20110928_DCP_DCIT_Demo_Draft.doc

MITRE
Departure Clearance (DCL) DCIT Demo
Flight Crew Procedures for the MITRE Idea Lab
Background
The purpose of this handout is to provide DCIT members a general background of CPDLC
(Controller Pilot Data Link Communications) procedures specific to Departure Clearances (DCL)
on the ground and a general orientation of the MITRE Idea Lab environment.
CPDLC
CPDLC is similar to ACARS in that ATC flight information is passed via datalink between the ATC
controller and the flight crew. The CPDLC datalink application is hosted by the aircraft Flight
Management System or FMS and is accessed through the MCDU via the ATC Function Key. Also,
an aircraft audio chime module along with an “ ATC” EICAS message indication will give the
flight crew notification of the receipt by the aircraft of an ATC CDPLC message. Uplink and
Downlinked messages are stored in a message log for the flight crew to review messages that
may have been sent or received by the aircraft.
Controls and Indicators
The following is an example of the EICAS advisory message of  ATC and the MCDU ATC
Function Key.
EICAS Advisory Message of an ATC message and MCDU ATC Function Key:
Basic CPDLC Responses to an Uplinked Departure Clearance (DCL):

ACCEPT: Agree with the uplinked message

REJECT: Reject or unable an uplinked message

Standby: Allows the flight crew to delay action
on the message, message is still pending

Load: Allows the flight crew to load their FMS
RTE Page with an ATC Route Clearance

LOG: selecting LOG allows you to retrieve and
view CPDLC messages
Flight Crew Procedures
For the MITRE DCL Demo you will be located at DFW at a gate location preparing for a normal
flight between DFW to MIA. It is assumed you have been appropriately dispatched between the
city pair on your survey flight and that the aircraft is in proper working order without any
outstanding MEL’s. You will be provided normal flight crew information that you may use for
your flight which will include:
 Flight Plan route of flight
 Aircraft Performance information
 Weather information
 Airport diagrams
Once in the cockpit, your normal preflight duties have been completed except those related to
the FMS. Also, your aircraft is already logged on to KUSA and you are ready to request your
Departure Clearance via CPDLC. All other AOC request would come after receipt of your DCL
clearance and normal flight crew procedures to complete the pre-flight would be accomplished.
To view your CPDLC LOGON page select the ATC Function Key on the MCDU:
KUSA
You will notice at 3R “ACT CTR” that you are logged on to KUSA. After that, select ATC Index at
6L to view the main CPDLC index page to request a Departure Clearance. Select the following:
 CLEARANCE …………….…………Select
 REQUEST CLEARANCE…………Select
 SEND…………………………………..Select
Once you hear an Audible Tone with an  ATC EICAS Advisory indication, select the MCDU ATC
function key to view the uplinked message. The message will have the following format:
Page one of Initial DCL Clearance:
C
C
M
E
D
E
S
A
1
5
0
5
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2
A
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1
R O U T
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1 0 0
7 0
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4 5 Z .
0 5 6 2 .
L
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S T A T U S
O P E N
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C L E A R A N C E .
N A V
D P .
0 0 F T .
1 0 M I N
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Q
1 1 8 . 5 5
-
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Page two of Initial DCL Clearance
<
<
A
1
5
0
A
N
N
D
D B Y
R E J
- - -
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-
C
-
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-
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S T
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Detail description of Initial DCL Clearance:

CLEARED ROUTE CLEARANCE
o FMS loadable portion of your uplinked clearance and viewable on the FMS
Route page after selecting the load prompt at 4R on the MCDU.


DFW.EIC..AEX.J50..CEW.J2..SZW.SSCOT1.MIA
CLARE2.EIC RNAV DP
o Departure procedure and Runway must be manually entered in the FMS


Runway is selected from the best available information (ATIS, TWR)
MAINTAIN 10000 FT
o This will be your “Initial” cleared altitude. This Initial altitude must be manually
selected on your Flight Guidance Panel.


