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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 34 NAVIGATION
UF94200
EFFECTIVITY
ALL
34 NAVIGATION
UF94200 TABLE OF CONTENTS Page
34 CONTENTS
Page ii
Dec 31/00
34 - NAVIGATION
34-00-00 SYSTEM PRESENTATION
CONTENTS:
General
ADIRS
Landing and Taxiing Aids Systems
Independent Position Determining Systems
Dependent Position Determining Systems
TMUNA2001 LEVEL 1
EFFECTIVITY 34-00-00 Page 1
May 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 34 NAVIGATION
UF94200
EFFECTIVITY Page 1
ALL
SYSTEM PRESENTATION
GENERAL
The aircraft navigation systems provide the crew with
the data required for flight within the most
appropriate safety requirements.
This data is divided into four groups:
- AIR DATA/INERTIAL REFERENCE SYSTEM (ADIRS),
- LANDING AND TAXIING AIDS,
- INDEPENDENT POSITION DETERMINING,
- DEPENDENT POSITION DETERMINING.
ADIRS
The ADIRS is an integrated Air Data System and an
Inertial Reference System. One part called Air Data
Reference mainly computes speed and altitude
information from air parameters. The other part called
Inertial Reference mainly computes heading, attitude
and position from gyros and accelerometers.
The ADIRS is composed of three Air Data/Inertial
Reference Units (ADIRUs).
Besides the ADIRUs, there are still standby
instruments:
- Altimeter and Airspeed indicators directly
supplied by pressure lines,
- Standby Compass,
- Standby Horizon.
LANDING AND TAXIING AIDS
The Head-Up Display (HUD) is used as a piloting aids
system for roll out, take-off and landing (optional).
The Instrument Landing System (ILS), is use to obtain
the optimum aircraft position during an approach and
landing phase.
The Marker (MKR) system is used to indicate the
distance to the runway threshold during an ILS descent.
The aircraft is equipped with:
- 1 HUD (optional),
- 2 ILS,
- 1 MARKER (Included in the VOR receiver).
Frequency Control is achieved either automatically or
manually (through the MCDU) by the Flight Management
and Guidance Computers (FMGCs) or manually through the
Radio Management Panels (RMPs).
TMUNA2001-T01 LEVEL 1
EFFECTIVITY 34-00-00 Page 2
May 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 34 NAVIGATION
UF94200
EFFECTIVITY Page 2
ALL
TMUNA2001-P01 LEVEL 1
SYSTEM PRESENTATION
EFFECTIVITY 34-00-00 Page 3
May 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 34 NAVIGATION
UF94200
EFFECTIVITY Page 3
ALL
SYSTEM PRESENTATION
INDEPENDENT POSITION DETERMINING SYSTEMS
This part of the navigation systems, called independent
system, provides information regarding the safety of
the aircraft without taking reference from any ground
station.
The Weather Radar / Predictive Windshear (WR/PWS)
system detects the position and intensity of
precipitations which are shown on the Navigation
Displays (ND’s).
The windshear capability serves to detect any sudden
change of wind speed and/or direction (Optional).
The Radio Altimeter (RA) system gives the aircraft
height above the ground, independently of the
atmospheric pressure.
The Traffic Collision Avoidance System (TCAS) detects
the aircraft in the immediate vicinity.
The Enhanced Ground Proximity Warning System (EGPWS)
warns the flight crew about the aircraft behaviour in
dangerous configuration when approaching the ground.
This part of the Navigation system includes:
- 1 Weather Radar / Predictive Windshear (WR/PWS)
(the second is optional),
- 2 Radio Altimeter (RA),
- 1 Traffic Collision Avoidance System (TCAS),
- 1 Enhanced Ground Proximity Warning System
(EGPWS).
DEPENDENT POSITION DETERMINING SYSTEMS
This part of the navigation system, called dependent
system, provides various means of navigation through
data exchange with ground installations or satellites.
The Distance Measuring Equipment (DME) system gives
the aircraft slant distance to a ground station.
The Air Traffic Control system (ATC) enables a ground
operator to identify and track the aircraft without
having to communicate with the flight crew.
The Automatic Direction Finder (ADF) system is a radio
compass system providing the azimuth of a Non
Directional Beacon (NDB) with respect to the aircraft
center line.
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