The document discusses Airport Collaborative Decision Making (A-CDM), which aims to improve efficiency and predictability at airports through information sharing and collaboration between airport partners. It outlines the key concepts of A-CDM, including milestone tracking, variable taxi time calculation, and collaborative capacity planning. Implementation of A-CDM has led to benefits like reduced taxi times, fewer delays, lower fuel consumption and emissions at several major airports. However, the document notes that broader adoption across Europe requires stronger leadership and formalized commitments from all stakeholders to fully realize the benefits of this approach.

1. February 23, 2015
e10CDM | aviation consultancy

2. February 23, 2015
A-CDM perspectives
Including Adverse Conditions
Etienne van Zuijlen
Managing Director e10CDM
©e10CDM | aviation consultancyFebruary 2015

3. March 14, 2013February 23, 2015
Introduction: Airport CDM – the concept
© e10CDM | aviation consultancy 3February 23, 2015
EUROCONTROL definition:
Airport CDM is about partners working together more
efficiently and transparently in how they work and sharing data.
Improved decisions based on more accurate and timely
information are possible with Airport CDM implementation,
resulting in all airport partners having the same operational
picture, with the same meaning to all involved.
It allows each Airport CDM Partner to optimise their
decisions in collaboration with other Airport CDM Partners,
knowing their preferences and constraints in actual and
predicted situations.

4. March 14, 2013February 23, 2015
Introduction: A-CDM “101” in 3 minutes
© e10CDM | aviation consultancy 4February 23, 2015
http://youtu.be/N38IN47wzUo

5. March 14, 2013February 23, 2015 © e10CDM | aviation consultancy 5February 23, 2015
• Initiating Partners: Airport, Air Traffic
Control, main GroundHandlers & Airlines
• Objectives:
• Improve predictability
• Improve on-time performance
• Reduce ground movements
• Optimise use of resources
• Reduce (ATFM) slot wastage
• Flexible Departure Planning
• Reduce apron/taxiway congestion
• Overall Sustainability “scoreboard”:
• Culture change for operational
staff
• Reducing costs & improving
quality for all partners
• Reduced noise, NOx & CO2
emissions at/around airport
A-CDM Implementation Objectives

6. March 14, 2013February 23, 2015 © e10CDM | aviation consultancy 6February 23, 2015
A-CDM Concept Elements
• Airport CDM Information Sharing
• Milestone Approach: CDM turn-round process
• Variable Taxi Time calculation
• Collaborative Pre-departure Sequence
• CDM in Adverse Conditions
• Collaborative Management of Flight Updates

7. March 14, 2013February 23, 2015 © e10CDM | aviation consultancy 7February 23, 2015
A-CDM Information Sharing
“The Airport CDM
Information Sharing
Element defines the
sharing of accurate and
timely information
between the Airport
CDM Partners in order
to achieve common
situational awareness
and to improve traffic
predictability.”

8. March 14, 2013February 23, 2015 © e10CDM | aviation consultancy 8February 23, 2015
Milestone Approach: A-CDM turnaround process
“The CDM Turn-round Process Element (Milestones Approach)
describes the progress of a flight from the initial planning to the
take off from a CDM Airport by defining Milestones to enable
close monitoring of significant events.”

9. March 14, 2013February 23, 2015 © e10CDM | aviation consultancy 9February 23, 2015
A-CDM Variable Taxi Time calculation
“The Variable Taxi Time
Calculation Element consists
of calculating and distributing
to the Airport CDM Partners
accurate estimates of taxi-in
and taxi-out times to improve
the estimates of in-block and
take off times. The
complexity of the calculation
may vary according to the
needs and constraints at the
CDM Airport. The aim is to
improve the traffic
predictability.”

10. March 14, 2013February 23, 2015 © e10CDM | aviation consultancy 10February 23, 2015
A-CDM Collaborative Pre-departure Sequence
“The Collaborative
Predeparture sequence is
the order that aircraft are
planned to depart from
their stands (push off
blocks) taking into
account partners’
preferences. It should not
be confused with the pre-
take off order where ATC
organise aircraft at the
holding point of a
runway.”

11. March 14, 2013February 23, 2015 © e10CDM | aviation consultancy 11February 23, 2015
A-CDM in Adverse Conditions
“The CDM in Adverse
Conditions Element
consists of a
collaborative
management of the
capacity of a CDM
Airport during periods
of a predicted or
unpredicted reduction
of capacity”.

12. March 14, 2013February 23, 2015 © e10CDM | aviation consultancy 12February 23, 2015
Collaborative Management of Flight Updates
“The Collaborative
Management of Flight
Updates Element consists of
exchanging Flight Update
Messages (FUM) and
Departure Planning
Information (DPI) messages
between the CFMU and a CDM
Airport to provide estimates
for arriving flights to CDM
Airports and improve the
ATFM slot management
process for departing flights.”

