This section describes the use cases related the eFPL usage by ANSPs.

Status

WORK IN PROGRESS - content should not be used

Full table of contents

Use of eFPL for Visualisation

General Description

Several items of the eFPL can be displayed to various actors in an ACC for enhancing their situational awareness and satisfying additional information needs.

Use of the eFPL data as an analysis tool – for learning purposes and training
Visualisation of eFPL data as a Fall back mechanism, should the system encounter failure
Visualisation of eFPL data enabling to perform ATC even when radar contact has been lost (Lack of contact with AU, procedural separation mechanisms)

Relevant eFPL content

These items include:

Agreed 4D Trajectory
Unconstrained Trajectory

To be clarified: is this the desired trajectory captured in the filed eFPL, or the performance profile, which a zero-wind, standard atmosphere profile reflective of the flight capabilities and desired parameters.

Trajectory Change Points (TCP)
FPL2012 Field 15

Actors

Flight Data Assistant
Flow Manager
Supervisor
Coordination Controller
Executive Controller

Use of eFPL for Flow Management (Traffic Complexity Tools)

General Description

The information of the eFPL can be used in Flow- and Complexity Tools in order to improve the quality of the respective forecasts and the related planning for sector configurations and staff allocation.

Quote from ICAO FF-ICE Guidance Material, Section “Implementation Strategy”
By taking the first step of accepting FF-ICE flight plans through the filing service, ASPs would gain access to more detailed trajectory information. This would be useful for strategic traffic flow management purposes, at the same time allowing ASPs to explore/develop other capabilities made possible by the additional trajectory information. ASPs will be able to gain experience in using the trajectory information and hence better build up their system capabilities for information processing, ……

Relevant eFPL content

Take-off Mass ( Would be used in EFD)
Performance data: performance profile, speed schedule ( Would be used in EFD)
Agreed 4D Trajectory
Trajectory Change Points (TCP)
FPL2012 Field 15

Actors

Flow Manager
Supervisor

Use of eFPL data in Core ATC system (FDPS)

General Description

The information of the eFPL can be used in various components of the core ATS-System, where flight plan information is used and needed. The mainly affected component would be the Flight Data Processing System (FDPS), but also other components could benefit directly or indirectly from eFPL information, e.g. Arrival Management Systems and Conflict Detection Tools

Relevant eFPL content

Take-off Mass:
- Displaying the take-off mass to the ATCO with an indication whether this is considered heavy for such A/C type could give an indication on whether some ROCD can be made or not, without the ATCO having to ask, thus saving frequency time.
  - As an example, A320 is categorised as ”medium” but could be an actual ”heavy”
- as input to the local trajectory computation
Performance data:
- Performance profile
- Speed schedule
Agreed 4D Trajectory
Trajectory Change Points (TCP)
- In today's operations, ANSP systems commonly ignore, or make assumptions on, level constraints and “clip them out”. This operationally leads to (1) clearances instructed by the ATCO (e.g. instructs FL350, while the clipped out level was FL300) and (2) sometimes intruders to our next partner. Especially if we know levels because of regulations, situation (2) would no longer occur. The information about the reason why a level constraint is present in the trajectory (for instance, PTR or regulation) will help avoid (2)
FPL2012 Field 15

Actors

Supervisor
Coordination Controller
Executive Controller

Use of the distributed eFPL by an ANSP

The data contained in the eFPL can be used by an ANSP in different ways:

ATC related

Several items of an eFPL can be displayed to various actors in an ACC (Flight Data Assistant, Flow Manager, Supervisor, Coordination Controller, Executive Controller) for enhancing their situational awareness and satisfying additional information needs. For instance:
- Use of the eFPL data as an analysis tool – for learning purposes and training
- Visualisation of eFPL data as a Fall back mechanism, should the system encounter failure
- Visualisation of eFPL data enabling to perform ATC even when radar contact has been lost (Lack of contact with AU, procedural separation mechanisms)
The eFPL can be used in various components of the core ATS-System, where flight plan information is used and needed. The mainly affected component would be the Flight Data Processing System (FDPS), but also other components could benefit directly or indirectly from eFPL information, e.g. Arrival Management Systems and Conflict Detection Tools.

ATFM related

The information of the eFPL can be used in Flow- and Complexity Tools in order to improve the quality of the respective forecasts and the related planning for sector configurations and staff allocation, as acknowledged in the ICAO FF-ICE Implementation Guidance Manual, Section “Implementation Strategy”
- By taking the first step of accepting FF-ICE flight plans through the filing service, ASPs would gain access to more detailed trajectory information. This would be useful for strategic traffic flow management purposes, at the same time allowing ASPs to explore/develop other capabilities made possible by the additional trajectory information. ASPs will be able to gain experience in using the trajectory information and hence better build up their system capabilities for information processing, …

