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position of the airplane on the glideslope.
When the airplane descends more than 1.3 dots (but not more than 2 dots) below the glideslope, a
soft (6dB) aural “GLIDESLOPE” is generated. If the airplane continues to descend and deviates
more than 2 dots below the glideslope, an aural “GLIDESLOPE” warning is generated at the same
volume level as all other warnings. A GND PROX message is annunciated on the PFD. The aural
and visual alerts and warnings are continuously annunciated until the airplane exits the alert
envelope.
GLIDESLOPE
(SOFT)
GLIDESLOPE
NOTE
The "GLIDESLOPE" aural warning can be muted, using the GS WARN
switch on the engine control panel, located on the pedestal.
20
10
20
10
GF1710_074
GND
PROX
GND
PROX
20
10
20
10
MUTED
GF1710_075
MIN TERRAIN CLEARANCE (FEET)
GLIDESLOPE DEVIATION (DOTS FLY UP)
SOFT
"GLIDESLOPE"
HARD
"GLIDESLOPE"
0
1000
900
800
700
600
500
400
300
200
100
0 1 2 3 5
MODE 5 BELOW GLIDESLOPE ALERT
GEAR DOWN
RUNWAY
GLIDESLOPE
BEAM
CENTRE
HARD ALERT
SOFT ALERT AREA
AREA
HARD ALERT AREA
SOFT ALERT AREA
Mode 6 − Callouts
Mode 6 provides the following advisory alerts: transition through approach minimums, altitude
callouts on approach and excessive bank angles.
· Transition through the preset approach minimums, (APPROACHING DECISION HEIGHT or
APPROACHING MINIMUMS), generates an aural “MINIMUMS, MINIMUMS” warning. The
warning function is enabled between 1000 feet and 10 feet radio altitude for DH minimums
and when the corrected altitude exceeds the MDA value by 200 feet. The landing gear must
be down for activation of the warning.
NAVIGATION
Flight Crew Operating Manual REV 41, Jul 08, 2004
CSP 700−6
Volume 2
17−10−40
EGPWS MODES (CONT'D)
Mode 6 − Callouts (Cont’d)
· An altitude callout function generates annunciation for descent below predetermined
altitudes. The aural “ONE HUNDRED”, “FIFTY” and “THIRTY” indicates the transition
through 100, 50 and 30 feet AGL. The last annunciated or transition altitude is memorized.
This will prevent the repeat annunciation of a callout, should the airplane transition through
said altitudes again. The memory is cleared and reset, once the airplane climbs to an
altitude greater than 1000 feet, or in the event a transition occurs from approach mode to
takeoff
mode.
A “smart altitude callout” provides an aural “FIVE HUNDRED” at 500 feet radio altitude
during a nonprecision
approach. The callout is generated during a precision approach if the
airplane flight path deviates greater than ±2 dots of either the glideslope or localizer. The
callout is also generated during a backcourse approach.
RUNWAY
GF1710_076
"APPROACHING
MINIMUMS" "MINIMUMS" "FIFTY"
· The excessive bank angle alert is a function of the roll angle with respect to altitude above
ground level. The alert envelope varies linearly from a 10° bank at 30 feet AGL and to 40° of
bank at 150 feet AGL, to 55° of bank at 2450 feet AGL. This will generate an aural “BANK
ANGLE, BANK ANGLE”. The alert is annunciated once and will repeat if the bank angle
increases by 20%. The alert will be annunciated continuously if the bank angle is increased
to 55°. The alert will be annunciated until the bank angle is decreased below said value.
GF1710_077
+/−50
"BANK ANGLE
BANK ANGLE"
MIN TERRAIN CLEARANCE (FEET)
ROLL ANGLE (+ / − DEGREES)
0
2500
200
0 +/−10 +/−20 +/−30 +/−40
150 FEET
30 FEET
BANK ANGLE
CURVE
NAVIGATION
REV 41, Jul 08, 2004 Flight Crew Operating Manual
CSP 700−6
Volume 2
17−10−41
EGPWS MODES (CONT'D)
Mode 7 − Windshear Warning
Mode 7 provides alerts and warnings in the event that significant windshear is detected by the
EGPWC. Mode 7 is active during takeoff
and landing phase of flight only, between 10 and
1500 feet AGL. There are two types of windshear warnings: increasing performance
(updraft/headwind) and decreasing performance (downdraft/tailwind).
· When the EGPWC senses an increasing headwind (or decreasing tailwind) and/or a severe
updraft, an increasing performance annunciation WINDSHEAR will be posted on the PFD. It
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