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menu is displayed.
SEND
(downlink
messages)
Displayed when:
• required data
complete, and
• all company message
pages have been
displayed.
Inhibited when transmission
queue is full.
Select:
• message transmission
initiated
• message status displayed
in info box, and
• message cleared from the
display 5 seconds after
status changes to SENT.
Command
key label
Displayed/Inhibited Key function
787 Flight Crew Operations Manual
Communications -
MFD Communications Functions
Boeing Proprietary 5.40.9
STANDBY
(ATC uplink
messages)
Displayed when:
• uplinked message is
received which
requires an
accept/reject
response, and
• STANDBY has not
been previously
selected for this
message.
Standby response is sent.
VERIFY Displayed when data is entered
on more than one of the
following ATC pages:
• ALTITUDE
REQUEST
• ROUTE REQUEST
• SPEED REQUEST.
Displays VERIFY REQUEST page.
Command
key label
Displayed/Inhibited Key function
787 Flight Crew Operations Manual
Communications -
MFD Communications Functions
5.40.10 Boeing Proprietary
Text Entry
Downlink message pages provide text entry fields. Scratchpad entries transfer to
selected entry fields when a cursor select switch is pushed. Scratchpad entries
blank when successfully transferred. Scratchpad entries remain and an INVALID
ENTRY message is displayed in the help window when the entry is not valid.
An entry field resets to a default value when a blank scratchpad is transferred. An
entry field blanks when a space is transferred. An entry field resets to the default
entry prompt when DELETE is transferred.
Box and dash prompts indicate the maximum number of characters allowed.
Some entry fields have format requirements. Entry prompts display the required
entry format, with special characters separating entry boxes. The required data is
entered without the special characters or spaces. Scratchpad data is transferred to
entry boxes after being checked for proper format. Invalid data or format prevents
transfer and displays INVALID ENTRY in the help window.
: :
Required Entry
(box prompt)
Optional Entry
(dash prompt)
Required Format
(special characters)
787 Flight Crew Operations Manual
Communications -
MFD Communications Functions
Boeing Proprietary 5.40.11
Menu Entry Fields
Menu entry fields are used to make text entry selections from a list. Menu entry
fields distinguish mandatory versus optional entry in the same manner as CDU
entry field.
The menu entry field is distinguished from other entry fields by the pointer to the
right of the field.
When initially selected, a list of menu items is displayed to the side of the pointer.
If an item from the list is then selected using the cursor and cursor select switch,
that item is transferred to the entry field. If the menu prompt is selected again and
the scratchpad contains a valid value, that scratchpad value is transferred to the
entry field. Actions for invalid values, an empty scratchpad, space characters, and
the delete key are the same as for CDU entry fields. When the entry field is
selected with text already inserted, the menu list is removed from the display.
Help Window
A help window is provided in both COMM and CDU displays at the bottom of the
MFD to assist in resolving data entry errors and to display FMC information
messages. Help messages, such as INVALID ENTRY, are deleted by selecting the
clear message (CLR MSG) key. Some messages automatically disappear when the
situation ceases to exist or valid data is entered.
LIST ITEM 1
LIST ITEM 2
LIST ITEM 3
Menu Entry Field (not
selected)
Menu Entry Field
(selected)
787 Flight Crew Operations Manual
Communications -
MFD Communications Functions
5.40.12 Boeing Proprietary
Displays help window message title.
Displays text message information to:
• help correct data entry errors
• provide FMC alerting messages
• provide FMC communications messages.
Push –
• removes help window for current message from display
• displays next help message (if one exists).
Displays total number of messages in help window queue.
Displays when loadable ATC RTE CLEARANCE UPLINK message is received.
Push –
• clears ATC message
• enters modified route into FMC for execution
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787机组操作手册Flight Crew Operations Manual 2(25)
