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FANS-1/A and ATN Data Link: An Avionics Perspective. Bob Kerr bob.kerr@honeywell.com. Agenda. Aviation Data Link Users Today’s ATC Data Link: FANS-1/A The Next Step: ATN System Accommodations Lessons Learned Conclusion. Potential Aviation Data Link Users. FANS 1/A Data Link - Overview.

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Fans 1 a and atn data link an avionics perspective

FANS-1/A and ATN Data Link:An Avionics Perspective

Bob Kerr

bob.kerr@honeywell.com


Agenda
Agenda

  • Aviation Data Link Users

  • Today’s ATC Data Link: FANS-1/A

  • The Next Step: ATN

  • System Accommodations

  • Lessons Learned

  • Conclusion

ATN 2000 - London - Sept. 2000


Potential aviation data link users
Potential Aviation Data Link Users

ATN 2000 - London - Sept. 2000


Fans 1 a data link overview
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)

ATN 2000 - London - Sept. 2000


Equipment requirements fans 1 a d l
Equipment Requirements - FANS-1/A D/L

MFD

HF Radio

A429

A-724B

ACARS MU

Satcom

A429

FMS

A-618,A-622

MCDUData LinkKey

Analog

VHF Radio

ATN 2000 - London - Sept. 2000


Equipment requirements atn

Protocol Update

Data Level 3

A-750VHF Data Radio

VDL Mode 2

A-429

Equipment Requirements - ATN

MFD

CHI Upgrade

HF Radio

A429

A-758 CMU

ATN Router &

Applications

Satcom

A429

FMS

ATN Applications

MCDU

ATN 2000 - London - Sept. 2000


Vdr growth

Mode 2 VHF Radio

Mode A VHF Radio

2nd DSP

Modem

VDR Growth

Increased

Functionality

Today’s VHF RadioMode 0

  • 25 kHz/8.33 kHz

  • FM Immunity

  • 2400 bps ACARS

  • MSK Modulation

  • D8PSK Modulation

  • Spectrum Mask

  • 31.5 kbps data link

  • Internal Modem

  • ARINC 429 Buss to CMU/ATSU

<2000

2000

2001

ATN 2000 - London - Sept. 2000


Cmu growth

ATN Compliant

CMU

VDL Mode 2

CMU

(ARINC 758)

CMU Growth

Increased

Functionality

Today’s ACARS MU or ATSU

  • ATN Baseline 2

  • Applications

  • Dual Operation

  • Enhanced Security

  • (authentication and

  • encryption)

  • Network Management

  • ACARS Messaging

  • Support for FANS-1 ATC Messages

  • ARINC 623 ATC Apps (PDC, OCX, ATIS, etc)

  • Uses MCDU or Proprietary CDU

  • ATN Protocols

  • ATN Baseline 1 Apps (CM, ADS, CPDLC)

  • Data Link CDU

  • VDL Mode 2 AOA

  • ARINC 758 or 724B

Today’s Systems

2001

2002

2004 - 2007

ATN 2000 - London - Sept. 2000


Fmc data link growth

CPDLC Compliant Flight Management Computer

FMC Data Link Growth

Increased

Functionality

Today’s Flight Management Computer

  • ATN Baseline 2 Support Clearance requests Clearance uplinks

  • ATN Baseline 1 Support Auto-load route uplink ADS data transmission

  • ACARS Apps (AOC)

  • FANS 1/A Apps

  • ARINC 622

2005 - 2007

Today’s Systems

ATN 2000 - London - Sept. 2000


Integrated avionics data link growth

CPDLC Compliant Integrated Avionics Computer

Integrated Avionics Data Link Growth

Increased

Functionality

Today’s Integrated Avionics Computere.g. AIMS, EPIC

  • ATN Protocols

  • ATN Applications (CM, ADS, CPDLC)

  • VDL Mode 2 AOA

  • ACARS Apps (AOC)

  • FANS 1/A Apps

  • ARINC 622

2005 - 2007

Today’s Systems

ATN 2000 - London - Sept. 2000


Crew interface

AT ALCOA

CLB TO & MAINTFL310

2119Z FROM KZAK CTL

OPEN

* UNABLE

STDBY*

< OTHER

DCDU

WILCO*

MCDU

MFD

Crew Interface

ATN 2000 - London - Sept. 2000


Integration challenges
Integration Challenges

ATN 2000 - London - Sept. 2000


System accommodations
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

ATN 2000 - London - Sept. 2000


Lessons learned 1
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

ATN 2000 - London - Sept. 2000


Lessons learned 2
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

ATN 2000 - London - Sept. 2000


Conclusions
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’

ATN 2000 - London - Sept. 2000