787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Anti-Ice, Rain -
System Description
Copyright © The Boeing Company. See title page for details.
D615Z003-TBC 3.20.3
Pack inlet anti-ice functions automatically with signals from the automatic ice
detection system. Operation is inhibited on the ground and when TAT is above
10º C.
Flight Deck Window Heat
All flight deck windows are electrically heated. The forward windows have
exterior surface anti–icing, and interior surface antifogging protection. The side
windows have interior surface antifogging protection only. With the PRIMARY L
SIDE, L FWD, R FWD, and R SIDE window heat switches in the ON position,
the primary system operates automatically.
With the BACKUP L FWD and R FWD switches in the ON position, a backup
antifogging system for the forward windows operates automatically if the primary
window heat system fails.
Windshield Wipers/Washers
The forward windows are equipped with independently controlled, three–speed
wipers. When the WIPER selector in OFF, the respective wiper is off and stowed.
The Captains and First Officers windshields are equipped with a windshield
washer system. Windshield washer switches command a continuous application
of washer fluid while held ON.
Windshield scratching may occur if wipers are used on a dry windshield surface.
(Refer to Windshield Wiper Use
in Chapter SP, Section 3, for additional
information.)
Probe Heat
Three pitot probes and two angle of attack probes are electrically heated for
anti-ice protection when either engine is operating.
The total air temperature probe is electrically heated for anti-ice protection in
flight.
August 14, 2009
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