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Flight Mode Annunciation
The FMA section on PFD displays current armed and engaged modes, autoight status, and approach capabilities.
AUTOFLIGHT
Autothrust
modes
Vertical
Active
Lateral
Active
Autoight
status
Vertical
Armed
Lateral
Armed
Approach
capabilities
Active vertical and lateral modes are normally shown in green, armed modes are displayed in blue. When a mode is replaced by
another mode, it’s indication is boxed in white for several seconds.
When autoland common modes LAND, FLARE or ROLLOUT are active, the mode name is written across lateral and vertical
mode columns.
Approach capabilities are only shown when LOC and G/S modes are armed or active. This column also displays Decision Height
(DH) or Minimum Descent Altitude (MDA), if an entry is made on MCDU.
Autoight status column includes information on active autopilots, active ight directors, and autothrust status. A/THR is shown in
blue when autothrust is armed, in white when it is active, and is removed if autothrust is off.
A319/320/321
Systems Manual
Phoenix Simulation Software P 40
REV 01 SEQ 001 MCDU
Overview
The Multi-Function Control and Display Unit (MCDU) is the primary pilot
interface with the ight management system. It is used ight plan entry,
monitoring and revision, insertion of gross weight, fuel, temperatures, etc.
The MCDU contains a display screen, line select keys, and a keyboard.
The color MCDU screen has 14 lines. The top line displays page title.
Most pages contain data elds, with labels above them. MCDU keyboard
input appears on the bottom line, called the Scratchpad. Left and right Line
Select Keys (LSK) are located next to screen lines. LSKs are used to insert
information from scratchpad into corresponding eld, to select on-screen
prompts, etc.
Some pages have additional sub-pages avaiable. In this case, a next page
arrow is drawn in the top right corner of the screen, on the title line. Next
page in a page set is displayed by pressing the NEXT PAGE button on
MCDU keyboard.
Some pages, such as F-PLAN page shown here, contain many lines and
some of them do not t on the display. This is indicated by white Scroll
arrows in bottom right corner of the display. The display can be scrolled line
by line using the Slew (arrow) keys on the MCDU keyboard.
Data is entered into any displayed eld by typing the data on MCDU
keyboard - the entry appears on scratchpad - and then pressing a Line
Select Key (LSK) adjacent to desired eld.
Some elds contain prompts. Fields marked with Carets (‘<’ or ‘>’) will call
up different MCDU page when selected with LSK. Fields containing an
arrow prompt will perform certain action when selected.
Color use
Different colors are used to simplify interpretation of displays. These general rules are used:
WHITE is used to display titles, data eld labels, page selection prompts, and messages. Data regarding “TO” waypoint and
destination is also white.
BLUE indicates data which can be modied by the pilot. Alternate ight plan is also shown in blue.
AMBER indicates mandatory entry elds, and prompts which require pilot conrmation.
GREEN is used to display data that cannot be modied by pilot. Active route waypoints except “TO” are also shown in green.
YELLOW is used to display a temporary ight plan.
Keyboard
The keyboard contains alpha-numeric keys for data entry, page selection keys, and some special keys. Page selection keys in
the upper part call up corresponding MCDU page. CLR key erases input from the scratchpad, character at a time. If scratchpad
is empty, pushing CLR will display “CLR” on scratchpad; this is used to clear or revert to defaults the data elds which support
clearing.
OVFY key is used to mark a waypoint on ight plan as Overy waypoint.
Slash (‘/’) is used to separate parts of entries for elds which support two entries at once (for example, speed and altitude entry
for constraint waypoint).
For ease of MCDU keyboard entry, you can use your PC keyboard. The input method is dened using the Panel Conguration
Utility. It defaults to holding down Ctrl and Windows keys while performing an entry.
A319/320/321
Systems Manual
Phoenix Simulation Software P 41
REV 01 SEQ 001 MCDU
General principles
Flight plans
The ight plans represent the routing between the origin and destination airports, and consist of a set of waypoints. A ight plan can
　
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