Title: DFIS - Addition of Extensibility Markers

PDR Reference:              		M1030002
Originator Reference:            	
SARPs Document Reference:         	DFIS, Section 2.4.4.3 
Status:                       	ADOPTED
Impact:					A (FIS)
PDR Revision Date:              	30/01/02 (RESOLVED -> ADOPTED)
						05/03/01 (ACCEPTED -> RESOLVED)
						01/03/01 (SUBMITTED -> ACCEPTED)
PDR Submission Date:           	01/03/01 (SUBMITTED)
Submitting State/Organization:    	ATNP/WGA
Submitting Author Name:          	Picard, F 
Submitting Author E-mail Address:  	picard_frederic@stna.dgac.fr
Submitting Author Supplemental 
Contact Information:               	tel. +33.5.62.14.55.33
						fax. +33.5.62.14.54.01
SARPs Date:                      	Doc 9705 Ed 2
						Doc 9705 Draft Ed 3
SARPs Language:                  	English

Summary of Defect:

The ASN.1 extensibility marker should be added to most of the CHOICE, SEQUENCE and ENUMERATED ASN.1 types of the Version 2 DFIS ASN.1 This is to provide more flexibility for when the description of the D-ATIS and D-METAR will be changed by the OPLINKP and METLINKSG. The size constraints of the SEQ OF types should also be extensible.   

This change is applicable to the version 1 ASN.1 through PDR M1030001 "version 1 retrofit".

Assigned SME:                    	Sub-Volume II SME

Proposed SARPs amendment: 

Add an extensibility marker to the following fields:

CHOICE: FISAcceptData, SurfaceConditionBrakingActions.description, RunwayLength, DepositDepth, FrictionMeasurements, TransitionLevel, SurfaceWD, WindSpeedDirection.direction, WindSpeed.value, VIS, VisibilityStatuteMiles, RunwayVR, RunwayVisualRange, Cloud, CloudHeight, VerticalVisibility, PressureMeasure, SupplementaryInformation, PhenomenonLocation, CeilingAndVisibility.cavnok, PeriodOfChange, WeatherPhenomenon, METARSurfaceWind.direction, METARSuppInfo.windShear, ExtendedRunwayDesignator, RunwayDepositDepth, FrictionCoefficient.

ENUMERATED: ContractType, ArrivalDepartureIndicator, ApproachProcedure, TakeOffLandingIndicator, IfrVfrIndicator, RunwaySectionId, RASCondition, Deposits, DepositAttribute, BAEquipmentUsed.equipementId, BAEstimate, RVRQualifier, IntensityQualifier, WeatherQualifier, WeatherType, CloudAmount, CloudType, CloudQualifier, SignificantMetPhenomena, ChangeIndicator, METARReportType, METARRVRPastTendency, ContaminationExtent.

SEQUENCE: ATISRequest, ATISReport, ATISReport.ceilingAndVisibility.cavnok, ApproachType.approachType,InstrumentApproachProcedure.approachProcedure, InstrumentApproachProcedure, RunwayId, RunwayLetter, RunwayInUse, ArrestingSystem, SurfaceConditionBrakingActions, ConditionsAndActions, RunwayDeposits, FrictionMeasurements.coefficientByThird, BAEquipmentUsed, ATISSurfaceWind, WindSpeedDirection, RVRValue, PresentWeather, CloudLayer, SkyObscured, CloudHeightOfBase, AltimeterSetting, RunwayQFE, SupplementaryInformation.suppInfo.mETPhenomena, RecentWeather, TrendForecastInformation.info, WeatherPhenomenon.phenomenon, Wind, METARRequest, METARReport.ceilingAndVisibility.cavnok, METARSurfaceWind, METARVisibility, METARVisibilityMeasure, METARRunwayVR, METARSuppInfo, SeaInfo, RunwayStateGroup.

SEQ OF SIZE: InstrumentApproachProcedure.approachProcedure, ATISRunways, ATISArrestingSystem, ATISVisibility, ATISRVR, ATISPresentWeather, ATISCloud, AltimeterSetting.qFE, SupplementaryInformation, RecentWeather.type, TrendForecastInformation.info, WeatherPhenomenon.phenomenon.weatherType, METARRVR, METARPresentWeather.

Impact on interoperability: 		

PDR Validation Status:			ASN.1 compilation using an independant tool.

SME Recommendation to CCB: 		-

CCB Decision:                    	SGA2/02 (Honolulu): SUBMITTED (28/02/01)
						CCB-13/1 (Honolulu): RESOLVED (05/03/01)