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 15.10.23
Terrain Navigation Display Annunciations
TERR FAIL (amber) – Look-ahead terrain alerting and display failed.
TERR OVRD (amber) – TERR OVRD selected from the GPWS page of the TCP.
TERR POS (amber) – Look-ahead terrain alerting and display unavailable due to
GPS position uncertainty. During time between GPS position failure and display
of TERR POS message, IRS provides position for look-ahead terrain alerting and
display.
TERR TEST (cyan) – GPWS operating in self–test mode.
1
Terrain Status Annunciation
2
Terrain Mode Annunciation
TERR
TEST
TERR RANGE DISAGREE
MAP/TERR RANGE DISAGREE
TERR
OVRD
TERR
POS
TERR
FAIL
NAVIGATION DISPLAY
1
2
3
MINI-MAP
TERR RANGE DISAGREE
MAP/TERR RANGE DISAGREE
TERR
OVRD
TERR
POS
TERR
FAIL
TERR
TEST
August 14, 2009