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airplane is less than 2500 ft AGL. Mode 1 requires radio altitude and rate of descent data.
The annunciation envelope consists of two areas: alert and warning.
· Penetration of the alert area will annunciate a GND PROX alert on the PFD and generate an
aural “SINKRATE, SINKRATE”. The aural alert will be annunciated once and will be
repeated only if condition degrades by more than 20% based on computed time to impact.
The visual alert will remain until the condition is rectified.
· Penetration of the warning area will annunciate a PULL UP alert on the PFD and generate
an aural “PULL UP” warning. The aural warning is annunciated continuously until the
condition is rectified.
PULL UP
SINKRATE
SINKRATE
PULL UP
GF1710_060
20
GND
PROX
10
PULL
UP
20
10
20
10
20
10
2500
2000
1500
1000
500
0
0
"SINKRATE"
"PULL UP "
RADIO ALTITUDE (FEET)
GF1710_061
2000 4000 6000 8000
DESCENT RATE (FEET/MINUTE)
"SINKRATE"
"PULL UP "
NAVIGATION
Rev 2A, Apr 11, 2005 Flight Crew Operating Manual
CSP 700−5000−6
Volume 2
17−10−37
EGPWS MODES (CONT'D)
Mode 2 − Excessive Terrain Closure Rate
Mode 2 provides alerts and warnings when the EGPWC detects that the closure rate between the
airplane and terrain is excessive. The airplane need not be in descent, rising terrain may be
encountered in level flight, or the terrain may be rising at a rate greater than the airplane rate of
climb. Mode 2 uses radio altitude and vertical speed inputs.
PULL UP
TERRAIN
TERRAIN
PULL UP
GF1710_062
20
GND
PROX
10
PULL
UP
20
10
20
10
20
10
2500
2000
1500
1000
500
"TERRAIN
TERRAIN" "PULL UP"
TERRAIN CLOSURE RATE(FEET/MIN)
RADIO ALTITUDE (FEET)
GF1710_063
6000 8000
TER RAIN" " TER RAIN"
0
0 2000 4000 10000
"PULL UP"
Mode 2 has two submodes:
Mode 2A and Mode 2B.
· Mode 2A − Activated when flaps are not in the landing position. Penetration of the alert area
will annunciate a GND PROX on the PFD and generate an aural “TERRAIN,TERRAIN”. The
aural is annunciated once and the visual alert will remain until the condition is rectified.
Penetration of the warning area will annunciate a PULL UP alert on the PFD and generate
an aural “PULL UP” warning. The aural and visual warning are annunciated continuously
until the condition is rectified.
NAVIGATION
Flight Crew Operating Manual Rev 2A, Apr 11, 2005
CSP 700−5000−6
Volume 2
17−10−38
EGPWS MODES (CONT'D)
Mode 2 − Excessive Terrain Closure Rate (Cont’d)
· Mode 2B − Activated when flaps are in the landing configuration, or in the event the flaps are
up and the airplane is on an ILS approach and the glideslope and localizer deviations are
less than ±2 dots and for 60 seconds after takeoff.
Penetration of the alert area will
annunciate a GND PROX on the PFD and enable an aural “TERRAIN,TERRAIN”. The aural
and the visual alerts are annunciated continuously and will remain until the condition is
rectified. Penetration of the warning area will annunciate a PULL UP alert on the PFD and
generate an aural “PULL UP” warning. The aural and visual warning are annunciated
continuously until the condition is rectified. The Mode 2B warning envelope is inhibited at an
altitude below 30 feet AGL.
PULL UP
TERRAIN
TERRAIN
PULL UP
GF1710_064 20
GND
PROX
10
PULL
UP
20
10
20
10
20
10
"TERRAIN
TERRAIN" "PULL UP"
2500
2000
1500
1000
500
0
0 2000
RADIO ALTITUDE (FEET)
TERRAIN CLOSURE RATE(FEET/MIN)
GF1710_065
4000 6000 8000 10000
" PULL UP "
" TERRAIN " " TERRAIN "
NAVIGATION
Rev 2A, Apr 11, 2005 Flight Crew Operating Manual
CSP 700−5000−6
Volume 2
17−10−39
EGPWS MODES (CONT'D)
Mode 3 − Altitude Loss After Takeoff
Mode 3 provides warnings when the EGPWC detects that a significant amount of altitude is lost
immediately after takeoff
or during a goaround.
Mode 3 uses radio altitude, barometric altitude
　
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