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displays are selected off of the XXXX ALTN page.
Push –
• makes an LNAV route modification for a divert to the selected alternate
• displays the MOD XXXX ALTN page for the selected alternate
• displays SELECTED in place of DIVERT NOW
• blank on ground
• blank in the air when a diversion is not permitted.
Alternate List Page 2/2
The second alternate page displays a list of previously uplinked alternate airports.
The alternates on the ALTN 1/2 page are selected from this list or from the
navigation database when a list does not exist.
9 DIVERT NOW
787 Flight Crew Operations Manual
Flight Management, Navigation -
FMC Descent and Approach
11.43.24 Boeing Proprietary
These four lines contain up to 20 airports from which alternates can be selected
and displayed on ALTN page 1/2 when preferred uplinked airports do not use all
four lines.
The list is uplinked directly to this page. No manual entry is allowed. Manual
airport entries are accomplished on the ALTN 1/2 page.
Push – transmits a datalink request for an alternate airport list uplink.
Push – displays the INIT/REF INDEX page.
When no list exists, alternate airports can be selected from the navigation
database.
Selecting the PURGE prompt arms the purge function and displays a CONFIRM
prompt before the list is deleted.
Push – deletes all airports from the list.
A new list must be uplinked after a purge.
1 Alternate Airports List
2 Alternate List Request (ALTN LIST REQUEST)
3 INDEX
4 Alternate List Purge/Confirm (ALTN LIST PURGE/CONFIRM)
NEXT
PAGE
KG EG
T F
A L T N L I S T A L T N L I S T
K O R D
K R F D
K M S P
K K M C I
K
K
KL NK
F A R
F S D
K D E N
K
K
K
BIL
R A P
M I B
L A P
K
K
K
G
B O I
K P D T S L C
K M W H
K P D X
K S E A
ALTN
ALTN LIST
<REQUEST PURGE>
INDEX
2
2
1 /
2 /
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<
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787 Flight Crew Operations Manual
Flight Management, Navigation -
FMC Descent and Approach
Boeing Proprietary 11.43.25
XXXX Alternate Page
Each of the four alternate airports displayed on the ALTN page 1/2 has a related
XXXX ALTN page. The XXXX ALTN pages display specific data about alternate
airports, the route used for a diversion, and the conditions on which the ETA and
fuel calculations are based. All data on the page is related to the alternate airport
displayed in the page title.
Three route options to the airport can be selected:
• DIRECT TO – direct to alternate
• OFFSET – flight plan route with an offset
• OVERHEAD – flight plan route to a waypoint, then direct to alternate.
The selected route option has an effect on ETA and fuel remaining. It is identified
by <SEL>. Selection of a route option for one alternate selects the same route
option for the other three alternates.
K M W N
<
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VIA
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O V E R H E A D
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A L T
R C
W I N D
A L T / O A T
o C
K M W H E T A / F U E L
Z
K M W H
1430/25.0
/
/
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-
---
--o
.780
FL230
---
DIVERT NOW
ALTN
KMWH ALTN
ELN
L00.0 OFFSET
DIRECT TO <SEL>
<ENG OUT
>
ALTN
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
>
1
2
3
4
5
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787 Flight Crew Operations Manual
Flight Management, Navigation -
FMC Descent and Approach
11.43.26 Boeing Proprietary
Push – selects DIRECT TO route option.
All flight plan waypoints are deleted.
Push –
• with scratchpad empty, selects OFFSET route option
• with offset data in scratchpad, enters offset data. Does not select option.
Entry and exit to the offset is the same as for the RTE page offset. Flight plan
waypoints are retained.
Push –
• with scratchpad empty, selects OVERHEAD option
• with overhead data in scratchpad, enters overhead data. Does not select
route option.
Displays active waypoint in flight plan.
The waypoints up to the selected or entered overhead waypoint are retained, then
routing is direct to the alternate airport. All waypoints after overhead waypoint are
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787机组操作手册Flight Crew Operations Manual 3(86)
