Anti-ice

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747 Flight Crew Operations Manual

Anti-Ice, Rain
Table of Contents
3.0 Anti-Ice, Rain-Table of Contents

Chapter 3
Section 0

Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.10.1 Nacelle and Wing Anti-Ice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.10.1 Nacelle and Wing Anti-Ice Panel . . . . . . . . . . . . . . . . . . . . . .3.10.1 Windshield Heat and Washers . . . . . . . . . . . . . . . . . . . . . . . . . . . Windshield Heat and Washers Panel . . . . . . . . . . . . . . . . . . . Windshield Air Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Windshield Washer Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.10.3 3.10.3 3.10.4 3.10.5

System Description . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . 3.20.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.20.1 Anti-Ice Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Automatic Ice Detection System . . . . . . . . . . . . . . . . . . . . . . Nacelle Anti–Ice System . . . . . . . . . . . . . . . . . . . . . . . . . . . .Wing Anti–Ice System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.20.1 3.20.1 3.20.1 3.20.3

Anti-Ice Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.20.4 Nacelle Anti–Ice System . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.20.4 Wing Anti–Ice System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.20.5 Flight DeckWindow Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.20.6 Windshield Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.20.6 Windshield Wipers and Washers . . . . . . . . . . . . . . . . . . . . . . . . . 3.20.6 Probe Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.20.7 EICAS Messages . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . 3.30.1 Anti–Ice, Rain EICAS Messages . . . . . . . . . . . . . . . . . . . . . . . . . 3.30.1

Copyright © The Boeing Company. See title page for details.

May 1, 2002

D6-30151-400

3.TOC.0.1

Anti-Ice, Rain Table of Contents

747 Flight Crew Operations Manual

Intentionally Blank

Copyright © The Boeing Company. See title pagefor details.

3.TOC.0.2

D6-30151-400

May 1, 2002

747 Flight Crew Operations Manual

Anti-Ice, Rain
Controls and Indicators
3.10 Anti-Ice, Rain-Controls and Indicators

Chapter 3
Section 10

Nacelle and Wing Anti-Ice
203

Nacelle and Wing Anti-Ice Panel

NACELLE 1

2

OFF AUTO ON

3

ANTI-ICE 4

1

2

WING ANTI-ICE AUTO OFF ON

OVERHEAD PANEL

1

NACELLEANTI–ICE Switches

OFF – nacelle anti–ice valves commanded closed AUTO – • in flight, nacelle anti-ice operates in response to inputs from the ice detection system. Requirements for valve operation are the same as ON position • on the ground, system off. When nacelle anti-ice valve is open at touchdown, valve remains open until engine shutdown ON – • valve opens when bleed air pressureavailable • engine igniters selected by Auto Ignition selector and EEC operate continuously • PRV opens when nacelle anti-ice on, unless PRV closed by: • prior or present bleed air overheat, or • start valve not closed, or • HP bleed valve failed open
2

WING ANTI–ICE Switch

OFF – wing anti–ice valves commanded closed
Copyright © The Boeing Company. See title page for details.

April 1, 2005D6-30151-400

3.10.1

Anti-Ice, Rain Controls and Indicators

747 Flight Crew Operations Manual

AUTO – • in flight with leading edge flaps retracted, wing anti-ice valves open in response to inputs from the ice detection system • on the ground, system off. ON – • in flight, wing anti-ice valves open to supply bleed air to the left and right wing leading edges • on the ground, system off...
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