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Presented to: DCIT #12 Plenary
By: Andy Fry, Thane Inc.
Date: January 12, 2012
Federal AviationAdministrationData Communications
DCIT Update
Flight Deck Working Group
Data Communications Program2Federal Aviation
AdministrationJanuary 12, 2012
Agenda
• Update on “Then As filed”• Flight Deck Flow - Initial DCL• Sample Clearances• Review of DCIT #12 Discussion Items
Data Communications Program3Federal Aviation
AdministrationJanuary 12, 2012
Then As Filed
• Definition has been completed• At P-30, DCL will be made available for
request to the aircraft by an indication of a of ATC Comm Established message to the flight crew.
• If any revisions come through after the initial DCL, a UM79 or UM83 as appropriate will be sent to the aircraft.
Data Communications Program4Federal Aviation
AdministrationJanuary 12, 2012
Then As Filed
• Maintain Current Flight Deck Procedures for FMS pre-flight.
• When the Filed ATC Flight Plan “A” equals the DCL Clearance “C”, then the DCL Then As Filed clearance will be sent to the aircraft – It is incumbent that the
ARINC 702 Load matches the Filed Flt Plan
Data Communications Program5Federal Aviation
AdministrationJanuary 12, 2012
Flight Deck Flow - DCLFlight Crew Arrives at the Aircraft
Requested AOC RTE Data, PERF Data, T/O Data and Wind Data is
Sent to the aircraft and Loaded into the FMS – After Loading – FMS “RTE
COPY” is selected if available
Requested AOC RTE Data, PERF Data, T/O Data and Wind Data is
Sent to the aircraft and Loaded into the FMS – After Loading – FMS “RTE
COPY” is selected if available
Initiates Normal Pre-Flight
Align the IRU’s /ADIRU and Initialize the FMS
Align the IRU’s /ADIRU and Initialize the FMS
LOGON Received - KMEM – Aircraft on participation listLOGON Received - KMEM – Aircraft on participation list
Complete Normal Aircraft Pre-Flight
ATC Comm Established ATC Comm Established
•Flight Crew Selects ATC Function Key or Menu select
KEY - CPDLC
•Flight Crew Selects ATC Function Key or Menu select
KEY - CPDLC
Select “CLEARANCE” Request and “SEND” Select “CLEARANCE” Request and “SEND”
DCL Request Received - Approved DCL sent to the aircraft
DCL Request Received - Approved DCL sent to the aircraft
ATC Message
•ATC
30 Minutes prior to P Time
Flt Plan correlation, DCL Approved and pending
Flt Plan correlation, DCL Approved and pending
Flight Deck Flight Deck
ATC Function ATC Function
AOC Function AOC Function
LOGON TO KMEMLOGON TO KMEM
Data Communications Program6Federal Aviation
AdministrationJanuary 12, 2012
“Then As Filed” – MCDU
Flight Crew Displays the ATC
DCL Message
Flight Crew Displays the ATC
DCL Message
•Preflight FMS Normally, Verify AOC Uplink against Filed Flight Plan using normal flight crew procedures
•Request DCL – if Cleared “Then As Filed” is received this means there was exact match between the Original Flt Plan and the embedded HOST/ERAM automated FLT plan output/
•Preflight FMS Normally, Verify AOC Uplink against Filed Flight Plan using normal flight crew procedures
•Request DCL – if Cleared “Then As Filed” is received this means there was exact match between the Original Flt Plan and the embedded HOST/ERAM automated FLT plan output/
•Selects “ACCEPT” SEND
•Selects “ACCEPT” SEND
ATC receives a “Wilco” Response
from Aircraft accepting DCL
Clearance
ATC receives a “Wilco” Response
from Aircraft accepting DCL
Clearance
2 1 0 5 z A T C U P L I N K 1 / 2 S T A T U S O P E NC L E A R E D T O K M I A A I R P O R T C L A R E 2 . E I C T H E N A S F I L E DM A I N T A I N 1 0 0 0 0 F T . E X P F L 3 7 0 W I 1 0 M I N A F T E RD E P . D E P F R E Q 1 1 8 . 5 5 E D C T 2 1 4 5 .
- - - - - C O N T I N U E D - - - - - - L O G >A T C M E S S A G E
2 1 0 5 z A T C U P L I N K 2 / 2 S T A T U S O P E NS Q U A W K 0 5 6 2 .
