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Ice Detection System --- Schematic
Figure 15---20---1
Anti--Ice Control Panel
Overhead Panel
ICE SIGNAL
TEST
AC
ESS
BUS
AC
BUS 2
TEST
ICE SIGNAL
ICE DET
2 OK
ICE
ICE DET
1 OK
DCU’S
EICAS
CB1--T11
ICE
DET 1
CB2--A14
ICE
DET 2
Vol. 1 15--20--3
ICE AND RAIN PROTECTION SYSTEM
Ice Detection System REV 3, May 03/05
Flight Crew Operating Manual
CSP C--013--067
Ice Detection System
Figure 15---20---2
ICE DET 1 or 2 FAIL (white)
Indicates that respective ice detector has failed.
ICE DET FAIL (amber)
Indicates that both ice detectors have failed.
ICE, ICE 1 or ICE 2 (amber)
Indicates that an icing condition has been
detected by the respective detector(s) and
wing or cowl anti--ice system is selected off
or has failed.
ICE, ICE 1 or ICE 2 (green)
Indicates that an icing condition has been
detected by the respective detector(s) with
wing and cowl anti--ice selected on and
operating normally.
Anti--Ice Page
Anti--Ice Panel
Overhead Panel
BRT
Vol. 1 15--20--4
ICE AND RAIN PROTECTION SYSTEM
Ice Detection System REV 3, May 03/05
Flight Crew Operating Manual
CSP C--013--067
Anti---Ice System EICAS Indications <1001>
Figure 15---20---3
ICE DET 1 or 2 FAIL status (white)
Indicates that respective ice detector
system has failed and other system is
operating normally.
ICE advisory (green)
Indicates that an icing condition is
detected with wing and cowl anti--ice
selected on and operating normally.
ICE caution (amber)
Indicates that an icing condition is
detected and wing or cowl anti--ice
system is selected off or has failed.
ICE DET FAIL caution (amber)
Indicates both ice detector systems
have failed.
Status Page
Primary Page
Vol. 1 15--20--5
ICE AND RAIN PROTECTION SYSTEM
Ice Detection System REV 3, May 03/05
Flight Crew Operating Manual
CSP C--013--067
A. System Circuit Breakers
SYSTEM SUB--SYSTEM CB NAME BUS BAR CB
PANEL
CB
LOCATION
NOTES
Ice Detection
System Ice Detectors
ICE DET 1 AC
ESSENTIAL 1 T11
ICE DET 2 AC BUS 2 2 A14
Vol. 1 15--20--6
ICE AND RAIN PROTECTION SYSTEM
Ice Detection System REV 3, May 03/05
Flight Crew Operating Manual
CSP C--013--067
THIS PAGE INTENTIONALLY LEFT BLANK
Vol. 1 15--30--1
ICE AND RAIN PROTECTION SYSTEM
Wing Anti--Ice System Sep 09/02
Flight Crew Operating Manual
CSP C--013--067
1. WING ANTI--ICE SYSTEM
The wing anti-ice system prevents ice formation on the wing leading edge by heating the
surface using hot engine bleed air. The hot bleed air is supplied through insulated ducting
and released through piccolo tubes to the inner surface of the wing and slat leading edges.
The wing anti-ice system is divided into identical left and right systems. In normal operation,
each engine supplies bleed air to its respective wing anti-ice system. The systems are
connected by a, normally closed, wing anti--ice cross bleed valve. In the event one system
fails, the cross bleed valve is opened to permits cross bleed between systems. This ensures
that wing anti--icing is maintained to both systems.
The system is manually activated and is automatically controlled by a dual channel digital
anti-ice and leak detection controller (AILC). The AILC controls the wing anti-ice system
using electrical inputs received from skin temperature sensors located at each wing leading
edge. The AILC modulates the respective wing anti-ice valve open or closed as necessary
to prevent ice formation. Each of the two channels of the AILC has the capability to control
both left and right anti-ice valves.
Vol. 1 15--30--2
ICE AND RAIN PROTECTION SYSTEM
Wing Anti--Ice System Sep 09/02
Flight Crew Operating Manual
CSP C--013--067
Wing Anti---Ice System Schematic
Figure 15---30---1
TO EICAS
OUTBD TEMP
SENSOR
ATS ATS
BLEED ISOLATION
VALVE
L/AIR
COND
WING
ANTI--ICE
VALVE
COWL
ANTI--ICE
VALVE
ANTI--ICE
CROSS
BLEED
VALVE
ANTI--ICE
PANEL
BLEED AIR
PANEL
HIGH
PRESSURE
PORTS
COWL ANTI--ICE
HIGH
PRESSURE
VALVE
PRSOV
R/AIR
COND
COWL ANTI--ICE LOW
PRESSURE
PORTS
HIGH
PRESSURE
VALVE
APU
LOAD CONTROL
VALVE (LCV)
PRSOV
　
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