NOTE: Expect altitudes will not normally be included in an uplinked
message unless different from filed. See an airport DP concerning
expect altitudes.
EXP FL370 WI 10MINSAFT DEP. DEP FREQ 118.55. EDCT 2145Z.
o Your Expect altitude will be per your filed flight plan altitude.
o Frequency may be loaded into the Radio Tuning Panel, if available
o EDCT is noted as information for the flight crew.

SQUAWK 0562
o Must be manually inserted in your transponder panel.
Once the Initial DCL Clearance has been loaded and the flight crew has completed the FMS preflight to include PERF, Takeoff and Wind Data you can expect a Revised Clearance due to some
weather near CEW VOR. The clearance will have the following format:
R
A
C
M
1
5
0
I
C
E A
I N
T A
E N
S
E
R
T
N
D
R E J
- - -
E
-
E D
R O U T E .
W
C L E A R E D
R O U T E
A N C E .
A I N
1 0 0 0 0 F T .
D B Y
L
A C
C T
S
- - - - - - - - - - - - - -
E
T
L
A
S
S
<
<
A
T
V
C
M E
9
S
z
S
A
T
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U P L
I
N K
1 /
S T A T
O P
O
C
E
L
A
E
N
O
1
U S
E N
D
P
D
G
>
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>
>
A G E
Detail description of Revised DCL Clearance:

Revised Route
o Free Text message describing the revision to your original clearance in this case
“Revised Route”

AT CEW CLEARED ROUTE CLEARANCE
o Loadable portion of your uplink from CEW to destination airport - MIA

Select LOAD @ 4R to load the new route portion of this clearance into
the FMS


NOTE: all previous FMS data will be retained – the only revised
information associated with this route clearance will be route
information from CEW to KMIA.
MAINTAIN 10000FT
o All revised clearances that contain a trajectory change will have an initial
altitude included with the uplink as a reminder to the crew.
Flight Crew Procedures for DCL
Audible Chime with EICAS  ATC
Responding to an Uplinked Clearance
 ATC MCDU Key……………………………….Select
Return to the ATC Communication
View the message and act appropriately on
message and after the flight crew agrees
the message.
with the ATC Departure Clearance and
have verified route upload to the FMC
Ensure you verify the Altitude and Squawk as
 ACCEPT …………………………………………..Select
part of the uplinked Clearance.
Standby , Reject are also available
response as needed by the flight crew
Request a Departure Clearance (DCL)
Manual Entry of DP and Runway
 ATC MCDU Key………………………………..Select  Dept/ARR…………………….………………….Select
 Clearance 4R……………………….…………..Select  RWY…………………………………………………Select
 SEND………………………………………………..Select  Procedure………………………………………..Select
 Transition…………………………….………….Select
 RTE…………………………………………..……..Select
Verify the appropriate Departure
procedure, Runway and Transition are
correct against the DCL with no Route
Discontinuities
 Execute……………………………………….…..Select
Loading and Verifying an FMS uplinked DCL
LEGS Page / Distance check for Uplinked DCL
ATC Function Key…………………………………Select
 Load…………………………………………………Select
LOAD prompt automatically updates FMC
RTE page with route clearance
information.
 FMC RTE ………………………………………….Select
 Verify ……………………………………DEPT Airport
 Verify ……………………………………DEST Airport
 Verify …………………………………………..Runway
If part of the Uplinked Clearance,
otherwise this is a manual entry
 Verify ………………………………………….FLT NO:
For Example:CAL123
 Verify………………………………….Cleared Route
The Departure Procedure and Runway may
require manual entry
 Activate…………………………………………..Select
 EXEC ……………………………………………….Select
to complete the RTE page upload
 LEGS ……………………………………………….Select
 Map Mode………………………………………Select
Step through the legs page using “Step” at
6R and observe on the Navigation
Display:
o Waypoints and Altitude constraints
agree with those on your filed
flight plan and navigation charts,
and
o No discontinuities exist between
waypoints
 Verify that an active waypoint is depicted
in 1L on LEGS page 1
 Verify the total route distance is proper for
route of flight versus your filed flight plan
Notes
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