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787 Flight Crew Operations Manual
Flight Management, Navigation Chapter 11
FMC Preflight Section 40
Boeing Proprietary 11.40.1
11.40 Flight Management, Navigation-FMC Preflight Introduction
Completion of the FMC preflight requires data entry in all minimum required data
locations. Entry of all required and optional preflight data optimizes FMC
accuracy.
Datalink can load preflight data from airline ground stations. Using datalink
reduces the number of required flight crew actions. Manual flight crew entries
replace existing data.
Preflight Page Sequence
The identification page usually displays when power is applied to the FMC.
Preflight flow continues in this sequence:
• identification (IDENT) page
• position initialization (POS INIT) page
• route (RTE) page
• DEPARTURES page (no prompt)
• navigation radios (NAV RAD) page (no prompt)
• performance initialization (PERF INIT) page
• EFB PERFORMANCE T/O application (no prompt)
• thrust limit (THRUST LIM) page
• takeoff reference (TAKEOFF REF) page
Some of these pages are also used in flight.
787 Flight Crew Operations Manual
Flight Management, Navigation -
FMC Preflight
11.40.2 Boeing Proprietary
Minimum Preflight Sequence
During preflight, a prompt in the lower right directs the flight crew through the
minimum requirements for preflight completion. Selecting the prompt key
displays the next page in the flow. If a required entry is missed, a prompt on the
TAKEOFF page leads the flight crew to the preflight page missing data.
Airplane GPS position is necessary for FMC preflight and flight instrument
operation. Entry of inertial position is optional as the IRS has continuous access
to GPS position.
A route must be entered and activated. The minimum route data is origin and
destination airports, and a route leg.
Performance data requires entry of airplane weights, fuel reserves, cost index, and
cruise altitude.
THRUST LIM TAKEOFF REF TAKEOFF REF
ACCEPT> THRUST LIM>
FMC
SEND TO
PERFORMANCE T/O
REQUIRED EXEC LIGHT ILLUMINATES
ROUTE>
POS INIT>
SID
FLIGHT
INITIALIZE
MAIN MENU
IDENT
DEPARTURES
ACTIVATE>
RTE 1
THRUST LIM>
PERF INIT
ELECTRONIC FLIGHT BAG
PERF INIT>
ACT RTE 1
ROUTE>
POS INIT
TAKEOFF>
ARR
DEP
EXEC
w8mt-34-00-0060
787 Flight Crew Operations Manual
Flight Management, Navigation -
FMC Preflight
Boeing Proprietary 11.40.3
Takeoff data requires a flap setting and center of gravity.
Supplementary Pages
Supplementary pages are sometimes required. These pages have no prompts and
interrupt the usual sequence. Discussions of each page includes methods to
display the page.
When the route includes SIDs and STARs, they can be entered using the
DEPARTURES or ARRIVALS pages.
Route discontinuities are removed and the route is modified on the ROUTE and
RTE LEGS pages. Speed/altitude restrictions are entered and removed on the RTE
LEGS page. The RTE LEGS page is described in the FMC Cruise section of this
chapter.
Alternate airports are added on the ALTN page. The ALTN page is described in
the FMC Descent/Approach section of this chapter.
Waypoints, navigation, airport, and runway data is referenced on the REF NAV
DATA page. The REF NAV DATA page is described in the FMC Cruise section
of this chapter.
Fixed takeoff thrust derates can be changed on the AIRLINE POLICY page.
VNAV performance is improved if forecast winds and temperatures are entered
during the preflight. Wind and temperature data for specific waypoints is entered
on the WIND page. The WIND page is described in the FMC Cruise section of
this chapter.
Preflight Pages – Part 1
The preflight pages are presented in the sequence used during a typical preflight.
Initialization/Reference Index Page
The initialization/reference index page allows manual selection of FMC pages. It
gives access to pages used during preflight and not usually used in flight.
787 Flight Crew Operations Manual
Flight Management, Navigation -
FMC Preflight
11.40.4 Boeing Proprietary
The IDENT page is used to verify basic airplane data and currency of the
navigation database.
1 Identification (IDENT)
W8MT-34-00-0032
INIT/REF INDEX
<
>
>
>
>
>
<
<
<
<
<
IDENT
MAINT
NAV DATA
ALTN
SUPP NAV DATA
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787机组操作手册Flight Crew Operations Manual 3(41)
