VOR -ND VOR AUTOTUNE DISPLAY
General
In autotune, the flight management computing function (FMCF) of AIMS supplies the VOR frequencies to the VOR/MB receivers.
Autotune Displays
When the FMCF of AIMS autotunes the receivers, these displays change:
*
Replace VOR selected course numbers with dashes
*
Remove selected course arrow
*
Remove deviation bar and scale
*
Remove to/from pointer and indication.
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VOR -ND VOR AUTOTUNE DISPLAY
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VOR -ND VOR MAP MODE DISPLAYS
General
VOR data shows in the ND map mode when the VOR/ADF switches on the EFIS control panels are in the VOR position.
Description
The ND map mode shows in the centered or expanded mode. The map mode shows the tuned VOR stations if they are inside the selected range. When you set the EFIS control panel VOR/ ADF switches to the VOR position, the bearing pointers show on the compass scale and the VOR data show at the lower corners of the NDs.
When the VOR/ADF switches are set to the off position, the pointers and VOR data go out of view.
Push the POS button on the EFIS control panel to show VOR radial data. The radial shows as a green line from the tuned VOR station to the airplane symbol. The radial identifier shows as the letter R followed by a three digit number.
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VOR -ND VOR MAP MODE DISPLAYS
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VOR -ND VOR NCD DISPLAYS
General
The inputs that are necessary for VOR displays are:
*
Bearing from the VOR/MB receivers
*
Frequencies from the CDUs or the AIMS cabinets
*
Selected course from the CDUs or the AIMS cabinets.
When one of these inputs change to a no computed data (NCD) condition, some of the displays go out of view.
Bearing NCD
When the VOR bearing output from the VOR/MB receiver goes to an NCD condition, these VOR displays change:
*
Remove the deviation bar
*
Remove to/from pointer and indication.
Frequency NCD
When the frequency input to the VOR/MB receiver goes to an NCD condition, these VOR displays change:
*
Replace frequency or identifier with dashes
*
Remove the deviation bar
*
Remove the to/from pointer and indication.
Selected Course NCD
When the selected course input goes to an NCD condition, these displays change:
*
Replace the selected course numbers with dashes
*
Remove the selected course arrow
*
Remove the deviation bar and scale
*
Remove the to/from pointer and indication.
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777 AIRCRAFT MAINTENANCE MANUAL
VOR -ND VOR NCD DISPLAYS
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VOR -ND VOR INVALID DISPLAYS
General
The inputs that are necessary for VOR displays are:
*
Bearing from the VOR/MB receivers
*
Frequencies from the CDU or the AIMS cabinets
*
Selected course from the CDUs or the AIMS cabinets.
When one of these inputs change to an invalid condition, some of the VOR displays change.
Bearing Invalid
When the VOR/MB receiver bearing goes invalid, these changes occur for the VOR displays:
*
Show amber VOR flag
*
Remove to/from pointer and indication.
*
Remove VOR deviation bar and scale
Frequency Invalid
When the frequency input goes invalid, these changes occur for the VOR displays:
*
Remove the VOR frequency or identifier
*
Remove the to/from pointer and indication
*
Remove the VOR deviation bar.
Selected Course Invalid
When the selected course input goes invalid, these changes occur for the VOR display:
*
Remove the VOR frequency or identifier
*
Remove the selected course number
*
Remove the selected course arrow
*
Remove the VOR deviation bar and scale
*
Remove the to/from pointer and indication.
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