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DATA Page 4 – General Data............................................2-14
Section II
Control & Display
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TABLE OF CONTENTS - CONTINUED
NAV Key ............................................................................ 2-15
NAV Function..................................................................... 2-15
NAV Page 1 (Normal Nav)................................................. 2-17
NAV Page 2 (Nav Position) ............................................... 2-19
VNAV Key .......................................................................... 2-19
VNAV Function .................................................................. 2-20
DTO Key ............................................................................ 2-20
DTO Function..................................................................... 2-20
FUEL Key........................................................................... 2-21
FPL Key ............................................................................. 2-21
Empty FPL Key............................................................... 2-22
Normal FPL Display Pages ............................................ 2-23
Flight Plan Summary Page............................................. 2-24
FPL Menu Pages............................................................ 2-25
PREF Key .......................................................................... 2-26
TUNE Key .......................................................................... 2-26
TUNE Operation ............................................................. 2-26
LIST Key ............................................................................ 2-28
MENU Key ......................................................................... 2-28
Section II
Control & Display
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INTRODUCTION
The FMS, provides the operator with all the controls necessary to
communicate with its navigation computer and associated navigation
sensors. A dimmable eleven-line color flat panel display uses two
character sizes and displays colors. Line select keys are located on
either side of the display. Function keys are immediately below the
display and an alphanumeric keyboard is below and to the right of
the function keys. The FMS provides for manual data entry, system
mode selection, computed and raw data displays, control (selection
and deselection) of navigational sensors, and system message
displays. The FMS may be used to tune the aircraft radios if a Radio
Tuning Unit (RTU) is installed, or when the aircraft is configured with
Collins Pro Line 4, or when an AN/ARN-118 TACAN is installed, or
when a 709 DME and 711 VOR is installed. When the FMS is
interfaced with a Universal Avionics UniLink data link system or AFIS
(Airborne Flight Information System) equipment, the FMS also
serves as the send/receive terminal for UniLink or AFIS messages.
GENERAL OPERATING PHILOSOPHY
Data is always entered into the system at a cursor location. When
appropriate, the cursor location aligns with one of the ten line select
keys which are used to control the cursor. The home position of the
cursor is usually off of the display when a page is initially accessed,
although some pages have a cursor default position which is on the
screen. Pressing the ENTER key completes the entry of data. If
there is a logical next field for data entry, the cursor will automatically
advance to this next field when the ENTER key is pressed.
Selections are made with the line select keys whenever possible. In
some cases a combination of line select keys and reference
numbers are used on the same display page. This allows two levels
of selection to exist simultaneously on the same display. For
example, while the line select keys control the contents or nature of
a list, an item from that list can be selected by using a reference
number.
Section II
Control & Display
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Some selections which will change the active flight plan, guidance of
the aircraft, or the stored data base require confirmation.
Confirmation is accomplished by pressing the line select key a
second time or by pressing the ENTER key. Selection of fields,
which do not require confirmation, will cause the page or mode
change to occur immediately when the corresponding line select key
is pressed.
KEYBOARD
5” FPCDU & UNS-1C/-1Csp 4” FPCDU
Alphabetic and Numeric Keyboards
The alphabetic and numeric keys are used to input characters into a
variable field marked by the cursor. The alphabetic keys are located
immediately below the function keys and the numeric keys are to the
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