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clock time by the use of plus (+) sign, clock times use the colon (:)
separation.
TO - The name of the current ‘TO’ waypoint and ETA. Under the TO
waypoint is displayed the course, distance and ETE to the next (NX)
waypoint.
The name of the NX waypoint and ETA.
On the right side of the page line select keys [1R], [2R] and [3R] are
used to access or perform special functions.
HDG - Pressing this line select key will access the FMS HEADING
mode (NAV HEADING page).
Section II
Control & Display
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Change 1
MNVR - Pressing this line select key will access the MNVR
(maneuver) definition page. From this page, PVOR, SXTK and
Holding Patterns can be defined and activated.
ARM APPR or ACT APPR - Pressing this line select key will access
the FMS APPROACH mode if there is an approach programmed into
the flight plan. If the approach geometry is invalid, this selection will
be shown in small green characters with no arrow. When the
approach geometry is valid, the selection will change to the normal
large orange characters with an arrow ready for selection.
The following supplementary information appears below the line:
XTK (crosstrack), distance left or right of desired course. XTK is
appended with (E), (T) or (A) indicating enroute, terminal or
approach HSI scaling. A manual selected cross track may be
entered in this field
HEADWIND/TAILWIND, displays wind speed.
WIND displays wind direction or speed.
GS displays current groundspeed.
BRG displays bearing from present position to current TO waypoint.
For procedural heading legs, desired heading is displayed in this
field.
TKE, track angle error is the difference between the aircraft actual
track and desired track. For procedural heading legs this displays
field heading error which is the difference between desired heading
and heading.
Section II
Control & Display
2423sv602 2-19
Change 1
NAV Page 2 (NAV Position)
NAV page 2 shows the FMS system position and the quality factor
(FMS# Q=) associated with the FMS best computed position.
Shown beneath the quality factor is the most significant sensor.
Refer to DATA page 2 (Sensor Summary page) for a listing of the
sensors which may be displayed and a discussion of the quality
factor (Q). NAV page 2 is accessed by pressing the NAV function
key, or the PREV or NEXT key, while NAV page 1 is displayed.
FMS# POS - Pressing either line select key will access the DEFINE
POSITION page for entry of present position coordinates. <POS>
will be displayed in the "WPT" entry field.
HOLD POS - Pressing this line select key will access the HOLD
POSITION page.
UPDATE SENS - Pressing this line select key will send current FMS
Best Computed Position latitude/longitude to VLF/OMEGA sensors.
(Note: Pressing this key will cause no change in this page display).
SENSORS - Pressing this line select key will access DATA page 3
(FMS Position Page).
VNAV KEY
The vertical navigation key provides access to the VNAV function
which allows the flight crew to define a desired vertical flight profile
along the flight plan route. It then computes the aircraft deviation
from that profile for display.
Section II
Control & Display
2-20 2423sv602
Change 1
VNAV Function
The flight profile is defined by two waypoints with reference altitudes,
by the aircraft present position plus one waypoint ahead of the
aircraft, or by one waypoint ahead of the aircraft and a target vertical
speed. A flight profile which results in a climb will provide VSR
(Vertical Speed Required) information only. Vertical waypoint
identifiers are prefilled automatically with the current flight plan
waypoints (but with no offsets or altitudes).
DTO Key
The DTO (direct to) key accesses the DTO function and is
specifically dedicated to changing the flight plan in response to
"direct to" clearances. If the "direct to" location is off the flight plan,
provisions are made to link the location into the flight plan.
DTO Function
The DTO (direct to) key provides a dedicated function for altering the
flight plan in response to "direct to" clearances. When the DTO
page is displayed, a leg change from the present position (PP) direct
to a flight plan waypoint, a database waypoint, a pilot defined
location, or an airport may be made. A DTO command will cancel
approach mode and VNAV operation. The turn direction will default
to shortest turn; however the pilot can override this by specifying
LEFT or RIGHT direction. Pressing AUTO will cancel LEFT or
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