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TMUFGCJ02-P01 LEVEL 3
EFFECTIVITY 22-00-00 Page 3
Jul 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 22 AUTO FLIGHT SYSTEM
UF94200
EFFECTIVITY Page 275
ALL
AUTO FLIGHT SYSTEM COMPONENTS
FLIGHT MANAGEMENT AND GUIDANCE COMPUTERS (FMGCs)
IDENTIFICATION
FIN: 1CA1, 1CA2
LOCATION
ZONE: 127, RACK 83VU (FMGC1)
128, RACK 84VU (FMGC2)
COMPONENT DESCRIPTION
The Flight Management and Guidance Computer (FMGC) is
a digital computer of 8MCU size in conformity with
ARINC specification 600.
It is to be noted that some boards in the computer are
equipped with a memory module (OBRM). The access to
these modules is from the outside of the unit.
The computer consists of two separate parts: A COMMAND
channel and a MONITOR channel.
The COMMAND channel ensures two functions: The
management of the flight and of the guidance.
The MONITOR channel only ensures the guidance function.
The two channels are physically separate:
- Each channel has its own power supply unit.
- The electronic boards assigned to each channel
are located in different zones in the computer
unit.
- The electrical routings are separate.
- The pin connections at the output connectors
are duplicated and separate.
At software level, the programming languages of the
COMMAND and MONITOR channels are different.
For the guidance function, the engage logic of the
autopilot (AP), Flight Director (FD) and autothrust
(A/THR) systems in COMMAND and MONITOR channels is
achieved in hard-wired circuitry.
TMUFGCJ02-T02 LEVEL 3
EFFECTIVITY 22-00-00 Page 4
Jul 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 22 AUTO FLIGHT SYSTEM
UF94200
EFFECTIVITY Page 276
ALL
AUTO FLIGHT SYSTEM COMPONENTS - FLIGHT MANAGEMENT AND GUIDANCE COMPUTERS (FMGCs)
TMUFGCJ02-P02 LEVEL 3
EFFECTIVITY 22-00-00 Page 5
Jul 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 22 AUTO FLIGHT SYSTEM
UF94200
EFFECTIVITY Page 277
ALL
AUTO FLIGHT SYSTEM COMPONENTS
FLIGHT CONTROL UNIT (FCU)
IDENTIFICATION
FIN: 2CA
LOCATION
ZONE: 211, PANEL 13VU
COMPONENT DESCRIPTION
The Flight Control Unit (FCU) comprises the Auto Flight
System (AFS) control section and the Electronic Flight
Instrument System (EFIS) control sections. It is
located on the glareshield.
The FCU consists of two identical totally independent
computers.
The computers (SIDE 1 and SIDE 2) have separate power
supplies.
They are built around an INTEL 80C31 8-bit
microprocessor.
Each side is associated with the controls on the front
panel of the unit.
The display is common to both sides, whereas the
signals are routed via separate paths.
TMUFGCJ02-T03 LEVEL 3
EFFECTIVITY 22-00-00 Page 6
Jul 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 22 AUTO FLIGHT SYSTEM
UF94200
EFFECTIVITY Page 278
ALL
AUTO FLIGHT SYSTEM COMPONENTS - FLIGHT CONTROL UNIT (FCU)
TMUFGCJ02-P03 LEVEL 3
EFFECTIVITY 22-00-00 Page 7
Jul 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 22 AUTO FLIGHT SYSTEM
UF94200
EFFECTIVITY Page 279
ALL
AUTO FLIGHT SYSTEM COMPONENTS
MULTIPURPOSE CONTROL AND DISPLAY UNITS (MCDUs)
IDENTIFICATION
FIN: 3CA1, 3CA2
LOCATION
ZONE: 211, PANEL 11VU
COMPONENT DESCRIPTION
The Multipurpose Control and Display Units (MCDUs)
provide access to the following:
- FMGC (Flight Management function),
- ATSU (Air Traffic Service Unit),
- AIDS (Aircraft Integrated Data System),
- CFDS (Centralized Fault and Display System).
They are composed of a keyboard and a screen for
entry/display between the pilot or the line maintenance
and the above systems.
The MCDU display contains 14 lines, each having 24
characters.
Of these 14 lines, the top line (line 1) is normally
used as a title line or to display data to which the
pilot does not have access. The bottom line (line 14)
is the scratchpad line and is used by the pilot to
alter the data in the data fields.
Lines 2 through 13 are data lines arranged into six
pairs (lines 2-3, 4-5, 6-7, 8-9, 10-11, 12-13). Each
pair of lines has a label line (the top of the two
lines) and a data line. The data lines are adjacent
to the line select keys, and the label line is just
above the data line.
The line pairs are referenced by line select keys.
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