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LSK 5R shows the selectable configuration (SEL CONFIG) page.
This page is used to see the configuration data for loadable
software. It shows only when the airplane is on the ground.
LSK 6R shows the maintenance bite index MAINT page. The
MAINT prompt shows only when the airplane is on the ground
and the groundspeed is less than 20 knots. When the airplane is
in the air, the NAV STATUS prompt shows in place of the MAINT
prompt.
FMCS - DISPLAYS - CDU - INIT/REF INDEX PAGE
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FMCS - DISPLAYS - CDU - INIT/REF INDEX PAGE
FMCS - DISPLAYS - CDU - INIT/REF INDEX PAGE
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THIS PAGE IS INTENTIONALLY LEFT BLANK
FMCS - DISPLAYS - CDU - INIT/REF INDEX PAGE
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Purpose
These are the three position pages:
* Position initialization (POS INIT)
* Position reference (POS REF)
* Position shift (POS SHIFT).
The POS INIT page is used to enter the present position for
ADIRU alignment.
The box prompts show that data must be entered to complete
the preflight. The dash prompts show that the data entry is
optional.
The POS REF page shows airplane position and groundspeed
as calculated by the FMC, each ADIRU, each GPS, and radio
position.
The POS SHIFT page is used to shift the FMC position to the
specified navigation sensor position.
Page Access
You use the INIT REF function key or these CDU pages, to go to
the first position page:
* INIT/REF INDEX
* IDENT
* TAKEOFF REF.
POS INIT Page
Line 2L shows dash prompts for an airport identifier. The
identifiers you put here must also be in the navigation data
base. If the identifier you put in is valid and is in the data base,
the latitude/longitude (LAT/LON) for the airport shows at LSK
2R.
Line 3L shows dash prompts for airport gate identifiers. If the
identifier you put in is valid and is in the data base, the LAT/LON
for the gate shows at LSK 3R. The airport identifier must have
been entered first.
Line 5L shows airplane clock input. The clock input (time and
date) to the FMC is from the GPS. If GPS is not valid, the FMC
calculates time with an FMC internal clock. The time may be set
on this page.
Line 6L shows the INDEX prompt. This selects the INIT/REF
INDEX page.
Line 1R shows the last calculated FMC present position. This
data is saved in the FMC at power down.
Lines 2R and 3R show the LAT/LON position for the reference
airport and gate identifiers set at Line 2L and 3L.
FMCS - DISPLAYS - CDU - POSITION PAGES
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Line 4R shows the header SET IRS POS and box prompts. This
data field is used to enter present position for initialization of the
ADIRUs when the airplane is on the ground.
Line 5R shows the header SET IRS HDG. This data field is used
to enter heading data when any ADIRU is in the attitude (ATT)
mode. It will be blank if there is no ADIRU in the ATT mode.
Line 6R shows the ROUTE prompt. This selects the route page.
POS REF Page
This page shows the airplane position and ground speed
calculated by the FMC, each ADIRU, each GPS and radio
position. Any data field may be selected to the scratchpad and
used to initialize the ADIRUs. These data fields will be blank if
the position data is invalid.
The radio position will always be blank on the ground.
POS SHIFT Page
This page shows the bearing and distance between the FMCS
calculated position shown on the POS REF page and the
position of the ADIRUs, GPS, and radio systems. This page also
provides the capability to update the FMCS calculated position
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