Boeing 767 300 antihielos

B767 

 Anti‐Ice & Rain DO NOT USE FOR FLIGHT

Boeing B767 - Systems Summary [Anti-Ice & Rain]

Introduction to Anti-ice & Rain The anti–ice and rain systems include: • engine anti–ice • wing anti–ice • flight deck window heat • windshield wipers • probe heat

Engine Anti–Ice System The engine anti–ice system uses engine bleed air to provide engine cowl inlet ice protection. Engine anti–ice can be operated in flight or on the ground. The left and right engines have identical, independent anti–ice systems. This allows the remaining system to operate if one engine fails. The engine thermal anti–ice (TAI) annunciation appears above the EICAS N1 indication when an engine anti–ice valve is open. The engine thermal anti–ice (TAI) annunciation appears above the EICAS EGT indication when an engine anti–ice valve is open. The VALVE light illuminates and the EICAS advisory message L or R ENG ANTI–ICE displays when the engine anti–ice valve disagrees with the switch position.

Wing Anti–Ice System The wing anti–ice system provides bleed air to the three outboard leading edge slats on each wing. Wing anti–ice can be operated in flight only. It is inhibited on the ground. The VALVE light illuminates and the EICAS advisory message L or R WING ANTI–ICE displays if the wing anti–ice valve disagrees with the switch position.

Manual Anti-Ice System Operation Engine Anti-Ice Operation On the ground or in flight, pushing the ENGINE ANTI–ICE switches ON commands the engine anti-ice valves to open, and allows engine bleed air to anti–ice the engine cowl inlets. Pushing the ENGINE ANTI–ICE switches again commands the engine anti-ice valves to close, and stops engine bleed air from anti–icing the engine cowl inlets.

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Boeing B767 - Systems Summary [Anti-Ice & Rain]

Wing Anti-Ice Operation In flight, pushing the WING ANTI–ICE switch ON commands the wing anti–ice valve in each wing to open, allowing bleed air to flow from the bleed air manifold to the affected slats. Pushing the WING ANTI–ICE switch again commands the wing anti–ice valve in each wing to close, stopping bleed air from flowing from the bleed air manifold to the affected slats.

Anti–Ice System Schematic ANTI-ICE

WING

ENGINE L R

ON

R

L VALVE

VALVE

L PACK

L

TRIM AIR

ON

ON

VALVE

VALVE

R

ISLN

R PACK

ISLN

ISLN

WAI

WAI

APU EAI

EAI

L ENG START

APU

WING ANTI-ICE VALVE

START R ENG ENGINE ANTI-ICE VALVE

Flight Deck Window Heat All flight deck windows are electrically heated. The forward windows have anti–icing protection and anti–fogging. The side windows have anti–fogging protection only.

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Boeing B767 - Systems Summary [Anti-Ice & Rain]

The WINDOW HEAT switches control heating for all flight deck windows. With the switches ON, window heat operates as soon as electrical power is established. The windows are protected from thermal shock when the switches are initially placed ON. In addition to the electric heating, conditioned air is ducted to the top of the forward windows and then flows along the inside surface to provide supplemental anti–fogging. The anti–fogging airflow is continuous and is independent of electric window heat. One INOP light illuminates and the EICAS advisory message L or R FWD WINDOW or L or R SIDE WINDOW displays to indicate a window is not being heated. If two or more INOP lights illuminate, the EICAS advisory message WINDOW HEAT displays. The WINDOW HEAT EICAS message displays, and electrical power for the aft-most cockpit window heat is load shed when the Fuel Jettison Switch is selected ON. Electrical power is reset, and the WINDOW HEAT EICAS message no longer displays when the Fuel Jettison Switch is selected OFF.

Windshield Wipers The forward windows are equipped with two–speed wipers. One selector controls both wipers. With the WIPER selector in the OFF position, the wipers are off and stowed.

Probe Heat Operation of the probe heat system is fully automatic. Power to the electrically heated probes is applied any time an engine is running. An individual probe heat light illuminates and the associated EICAS advisory message displays when a probe is not being heated. If two or more probe lights illuminate, the EICAS advisory message PROBE HEAT displays.

