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and AP/FD 2 are not available.
DISPLAY
Here are listed some examples of function engagement,
selection of required guidance modes and flight
parameters.
The FCU allows:
- engagement of autopilots, Flight Directors and
autothrust,
- selection of guidance modes; e.g. heading,
Vertical Speed or track, Flight Path Angle,
- selection and display of the various
guidance targets whenever a manual
selection is required (SPD - HDG - TRK -
V/S - FPA - ALT).
TMUFM2004-T01 LEVEL 3
EFFECTIVITY 22-81-00 Page 2
Jul 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 22 AUTO FLIGHT SYSTEM
UF94200
EFFECTIVITY Page 126
ALL
FLIGHT CONTROL UNIT DESCRIPTION/OPERATION - GENERAL / DISPLAY
TMUFM2004-P01 LEVEL 3
EFFECTIVITY 22-81-00 Page 3
Jul 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 22 AUTO FLIGHT SYSTEM
UF94200
EFFECTIVITY Page 127
ALL
FLIGHT CONTROL UNIT DESCRIPTION/OPERATION
SPEED/MACH REFERENCE CONTROL KNOB
The speed/Mach reference control knob can be pushed
or pulled. It is spring-loaded to neutral. It can also
be turned.
PULLED:
When pulled, the FMGC uses a selected reference speed
which is displayed on the FCU. The associated MANAGED
SPD/MACH DOT light is off.
- If the speed window was previously dashed, the
value which appears is generally the last
managed reference speed.
- If not, there is no change in the window.
TURNED:
When turned, it changes the displayed speed.
- If a speed was previously displayed, the
selected reference speed is modified.
- If the speed window was previously dashed, the
first click changes the dashes into the managed
reference speed. When turned more, this value
changes.
If the knob is not pulled within 45 seconds
the display reverts to dashes.
PUSHED:
When pushed, dashes are displayed and the associated
MANAGED SPD/MACH DOT light comes on.
The FMGC uses a managed reference speed.
- If dashes are displayed, there is no change.
- If a speed was previously displayed, dashes
appear and the light comes on.
The reference becomes a managed speed.
NOTE: For Take-Off, Go-Around and expedite, the FMGS
automatically uses memorized speeds such as V2,
VAPP and Green dot.
Dashes are displayed and the light is on.
SPEED/MACH SWITCHING
The speed/Mach pushbutton is only active when a value
is displayed in the speed window.
In all cases, the speed/Mach switching is automatic.
The pilot can only perform the switching using the
speed/Mach pushbutton when the reference is selected.
The appropriate indication (SPD or MACH) is then
displayed.
TMUFM2004-T02 LEVEL 3
EFFECTIVITY 22-81-00 Page 4
Jul 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 22 AUTO FLIGHT SYSTEM
UF94200
EFFECTIVITY Page 128
ALL
FLIGHT CONTROL UNIT DESCRIPTION/OPERATION -
SPEED/MACH REFERENCE CONTROL KNOB / SPEED/MACH SWITCHING
TMUFM2004-P02 LEVEL 3
EFFECTIVITY 22-81-00 Page 5
Jul 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 22 AUTO FLIGHT SYSTEM
UF94200
EFFECTIVITY Page 129
ALL
FLIGHT CONTROL UNIT DESCRIPTION/OPERATION
HEADING/TRACK LATERAL CONTROL KNOB
The lateral control knob can be pushed or pulled. It
is spring-loaded to neutral. It can also be turned.
The LAT window displays a value when heading or track
mode is active or when a heading or track preset has
been performed. It is dashed in all other cases.
The light is on when a managed lateral mode is armed
(e.g. NAV, RWY, LAND...)
PULLED:
When pulled, heading or track mode engages with a
reference displayed on the FCU. The associated light
is off.
- If the LAT window was previously dashed, the
value which appears is the present heading or
track.
- If not, there is no change in the window.
TURNED:
When turned, it changes the displayed heading or track.
- If a heading or track was previously displayed,
the selected reference is modified.
- If the LAT window was previously dashed, the
first click changes the dashes into the present
A/C heading or track. When turned more, the
value changes.
If the knob is not pulled within 45 seconds
the display reverts to dashes.
PUSHED:
When pushed, the navigation mode is armed.
During the arming phase, the heading or track is
displayed until interception of the flight plan.
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ATA 22 AUTO FLIGHT SYSTEM(25)
