Name	Data Type	Definition
endConditionDesignator	CodeSegmentTerminationType	An indication of the event that allows identifying the end of the leg and the start of the next leg on the procedure. For example, reaching an altitude or outbound timing.
legPath	CodeTrajectoryType	A code defining a specific type of flight path such as arc, base turn outbound, base turn inbound, track, proc turn, hold in lieu.
legTypeARINC	CodeSegmentPathType	A comprehensive description of the 'path and terminator' concept is given in ARINC Specification 424, Attachment 5, Path and Terminator.
course	ValBearingType	The value of the course angle in degrees.
courseType	CodeCourseType	A code indicating the type of course to be observed. E.g. true track, magnetic track, heading, VOR radial, true bearing, magnetic bearing.
courseDirection	CodeDirectionReferenceType	Indicates flight direction to/from the navaid providing the course guidance.
turnDirection	CodeDirectionTurnType	A code indicating the direction of the turn.
speedLimit	ValSpeedType	The value of the speed limit on the procedure leg. Rules: As a plausibility rule, value should be equivalent to between 0 and 400, when expressed in Km/h.
speedReference	CodeSpeedReferenceType	A code indicating the reference system for a speed value.
speedInterpretation	CodeAltitudeUseType	A code indicating how the speed attributes of a procedure leg should be interpreted.
bankAngle	ValAngleType	The recommended bank angle of the aircraft on the turn. Rules: As a plausibility rule, value should be between 5 and 35 degrees.
length	ValDistanceType	Length of the segment
duration	ValDurationType	Segment duration
procedureTurnRequired	CodeYesNoType	Indicates if a procedure turn is required at the end of the segmentleg. Default is No.
upperLimitAltitude	ValDistanceVerticalType	The value of the upper altitude used with codeDescrDistVer: At or below the higher altitude. Between the lower and the upper altitude.
upperLimitReference	CodeVerticalReferenceType	A code indicating the reference for a vertical distance. Two series of values exist: 1) real distance: from GND, from the MSL, from the WGS-84 ellipsoid 2) pressure distance: QFE, QNH, STD.
lowerLimitAltitude	ValDistanceVerticalType	The lower limit altitude. used with codeDescrDistVer: At or above the lower altitude. At the lower altitude Between the lower and the upper altitude. Lower altitude is recommended. Expect lower altitude by ATC.
lowerLimitReference	CodeVerticalReferenceType	A code indicating the reference for a vertical distance. Two series of values exist: 1) real distance: from GND, from the MSL, from the WGS-84 ellipsoid 2) pressure distance: QFE, QNH, STD.
altitudeInterpretation	CodeAltitudeUseType	A code indicating how the altitude attributes of a procedure leg should be interpreted.
altitudeOverrideATC	ValDistanceVerticalType	Alternate altitude when directed by Air Traffic Control
altitudeOverrideReference	CodeVerticalReferenceType	A code indicating the reference for a vertical distance. Two series of values exist: 1) real distance: from GND, from the MSL, from the WGS-84 ellipsoid 2) pressure distance: QFE, QNH, STD.
verticalAngle	ValAngleType	The value of the vertical climb angle of the aircraft on the procedure leg. A negative value means descent. Rules: As a plausibility rule, value should be between -10 and +50 degrees.

Association	Multiplicity	Role	To	Role description
beginsAt	0..1	startPoint	TerminalSegmentPoint	The point used to indicate the beginning of a segment.
terminatesAt	0..1	endPoint	TerminalSegmentPoint	The point used to indicate the end of a segment.
isDepictedBy	0..1	trajectory	Curve	The path of the moving aircraft on the segment leg.
has	0..1	arcCentre	TerminalSegmentPoint	The center point used to define an arc.
isLimitedBy	0..1	angle	AngleIndication	The angle defined to limit aircraft trajectory.
isLimitedBy	0..1	distance	DistanceIndication	The distance defined to limit aircraft trajectory.
isValidFor	0..*	aircraftCategory	AircraftCharacteristic	Classification of aircraft based on 1.3 times stall speed in landing configuration at maximum certified landing mass.
establishes	0..1	holding	HoldingPattern	Established holding used on a procedure.
isEvaluatedBy	0..*	designSurface	ObstacleAssessmentArea	An evaluation area used when designing a procedure segment to insure safety of aircraft
hasAnnotations	0..*	annotation	Note

From	Association	Multiplicity	Role	To	Role description
ProcedureDME	isEvaluatedFor	0..1	segmentLeg	Segment Leg used for evaluating the Distance Measuring Equipment
ProcedureTransition	isComposedOf	0..*	transitionLeg	One segment of a transition.

This class is specialized into: ApproachLeg , ArrivalLeg , DepartureLeg

1 - Approach Procedure Overview , 1 - Overview , 1 - SID , 1 - STAR , 2 - Obstacle Assesment Associations , 3 - Segment Leg , 4 - SegmentLegSpecialization , 6 - Segment Leg DME