787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Flight Management, Navigation -
FMC Preflight
Copyright © The Boeing Company. See title page for details.
11.40.12 D615Z003-TBC
• LOC – position calculated from localizer and IRU position data
• LOC-RADIO – position calculated from localizer and navigation radio
position data
• RADIO – position calculated from navigation radio position data
Displays latitude/longitude (or bearing/distance) position of the IRU sensor
currently being used by the Master FMC.
Blank if no valid IRU position exists.
Displays latitude/longitude (or bearing/distance) position of the GPS sensor
currently being used by the Master FMC.
Blank if no valid GPS position exists.
After airborne, displays latitude/longitude (or bearing/distance) position of the
navigation radios being used by the Master FMC.
Blank if no valid RADIO position exists.
Displays RNP values stored in the navigation database for departure and arrival
procedures; or, if there are none, displays the default values stored within the FMC
by flight phase. Also displays FMC actual navigation performance (ACTUAL).
Default RNP is in small font.
Valid RNP entries are in the range 0.01 to 99.9. ACTUAL entry not allowed.
When ACTUAL exceeds RNP, the EICAS message NAV UNABLE RNP
displays.
Note: The FMC stops GPS updating if GPS data accuracy degrades due to
satellite availability or unfavorable geometry, or if the flight crew inputs a
small RNP value. Subsequently, the FMC receives updates from another
system.
Push – displays the INIT/REF INDEX page.
Push –
• arms FMC position update function
• changes prompt to ARMED
• adds NOW prompts to right side of INERTIAL, GPS, and RADIO lines
Push a NOW prompt key to update FMC position to the selected source.
2
INERTIAL
3
GPS
4
RADIO
5
Required Navigation Performance and Actual Navigation
6
INDEX
7
UPDATE ARM
August 14, 2009
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