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30-11-00
Page 5
D633A101-GUN Oct 10/2005
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
Flight Compartment
The engine and wing anti-ice control panel is on the P5 forward
overhead panel.
Forward Equipment Compartment
There are two control stand anti-ice switches. They are on the
autothrottle switchpacks. The switchpacks are in the forward
equipment compartment.
Engine
There are two WTAI solenoid valves. They are on the top of the
engine compressor case.
Wing Leading Edges
There are two WTAI shutoff valves. They are in the wing leading
edges, outboard of each engine strut.
There are two WTAI ground overheat thermal switches, They
are on the WTAI duct in the wing leading edges downstream of
the WTAI valves.
The WTAI supply ducts are on the forward wing spars.
There are six WTAI telescoping ducts. They are in the wing
leading edges. There are six WTAI spray tubes. They are in the
three inboard slats of each wing.
ICE AND RAIN PROTECTION - WTAI - COMPONENT LOCATION
EFFECTIVITY
GUN ALL 30-11-00
Page 6
D633A101-GUN Oct 10/2005
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
30-11-00-002
ICE AND RAIN PROTECTION - WTAI - COMPONENT LOCATION
ICE AND RAIN PROTECTION - WTAI - COMPONENT LOCATION
EFFECTIVITY
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Page 7
D633A101-GUN Oct 10/2006
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
30-11-00-002
Purpose
The anti-ice panel does these things:
* Gives the flight crew interface with the wing and engine inlet
cowl anti-icing systems
* Has the circuitry for control and indication of the wing antiicing
system
* Has the circuitry for control and indication of the engine inlet
cowl anti-icing systems.
Location
The panel is on the P5 forward overhead panel.
General Description
The wing anti-ice valve is open when the wing ant-ice switch is
in the ON position. The blue VALVE OPEN light monitors the
valve and switch positions. These are the light indications:
* Light is off - the switch is in the OFF position and the valve is
closed
* Light is dim - the switch is in the ON position and the valve is
open
* Light is bright - the switch position and valve position
disagree or the valve is in transit.
ICE AND RAIN PROTECTION - WTAI - ANTI-ICE PANEL
EFFECTIVITY
GUN ALL 30-11-00
Page 8
D633A101-GUN Oct 10/2005
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
30-11-00-003
ICE AND RAIN PROTECTION - WTAI - ANTI-ICE PANEL
ICE AND RAIN PROTECTION - WTAI - ANTI-ICE PANEL
EFFECTIVITY
GUN ALL 30-11-00
Page 9
D633A101-GUN Oct 10/2005
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
30-11-00-003
Purpose
The wing thermal anti-ice shutoff valves control air flow from the
pneumatic manifold to the anti-ice supply ducts.
Location
There is one valve in each wing leading edge, outboard of the
engine strut.
Physical Description
The valve is a motor-operated butterfly-type valve. It has a
manual override and position indication lever. The valves use
115v ac power.
Two V-flange clamps mount the valve to the duct.
ICE AND RAIN PROTECTION - WTAI - WING THERMAL ANTI-ICING SHUTOFF VALVE
EFFECTIVITY
GUN ALL 30-11-00
Page 10
D633A101-GUN Oct 10/2005
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
30-11-00-005
ICE AND RAIN PROTECTION - WTAI - WING THERMAL ANTI-ICING SHUTOFF VALVE
ICE AND RAIN PROTECTION - WTAI - WING THERMAL ANTI-ICING SHUTOFF VALVE
EFFECTIVITY
GUN ALL 30-11-00
Page 11
D633A101-GUN Oct 10/2005
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
30-11-00-005
Purpose
The wing anti-icing ground overheat thermal switch protects the
wing leading edges from overheat damage.
This protection operates only when the wing thermal anti-ice
(WTAI) system is on and the airplane is on the ground.
Location
There are two wing anti-icing ground overheat thermal
switches. They are in the WTAI supply ducts, downstream of
the WTAI shutoff valves.
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