2. NextGen

3. Current System Primary Radar – Creates blip on Radar Screen Secondary Radar – Aircraft encodes identifier and telemetry data VHF Radio – Voice Communications Surveillance Radar ATC Radar Screen ATCO

4. Goals Remain the Sameqwqq[[[ Aviate Navigate Separate

5. NextGen: Using 21 st Century Technology to: Increase Capacity – Increasing Airport/Airspace Capacity – Reducing complexity for Air Traffic Controllers Simplify Communication Reduce Maintenance Costs Improve Environmental Impact Maintain or Improve Traditional Safety Standards

6. Increase Capacity: Build Build More Runways: reduce bottleneck for takeoffs and landings Open up additional Airspace

7. Increase Capacity: Utilization Reduce Distance between following Aircraft – Use Required Navigation Precision (RNP) – Automatic- Dependent Surveillance –Broadcast to provide ATC exact aircraft location – Cockpit Display of Traffic (CDTI) – Digital Communications Reduce Distance for Aircraft on Parallel tracks – Use Required Navigation Precision (RNP) – Automatic- Dependent Surveillance –Broadcast to provide ATC exact aircraft location – Digital Communications

8. Increase Capacity: Coordination Eliminate unused slots by coordinating flow – Spacing and merging – Super dense operations – Utilize digital communications

9. Increase Capacity: Reduce ATC Complexity More Accurate Aircraft Location – Use Relative Position Indicator (RPI) to merge arrival flows, sequence and space aircraft – Automated Terminal Proximity Alert (ATPA) to help monitor final approach – Converging Runway Display Aid (CRDA) uses visual runway spacing cues on converging runways to aid in spacing – ADS-B – Reduces uncertainty Digital Communications – Reduces uncertainty or need to re-transmit – Reduces Routing information errors

10. Reduce Maintenance Costs Radar network spread across the continent – Maintenance of actual radar – Build/maintain roads to remote locations – Build/maintain facilities in remote locations – Aging Infrastructure

11. Improve Environmental Impact Use of 4-D to make orchestration more optimal Efficiently moving traffic reduces – Noise – Fuel burn Flying at higher altitudes – Reduces fuel burn and pollution

12. Challenges Technology Cycle – How do we integrate a system of systems that is constantly changing Who incurs the cost and when? – Needed capability – managing new and old system – Incremental capability – start easy and move on