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OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - GENERAL
PILOT INTERFACE - MCDU
A318/A319/A320/A321 FLEET DSC-22_10-40-10 P 4/22
FCOM 19 AUG 10
Applicable to:
,
,
MSN,,
4538,,
MCDU INTERFACE
Applicable to:
GENERAL
The Multipurpose Control and Display Unit (MCDU) is a cathode ray tube that generates 14 lines
of 24 characters each, including:
A title line that gives the name ‐ of the current page in large letters
‐ Six label lines, each of which names the data displayed just below it (on the data field line)
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - GENERAL
PILOT INTERFACE - MCDU
A318/A319/A320/A321 FLEET DSC-22_10-40-10 P 5/22
FCOM 19 AUG 10
‐ Six data field lines that display computed data or data inserted by the flight crew
‐ The scratchpad line that displays:
• Specific messages
• Information the flight crew has entered by means of the number and letter keys and which
can then be moved to one of the data fields.
Applicable to:
,
,
MSN,,
4538,,
GENERAL
The Multipurpose Control and Display Unit (MCDU) has a Liquid Crystal Display (LCD) with 14
lines of 24 characters each, including:
‐ A title line that gives the name of the current page in large letters
‐ Six label lines, each of which nhames the data displayed just below it (on the data field line)
‐ Six data field lines that display computed data or data inserted by the flight crew
‐ The scratchpad line that displays:
• Specific messages
• Information the flight crew has entered by means of the number and letter keys and which
can then be moved to one of the data fields.
Applicable to: ALL
LINE SELECT KEYS
There is a column of Line Select Keys (LSKs) on each side of the screen.
The flight crew uses these keys to:
Move a parameter they have entered in the scratchpad ‐ to the appropriate line on the main
screen
‐ Call up a specific function page indicated by a prompt displayed on the adjacent line
‐ Call up lateral or vertical revision pages from the flight plan page.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - GENERAL
PILOT INTERFACE - MCDU
A318/A319/A320/A321 FLEET DSC-22_10-40-10 P 6/22
FCOM 19 AUG 10
Applicable to:
KEYBOARD
The keyboard includes:
‐ Function and Page
keys
Call up functions and pages the flight crew uses for flight management
functions and computations.
↑ ↓ (or SLEW) keys Move a page up or down to display portions that are off the screen.
NEXT PAGE key Moves to the next page of a multi-page element. An arrow in the top right
corner indicates that another page is available.
AIRPORT key Calls up the flight plan page that contains the next airport along the
current flight plan. Successive pushes on the key show the alternate
airport, the origin airport (before takeoff), and the next airport again.
‐ Number and letter keys allow the flight crew to insert data in the scratchpad so that they can use
a line select key to enter it in the main display.
‐ Two keys have special functions:
CLR (clear) key Erases material (messages or inserted data) from the scratchpad or from
certain areas of displayed pages.
OVFY (overfly) key Allows the aircraft to overfly a selected waypoint.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - GENERAL
PILOT INTERFACE - MCDU
A318/A319/A320/A321 FLEET DSC-22_10-40-10 P 7/22
FCOM 19 AUG 10
Applicable to:
,
,
MSN,
4719,,,
KEYBOARD
The keyboard includes:
‐ Function and Page
keys
Call up functions and pages the flight crew uses for flight management
functions and computations.
↑ ↓ (or SLEW) keys Move a page up or down to display portions that are off the screen.
← → keys Moves to the next page of a multi-page element. An arrow in the top right
corner indicates that another page is available.
AIRPORT key Calls up the flight plan page that contains the next airport along the
current flight plan. Successive pushes on the key show the alternate
airport, the origin airport (before takeoff), and the next airport again.
‐ Number and letter keys allow the flight crew to insert data in the scratchpad so that they can use
a line select key to enter it in the main display.
‐ Three keys have special functions:
CLR (clear) key Erases material (messages or inserted data) from the scratchpad or from
certain areas of displayed pages.
OVFY (overfly) key Allows the aircraft to overfly a selected waypoint.
　
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