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The Professional Aspects of Mixed Mode for Runway Operations.
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Transcript of The Professional Aspects of Mixed Mode for Runway Operations.
![Page 1: The Professional Aspects of Mixed Mode for Runway Operations.](https://reader038.fdocuments.in/reader038/viewer/2022102908/56649e405503460f94b3164a/html5/thumbnails/1.jpg)
The Professional Aspects of Mixed Mode for Runway Operations
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Mixed Mode
• IFATCA: Mixed mode operations are IFATCA: Mixed mode operations are defined as ATM Operations that require defined as ATM Operations that require different procedures due to variances different procedures due to variances in airspace users characteristics and/or in airspace users characteristics and/or ATM design within the same area of ATM design within the same area of controller responsibility.controller responsibility.
• Context of the paper. The mixing of Context of the paper. The mixing of arrivals and departures on the same arrivals and departures on the same runway at multiple runway airfields.runway at multiple runway airfields.
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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?
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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
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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
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RWY 25L
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Terrain to the South
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Terrain to the SE
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Guangzhou Airport (New)
Shenzhen Airport
Airspace Management
Pearl River Delta Area Airports and Airspace
Macao Airport
Zhuhai Airport
Zhuhai Airspace
Guangzhou Airspace
35NM
Hong Kong Airspace
Airspace Management
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Tracks 3, 4, 5 & 6
Departure Tracks for HK Airport at CLK
To TUNNA
SMTVOR
To BREAM
TDVOR
a
Terrain above 600 feet Terrain above 1000 feet
Terrain & Departure Flight Paths
Terrain & Departure Paths-1
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Zhuhai Airspace
New Baiyun
30NMHK Airspace
Guangzhou Airspace
Airspace Management
Airspace Management O/Head
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RWY 07 DEPRWY 07 DEP
MELON
MANGO
TD
RWY 07 DEP
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RWY 07 APPRWY 07 APP
MELON
MANGO
TD
RWY 07 APP
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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?
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Tracks 3, 4, 5 & 6
Departure Tracks for HK Airport at CLK
To TUNNA
SMTVOR
To BREAM
TDVOR
a
Terrain above 600 feet Terrain above 1000 feet
Terrain & Departure Flight Paths
Terrain & Departure Paths-1
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Airfield layout is a predictor
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Crossing runways already achieve high movement
rates
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Landings closely followed by departures
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Considerations
• Safety:- Segregated mode
• Reduction in Separation
• Wake turbulence category
• Weather conditions
• Human Factors
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Wake turbulence
• SM…….. Time loss • MM…….. Vortex infringement
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Weather
• Windshear• Turbulence• Downdrafts• Crosswind • CB’s that may
increase track deviations on the ILS/MLS approaches
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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
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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
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Some things just
should not be
considered
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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
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Draft recommendation that the paper be accepted as information.
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Any Questions?