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disagrees with the range received from the
DCP.
RDR NOT AT THIS RANGE
RDR NOT AT TCAS RANGE
Control is transferred and the range received
from the weather radar system disagrees with
the range received from DCP.
NAVIGATION SYSTEMS
Description
Vol. 2 17−10−21
REV 66, Feb 01/07
CL−604 Operating Manual
PSP 604−6
WEATHER RADAR SYSTEM (CONT'D)
Lightning/Weather Fault Annunciation
LX/WX FAULT ANNUNCIATION DESCRIPTION
WX FAULT Weather radar system detects an internal fault.
LX FAULT Lightning Detection System detects an internal
fault or the MFD detects invalid data.
LX/WX FAULT
Weather radar system detects an internal fault
and Lightning Detection System detects an
internal fault or the MFD detects invalid data.
Pilot and Copilot MFD − Weather Radar Fault Annunciation
Figure 17−10−17
ENHANCED GROUND PROXIMITY WARNING SYSTEM (EGPWS)
Description
The EGPWS alerts and warns the flight crew when the airplane’s flight path and position, relative
to terrain, requires immediate crew attention and action. EGPWS alerts the flight crew when
predetermined thresholds are exceeded using the following modes:
• Mode 1 − Excessive descent rate
• Mode 2 − Excessive terrain closure rate
• Mode 3 − Altitude loss after takeoff or go-around
• Mode 4 − Unsafe terrain clearance when not in a landing configuration
• Mode 5 − Below glideslope deviation alert
• Mode 6 − Callouts
• Mode 7 − Windshear detection and alerting
• Terrain/obstacle awareness alerting and display (TAAD)
• Terrain clearance floor (TCF)
NAVIGATION SYSTEMS
Description
Vol. 2 17−10−22
REV 66, Feb 01/07
CL−604 Operating Manual
PSP 604−6
ENHANCED GROUND PROXIMITY WARNING SYSTEM (EGPWS) (CONT'D)
Modes 1 through 6 are installed in all aircraft (basic GPWS). Mode 7, TAAD, and TCF are installed
in the aircraft equipped with “Enhanced” GPWS. Consult your Airplane Flight Manual supplement
for individual aircraft installation.
NAVIGATION SYSTEMS
Description
Vol. 2 17−10−23
REV 66, Feb 01/07
CL−604 Operating Manual
PSP 604−6
ENHANCED GROUND PROXIMITY WARNING SYSTEM (EGPWS) (CONT'D)
EGPWS Functional Schematic
Figure 17−10−18
NAVIGATION SYSTEMS
Description
Vol. 2 17−10−24
REV 66, Feb 01/07
CL−604 Operating Manual
PSP 604−6
ENHANCED GROUND PROXIMITY WARNING SYSTEM (EGPWS) (CONT'D)
Components and Operation
EGPWS Computer (EGPWC)
The EGPWS receives inputs from the air data system, radio altimeters, VHF Nav receivers,
GPS, IRS, angle-of-attack vanes, gear and flap selector levers and glareshield switch/lights.
These inputs are used to compute potential terrain conflicts.
Mode 1 – Excessive Descent Rate
Mode 1 provides aural and visual alerts and warnings, in the event that the EGPWC determines
that the rate of descent is excessive with respect to airplane altitude. The mode is active when
the airplane is less than 2,500 feet 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 illuminate the GND PROX switch/lights on the
glareshield, and generate an aural “SINKRATE SINKRATE”. The aural alert will be
annunciated once, and will be repeated only if conditions degrade 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 illuminate the PULL UP switch/lights on the
glareshield, and generate an aural “WHOOP, WHOOP, PULL UP” warning. The aural
warning is annunciated continuously until the condition is rectified.
EGPWS Mode 1
Figure 17−10−19
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, vertical speed and aircraft configuration inputs.
NAVIGATION SYSTEMS
Description
Vol. 2 17−10−25
REV 66, Feb 01/07
CL−604 Operating Manual
PSP 604−6
ENHANCED GROUND PROXIMITY WARNING SYSTEM (EGPWS) (CONT'D)
Mode 2 has two submodes: Mode 2A and Mode 2B.
　
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