  '''ie 12 O' Clock '''  
In the RMI (Radio Magnetic Indicator) we can select a plain ADF frequency or the more information rich VOR signal, which is similar but has more information. It points to a selected direction 0-360 to the beacon too which you are heading , once the needle is pointing at twelve o' clock or straight forward toward your selected VOR ( vor = Vhf (very high frequency) Omnidirectional Range-finder )you can press F12 and enter your current heading plus or minus 180, in the '''Radial Box Input''' on the Nav 1 line .
 
The current setting in that input box should read 280 , change that to the heading  you are on when the needle is  pointing forward  '''ie 12 O' Clock ''' plus or minus 180 degrees .
A radial is the direction in degrees '''FROM''' the actual vor aerial . 
 
 
(On the '''Green Needle''' there is often "middle" portion that moves from side to side , which tells you , how close , or far away , you are from your Desired Course . This part of the needle is called the CDI (Course Deviation Indicator)...if you are not too badly off course you can steer '''AWAY''' or to the opposite side indicated , to bring it to the center this will indicate
you are '''On The Radial''' , you have selected .
 
 
 


'''All of these instruments are combined in the left screen of the 777-200ER  '''   
'''All of these instruments are combined in the left screen of the 777-200ER  '''   
Vaeronic
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