787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Warning Systems -
System Description
Copyright © The Boeing Company. See title page for details.
D615Z003-TBC 15.20.19
TCAS Voice Annunciations
Voice Annunciation Condition Response
ADJUST VERTICAL
SPEED, ADJUST
Existing RA, minimum vertical
speed required to ensure
separation has decreased,
present pitch attitude and
vertical speed are outside the
red RA regions,
or,
new RA, initial voice
annunciation.
Present pitch attitude and
vertical speed are within the red
RA regions.
Continue to keep pitch
attitude and vertical speed
outside the red RA
regions.
Vertical speed may be
decreased,
or,
change pitch attitude and
vertical speed to remain
outside the red RA
regions.
CLEAR OF CONFLICT TCAS PFD vertical guidance is
no longer displayed and traffic
changes to a TA symbol.
Separation is increasing and the
RA will not occur.
However, the voice
annunciation does not sound if
TCAS can no longer predict the
track of the RA airplane.
Attempt to visually locate
the traffic.
CLIMB, CLIMB New RA, initial voice
annunciation.
Present pitch attitude and
vertical speed are within the red
RA regions.
Increase pitch attitude and
vertical speed to remain
outside the red RA
regions.
CLIMB, CLIMB NOW,
CLIMB, CLIMB NOW
Existing RA, previous TCAS
vertical guidance was to
descend.
Present pitch attitude and
vertical speed are within the red
RA regions.
August 14, 2009
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