13. March 14, 2013February 23, 2015 © e10CDM | aviation consultancy 13February 23, 2015
Example: A-CDM parameters & de-icing
Responsible Partner
Parameter Airline
operator
Ground Handler
De-icing
Handler
Airport
Operator
Air
Traffic
Control
CFMU
Time Parameters
ELDT Adjust
EXIT Adjust Adjust
EIBT Adjust
MTTT Set/Adjust Adjust
TOBT Set/Adjust Set/Adjust
TSAT Optimise
ECZT Set
EEZT Set
EDIT Adjust
EXOT Adjust Adjust
TTOT Optimise
CTOT Adjust
Other Parameters
MET status Adjust

14. February 23, 2015
Example: A-CDM parameters & de-icing (1)
Acronyms
ERZT Estimated Ready for De-icing Time
ECZT Estimated Commence of De-icing Time
EEZT Estimated End of De-icing Time
EDIT Estimated De-icing Time (= EEZT – ECZT)
February 23, 2015 © e10CDM | aviation consultancy 14
TOBT
EXOT
TTOTOn Stand
EDIT
Remote TOBT
VTT EDIT VTT
TTOT

15. February 23, 2015
Example: A-CDM parameters & de-icing (2)
Acronyms
ECZT Estimated Commence of De-icing Time
EEZT Estimated End of De-icing Time
EDIT Estimated De-icing Time (= EEZT – ECZT)
DIWT De-icing Waiting Time
February 23, 2015 © e10CDM | aviation consultancy 15
TOBT
EXOT
TTOTOn Stand – case B
Remote – case B TOBT
DIWT EDIT VTT
TTOT
VTT
EDITDIWT
TSAT
TSAT

16. March 14, 2013February 23, 2015 © e10CDM | aviation consultancy 16February 23, 2015
Winter Examples: CDM Portal & Capacity Planning
MET FORECAST +7hrs
drives the Rwy &
CAP plannings
MET ACTUALS

17. March 14, 2013February 23, 2015 © e10CDM | aviation consultancy 17February 23, 2015
Winter Example: CDM Capacity Planning (1)
• 5-day ahead
winterforecast
• Risk assesment
• Sectormeetings to
estimate Airside capacity
in advance
• Coordinated recovery

18. March 14, 2013February 23, 2015 © e10CDM | aviation consultancy 18February 23, 2015
Winter Example: CDM Capacity Planning (2)
• Normal operations: 4 daily CDM capacity briefings
03.30 / 09.15 / 14.00 / 20.00 hrs
Input: Weather forecast
Availability airport infrastructure
Airspace availability
Output: Runway capacity
• Adverse winter weather operations:
From November 15 th / March 31st
5-day ahead winterforecast by Met office during 09.15 u CDM capacity briefing
CDM parties can request sectorbriefing on demand
Focus on Airside capacity
Input: Winterweather forecast
Choice winter-scenario
Runway Capacity/ Acft stand availability/De-icing
Output: Airside Capacity

19. March 14, 2013February 23, 2015 © e10CDM | aviation consultancy 19February 23, 2015
Winter Example: CDM Capacity Planning (3)
scenario’s

20. February 23, 2015
A-CDM Implementation
ATM Masterplan “baseline” But EU implementation slow..
more info: www.euro-cdm.org
• © e10CDM | aviation consultancy 20February 23, 2015

21. March 14, 2013February 23, 2015
CDM@MUC CDM@BRU CDM@CDG CDM@FRA CDM@LHR
(targets)
CDM@FCO
Taxi Time Outbound
- 10%
- 3 min. -2 min.
(- 4 Adv. Con.)
~0 min. -2 min./
-10%
-800 min/day
-2 min/flight
Fuel savings
CO2 [tonnes/yr]
NOx [tonnes/yr]
-2,65 M€
16706
21.6
- 2.7 M€
17022
22
-2.55 M€
16060
20.75
non public -10% TO-fuel
-3.1 M€
ATFM CTOT
Slot Adherence
+ 5 %
[93%]
non public
[>90%]
non public non public
[>90%]
non public
[>80%]
non public
IATA DEPARTURE
Punctuality
non public non public +5 -10 % +~7% non public non public
Late gate-change <1% non public non public - ~5% 0% IBT -20min non public
TOBT adherence
[vs ASRT+/-5min]
~50% (stable) non public non public + ~20%
(50 -> 70%)
non public non public
Network benefit -~4 min vs
avg EU-delay -10% -10%
-~10 min vs. avg
EU-delay
-~4 min vs
avg EU-delay
non public
A-CDM Benefits: real & accountable?
Sources: http://euro-cdm.org/library/eurocontrol/cdm_benefits_flyer.pdf, FRA & LHR public CDM documents & own analysis
© e10CDM | aviation consultancy 21February 23, 2015
Sources: http://euro-cdm.org/library/eurocontrol/cdm_benefits_flyer.pdf, FRA & LHR public CDM documents & own analysis

22. March 14, 2013February 23, 2015
Accelarate implementation: real partnerships
• Good intentions are there:
– ACI Europe / Eurocontrol / CANSO MoC
– Industry Efficiency Programs (initial targets)
– ATM Masterplan & Update (new: EU funding!)
– SESAR, Nextgen & ICAO ASBU alignment
• Missing key ingredients:
– thrust & drive
– collaborative leadership
© e10CDM | aviation consultancy 22February 23, 2015

23. February 23, 2015
In summary
The A-CDM Experience Key recommendations
• have common objective
• respect all partners
• be transparant
• share & learn
• formalise commitment
• no simple IT project..
• needs “doers”, not talkers
• How airports should work
A-CDM
Lessons
Learnt
Just Do It, what are you waiting for?
© e10CDM | aviation consultancy 23February 23, 2015

24. February 23, 2015
Questions & Discussion
© e10CDM | aviation consultancy 24February 23, 2015

25. February 23, 2015
e10CDM | aviation consultancy
Etienne van Zuijlen
e10CDM | aviation consultancy
Managing Director
P +31 294 779833
M +31 6 46837965
E info@e10cdm.nl
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