1. The Professional Aspects of Mixed Mode for Runway Operations

2. Mixed Mode IFATCA: Mixed mode operations are defined as ATM Operations that require different procedures due to variances in airspace users characteristics and/or ATM design within the same area of controller responsibility.IFATCA: Mixed mode operations are defined as ATM Operations that require different procedures due to variances in airspace users characteristics and/or ATM design within the same area of controller responsibility. Context of the paper. The mixing of arrivals and departures on the same runway at multiple runway airfields.Context of the paper. The mixing of arrivals and departures on the same runway at multiple runway airfields.

3. Why? Movement rates at single runway airfields comparatively exceed those with multiple runways using SM MM has the potential to exceed SM in movement rates Is it case specific?

4. Greenfield No significant terrain No noise sensitive areas (residential prop) No other airports in proximity Runway layout and spacing supports simultaneous operations Benign weather conditions

5. Green field Vs Reality Terrain:- impact on missed approaches Weather Airspace:-proximity of other airfields and approach and arrival paths Airfield:- physical dimensions Noise sensitivity with population Ability of ATM to absorb an increase

6. RWY 25L

7. Terrain to the South

8. Terrain to the SE

9. Guangzhou Airport (New) Shenzhen Airport Airspace Management Pearl River Delta Area Airports and Airspace Macao Airport Hong Kong Airport Zhuhai Airport Zhuhai Airspace Guangzhou Airspace 35NM Hong Kong Airspace Airspace Management

10. a Terrain above 600 feet Terrain above 1000 feet Terrain & Departure Flight Paths Terrain & Departure Paths-1

11. Zhuhai Airspace New Baiyun 30 NM HK Airspace Guangzhou Airspace Airspace Management Airspace Management O/Head

12. RWY 07 DEP MELON MANGO TDTD RWY 07 DEP

13. RWY 07 APP MELON MANGO TDTD RWY 07 APP

14. Airfield/equipment limitations Can simultaneous/independent operations be conducted? (ICAO requirements) Separation of missed approach and departure paths during MM Will terrain permit clearing of a ‘non plundering’ aircraft with simultaneous MM arrivals? Equipment…………………………………PRM?

15. a Terrain above 600 feet Terrain above 1000 feet Terrain & Departure Flight Paths Terrain & Departure Paths-1

16. Airfield layout is a predictor

17. Crossing runways already achieve high movement rates

18. Landings closely followed by departures

19. Considerations Safety:- Segregated mode Reduction in Separation Wake turbulence category Weather conditions Human Factors

20. Wake turbulence SM…….. Time loss MM…….. Vortex infringement

21. Weather Windshear Turbulence Downdrafts Crosswind CB’s that may increase track deviations on the ILS/MLS approaches

22. Human Factors Landings and take-offs are statistically the most hazardous phase of flight Combining arrivals and departures removes the inherent safety of SM MM increases risk & workload and has the potential to degrade predictability

23. Variables Actual gain vs. theoretical gain Traffic in the ILS sensitive area Sidestep and missed approach procedure Complex flow control with an unpredictable acceptance rate

24. Some things just should not be considered

25. Recommendations Airspace/Terrain Limitations Physical dimensions permitting independent parallel approaches Human Factors resulting from procedural changes Procedures in the event of adverse weather Noise implications accompanying a change Reduction in separation Ability of the system to absorb an increase of traffic both ground and airborne Missed approach procedures in the event of a late assignment of runway change

26. Draft recommendation that the paper be accepted as information.

27. Any Questions?