Name	Data Type	Definition
angle	ValBearingType	The indication of a bearing (at a given point) by the measurement of the angle between the bearing and either True North or Magnetic North (this should appear explicitly or implicitly). The angle is measured clockwise from 0 degrees up to but not including 360 degrees. The value can also be a VOR radial. For example, Westward is expressed as 270.
angleType	CodeBearingType	A code indicating the direction of the zero bearing. For example, magnetic north or true north.
indicationDirection	CodeDirectionReferenceType	Code indicating the if the angle is TO or FROM the Navaid or Designated Point that is used.
trueAngle	ValBearingType	The indication of a bearing (at a given point) by the measurement of the angle between the bearing and True North. The angle is measured clockwise from 0 degrees up to but not including 360 degrees. The value can also be a VOR radial. For example, Westward is expressed as 270.
cardinalDirection	CodeCardinalDirectionType	The angle expressed as compass direction.
minimumReceptionAltitude	ValDistanceVerticalType	The lowest altitude that an aircraft can receive signal.

Association	Multiplicity	Role	To	Role description
locates	0..1	fix	DesignatedPoint	A selected point that may have references (distance and/or angle indications)
uses	0..1	pointChoice	SignificantPoint	A choice of a navaid, an airport reference point, a TLOF aiming Point, a fix , a lat/long indicated by point object, or a Rwy threshold which defines the facility makeup..
hasAnnotations	0..*	annotation	Note

From	Association	Multiplicity	Role	To	Role description
PointReference	isBasedOnAngle	0..*	facilityAngle	Angle from the facility to the Significant Point.
SegmentLeg	isLimitedBy	0..1	angle	The angle defined to limit aircraft trajectory.

2 - Designated Point , 2 - Point Reference , 3 - Segment Leg