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Definition

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Data item

Description

AIXM mapping

airport designator

The published designator of the airport where the taxiway is located, used in combination with other elements in order to identify the taxiway(s) and/or taxiway portion(s) concerned.

AirportHeliport.designator

airport name

The published name of the airport where the taxiway is located, used in order to identify the taxiway(s) and/or taxiway portion(s) concerned.

AirportHeliport.name

taxiway designator

The published designator of the taxiway concerned. This information is used in combination with the airport designator/name in order to identify the affected  taxiway(s) and/or taxiway portion(s)

Taxiway.designator

closed taxiway description

In case of a partial closure, a textual description of that taxiway portion concerned should be provided

Taxiway.availability.ManoeuvringAreaAvailability.annotation (see ER-03)

closed taxiway element

In case of both a partial and a total closure, the exact geometry of the closed taxiway portion should be precisely identified by specifying the concerned taxiway elements

  1. The application shall allow graphical display and selection of taxiway(s) and/or taxiway portion(s) to be closed;

  2. The HMI application should support the operator in identifying all relevant taxiways, taxiways portions and other elements that are affected by the closure and have an impact on operations. As general rules, if an intersection has to be closed, the Taxiways and/or TaxiwayElements linked to this intersection shall also be closed up to the intersection. The application shall support the operator in avoiding cul-de-sac/dead-end situations and warn on situations when other Taxiways and/or TaxiwayElements are leading to nowhere. The application shall suggest to either include them in the NOTAM or generate a new NOTAM, as appropriate. 

  3. The operator shall be the one manually selecting all the portions to be closed. 

TaxiwayElement(s) identified as explained in the Data Encoding Rule ER-01. 


status=CLOSEDThe operational status of the taxiway. In this scenario, it is only possible to indicate a complete closure.Taxiway.availability.ManoeuvringAreaAvailability.operationalStatus and TaxiwayElement.availability.ManoeuvringAreaAvailability.operationalStatus

closure reason

The reason for the taxiway(s) and/or taxiway portion(s) closure.

Taxiway.availability.ManoeuvringAreaAvailability.annotation with propertyName='operationalStatus' and purpose='REMARK'.

Note that the property "warning" of the ManoeuvringAreaAvailability class is not used here because it represents a reason for caution when allowed to operate on the taxiway, not a reason for a closure.

start time

The effective date & time when the taxiway closure starts. This might be further detailed in a "schedule".

Taxiway/TaxiwayTimeSlice/TimePeriod.beginPosition, TaxiwayElement/TaxiwayElementTimeSlice/TimePeriod.beginPosition, Event/EventTimeSlice.validTime/beginPosition and Event/EventTimeSlice.featureLifetime/beginPosition

end time

The end date & time when the taxiway closure ends.

Taxiway/TaxiwayTimeSlice/TimePeriod.endPosition, TaxiwayElement/TaxiwayTimeSlice/TimePeriod.endPosition, 
Event/EventTimeSlice.validTime/endPosition and Event/EventTimeSlice.featureLifetime/endPosition also applying the rules for Events with estimated end time

schedule

A schedule might be provided, in case the taxiway is effectively closed according to a regular timetable, within the overall closure period.

Taxiway.availability.ManoeuvringAreaAvailability/Timesheet/... and TaxiwayElement.availability.ManoeuvringAreaAvailability/Timesheet/...according to the rules for Schedules

note

A free text note that provides further details concerning the taxiway closure.

Taxiway.availability.ManoeuvringAreaAvailability.annotation with purpose='REMARK'

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  1. the information about each Taxiway concerned already exists in the form of a Taxiway BASELINE TimeSlice, which contains as a minimum:
    1. designator,

    2. type (ex: EXIT, FASTEXIT, etc), and

    3. association with the AirportHeliport;

  2. If taxiway portions are concerned, it is assumed that they are encoded in BASELINE TaxiwayElements, including their horizontal extent (geometry) to enable graphical selection. 
  3. It is assumed that the following principle has been followed for the encoding of BASELINE Taxiway.availability and TaxiwayElement.availability data (as available in the BASELINE data):
    1. the operationalStatus has the value 'NORMAL' (meaning that the facility operates with nominal parameters) for all Taxiway.availability and/or TaxiwayElement.availability that are part of the BASELINE data; 

Data encoding rules

The data encoding rules provided in this section shall be followed in order to ensure the harmonisation of the digital encodings provided by different sources. The compliance with some of these encoding rules can be checked with automatic data validation rules. When this is the case, the number of the encoding rule is mentioned in the data validation rule.

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