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NAVIGATION
WEATHER RADAR - ELECTRICAL SUPPLY
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A318/A319/A320/A321 FLEET DSC-34-60-50 P 2/2
FCOM 19 AUG 10
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
NAVIGATION
GPWS - DESCRIPTION
A318/A319/A320/A321 FLEET DSC-34-70-10 P 1/4
FCOM 19 AUG 10
DESCRIPTION
Applicable to:
The Ground Proximity Warning System (GPWS) generates aural and visual warnings, when one of
the following conditions occurs between radio altitudes 30 and 2 450 ft.
Mode ‐ 1 : Excessive rate of descent.
‐ Mode 2 : Excessive terrain closure rate
‐ Mode 3 : Altitude loss after takeoff, or go-around.
‐ Mode 4 : Unsafe terrain clearance, when not in landing configuration.
‐ Mode 5 : Too far below glideslope.
In addition to the basic GPWS functions, the GPWS has an enhanced function (EGPWS) which
provides, based on a worldwide terrain database :
‐ A Terrain Awareness Display (TAD), which predicts the terrain conflict, and displays the terrain on
the ND.
‐ A Terrain Clearance Floor (TCF), which improves the low terrain warning during landing.
The cockpit loudspeakers broadcast, even when turned off, the aural warning or caution messages
associated with each mode. The audio volume of these messages is not controlled by the
loudspeaker volume knobs. (These knobs only allow volume adjustment for radio communication).
PULL UP or GPWS lights, on the Captain and First Officer instrument panels, come on to give a
visual indication depending on the engaged GPWS mode .
Note: A number of airports throughout the world have approaches or departures that are not
entirely compatible with standard GPWS operation. These airports are identified in the data
base in such a way that when the GPWS recognizes such an airport, it modifies the profile
to avoid nuisance warnings.
DESCRIPTION
Applicable to:
,
,
MSN,,,,
The Ground Proximity Warning System (GPWS) generates aural and visual warnings, when one of
the following conditions occurs between radio altitudes 30 and 2 450 ft.
Mode ‐ 1 : Excessive rate of descent.
‐ Mode 2 : Excessive terrain closure rate
‐ Mode 3 : Altitude loss after takeoff, or go-around.
‐ Mode 4 : Unsafe terrain clearance, when not in landing configuration.
‐ Mode 5 : Too far below glideslope.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
NAVIGATION
GPWS - DESCRIPTION
A318/A319/A320/A321 FLEET DSC-34-70-10 P 2/4
FCOM 19 AUG 10
In addition to the basic GPWS functions, the GPWS has an enhanced function (EGPWS) which
provides, based on a worldwide terrain database :
‐ A Terrain Awareness Display (TAD), which predicts the terrain conflict, and displays the terrain on
the ND.
‐ A Terrain Clearance Floor (TCF), which improves the low terrain warning during landing.
The EGPWS uses the geometric altitude. The geometric altitude is calculated by means of a specific
algorithm that uses the following as inputs : The pressure altitude, GPS altitude, radio altitude, and
data from the terrain database.
The cockpit loudspeakers broadcast, even when turned off, the aural warning or caution messages
associated with each mode. The audio volume of these messages is not controlled by the
loudspeaker volume knobs. (These knobs only allow volume adjustment for radio communication).
PULL UP or GPWS lights, on the Captain and First Officer instrument panels, come on to give a
visual indication depending on the engaged GPWS mode .
Note: A number of airports throughout the world have approaches or departures that are not
entirely compatible with standard GPWS operation. These airports are identified in the data
base in such a way that when the GPWS recognizes such an airport, it modifies the profile
to avoid nuisance warnings.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
NAVIGATION
GPWS - DESCRIPTION
A318/A319/A320/A321 FLEET DSC-34-70-10 P 3/4
FCOM 19 AUG 10
SCHEMATIC
Applicable to: ALL
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
NAVIGATION
GPWS - DESCRIPTION
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A318/A319/A320/A321 FLEET DSC-34-70-10 P 4/4
FCOM 19 AUG 10
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
NAVIGATION
GPWS - GPWS BASICS MODES
A318/A319/A320/A321 FLEET DSC-34-70-20 P 1/10
FCOM 19 AUG 10
MODE 1 : EXCESSIVE RATE OF DESCENT
Applicable to: ALL
Mode 1 has two boundaries. Penetration of the first boundary generates a repeated “SINK RATE”
aural alert . Penetration of the second boundary generates a repetitive “PULL UP” and illuminates
　
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