Courtesy Copy Messages DCIT WG meetings 3/6/2012

Messages – Initial Clearance – Revised Clearances – Acknowledgement Initial and Revised messages virtually identical Format allows for flexibility Format intended to be similar to existing (PDC) messages from TDLS.

Clearance ^AQU {IATA address TO}. {IATA address FROM} {DDHHMM} ^B CCI <- new TEI {Sequence number} COURTESY COPY – NOT AN ATC CLEARANCE {Flight ID *A} {Beacon code field #20} {field #1} {Equipment *B} P{Departure time *C} {Computer Identifier *D} {field #19} {Route Information *E} three copies of this field allowed {Free Text *F} six copies of this field allowed {Free Text Additional *G} additional fields allowed as needed

Notes A: Flight ID is not in the FANS message, should it be blank or derived from other DTAP information? B: Equipment type is not in the FANS message, should it be blank or derived from other DTAP information? C: Departure time is not in the FANS message, should it be blank or derived from other DTAP information? D: Computer Identifier is not in the FANS message, should it be blank or derived from other DTAP information? E: Route information consists of fields #2, #3, #4, #5, #6, #7, #8. F: Free text consists of fields #10, #13, #14, 15, #16, #17, #18, #20, #21 G: Free text added consists of fields #18, #20, #21. This field includes all of the fields that are not in the PDC message today.

Outstanding questions/issues The message size is limited and likely will not support a clearance with 128 route elements. It is not clear how RouteInformationAdditional is used in DCL. For now we assume that it is simply converted to text and included in the {free text}. We assume that Special Instruction [freetext] will be included in the {free text} portion of the message.

LineTextNotes 1^AQU ANPOCWNDestination 2.OKCTWXA Automation System address 3^BCCISMI 4001 COURTESY COPY – NOT AN ATC CLEARANCESequence number and notification 5SWA KOCKTail number, beacon and departure airport 6H/B744/Q P1330Equipment and departure time Computer code and altitude 8KBWI --- PROC1 --- APPR2 --- Departure airport, placeholder for departure runway, departure procedure, placeholder for arrival runway, approach procedure, placeholder for arrival procedure 9IRW IRW/N16W006 ADM321 J999Route Information 10THEN AS FILEDFree text 11DEPARTURE SPEED 300KFree text 12DEPARTURE HEADING 010DTFree text 13NO DELAY EXPECTEDFree text 14SPECIAL INFORMATIONFree text 15FREQ Free Text additional 16MAINT 10000FTFree Text additional 17SQUAWK 4356Free Text additional 18ATIS XFree Text additional 20^CETX EXAMPLE COURTESY COPY