1. Why Flight Plan and ATFCM adherence?
21/04/2017
CFMU User Forum ‘09
Why Flight Plan and ATFCM adherence?
Welcome, thanks for your interest
Christian Faber: Responsible for Operational Investigation, reporting and Quality of Service
Christian Faber
Head of Investigation
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2. Traffic exceeds capacities by more than 10% = ATFCM "over delivery"
21/04/2017
The problem
Traffic exceeds capacities by more than 10% = ATFCM "over delivery"
Not flying at the requested flight level (RFL)
Arriving in the sector earlier or later than planned
Departing at times different from EOBT/CTOT
Deviating from their original planned route
Problem Statement
Too many aircraft? No
Too many aircraft at the place at the wrong time? No
Too many aircraft at a unknown place at an unexpected time!
Definition of “Over Delivery”
Not flying at the requested flight level (RFL)
Arriving in the sector earlier or later than originally planned
Departing at times different from the original estimated off block time (EOBT) or calculated take off time (CTOT)
Deviating from their original planned route (often direct routeing (DCT))
Network effect impacting SAFETY!
CFMU User Forum 2009
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3. Example 1 regulated airspace FL380 FL340 re-filed FPL
21/04/2017
Example 1
regulated airspace
FL380
FL340
re-filed FPL
“Request FL 380!”
The basic principle/example of FL non-adherence.
ADEP
ADES
distance
CFMU User Forum 2009
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4. Example 2: over delivery in Austria
21/04/2017
Example 2: over delivery in Austria
16 flights flying higher than filed
A real example on an over delivery:
LOVVWHT sector (FL ) on a day in August 2009 between
The sector could be split, only because staff were available at the time to control the situation. 53
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5. What’s the effect… Potentially excessive workload,
21/04/2017
What’s the effect…
Potentially excessive workload,
Wasted capacity in some sectors,
An overall lack of confidence in the accuracy of forecast traffic counts,
Protective capacity reduction,
Increased workload, stress or working conditions such that the ability of ATC controller may be significantly impaired and thus a safety issue.
CFMU User Forum 2009
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6. FPL route - real route 21/04/2017
Example of a adherence during one day in Europe.
CFMU User Forum 2009
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7. The network impact Actual routes FPL routes 21/04/2017
Comparing flight plan routes plotted on a map against the actual routes in central Europe
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8. Flight Plan and ATFCM adherence awareness campaign
21/04/2017
Flight Plan and ATFCM adherence awareness campaign
Three main elements of adherence
Adherence to requested FL (one of the main reason for over-deliveries)
Adherence to Flow Measures, mainly CTOT (thus arriving too early/late in the sectors)
Adherence to filed route (incomplete or incorrect ATFCM picture)
Procedures and rules exist already
Purpose of the campaign:
Increase awareness amongst aviation staff, including pilots, ATCOs and dispatchers on the network impact of non-adherence.
CFMU User Forum 2009
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9. 21/04/2017
ICAO Doc 7030/4 (EUR)
“ATC is responsible for departure slot monitoring at departure aerodromes…”
“…Aircraft operators shall inform themselves of and adhere to… current ATFM measures…”
“Any changes to the EOBT of more than 15 minutes for any IFR flight within the IFPZ shall be communicated to the IFPS”
“ATC is responsible for departure slot monitoring at departure aerodromes…”
“…Aircraft operators shall inform themselves of and adhere to… current ATFM measures (e.g. specific measures applicable on the day in question such as ATFM slot or flight suspension)”
“Any changes to the EOBT of more than 15 minutes for any IFR flight within the IFPZ shall be communicated to the IFPS”
CFMU User Forum 2009
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10. Commission regulation (EC) No 1033/2006 (1st January 2009)
21/04/2017
Commission regulation (EC) No 1033/2006 (1st January 2009)
“The operator shall ensure that the conditions of acceptance of a flight plan and any necessary changes thereto as notified by IFPS to the originator are incorporated into the planned flight operation and communicated to the pilot.”
“The operator shall ensure prior to operation of the flight that the content of the initial flight plan correctly reflects the operational intentions.”
CFMU User Forum 2009
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11. 21/04/2017
Possible reasons for non-adherence (received via ‘Support Request’ on Skybrary)
Request for support issed via Skybrary:
1. How does non-adherence of EOBT/CTOT, requested level, or change of routeings affect your operations?
2. What are the possible reasons (root causes) of non-adherence?
3. What are your recommendations or proposed solutions to improve adherence and avoid re-occurrence?”
Congestion on the ground of the airport and inefficient or unrealistic turnover process.
