1. FANS-1/A and ATN Data Link: An Avionics Perspective Bob Kerr bob.kerr@honeywell.com

2. ATN 2000 - London - Sept. 20002 Agenda Aviation Data Link Users Today’s ATC Data Link: FANS-1/A The Next Step: ATN System Accommodations Lessons Learned Conclusion

3. ATN 2000 - London - Sept. 20003 Potential Aviation Data Link Users

4. ATN 2000 - London - Sept. 20004 FANS 1/A Data Link - Overview Augments other ATM functions, e.g. RNP ATC Communications using existing ACARS data link infrastructure – Automatic Dependent Surveillance – ATC Data Link - (pilot  controller communications) Aircraft Equipped (current or available soon) – Boeing 717, 747-400, 757, 767, 717, MD-90, MD-10, MD-11 – Airbus A320 family, A330, A340 – Planned for Classic retrofit, Biz Jets, military transports,... Regions – Oceanic and Remote Airspace Benefits – Crew workload (replaces routine HF communications) – Dynamic Re-routing – User-preferred Trajectory (available soon)

5. ATN 2000 - London - Sept. 20005 Satcom HF Radio A429 Analog VHF Radio A429 Equipment Requirements - FANS-1/A D/L FMS A-618,A-622 A-724B ACARS MU MFD MCDU Data Link Key

6. ATN 2000 - London - Sept. 20006 Satcom HF Radio A429 FMS MFD MCDU Equipment Requirements - ATN A-758 CMU ATN Router & Applications A-429 A-750 VHF Data Radio VDL Mode 2 Protocol Update Data Level 3 ATN Applications CHI Upgrade

7. ATN 2000 - London - Sept. 20007 VDR Growth <200020002001 Increased Functionality Today’s VHF Radio Mode 0 25 kHz/8.33 kHz FM Immunity 2400 bps ACARS MSK Modulation Internal Modem ARINC 429 Buss to CMU/ATSU D8PSK Modulation Spectrum Mask 31.5 kbps data link Mode 2 VHF Radio 2 nd DSP Mode A VHF Radio Modem

8. ATN 2000 - London - Sept. 20008 CMU Growth ACARS Messaging Support for FANS-1 ATC Messages ARINC 623 ATC Apps (PDC, OCX, ATIS, etc) Uses MCDU or Proprietary CDU Today’s ACARS MU or ATSU Today’s Systems200120022004 - 2007 Increased Functionality ATN Baseline 2 Applications Dual Operation Enhanced Security (authentication and encryption) Network Management VDL Mode 2 AOA ARINC 758 or 724B ATN Protocols ATN Baseline 1 Apps (CM, ADS, CPDLC) Data Link CDU VDL Mode 2 CMU (ARINC 758) ATN Compliant CMU CMU

9. ATN 2000 - London - Sept. 20009 FMC Data Link Growth Today’s Systems 2005 - 2007 Increased Functionality ATN Baseline 1 Support Auto-load route uplink ADS data transmission ATN Baseline 2 Support Clearance requests Clearance uplinks ACARS Apps (AOC) FANS 1/A Apps ARINC 622 Today’s Flight Management Computer CPDLC Compliant Flight Management Computer

10. ATN 2000 - London - Sept. 200010 Integrated Avionics Data Link Growth Today’s Systems 2005 - 2007 Increased Functionality ACARS Apps (AOC) FANS 1/A Apps ARINC 622 VDL Mode 2 AOA ATN Protocols ATN Applications (CM, ADS, CPDLC) Today’s Integrated Avionics Computer e.g. AIMS, EPIC CPDLC Compliant Integrated Avionics Computer

11. ATN 2000 - London - Sept. 200011 Crew Interface 2119Z FROM KZAK CTL WILCO* OPEN AT ALCOA CLB TO & MAINT FL310 STDBY** UNABLE < OTHER DCDU MCDU MFD

12. ATN 2000 - London - Sept. 200012 Integration Challenges

13. ATN 2000 - London - Sept. 200013 System Accommodations FANS-1/A and ATN Services will co-exist into the future Different communications infrastructure Different message definitions – but some mapping is possible Operational and Service differences must be minimized Accommodation possible on aircraft, ground, or both – Possibility of reduced benefits regionally Under analysis in RTCA SC-189/EuroCAE WG-51

14. ATN 2000 - London - Sept. 200014 Lessons Learned (1) Programmatic – Tight configuration management for successful interoperability – Close cooperation between the participating ATC Service Providers is required – Technology introduction quicker than modifications to operational procedures – Operational benefits not as early as planned

15. ATN 2000 - London - Sept. 200015 Lessons Learned (2) Human Factors – Pilot interface must be carefully designed – Adequate crew training is expensive but mandatory Technical – Compatibility of air and ground navigation data base – Significant operational benefits accrue from tight interface with Flight Management System  ‘Auto-load’ of Route Clearances, etc. – High integrity and robust data link infrastructure required to support ATC data link safety requirements

16. ATN 2000 - London - Sept. 200016 Conclusions FANS-1/A ATC Data Link suitable for oceanic and remote geographic regions into the future ATN ATC Data Link is NOT an immediate replacement for FANS-1/A – Supports different airspace needs – Supports different user mission needs Successful ATC Data Link requires tight integration between Communication system and other avionics – CHI : ‘Pilot friendly interface’ – FMC : CPDLC integration with the ‘navigator’

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