The following table provides

Overview

Data Category	Data Item	Trajectory Computation	Visualisation	Flow-and Complexity Tools
Content of the distributed eFPL		Use Cases
Content of the distributed eFPL		ATC related		ATFM related
Flight Identification	GUFI
Flight Identification	Aircraft Identification
Flight Status	Operator Flight Plan Version
	Revalidation Status
	Revalidation Status Explanation
Flight Characteristics	Flight Rules
	Type of Flight
	Special Handling
	Flight Plan Originator
	Remarks
	Operator
	Equipment and Capabilities
	Supplementary Information Source
	Required Runway Visual Range
Aircraft Characteristics	Total number of aircraft
	Registration
	Aircraft Address
	SELCAL Code
	Mode A Code
	Number and type of aircraft
	Wake Turbulence Category
	Aircraft Approach Category
Departure/Destination Data	Departure Aerodrome
	Destination Aerodrome
	Estimated Off-Block Time
	Departure Airport Slot Identification
	Destination Airport Slot Identification
	Departure Runway
	Destination Runway
Alternates	Alternate Destination Aerodrome(s)
	Alternate Take-Off Aerodrome(s)
	Alternate En-Route Aerodrome(s)
Desired Route/Trajectory
Agreed Route/Trajectory			Display of the Agreed Route/Trajectory to the ATCO when radar contact has been lost
Route/Traj. Group	Aircraft Take-off Mass	Processing of the Aircraft Take-off Mass by the FDPS	Display of the Aircraft Take-off Mass to the ATCO
	Requested Cruising Speed
	Requested Cruising Level
	Total Estimated Elapsed Time
	General Flight Constraint
Route/Traj. Element
	Along Route Distance
	Route Element Start Point
	Route to Next Element
	Modified Route Indicator
	Route Truncation Indicator
	Requested Change
	Route/Trajectory Constraints
	Trajectory Point
	Geo Position
	Time
	Predicted Airspeed
	Predicted Ground Speed
	Wind Vector
	Assumed Altimeter Setting
	Temperature
	Trajectory Point Property
	Weight at 4D Point
	Planned Delay
Route/Traj. Aircraft Performance	Performance Profile	Processing of the Performance Profile by the FDPS
Route/Traj. Aircraft Performance	Speed Schedule	Processing of the Speed Schedule by the FDPS
Route to Revised Destination	Revised Destination
Route to Revised Destination	Route String to Revised Destination
Dangerous Goods	Dangerous Goods Information
AIRAC	AIRAC Reference
Supplementary Information	Fuel Endurance
	Persons on Board
	Emergency Radio
	Survival Capability
	Life Jacket Characteristics
	Aircraft Colour and Markings
	Pilot in Command
	Dinghies
	Remarks
Other European Items	Route Text
	Ifps Identifier
	Stay Information
	AO What-If ReRoute Indicator
	Replacement Flight Plan Indicator

Use cases descriptions

Processing of the Aircraft Take-off Mass for trajectory computation

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Name	Processing of the Aircraft Take-off Mass by the FDPS
Actors	Main: ANSP FDPS Other: NM Publication Service
Preconditions	the NM Publication Service is consumed by the ANSP the Take-Off Mass is provided by the AU in the filed eFPL the Take-Off Mass provided in the filed eFPL is shared by NM in the distributed eFPL
Trigger	A distributed eFPL containing a Take-Off Mass is received by the ANSP.
Description	A take-off mass is received. It is used by the FDPS as a replacement of the current parameter (e.g. as a replacement of a static adapted BADA parameter).
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Display of the Aircraft Take-off Mass to the ATCO

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Name	Display of the Aircraft Take-off Mass to the ATCO
Actors	Main: ATCO, ANSP Other: NM Publication Service
Preconditions	the NM Publication Service is consumed by the ANSP the Take-Off Mass and the Type of Aircraft are provided by the AU in the filed eFPL the Take-Off Mass and the Type of Aircraft provided in the filed eFPL are shared by NM in the distributed eFPL
Trigger	A distributed eFPL containing a Take-Off Mass and the Type of Aircraft is received by the ANSP.
Description	A Take-Off Mass and a Type of Aircraft are received. The Take-Off Mass is displayed to the ATCO with an indication whether this is considered heavy for such an Type of Aircraft or not. The ATCO can use this information to directly evaluate whether some rate of climb/descent can be made or not, without having to ask, thus saving frequency time.
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Processing of the Performance Profile by the FDPS

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Name	Processing of the Performance Profile by the FDPS
Actors	Main: ANSP FDPS Other: NM Publication Service
Preconditions	the NM Publication Service is consumed by the ANSP the Performance Profile is provided by the AU in the filed eFPL the Performance Profile provided in the filed eFPL is shared by NM in the distributed eFPL the Performance Profile provided in the distributed eFPL is received by the ANSP
Trigger	A distributed eFPL contaning a Performance Profile is received by the ANSP.
Description	A performance profile is received. It is composed of a climb profile and a descent profile, both expressed as a sequence of profile points each containing: distance, time duration, flight level or altitude, and optionally the true airspeed. Upon receipt, the climb and descent profiles are compared with the relevant departure and arrival portions of the FDPS local trajectory assuming zero-wind, standard atmosphere and no constraint. This comparison produces correction factors (in distance, time, level, speed...) that can be subsequently applied by the FDPS during the trajectory computation, as appropriate.
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Processing of the Speed Schedule by the FDPS

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Name	Processing of the Speed Schedule by the FDPS
Actors	Main: ANSP FDPS Other: NM Publication Service
Preconditions	the NM Publication Service is consumed by the ANSP the Speed Schedule is provided by the AU in the filed eFPL the Speed Schedule provided in the filed eFPL is shared by NM in the distributed eFPL
Trigger	A distributed eFPL containing a Speed Schedule is received by the ANSP.
Description	TODO
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Display of the Agreed Route/Trajectory to the ATCO when radar contact has been lost

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Name	Display of the Agreed Route/Trajectory to the ATCO when radar contact has been lost
Actors	Main: ATCO, ANSP Other: NM Publication Service
Preconditions	the NM Publication Service is consumed by the ANSP the Agreed Route/Trajectory is shared by NM in the distributed eFPL The distributed eFPL containing an Agreed Route/Trajectory is received by the ANSP
Trigger	Radar contact is lost with the flight
Description	The agreed route/trajectory is displayed to the ATCO when radar contact is lost. This enables the ATCO to keep performing ATC and apply the appropriate procedural separation mechanisms.
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