2. D.
(6) (k) F1ight Plan Scroll Mode
- Once a flight plan has been selected
for display, the crew can then scroll through the entire flight
plan using the FPLN SCROLL buttons on the display controller
(Figure 221). Selection of the scroll FORE allows the pilot to
move the waypoints of the active flight plan one at a time
through the center of the plan range ring in the forward
(origin to destination) direction. Selection of the scroll
BACK allows the pilot to move the waypoints of the active
flight plan one at a time through the center of the plan range
ring in the backward (destinationto origin) direction.
The maximum number of waypoints that can be displayed at one
time is limited to 16.
The 16-waypoint window for scrolling
purposes is made up of the past three FROM waypoints and the TO
through the TO+12 waypoints.
The scroll window and selected
range will determine the number of waypoints that will be
displayed while scrolling the flight plan.
(7) PLAN Caution and Warning Displays
(a) IRS Failures and Flags -
Failure of the displayed heading is
shown by removing the active flight plan and wind display and
displaying, in red, the label HDG FAIL at the top center of the
plan range ring (Figure 222).
IRS test mode is shown with the label HDG TEST
in the same
location as the fail annunciation discussed above (see
Figure 216).
(b) FMS Failure - A failure of the FMS removes the active flight
plan, navaids, and airports from the display. This indication
will also be given
in the event of an invalid heading display
(Figure 222).
The digital GPSD window is replaced by amber
dashes.
(c) DADC Failures, Weather Radar Failures - The same indications
are given as previously described in the MAP mode (paragraph
2.D.(3)(c)).
(d) EFIS Self-Test
- This test is initiated through the on-side
display controller TEST mode when airspeed is valid and less
than 60 knots and the WOW switch is active.
Selecting the EFIS
self test shows the invalid flags for the following plan
display parameters:
. IRS
● DADC
. VERT TRK, TRK CHG Annunciations
22-14-00
Page 259
Aug 15/91
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