787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Warning Systems -
System Description
Copyright © The Boeing Company. See title page for details.
15.20.18 D615Z003-TBC
TCAS HUD and PFD Vertical Guidance
When TCAS predicts an RA, TCAS vertical guidance is displayed on both the
HUD and PFD for a maneuver to ensure vertical separation. Traffic avoidance is
ensured by adjusting or maintaining a pitch attitude and vertical speed outside the
displayed RA regions.
If the traffic airplane also has TCAS and a mode S transponder, TCAS vertical
guidance is coordinated with the traffic airplanes TCAS.
TCAS ND Messages
ND Message Color Description
OFFSCALE Amber TA is occurring at range greater than current ND range.
Replaced by red OFFSCALE when RA is also
occurring at range greater than current ND range.
OFFSCALE Red RA is occurring at range greater than current ND range.
TA ONLY Cyan TCAS can not provide RAs. All traffic that would have
been RAs are predicted as TAs.
TCAS FAIL Amber TCAS failed, or
TCAS information cannot be displayed on ND.
TCAS OFF Amber TFC switch pushed to display traffic but TCAS not
selected on transponder panel.
TCAS TEST Cyan TCAS in test mode. Message is displayed on all ND
modes and ranges.
TFC Cyan TCAS traffic display enabled.
Inhibited if following TCAS messages are displayed:
TCAS FAIL,
TCAS OFF,
TCAS TEST
TRAFFIC Amber TA is occurring.
TRAFFIC Red RA is occurring.
February 15, 2010
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