ATS DATALINK CENTRAL REPORTING AGENCY ACTIVITIES

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ATS DATALINKCENTRAL REPORTING AGENCY ACTIVITIES

• YOSHIRO NAKATSUJI
• JCAB CENTRAL REPORTING AGENCY

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Our presentation includes
ATS Datalink Central Reporting Agency Activities

• 1. ADS/CPDLC ATC Systems
• 2. FIT CRA and RASMAG
• 3. Example of Problem Reports
• 4. Operational Performance

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ADS/CPDLCATC SYSTEM
ATS Datalink Central Reporting Agency
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Oceanic Sector with Electric Strips and CPDLC
Display at Tokyo ACC
1. ATS Datalink and its usage
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Oceanic Traffic Situation Display used at Tokyo
ACC
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ADS Position Displayed on ATC ScreenTokyo ACCs
Oceanic System
1. About ATS Datalink
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2. FIT CRA and RASMAG

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Whats FIT ?FIT Structure
2. FANS Interoperability Team

IPACG/ISPACG
Report
FIT (FANS Interoperability Team)
Report
CRA (Central Reporting Agency)
U.S. and Japan provide CRAs for FIT.
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RASMAG

• Regional Airspace Safety Monitoring
• Advisory Group / APANPIRG
• RASMAG is a group responsible for airspace
  safety monitoring in Asia/Pacific airspace
  regarding
• ATS DATALINK Monitoring
• RVSM Monitoring
• RNP Monitoring

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Who are stakeholders ?
2. FANS Interoperability Team

• FIT is the datalink specialists work group of
  ISPACG IPACG
• Representatives of all these parties below
  participate in this activity
• Air Traffic Service Providers
• Aircraft Operators
• Aircraft and Avionics Manufacturers
• Datalink Service Providers(DSP)
• ATC Systems Manufacturers
• States Regulatory Authorities
• International Organizations

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What are FIT responsibilities ?
2. FANS Interoperability Team

• The FIT(FANS Interoperability Team)
  oversees the monitoring process to ensure the ATS
  datalink system continues to meet its
  performance, safety, and interoperability
  requirements and that operations and procedures
  are working as planned.
• FIT is responsible to
• review Problem Reports and determines resolution
• develop interim operational procedures
• monitor progress of problem resolution
• prepare summary of problems
• assess system performance
• authorize and coordinate for system testing

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Whats CRA ?
3. CRA Activities

• CRA Central Reporting Agency
• is an organization tasked with the regular
  dissemination of de-identified information on
• statistical performance data based on Periodic
  Status Reports prepared by ATS providers, and
• Problem Reports sent from stakeholders and their
  processing status rectification progress

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ATS Datalink Central Reporting Agency

• 3. Example of
• Problem Reports

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An Example of Problem ReportsImproper CPDLC
Position Report

• FMS Database includes non-ATC waypoints and
  provides pilots with these information.
• A Pilot downlinked CPDLC Position Report for
  Non-ATC Waypoint.
• When repeated, it increases pilots and
  controllers workload and communication load.
• Operators were requested to educate pilots to
  send ATC Compulsory Reporting Point only.

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An Example of ADS Problem ReportsEmergency
Reports from Non-Emergency Aircraft

• When a pilot operates EMERGENCY SELECT ON or
  EMG Button , ADS EMG Mode is engaged and the
  avionics downlinks emergency messages.
• ATC System receives it and display the aircraft
  identification with EMG Tag on ATC screen.
• However, actually the aircraft was not in
  emergency.
• Supposed to be pilots mishandling of ADS.
• Manufacturer took a remedial action.

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Example WX Deviation with Heading Mode
Actual Flight Path
Flight Direction and Position Displayed on ATC
Screen
Heading Select
Weather
21NM
Planned Route
NEXT WAY POINT
Abnormal aircraft positions and flight directions
may be displayed for an aircraft on ATC screen,
when the pilot selects Heading Mode for weather
deviation, instead of FMS Offset.
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VHF Coverage Fringe Area

• Satellite Coverage Space

Aircraft downlinked acknowledge, but failed,
because of out of VHF coverage.
VHF ? SATCOM ??...
No acknowledge from aircraft
DSP sends MAF (Message Assurance Failure) to ATC
Center
ATC uplinked a message to aircraft
VHF Coverage
VHF Coverage
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Central Reporting Agency Activities

• 4. Operational
• Performance

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Nature of Traffic in Tokyo FIR

• Average Number of Traffic in Tokyo Oceanic
  Airspace (September 2003)
• 442 aircraft per day
• Average Number of Successful CPDLC Connections
  (September 2003)
• 127 aircraft per day
• CPDLC Connection shares about 29 ,
• and about 50 for North Pacific.

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Trend of Number of Successful CPDLC Connections

• 130
• 120
• 110
• 100
• 90
• 80
• 70
• 60

Number per Day
Monthly Average / March 2002 October 2003
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System Performance Analysis
3. Activities of CRA

• CRA analyzes System Performance based on monthly
  statistical reports sent from ATS providers.
• It includes statistical data of
• - Delay time for Round Trips
• - Delay time for Downlinks
• - Number of lost messages
• - Unavailability of systems
• - Connection success and failure

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CPDLC System Performance
CPDLC Downlink 95 99 Percentile, 9/2002 8/2003
Trip Time (hmmss)
No. of MSG
95Percentile
35000
99Percentile
30000
25000
20000
15000
10000
5000
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CPDLC System Performance
CPDLC Uplink 95 99 Percentile, 9/2002
8/2003
Trip Time (hmmss)
No. of MSG
95Percentile
18000
99Percentile
16000
14000
12000
10000
8000
6000
4000
2000
0
Jan.
Feb.
Mar.
Apr.
May.
Jun.
Jul.
Aug.
2002
2003
2003
2003
2003
2003
2003
2003
2003
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ADS System Performance
ADS Uplink Message Success Rate 9/2002 8/2003
Number of Uplink Messages / Month
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Website
3. Activities of CRA

• Web-site is available for any participants who
  sign the confidentiality agreement.
• CRA provides lessons learned experienced by
  other pilots and controllers on CPDLC/ADS
  operation.
• It includes useful information for pilots
  controllers and system engineers.

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Address of JCABs CRA
3. Activities of CRA

• Please send your Problem Report to
• crasa_at_cra-japan.org
• For Website
• http//www.crasa.cra-japan.org
• But to be accessible to Problem Reports or
  Performance data, you are requested to sign
  Confidentiality Agreement

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ATS Datalink Monitoring Structure and PRs PSRs
Process
ICAO RASMAG ? APANPIRG
Stakeholders

• Civil Aviation Authority / ATS Provider
• System Monitoring Establishment of Standards
• Datalink Based ATC A/C Operation Procedures
• Development of Datalink Operational Procedures
• Report to FIT

CAA ATS
CAA
ATS Provider
Report
ATC Unit
Central Reporting Agency
PR Processing/PSR Production and
Analysis Database Management
Performance Monitoring
? ? Data Analysis
Register in Database ?
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De-identification
? Analysis of Findings ? Follow
up Creation of
? New PR Resolution

? Investigation
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ATS Unit/Aircraft Operator/DSP/ATC
Systems/Avionics
?
Other CRAs
Controller
Aircraft Operator
PR Report
PSR Report
Exchange of Data Cooperate
Pilot
Web-site
Data Collection
Aircraft Manufacturer
ATC System Manufacturer
Datalink Service Provider(DSP)
Receipt of PR
De-identification