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FREQ - The VOR station frequency (may be manually entered).
RADIAL - The radial from the VOR to the aircraft’s present position.
If no VOR radial is received, the radial field will be blank.
DIST - The received DME distance in NM from the VOR to the
aircraft’s present position. If no DME is associated with the VOR or
no distance is received, a computed distance will be displayed in
parenthesis.
Section VII
Sensors & Interfaces
2423sv602 7-7
Change 1
TEST - Pressing this line select key places the cursor over the VOR
station frequency. Frequency may be manually entered.
BACKUP/RRS - Only indicated when an RRS is installed. The RRS
or a backup VOR receiver can be alternately selected. When
backup information is being used, the pilot must manually select
VOR frequencies via Nav control head.
DESEL VOR/SELECT VOR - This line select key is used to
alternately select or deselect the VOR. When deselected, “(D)” is
displayed following the VOR status.
NOTE: If an RRS is installed the VOR test in accordance with
FAR Part 91.25 is performed on this page by entering the
appropriate VOR frequency.
During system initialization and ground operations, the VOR will be
deselected. Upon takeoff, the VOR will automatically be selected. In
the event of an aircraft weight-on-gear failure, the VOR will
automatically be selected when the TAS reaches 150 kts.
Manual VOR Station Selection
This procedure provides the pilot with the option of directing the
computer to tune, and constantly display, one specific VOR station.
1. Access the VOR Status page by pressing the DATA function key
to access DATA page 2 and then selecting the [VOR] option.
2. Press the [IDENT] line select key to position the cursor over the
IDENT entry field.
3. Enter the identifier of the desired VOR using the LIST function.
STATUS MANUAL indicates a manual selection.
Return To Automatic VOR Station Selection
1. Access the VOR Status page by pressing the DATA function key
to access DATA page 2 and then selecting the [VOR] option.
2. Press CANCEL MANUAL line select key [3R].
3. VOR automatically reverts to nearest VOR station and indicates
STATUS NORMAL.
Section VII
Sensors & Interfaces
7-8 2423sv602
Change 1
TACAN
The TACAN Status and data are on the TACAN Status page. The
page is accessed from DATA page 2 and is accessible only when an
RRS or a TACAN is configured.
STATUS - This is the operational status of the TACAN. The status
displayed will either be NORMAL or FAILED.
IDENT - The TACAN station identifier. If RRS is installed the LIST
key can be used to manually select station by Ident.
CHAN - The TACAN station channel. If RRS is installed the
Channel number may be manually entered.
RADIAL - The radial from the TACAN to the aircraft’s present
position. If no TACAN radial is received, the radial field will be blank.
DESEL TACAN/SELECT TACAN - This line select key is used to
alternately select or deselect the TACAN Sensor. When deselected,
“(D)” is displayed following TACAN status.
TEST - Pressing this line select key places the cursor over the
TACAN Channel. Channel may be entered manually for the test.
Test is canceled by again pressing the CANCEL TEST line select
key [2R].
DIST - The received DME distance in NM from the TACAN to the
aircraft’s present position. When the station is first tuned a
computed distance will be displayed in parentheses until the station
is identified.
Section VII
Sensors & Interfaces
2423sv602 7-9
Change 1
DESEL TACAN/SELECT - This line is used to alternately select or
deselect the TACAN. When deselected, “(D)” is displayed following
the TACAN status.
During system initialization and ground operations, the TACAN will
be deselected. Upon takeoff, the TACAN will automatically be
selected. In the event of an aircraft weight-on-gear switch failure,
the TACAN will automatically be selected when the TAS reaches
150 kts.
Manual TACAN Station Selection
4. This procedure provides the pilot with the option of directing the
computer to tune, and constantly display, one specific TACAN
station.
5. Access the TACAN Status page by pressing the DATA function
key to access DATA page 2 and then selecting the [TACAN]
option.
6. Press the [IDENT] line select key to position the cursor over the
IDENT entry field.
7. Enter the identifier of the desired TACAN using the LIST
function. STATUS MANUAL indicates a manual selection.
Return To Automatic TACAN Station Selection
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