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downlink pages from the ATC main menu. When data is entered into the second
request page, the SEND key changes to VERIFY.
The SEND key is active on the VERIFY REQUEST page. A combined request is
limited to five elements. Selecting a sixth request element displays the MESSAGE
LIMIT EXCEEDED information message.
VERIFY
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787 Flight Crew Operations Manual
Communications -
MFD Communications Functions
Boeing Proprietary 5.40.29
The verify page provides a display of the combined request elements. Each
element is displayed on separate lines. Elements requiring revision before sending
are revised on their respective request page. Selecting SEND transmits the
combined downlink message to ATC.
The example shows a combined altitude and speed request. The altitude request is
created first.
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Communications -
MFD Communications Functions
5.40.30 Boeing Proprietary
When Can We Expect
Making selections asks ATC the time or location the crew can expect clearance for
the requested items. Altitude, speed, and cruise climb entry rules are the same as
on the ALTITUDE REQUEST and SPEED REQUEST pages. Up to three lines of
free text can be included. The SEND key becomes active when a check box is
selected.
PRELIMINARY
787 Flight Crew Operations Manual
Communications -
MFD Communications Functions
Boeing Proprietary 5.40.31
Voice Contact Request
Making selection asks ATC for a voice contact. Up to three lines of free text can
be included. The SEND key becomes active when the request for voice contact
box is selected.
PRELIMINARY
787 Flight Crew Operations Manual
Communications -
MFD Communications Functions
5.40.32 Boeing Proprietary
ATC Logon/Status
The ATC LOGON/STATUS page allows entry of the desired ATC facility for
establishment of a data link connection.
The SEND key is displayed after all logon entries are completed. Selecting the
SEND key displays SENDING status during logon transmission. Five seconds
after the logon status changes to SENT, the page is exited.
Box prompts are initially displayed. Enter the ICAO four letter identifier for the
desired ATC center. The display changes to dashed prompts after establishing an
ATC connection.
1 LOGON TO
1
2
3
4
5
6
7
8
11
9
10
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787 Flight Crew Operations Manual
Communications -
MFD Communications Functions
Boeing Proprietary 5.40.33
Normally displays the flight number entered on the FMC route page. When the
flight number is not available, box prompts are displayed. Flight number entry on
this page is copied to the FMC route page. Changing this entry after establishing
an ATC connection cancels the ATC connection.
Displays filed flight number UTC departure time.
Displays filed flight number departure date.
Displays flight number airport of origin.
Displays the status of the ATC connection, ESTABLISHED or NOT
ESTABLISHED.
Displays the ATC facility identifier where a connection is established.
Displays the ATC facility identifier to which an automatic handoff transfers the
connection.
Elapsed time from transmission to receipt of an ATC uplink message that triggers
a late annunciation. The words “UPLINK DELAY EXCEEDED” precede any late
ATC uplink message. Valid entries are from 1 to 999. Resets to off and displays
dashes at:
• power-up
• datalink system reset
• ATC connection terminated
• “DELETE” entry.
Displays status of ADS connection.
Displays flight number destination airport.
2 FLIGHT NUMBER
3 FILED DEPARTURE TIME
4 FILED DEPARTURE DATE
5 ORIGIN
6 ATC CONNECTION
7 ACTIVE CENTER
8 NEXT CENTER
9MAX UPLINK DELAY
10 ADS STATUS
11 DESTINATION
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Communications -
MFD Communications Functions
5.40.34 Boeing Proprietary
ATC Connection Displays
Displayed when an ATC connection is established.
Selecting ATC DATA LINK OFF displays the CONFIRM OFF selection.
1 ATC DATA LINK OFF
ATC MESSAGE BLOCK
1 2
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787 Flight Crew Operations Manual
Communications -
MFD Communications Functions
Boeing Proprietary 5.40.35
Selecting CONFIRM OFF sends the termination request.
The EICAS ATC DATALINK LOST message is displayed when the connection
is terminated.
Loss of ATC Connection
If the EICAS advisory message DATALINK LOST is displayed for 16 minutes,
the ATC connection is automatically lost and the EICAS advisory message ATC
　
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