787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Flight Management, Navigation Chapter 11
Flight Management Computer Section 32
Copyright © The Boeing Company. See title page for details.
D615Z003-TBC 11.32.1
11.32 Flight Management, Navigation-Flight Management Computer
Flight Management, Navigation32 Flight Management ComputerFlight Management Computer
FMC Databases
The FMC contains three databases:
• performance
• navigation
• airline modifiable information (AMI)
The performance database supplies performance data to the flight crew. It supplies
the FMC with data to calculate pitch and thrust commands. All pertinent data can
be displayed on the CDU. The database includes:
• airplane drag and engine characteristics
• maximum and optimum altitudes
• maximum and minimum speeds
The navigation database includes most data found on navigation charts. This data
can be displayed on the CDU or ND. The database contains:
• location of VHF navigation aids
• airports
•runways
• other airline selected data, such as SIDs, STARs, approaches, and company
routes
• transition altitudes
The FMC contains two sets of navigation data, each valid for 28 days. Each set
corresponds to the usual navigation chart revision cycle. The FMC uses the active
data for navigation calculations. The contents of the navigation database are
periodically updated and transferred to the FMC before the expiration date of the
active data.
The AMI file contains airline specified data. If the FMC senses a conflict in an
AMI value after a new AMI data load, the CDU help window message CHECK
AIRLINE POLICY is displayed.
Thrust Management
The thrust management function operates the autothrottle in response to flight
crew mode control panel inputs or to FMC commands. Reference thrust limits can
be selected on the THRUST LIM page. FMC autothrottle commands are made
while VNAV is engaged. Thrust management:
• calculates reference thrust limits and thrust settings, or follows FMC thrust
settings
• commands thrust levers
October 31, 2007
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