S T A N D B Y < S E N D A C C E P T< R E J E C T S E N D > - - - - - - - - - - - - - - - - - - - - - - L O G >A T C M E S S A G E
Data Communications Program7Federal Aviation
AdministrationJanuary 12, 2012
“THEN AS FILED” (777/787)
Flight Crew Displays the ATC
DCL Message
Flight Crew Displays the ATC
DCL Message
Selects “ACCEPT” SEND
Selects “ACCEPT” SEND
ATC receives a “Wilco” Response
from Aircraft accepting DCL
Clearance
ATC receives a “Wilco” Response
from Aircraft accepting DCL
Clearance
2 1 0 2 z A T C U P L I N K ^
1
C L E A R E D T O K M I A A I R P O R T C L A R E 2 . E I C T H E N A S F I L E D M A I N T A I N 5 0 0 0 F T . E X P F L 3 7 0 1 0 M I N A F T E R D E P T . D E P T F R E Q 1 1 8 . 5 5 E D C T 2 1 4 5 . S Q U A W K 2 4 6 1 .
ACCEPT LOAD FMC PRINT STANDBY REJECT
REASONS REJECT
•Preflight FMS Normally, Verify AOC Uplink against Filed Flight Plan using normal flight crew procedures
•Request DCL – if Cleared “Then As Filed” is received this means there was exact match between the Original Flt Plan and the embedded HOST/ERAM automated FLT plan output/
•Preflight FMS Normally, Verify AOC Uplink against Filed Flight Plan using normal flight crew procedures
•Request DCL – if Cleared “Then As Filed” is received this means there was exact match between the Original Flt Plan and the embedded HOST/ERAM automated FLT plan output/
Data Communications Program8Federal Aviation
AdministrationJanuary 12, 2012
Message Definition – Then As Filed
UM Number
Response Attributes
ASN1Definition
Sample Clearance Additional Information
UM169 [freetext]
Urg(N)/Alr(L)/Resp(R)
FreeText ::= IA5String (SIZE (1..256))
CLEARED TO KMIA AIRPORT CLARE2.EIC THEN AS FILED
UM19 MAINTAIN [altitude]
Urg(N)/Alr(A)/Resp(W/U)/Rec(VC)
LevelType ::= CHOICEAltitudeqnh [0]altitudeflightlevel[6]
MAINTAIN 10000FT
UM169 [freetext]
Urg(N)/Alr(L)/Resp(R)
FreeText ::= IA5String (SIZE (1..256))
EXP FLXXX 10 MIN AFTERDEP. DEP FREQ 118.55EDCT 2145
FL/FT, MIN/MILES, Freq is Ctrl selected from DP, EDCT – display if HADS provides
UM123SQUAWK [beaconcode]
Urg(N)/Alr(M)/Resp(W/U)
Code ::= SEQUENCE SIZE (4) OF CodeOctalDigitCodeOctalDigit ::= INTEGER (0..7)
SQUAWK 0562
Data Communications Program9Federal Aviation
AdministrationJanuary 12, 2012
New Discussion Items• DCL Departure Procedure naming
– Departure Procedures using “RNAV SID” on the UM169 Free Text • Is this necessary? CLARE2.EIC RNAV SID OR CLARE2.EIC
– Recommendation…• Commas between each name e.g., CLARE2,SWB,RNAV,SID
– Recommendation… Remove the Free Text “RNAV DP/SID”
• DCL ALT information – Downstream Reroutes– Inclusion of Initial ALT on revised downstream clearances – UM83 e.g., Re-Stating
previously cleared information• Repeat initial cleared altitude with any trajectory change/reroute?
– Where is the initial DCL, How to ID the right clearance, is setting it in the ALT window enough?
– Recommendation… No need to repeat Maintain ALT for UM83/Downstream clearances.
• Enroute ATC Comm– Auto Session Establishment
• Typically for those areas where DCL ground service is not in use– DCL aircraft will maintain their ATC Comm connection and will be handed off to enroute
automatically• Adaptable parameter similar to the DCL termination action using Time
– Open discussion on ATN/FANS session initiations – ATOP/B1– Recommendations…(Start Point for Discussion) DM Time + X minutes to ensure session
establishment occurs at an altitude greater than 3000 AGL - local adaptation.
Data Communications Program10Federal Aviation
AdministrationJanuary 12, 2012
Questions?