1. GROUND-GROUND STRINGAIR-GROUND STRING AVIONICS CSP AOC DTAP NESG HADDS

2. AVIONICS CSP AOC DTAP HADDS NESG AIR-GROUND STRING

3. AFN LOGON Logon Request Logon Response Logon Accept Indication HADDS FLIGHT DATA AVIONICS CSP DTAP NESG ATC Controller Pilot FP Correlation AOC

4. AVIONICS CSP DTAP NESG ATC Controller Pilot DEPARTURE CLEARANCE (ALREADY LOGGED ON) Departure Clearance Courtesy Copy (CCI) Send DCL WILCO AOC Departure Clearance Request CPDLC Session Start Response CPDLC Session Start Session Established Departure Clearance Departure Clearance Courtesy Copy (CCA)

5. AVIONICS CSP DTAP NESG ATC ControllerPilot REVISED DEPARTURE CLEARANCE (ALREADY LOGGED ON, SESSION ESTABLISHED) Departure Clearance Courtesy Copy (CCR) WILCO AOC Revised Departure Clearance Send Revised DCL HADDS REVISED FLIGHT DATA Departure Clearance Courtesy Copy (CCA)

6. AVIONICS CSP DTAP NESG ATC ControllerPilot DCL SERVICE Departure Clearance Courtesy Copy (CCI) WILCO AOC Departure Clearance Send DCL HADDS FLIGHT DATA Logon Accept Indication Logon Request Logon Response Departure Clearance Request CPDLC Session Start Response CPDLC Session Start FP Correlation Session Established Departure Clearance Courtesy Copy(CCA) Departure Clearance Courtesy Copy (CCR) WILCO Revised Departure Clearance Send Revised DCL Departure Clearance Courtesy Copy (CCA)

7. HADDS HID HOST ERAM HADDS HID HOST ERAM NESG ED-8 ACY Airline HOST DEMARC TEST ED-8 ACY FAA Technical Center FNTB DEMARC FTI OPS IP HADDS HID HOST ERAM DTAP MOUSE KYBRD MONITOR OS FDP DCL AFN HMI FANS 1/A+ STACK 1 2 3 2,3 ARINC SITA IP TEST TOWER TDLS DCL Trials Architecture Airline HOST ARTCC 2 3 2,3 HADDS CSP & API DATA RECORD DEMARC TDLS PC-RCU Strip Printer

8. HADDS HID HOST ERAM NESG ED-8 ACY Airline HOST DEMARC DTAP MOUSE KYBRD MONITOR FDP DCL AFN HMI FANS 1/A+ STACK ARINC SITA FAA Technical Center Trials Lab System Test - DCL TRIALS ARCHITECTURE Airline HOST HADDS CSP & API DATA RECORD DEMARC PC-RCU HADDS AVIONICS Sim, playback Fans 1/A+ FAA Technical Center FNTB Subnetworks Airlines Tech Center Project Aircraft – N47 Strip Printer 618-622-do258a 620-622-do258a IP 620-622-do258a IP 620-622-do258a IP Rs 429

9. Time Line : Pre-Conditions Logon-to-FP Correlation Occurs FP is Forwarded to DTAP Controller Prepares DCL Pilot Logs On Session is Established Pilot Requests DCL Event can happen anytime between the time barriers FP is Filed ~ 30 minutes before departure ~ 2 hrs. before Departure Time

10. Logon Info Logon Info: Aircraft Registration (Tail Number) Flight ID, aircraft position, and application information Logon-to-FP Correlation LogonFO Tail Number Flight ID ICAO Facility IDDeparture Airport Flight State: Proposed Seeking Logon Data No Active Flight Plan Deposit the logon data in the flight object Set the identified logon to Active Identify the flight object in the logon record

11. DTAP Protocol Stack D8PSK MSK AVLC POA Air/Ground Routing Function A620 ACARS Processing NULL 622 FANS DCL / AFN D8PSK MSK AVLC POA 618 (VHF) Air/Ground Routing Function A620 ACARS Processing MATIP TEI Processing 618 (VHF) 8802 LAN IP A620 ACARS Processing NULL 622 FANS DCL/ AFN MATIP Telco IP DTAP CSP Aircraft FAA Telco Service /LAN A/G Service NESG BATAP