787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Electrical -
Controls and Indicators
Copyright © The Boeing Company. See title page for details.
D615Z003-TBC 6.10.9
Forward External Power Synoptic Indications
Aft External Power Synoptic Indications
Symbol Condition Description
Forward external
power on (green)
Forward external power:
• switch has been selected
• is powering the buses
• ON light illuminates in power switch
Forward external
power available
(green)
Forward external power:
• is plugged in, power quality is
acceptable
• switch has not been selected
• AVAIL light illuminates in power switch
Forward external
power off (white)
Forward external power is not available.
Forward external
power data invalid
(white, low intensity)
Forward external power condition unknown.
Symbol Condition Description
Aft external power
on (green)
Aft external power:
• switch has been selected
• is powering the motor controllers (for
right engine start)
• ON light illuminates in power switch
Aft external power
available (green)
Aft external power:
• is plugged in, power quality is
acceptable
• switch has not been selected
• AVAIL light illuminates in power switch
Aft external power
off (white)
Aft external power is not available.
Aft external power
data invalid (white,
low intensity)
Aft external power condition unknown.
August 14, 2009
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