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Boeing B767 - Systems Summary [Anti-Ice & Rain]

Anti–Ice EICAS Messages The following EICAS messages can be displayed. Message L AOA PROBE

Level Advisory

R AOA PROBE L AUX PITOT

Advisory

R AUX PITOT

Light L AOA

Aural

Condition

R AOA

AOA probe heat is inoperative.

L AUX PITOT

Left aux or right aux pitot heat is inoperative.

R AUX PITOT CAPT PITOT

Advisory

CAPT PITOT

Captain’s pitot probe heat is inoperative.

L ENG ANTI–ICE

Advisory

VALVE

Engine anti–ice valve disagrees with switch position.

F/O PITOT

Advisory

FO PITOT

First officer’s pitot probe heat is inoperative.

PROBE HEAT

Advisory

Two or more PITOT, AOA or TAT

Two or more probe heats are inoperative.

TAT PROBE

Advisory

TAT

TAT probe heat is inoperative.

L FWD WINDOW

Advisory

INOP

Window is not being heated.

Advisory

INOP

Window is not being heated.

WINDOW HEAT

Advisory

Two or more INOP

Two or more windows are not being heated.

L WING ANTI–ICE

Advisory

VALVE

Wing anti–ice valve disagrees with switch position.

R ENG ANTI–ICE

R FWD WINDOW L SIDE WINDOW R SIDE WINDOW

R WING ANTI–ICE

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Boeing B767 - Systems Summary [Anti-Ice & Rain]

Manual Anti–Ice Panel WING

1

R

L

2

ANTI-ICE

ON

VALVE

VALVE

ENGINE L R ON

ON

VALVE

VALVE

3 4

OVERHEAD PANEL 1

WING ANTI–ICE Switch

ON – in flight, both wing anti–ice valves are commanded open. Off (ON not visible) – both wing anti–ice valves are commanded closed. 2

Wing Anti–Ice VALVE Lights

Illuminated (amber) – wing anti–ice valve position disagrees with the switch position. 3

ENGINE ANTI–ICE Switches

ON – the engine anti–ice valve is commanded open. Off (ON not visible) – the engine anti–ice valve is commanded closed. 4

Engine Anti–Ice VALVE Lights

Illuminated (amber) – engine anti–ice valve position disagrees with the switch position.

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Boeing B767 - Systems Summary [Anti-Ice & Rain]

Window Heat and Wiper Panels Window Heat Panel WINDOW HEAT L

1

R

SIDE

FWD

FWD

ON

ON

ON

ON

INOP

INOP

INOP

INOP

SIDE

2

OVERHEAD PANEL 1

WINDOW HEAT Switches

ON – window heat is applied to the selected windows. Off (ON not visible) – window heat is removed from the selected windows 2

Window Heat Inoperative (INOP) Lights

Illuminated (amber) – the window is not being heated.

Wiper Panel

WIPER OFF LOW HIGH

OVERHEAD PANEL 1

WIPER Selector

OFF – the wipers are stowed at the base of the windows. LOW – the wipers operate at low speed. HIGH – the wipers operate at high speed.

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1

Boeing B767 - Systems Summary [Anti-Ice & Rain]

Probe Heat Lights

1

CAPT PITOT

L AUX PITOT

5

2

F O PITOT

R AUX PITOT

6

3

L AOA

TAT

7

4

R AOA

OVERHEAD PANEL 1

Captain Pitot (CAPT PITOT) Light

Illuminated (amber) – probe is not being heated in flight or neither engine is running on the ground. 2

First Officer Pitot (F O PITOT) Light

Illuminated (amber) – probe is not being heated in flight or neither engine is running on the ground. 3

Left Angle of Attack (L AOA) Probe Light

Illuminated (amber) – probe is not being heated in flight or neither engine is running on the ground. 4

Right Angle of Attack (R AOA) Probe Light

Illuminated (amber) – probe is not being heated in flight or neither engine is running on the ground. 5

Left Auxiliary Pitot (L AUX PITOT) Light

Illuminated (amber) – probe is not being heated in flight or neither engine is running on the ground. 6

Right Auxiliary Pitot (R AUX PITOT) Light

Illuminated (amber) – probe is not being heated in flight or neither engine is running on the ground. 7

Total Air Temperature (TAT) Probe Light

Illuminated (amber) – probe is not being heated in flight or neither engine is running on the ground. Page 7