ADSB: Operational Evaluation OpEval

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ADS-BOperational Evaluation (OpEval)

• Captain Bob Hilb UPS
  Airlines/Cargo Airline Association
• May 9, 2000

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Agenda

• OpEval 1
• OpEval 1 Final Report
• Fleet Wide Certification
• OpEval 2
• Cost Benefit

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ADS-B OpEval

• July 1999 - Operational Evaluation Wilmington,
  Ohio
• Demonstration of air-air capabilities
• pilots maintained precise spacing in traffic
  pattern
• planned 95 approaches - completed 217
• Very positive results

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OpEval Final Report

• PHASE I OPERATIONAL EVALUATION
• FINAL REPORT
• CARGO AIRLINE ASSOCIATION (CAA)
• FAA SAFE FLIGHT 21 PROGRAM
• APRIL 10, 2000
• PREPARED BY
• OPERATIONAL EVALUATION COORDINATION GROUP (OCG)
• ADS-B.COM

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Flight crew perception of CDTI Summary

• Crews were mixed on the use of the CDTI system as
  an aid to surface awareness
• Crews agreed that the CDTI was an aid during
  departure and en route flights
• Crews agreed that the CDTI was an aid to station
  keeping during in-trail or lead climbs and
  descents
• Crews agreed that the CDTI was very useful as an
  aid to visual acquisition during IMC and VMC, and
  that it assisted spacing during visual approaches
• Crews found the workload acceptable, although
  there appears to be some evidence of distraction,
  and issues related to head-down time, which may
  be due to unfamiliarity with the CDTI

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Controller Perceptions of CDTISummary

• Positive effects on aircrew capabilities,
  controllers ability to maintain safe and
  efficient traffic flow, and providing control
  information
• Positive effect on sequencing, issued less
  spacing info. (1 of 4 positive comments)
• Aircraft cleared to follow on downwind turned
  earlier and followed closer
• Concerns about increased pilot requests, aircraft
  following too close, call sign confusion, and
  pilots following traffic only seen on CDTI
• Concern over pilots use of info on CDTI to
  initiate requests for sequencing or to question
  controller intentions thus increasing controller
  workload and interfering with control operations
  (All 3 controllers made this comment)

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Fleet Wide Certification

• Improvements from OpEval 1
• Enhanced See and Avoid
• Conflict Situational Awareness
• August 00

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OpEval 2

• Louisville
• Last week in October 00
• Applications
• Final Approach Spacing
• Departure Spacing
• Runway and Final Approach Occupancy Awareness
• Enhanced Surface Situational Awareness
• ADS-B Enhancement of Terminal Radar

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Benefits

• 3 Programs
• SDF Study (GMU)
• C/AFT
• Safe Flight 21 Cost Benefit Team

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Histogram of Aircraft Inter-Arrival data
showing estimate of the Probability Density
Function versus the desired Wake-Vortex
separation time
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Conclusions

• ADS-B ready for operational deployment
• Combined with Capstone work a solution for high
  and low altitude Gulf Airspace
• Only solution that combines air-to-air and air-to
  ground safety and operational benefits