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new alignment will start.
ADIRS - ALIGNMENT PROCEDURE 2
EFFECTIVITY
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ADIRS - ALIGNMENT PROCEDURE 2
ADIRS - ALIGNMENT PROCEDURE 2
EFFECTIVITY
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Present Position Entry
You must enter present position data for the ADIRU during
alignment. The ADIRU calculates present position latitude but it
cannot calculate present position longitude. The ADIRU uses
your entry for latitude and longitude. The ADIRU compares your
latitude entry to its calculated value to make sure its calculation
of latitude is correct.
You can use the ISDU or the FMC CDU to enter present position
data. When both ADIRUs are in alignment mode, you only need
to enter the data one time. The data goes to both ADIRUs. If you
make a wrong entry, you can enter the data again. The ADIRUs
use the last data entry that you make.
ADIRS - ALIGNMENT PROCEDURE 3
EFFECTIVITY
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ADIRS - ALIGNMENT PROCEDURE 3
ADIRS - ALIGNMENT PROCEDURE 3
EFFECTIVITY
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CDU Present Position Entry
ADIRS present position can be set using the FMC CDU. Push
the INIT/REF key on the CDU to show the position initialization
(POS INIT) page. From this page, there are these three
procedures that you can use to enter present position for the
ADIRUs:
* Transfer position data from LAST POS line
* Transfer position data from REF AIRPORT line
* Enter position data using CDU keyboard.
You can also transfer GPS present position from the CDU POS
REF page.
LAST POS Transfer
Do this to transfer position data from the LAST POS line on the
CDU to the ADIRUs:
* Push line select key (LSK) 1R. The position data moves to the
scratchpad
* Push LSK 4R. Position data moves from scratchpad to the
SET IRS POS boxes.
ADIRS - LAST POSITION PRESENT POSITION ENTRY
EFFECTIVITY
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ADIRS - LAST POSITION PRESENT POSITION ENTRY
ADIRS - LAST POSITION PRESENT POSITION ENTRY
EFFECTIVITY
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REF AIRPORT Transfer
Do this to transfer position data from the REF AIRPORT line on
the CDU to the ADIRUs:
* Use the CDU keyboard to enter the airport code in the
scratchpad.
* Push LSK 2L. The airport code moves to REF AIRPORT and
airport position data shows.
* Push line select key (LSK) 2R. The position data moves to the
scratchpad.
* Push LSK 4R. The position data moves from the scratchpad
to the SET IRS POS boxes.
NOTE: Some reference airports also have the position of
gates. Enter the gate number in the scratchpad after
you push LSK 2L. Push LSK 3L and the gate position
will show. This position may be used as present
position.
ADIRS - REFERENCE AIRPORT PRESENT POSITION ENTRY
EFFECTIVITY
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ADIRS - REFERENCE AIRPORT PRESENT POSITION ENTRY
ADIRS - REFERENCE AIRPORT PRESENT POSITION ENTRY
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CDU Keyboard Entry
Do this to enter position data from the keyboard on the CDU to
the ADIRUs:
* Use the keyboard to enter the position data into the
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