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of washer fluid while held ON.
The washer fluid reservoir is located behind the door in the book storage area on
the Captain’s side panel. It is equipped with a sight gage and a refill reference
mark.
Probe Heat
Four pitot-static probes and two angle of attack probes are electrically heated for
anti-ice protection when any engine is operating. Two total air temperature probes
are electrically heated for anti-ice protection in flight.
April 01, 2001
747 Operations Manual
Anti-Ice, Rain Chapter 3
EICAS Messages Section 30
Copyright © The Boeing Company. See title page for details.
D6-30151-425 3.30.1
Anti–Ice, Rain EICAS Messages
The following EICAS messages can be displayed.
Message Level Aural Condition
>ANTI-ICE NAC Advisory Any nacelle anti-ice system on,TAT
greater than 12°C, and ice detector
does not detect ice.
>ANTI-ICE WING Advisory Either wing anti-ice system on, TAT
greater than 12°C, and ice detector
does not detect ice.
Message Level Aural Condition
HEAT L, RAOA Advisory Heater failure on respective AOA
probe.
HEAT L, RTAT Advisory Heater failure on respective TAT
probe, or ground/air logic has failed to
remove power and a TAT probe is
heated on the ground.
HEAT P/S CAPT, FO,
L AUX, R AUX
Advisory Heater failure on respective P/S probe.
HEAT WINDOW L, R Advisory Window heat of respective windshield
not powered.
Message Level Aural Condition
>ICE DETECTORS Advisory Ice detection system has failed.
Message Level Aural Condition
>ICING NAC Caution Beeper Ice detector detects ice and any nacelle
anti-ice system is off in flight.
>ICING WING Advisory Ice detector detects ice and wing
anti-ice system is off in flight.
Message Level Aural Condition
NAI VALVE 1, 2, 3, 4 Advisory Respective nacelle anti-ice valve not in
commanded position.
December 01, 1999
747 Operations Manual
Copyright © The Boeing Company. See title page for details.
3.30.2 D6-30151-425
Anti-Ice, Rain -
EICAS Messages
Message Level Aural Condition
WAI VALVE L, R Advisory Respective wing anti-ice valve not in
commanded position.
December 01, 1999
747 Operations Manual
Automatic Flight Chapter 4
Table of Contents Section 0
Copyright © The Boeing Company. See title page for details.
D6-30151-425 4.TOC.0.1
Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.10.1
Mode Control Panel (MCP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.10.1
Autopilot Flight Director System(AFDS) Controls . . . . . . . . 4.10.1
Autothrottle (A/T) System Controls . . . . . . . . . . . . . . . . . . . . 4.10.2
Autopilot Flight Director IAS/Mach Controls. . . . . . . . . . . . . 4.10.4
Autopilot Flight Director Roll and Pitch Controls . . . . . . . . . 4.10.5
Autopilot Flight Director Heading and Bank Angle
Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.10.8
Autopilot Flight Director Vertical Speed (V/S)
Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.10.9
Autopilot Flight Director Altitude Controls . . . . . . . . . . . . . 4.10.10
Autopilot Flight Director ApproachMode Controls . . . . . . . 4.10.11
PFD Flight Mode Annunciations (FMAs) . . . . . . . . . . . . . . . . . 4.10.14
Autopilot Disengage Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.10.16
Autothrottle Disconnect and TO/GA Switches. . . . . . . . . . . . . . 4.10.17
SystemDescription . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.20.1
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.20.1
Autopilot Flight Director System . . . . . . . . . . . . . . . . . . . . . . . . . 4.20.1
MCP Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.20.1
Autopilot Engagement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.20.2
Autopilot Disengagement . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.20.2
AFDS Failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.20.2
Flight Director Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.20.2
Autopilot Flight Director SystemSchematic. . . . . . . . . . . . . . 4.20.3
AFDS Status Annunciation . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.20.3
AFDS Flight Mode Annunciations . . . . . . . . . . . . . . . . . . . . . 4.20.4
Autothrottle System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.20.7
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