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both PULL UP lights.
The upper cut-off limit is 2 450 ft radio altitude.
The lower cut-off limit is 10 ft radio altitude.
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 2/10
FCOM 19 AUG 10
MODE 2 : EXCESSIVE TERRAIN CLOSURE RATE
Applicable to:
(*) The upper cut-off limit varies from 1 650 to 2 450 ft radio altitude, depending on speed
(between 220 to 310 kt). At certain airports, the upper boundary may be lowered down to
1 250 ft to reduce the warning sensitivity and minimize the nuisance warnings.
2A — FLAPS NOT IN LANDING CONFIGURATION, AND AIRCRAFT NOT ON THE GLIDESLOPE
BEAM.
Penetration of the boundary causes the GPWS lights to come on, and generates the repeated
aural alert : “TERRAIN”.
After “TERRAIN” has sounded twice, the warning switches to “PULL UP”, and is continually
repeated until the aircraft leaves the warning envelope. In addition, the PULL UP lights come on.
After the aircraft leaves the boundary, the PULL UP lights stay on and the “TERRAIN” aural
message persists. These alerts stop when the aircraft increases either the barometric or inertial
altitude by 300 ft. If it enters another alert region during this altitude-gain time, then the whole
process begins again with a new reference altitude for the 300 ft altitude gain.
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 3/10
FCOM 19 AUG 10
2B — THE FLAPS ARE IN LANDING CONFIGURATION
Lowering the flaps to the landing position automatically switches GPWS to Mode 2B. In this case
lower boundary varies between 200 ft and 600 ft depending on radio altitude rate of change. ILS
approach (glide slope deviation < ± 2 dots) the lower boundary is fixed at 30 ft .
When the aircraft enters the envelope, the alert is the same as for mode 2A. When gear and flaps
are in the landing configuration, the aural message is “TERRAIN ” only and is not followed by
“PULL UP” if the aircraft remains in the envelope.
MODE 2 : EXCESSIVE TERRAIN CLOSURE RATE
Applicable to:
,
,
MSN,,,,
(*) The upper cut-off limit varies from 1 650 to 2 450 ft radio altitude, depending on speed
(between 220 to 310 kt). At certain airports, the upper boundary may be lowered down to
1 250 ft to reduce the warning sensitivity and minimize the nuisance warnings.
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 4/10
FCOM 19 AUG 10
2A — FLAPS NOT IN LANDING CONFIGURATION, AND AIRCRAFT NOT ON THE GLIDESLOPE
BEAM.
Penetration of the boundary causes both PULL UP lights to come on, and generates the repeated
aural alert : “TERRAIN”.
After “TERRAIN” has sounded twice, the warning switches to “PULL UP”, and is continually
repeated until the aircraft leaves the warning envelope.
After the aircraft leaves the boundary, the PULL UP lights stay on and the voice message
“TERRAIN” persists. These alerts cease when the aircraft increases either the barometric or
inertial altitude by 300 ft. If it enters another alert region during this altitude-gain time, then the
whole process begins again with a new reference altitude for the 300 ft altitude gain.
The new enhanced operational upper limit is reduced to 1 250 ft and to 789 ft in final approach,
when the enhanced functions and the Geometric Altitude are of high integrity.
2B — THE FLAPS ARE IN LANDING CONFIGURATION
Lowering the flaps to the landing position automatically switches GPWS to Mode 2B. In this case
lower boundary varies between 200 ft and 600 ft depending on radio altitude rate of change. ILS
approach (glide slope deviation < ± 2 dots) the lower boundary is fixed at 30 ft .
When the aircraft enters the envelope, the alert is the same as for mode 2A. When gear and flaps
are in the landing configuration, the aural message is “TERRAIN ” only and is not followed by
“PULL UP” if the aircraft remains within the envelope.
MODE 3 : ALTITUDE LOSS AFTER TAKEOFF
Applicable to: ALL
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 5/10
FCOM 19 AUG 10
If the aircraft descends during the initial takeoff climb or during a go-around, the “DON’T SINK” aural
　
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