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and approach phases.
CONSTANT MACH PAGE
Applicable to:
,
,
MSN,,
4538,,
The CONSTANT MACH page allows the crew to specify a constant Mach value to be kept during a
given part of the cruise phase. The crew can specify on this page :
‐ The desired constant Mach value
‐ The Start and End waypoint of the constant Mach segment.
The constant Mach segment is flown in MANAGED speed mode. The FMS takes the crew-entered
constant Mach into account to calculate the cruise predictions.
Note: A constant Mach may also be defined in the SEC F-PLN.
The CONSTANT MACH page is accessed by pressing the CONSTANT MACH prompt [4L] on the
VERT REV page from any waypoint, including the FROM waypoint.
The CONSTANT MACH page is accessible in pre-flight, takeoff, climb and cruise phases. A constant
Mach may only be defined between two cruise waypoints.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
CONTROLS AND INDICATORS - MCDU - PAGE DESCRIPTION
A318/A319/A320/A321 FLEET DSC-22_20-50-10-28 P 124/126
FCOM 19 AUG 10
[ 1L ] MACH (blue) Enables the entry of the desired Mach value.
[ 2L ] START WPT (blue) Enables the Start waypoint of the constant Mach segment to be
specified. The default Start waypoint is the waypoint at which the
vertical revision has been performed, if it belongs to the cruise phase.
Otherwise, the field is blank.
The default Start waypoint (if any) is displayed in small blue font. The
crew may select a different Start waypoint in the list of selectable
F-PLN waypoints. A crew-selected Start waypoint is displayed in large
blue font.
SELECTABLE F-PLN WPTS
(blue) [ 3L ] – [ 3R ] [ 4L ] –
[ 4R ] [ 5L ] – [ 5R ]
This is the list of the F-PLN waypoints that can be selected as Start or
End waypoint of the constant Mach segment. The FMS automatically
displays the list of all downpath waypoints belonging to the cruise
phase (before the T/D). The crew selects the Start waypoint in the list
on the left side, and the End waypoint on the right side.
[ 6L ] < RETURN (white) or <
TMPY F-PLN (yellow)
Enables the entry of the desired Mach value. If a temporary F-PLN
exists, the prompt
If no TMPY F-PLN exists, the < RETURN prompt is displayed. It
enables a return to the VERT REV page.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
CONTROLS AND INDICATORS - MCDU - PAGE DESCRIPTION
A318/A319/A320/A321 FLEET DSC-22_20-50-10-28 P 125/126
FCOM 19 AUG 10
[ 2R ] END WPT (blue) This field enables the End waypoint of the constant Mach segment to
be specified. By default, the End waypoint is the Top of Descent (T/D).
The default End waypoint is in small blue font. The crew may select
a different End waypoint in the list of selectable F-PLN waypoints. A
crew-selected End waypoint is displayed in large blue font.
[ 6R ] CONSTANT MACH
DELETE* (white)
This prompt enables the deletion of the constant Mach. It is displayed
only when a constant Mach has been previously-defined.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
CONTROLS AND INDICATORS - MCDU - PAGE DESCRIPTION
Intentionally left blank
A318/A319/A320/A321 FLEET DSC-22_20-50-10-28 P 126/126
FCOM 19 AUG 10
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT MANAGEMENT
CONTROLS AND INDICATORS - MCDU - MESSAGES
A318/A319/A320/A321 FLEET DSC-22_20-50-20-30 P 1/8
FCOM 19 AUG 10
FMS LEGACY
MCDU MESSAGE LIST
Applicable to:
Messages displayed on the MCDU are of two types and displayed in two colors.
Type I : a direct result of a pilot action
Type II : information about a situation or a call for pilot action
Type II messages are stored in a first-in/first-out message queue (5 messages max.)
They are suppressed if correct data is entered or when they no longer apply.
The flight crew can clear all messages by pressing the CLEAR key on the MCDU console.
Amber : important
White : less important
MESSAGE TYPE/COLOR CONDITIONS
A/C POSITION INVALID II/A The aircraft position has become invalid. If the message has
been cleared and the flight crew attempts to call up the HOLD
at PPOS or DIR TO page while the aircraft position is still
invalid, then the message is displayed again.
ACT RTE UPLNK ��
(ACARS msg)
II/W A flight plan is stored in the active flight plan.
ALIGN IRS II/A Appears when the IRS are ready for alignment, but the INIT
　
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