Boeing 787-8 - Page 1511

787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Warning Systems -
Controls and Indicators
Copyright © The Boeing Company. See title page for details.
D615Z003-TBC 15.10.21
[Option – Lookahead peaks]
When the airplane is higher than 2,000 feet above terrain, density based on
obstacle height, peaks height, and airplane altitude:
• solid green – highest obstacles or peaks displayed
• high density dotted green – intermediate height obstacles or terrain peaks
displayed
• low density dotted green – lowest obstacles or terrain peaks displayed
When the airplane is lower than 2,000 feet above terrain, color and density based
on obstacle height, terrain height, and airplane altitude:
• low density dotted green – terrain from 2,000 feet below to 1000 feet
below airplane altitude
• high density dotted green – terrain from 1,000 feet below to 500 feet (250
feet with gear down) below airplane altitude
• low density dotted amber – terrain 500 feet (250 feet with gear down)
below to 1,000 feet above airplane altitude
• high density dotted amber – terrain 1000 feet to 2,000 feet above airplane
altitude
• dotted red – terrain more than 2,000 feet above airplane altitude
• dotted magenta – no terrain data available
• solid amber – look-ahead terrain caution alert is occurring
• solid red – look-ahead terrain warning alert is occurring
Note: In areas without terrain data, look-ahead terrain alerting and display
functions not available. GPWS immediate alerts function normally.
Displayed automatically when:
• a look-ahead terrain alert occurs, and
• TERR not selected on either ND, and
• respective ND is in MAP or MAP CTR mode
Display updates with a display sweep similar to weather radar display. (Refer to
GPWS - Look-Ahead Terrain Alerting
in Chapter L, Section 10, for additional
information.)
TERR (cyan) – Terrain display enabled.
[Option – Lookahead peaks]
Indicates the absolute height of the highest terrain or obstacle displayed on the ND
and mini-map in hundreds of feet above sea level (MSL). The color (amber, green,
or red) matches the color of corresponding obstacle or terrain being displayed.
2
Terrain Mode Annunciation
3
Highest Elevation of Obstacle or Terrain Displayed
August 14, 2009