Underestimation of the network effects by ATC due to low traffic at own airport/sector.
Lack of trust in load figures.
Weather problems.
Lack of knowledge of the network effect.
Pressure to make up lost time.
Discrepancy between estimated and actual winds. …
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12. Recommendations (received via ‘Support Request’ on Skybrary)
21/04/2017
Recommendations (received via ‘Support Request’ on Skybrary)
Request for support issed via Skybrary:
1. How does non-adherence of EOBT/CTOT, requested level, or change of routeings affect your operations?
2. What are the possible reasons (root causes) of non-adherence?
3. What are your recommendations or proposed solutions to improve adherence and avoid re-occurrence?”
Recommendation:
Move away from RPLs, filed per season, not flexible.
Enable direct filing – route structure should be gradually re-designed.
Solve problems leading to delayed off-block, ground handling, late passenger.
Ensure update of EOBTs, inform pilot of FPL changes.
Ensure that ATC and cockpit systems display relevant ATFCM information, e.g. overloads, levels capped.
Provide or improve ATFCM training for TWR and AO personnel.
OPS Management to promote strict adherence to EOBT/CTOT and FL/route.
Change of FL should only be initiated to ensure safe separation and other reasons for the safe conduct of flight.
CFMU User Forum 2009
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13. What has been done? Publications:
21/04/2017
What has been done?
Publications:
Website*, brochures, flyers, posters, presentations, WBT (e-learning)
Promotion with international organisations and working groups:
IATA, IACA, IFATCA, IFALPA/ECA, IFALDA, ODSG, DOP
Contacted:
ANSPs, ACCs, AOs, AOs military, FPL Service Providers to AOs, Airports, Pilots (via IATA / IFALPA), Industry.
CFMU User Forum 2009 *
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14. request lower (unable)
21/04/2017
What has been done?
CTOT adherence Following countries are/were involved or have been contacted regarding CTOT adherence: EB, LK, HE, LF, LG, LH, LT, EG
OPS evaluation Maastricht and Rhein UAC operational evaluation of requested FL
Training SkyGuide include subject in ATCO refresher training (MUAC plans to do the same)
System SkyGuide system trial of identification of flights at differing RFL prior to ACC entry.
TFV
No. of FLTs
request higher
request lower
request lower (unable)
EDUFBM 78
2,56
1,28
EDU
FFMM
336
10,12
8,04
0,00
EDUFMT
489
7,16
16,36
0,20
EDUUNTM
370
5,41
16,22
EDUERLH
144
8,33
9,03
0,69
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15. From awareness to improvements
21/04/2017
From awareness to improvements
Continue awareness activities and assessments at local, regional and network levels
Continue to address adherence issues at individual airports and ACCs with ANSPs, AOs and authorities concerned
Best Practices (local initiatives, ATCO & pilot training, etc)
Trials, comparison exercises (routes filed versus flown) and simulations to show impact
Adherence Day (see next slide)
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16. Adherence Day One day operational evaluation through
21/04/2017
Adherence Day
One day operational evaluation through
‘full’ application of adherence procedures
Objectives:
Measure the effect of adherence to FPL and ATFCM measures
Determine benefits arising from accurate EOBT/CTOT & RFL with regard to sector counts (potential release of capacity)
Improve the quality of FPL with regard to routes (incl. DCT) and FLs
To be addressed:
Scope of adherence procedures to be applied
Geographical scope
Need for awareness and participation of many actors:
ANSPs, ATCO’s, AO’s, Pilots, FPSP, Authorities, …
Need for clear guidance on “rules of the game”
Address any legal aspects
Use of results:
Compare filed and real trajectory with other similar days
Show impact of (non-) adherence on network performance
Identify issues
Use as basis for further convincing of operational partners
Use as basis for further improvement actions
CFMU User Forum 2009
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17. Benefits of adherence reliable and accurate data for all involved
21/04/2017
Benefits of adherence
reliable and accurate data for all involved
improved predictability of traffic
improved network demand-capacity balancing
increased capacity
increased safety
flight efficiency
CFMU User Forum 2009
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18. Questions 21/04/2017 Enter here your Presentation Title
CFMU User Forum 2009
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