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ANNUNCIATION DESCRIPTION
TERRAIN FAIL
The TAAD is inoperative due to an
EGPWC internal fault or due to the
failure of a required input.
TERRAIN NOT AVAIL
The TAAD and the TCF have been
temporarily inhibited by the EGPWC
because the estimated navigation
accuracy from both the GPS and the
FMS is insufficient.
TERRAIN CONTROL FAULT
The range of the terrain elevation
data does not agree with the current
MFD range.
EGPWS Abnormal Annunciation
Table 17-8
LX/TERRAIN G+1 USTB T+10.7
TAS 0 0
YUL
(8700)
KDEN
(8215)
0NM
2NM
177NM
1NM
0:01
0:31
0:00
:
:
:
:
CLIMB
(8215)
ABOVE
BELOW DME2
– – – –
T-4.5
UTC00:20 GS SAT-1C TAT-1C
VOR1 ADF2
5
10
328
(8700)
P604_17_086
0:00/ 611NM
8215A
(8215)
KASE
/8700A
/8215A
TERRAIN FAIL TERRAIN FAIL
(INTC)
NAVIGATION SYSTEMS
17-52 For Training Purposes Only
May 03
P I LOT T R A I N I N G GU I D E
EICAS Messages
The following white EICAS status messages are provided to inform the crew when
EGPWS functions are inoperative:
MESSAGE MEANING
GPWS FAIL The basic Ground Proximity Warning function (Mode 1 to 6) is inoperative.
WINDSHEAR FAIL The windshear detection function is inoperative.
TERRAIN NOT AVAIL
The terrain awareness alerting and display functions and the Terrain Clearance
Floor function have been temporarily disabled by the EGPWS because the FMS
navigation accuracy is insufficient.
TERRAIN FAIL The terrain awareness alerting and display functions and the Terrain Clearance
Floor function are inoperative due to a fault condition.
EICAS Messages
Table 17-9
NAVIGATION SYSTEMS
For Training Purposes Only
May 03
17-53
P I LOT T R A I N I N G GU I D E
The following table lists a summary of the EGPWS modes and associated indications:
MODE CONDITION
AURAL
WARNING
LEVEL 1
VISUAL
WARNING
LEVEL 1
AURAL
WARNING
LEVEL 2
VISUAL
WARNING
LEVEL 2
1 Excessive Descent Rate “SINK RATE” GND PROX “PULL UP” “PULL UP”
2A Excessive Terrain Closure Rate
(Flaps not extended)
“TERRAIN
TERRAIN” GND PROX “PULL UP” “PULL UP”
2B Excessive Terrain Closure Rate
(Flaps fully extended)
“TERRAIN
TERRAIN” GND PROX “PULL UP” “PULL UP”‘
3 Altitude Loss after Takeoff or Go-
Around
“DON’T SINK
DON’T SINK” GND PROX None None
4A On Approach with Gear and Flaps
Up
“TOO LOW
TERRAIN” GND PROX “TOO LOW
GEAR” GND PROX
4B On Approach with Gear Down and
Flaps not in Landing Configuration
“TOO LOW
TERRAIN” GND PROX “TOO LOW
FLAPS” GND PROX
4C Takeoff or Go-Around Unsafe
Terrain Clearance
“TOO LOW
TERRAIN” GND PROX None None
5 Descent Below Glideslope
“GLIDESLOPE
GLIDESLOPE”
(Soft alert)
GND PROX
“GLIDESLOPE
GLIDESLOPE”
(Hard alert)
GND PROX
6 Approaching Minimums “APPROACHING
MINIMUMS” None None None
6 Minimums “MINIMUM” None None None
6 Altitude Callouts 1000, 500, 50, 40,
30, 20, 10 feet RA None None None
6 Excessive Bank Angle “BANK ANGLE” None None None
7
Windshear Alerting
Caution (increasing performance)
Warning (decreasing performance)
None
Amber
WINDSHEAR on
PFD
“WINDSHEAR,
WINDSHEAR,
WINDSHEAR”
Red
WINDSHEAR on
PFD
Terrain Look Ahead
“CAUTION
TERRAIN
CAUTION
TERRAIN”
GND PROX
“TERRAIN
TERRAIN
PULL UP”
“PULL UP”
Obstacle Detection
“CAUTION
OBSTACLE
CAUTION
OBSTACLE”
GND PROX
“OBSTACLE
OBSTACLE
PULL UP”
‘‘PULL UP”
Terrain Clearance Floor “TOO LOW
TERRAIN” GND PROX None None
GPWS Aural and Visual Alerts
Table 17-10
17-54 For Training Purposes Only
May 03
NAVIGATION SYSTEMS P I LOT T R A I N I N G GU I D E
Page Intentionally Left Blank
NAVIGATION SYSTEMS
For Training Purposes Only
May 03
17-55
P I LOT T R A I N I N G GU I D E
VHF Navigation System
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