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Definition

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  • AirportHeliport BASELINE as specified in the Basic Data for Airport/Heliport,

  • Runway BASELINE according to the coding rules for Basic Data for Runway;

  • Taxiway BASELINE which contains as a minimum a designator and an association with the AirportHeliport; (warning)No AIP Data Set coding rules identified.

  • Apron BASELINE which contains as a minimum a designator and an association with the AirportHeliport; (warning)No AIP Data Set coding rules identified.

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Identifier

Data encoding rule

ER-01

The surface condition report shall be encoded as:

  • a new Event with a BASELINE TimeSlice (encoding=”DIGITAL”, scenario=”SFC.CON”, version=”2.0”), for which a PERMDELTA TimeSlice may also be provided; and

  • a TimeSlice of type TEMPDELTA for each affected Runway feature, for which the "event:theEvent" property points to the Event instance created above.

  • if applicable, additional TEMPDELTA TimeSlices for the affected Taxiway and/or Apron features as detailed below. Such TimeSlice shall have the "event:theEvent" property points to the Event instance created above.
ER-02

The TimeSlice.validTime of the affected Features TEMPDELTAs, the EventTimeSlice.validTime and EventTimeSlice.featureLifetime shall have TimePeriod.beginPosition equal to the latest Runway.RunwayContamination.observationTime.

Reason: When reporting on more than one runway and individual dates/times of observation/assessment are indicated by repeated Item B, the latest date/time of observation/assessment is inserted in the abbreviated heading. This is considered the start of the SNOWTAM validity.

ER-03

The TimeSlice.validTime of the affected Features TEMPDELTAs, the EventTimeSlice.validTime and EventTimeSlice.featureLifetime shall have TimePeriod.endPosition set 8h after the TimePeriod.beginPosition.

Reason: Maximum SNOWTAM validity is 8h.

ER-04

Only the following values shall be used for the RunwaySectionContamination.section:

  • 1_THIRD
  • 2_THIRD
  • 3_THIRD
ER-05

Only the following values are allowed for Runway.RunwaySectionContamination.frictionEstimation:

  • OTHER:RWYCC_0
  • OTHER:RWYCC_1
  • OTHER:RWYCC_2
  • OTHER:RWYCC_3
  • OTHER:RWYCC_4
  • OTHER:RWYCC_5
  • OTHER:RWYCC_6
ER-06

Only the following values shall be used for RunwaySectionContamination.SurfaceContaminationLayer.type:

  • COMPACT_SNOW
  • DRY_SNOW
  • FROST
  • ICE
  • SLUSH
  • OTHER:DRY

  • OTHER:STANDING_WATER
  • OTHER:WET
  • OTHER:WET_ICE
  • WET_SNOW
ER-07

Only the following values shall be used for Runway.overallContaminant.SurfaceContaminationLayer.type:

  • OTHER:DRIFTING_SNOW
  • OTHER:LOOSE_SAND
  • OTHER:CHEMICAL_TREATMENT
ER-08If presence of snow banks adjacent to the runway are indicated, this shall be encoded as RunwayContamination.Ridge.annotation having purpose="REMARK" and note="Snow banks present adjacent to the runway".
ER-09If the assessment is including Taxiway information, TEMPDELTA TimeSlices shall be encoded for each affected Taxiway feature. This shall include Taxiway.SurfaceCharacteristics.surfaceCondition and TaxiwayContamination.Ridge, as available.
ER-10If presence of snow banks on the taxiway are indicated, this shall be encoded as TaxiwayContamination.Ridge.annotation having purpose="REMARK" and note="Snow banks present on the taxiway"
ER-11If the assessment is including Apron information, TEMPDELTA TimeSlices shall be encoded for each affected Apron feature. This shall include the Apron.SurfaceCharacteristics.surfaceCondition.
ER-12

Only the following values shall be used for Runway.RunwayContamination.frictionDevice:

  • GRT
  • MUM
  • RDB
  • RFT
  • SFH
  • SFL
  • SKH
  • SKL
  • TAP
ER-13The maximum value of SurfaceContaminationLayer.layerOrder is 2.
ER-14

In case of multiple SurfaceContaminationLayer.layerOrder, only the following combinations are allowed:

  • layerOrder=1, type=DRY_SNOW and layerOrder=2, type=COMPACT_SNOW
  • layerOrder=1, type=DRY_SNOW and layerOrder=2, type=ICE
  • layerOrder=1, type=OTHER:STANDING_WATER and layerOrder=2, type=COMPACT_SNOW
  • layerOrder=1, type=WET_SNOW and layerOrder=2, type=COMPACT_SNOW
  • layerOrder=1, type=WET_SNOW and layerOrder=2, type=ICE

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