| Name | Data Type | Definition | |
|---|---|---|---|
| category | CodeCheckpointCategoryType | Indicates the position of the checkpoint; airborne or ground | Inherited from NavigationSystemCheckpoint |
| upperLimit | ValDistanceVerticalType | Indicating the upper limit of the block in which the check should be conducted. | Inherited from NavigationSystemCheckpoint |
| 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. | Inherited from NavigationSystemCheckpoint |
| lowerLimit | ValDistanceVerticalType | Indicating the lower limit of the block in which the check should be conducted. | Inherited from NavigationSystemCheckpoint |
| 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. | Inherited from NavigationSystemCheckpoint |
| altitudeInterpretation | CodeAltitudeUseType | Indicates how the upper and/or lower altitude values should be interpreted. | Inherited from NavigationSystemCheckpoint |
| distance | ValDistanceType | The value of the distance from the checkpoint to the navaid. | Inherited from NavigationSystemCheckpoint |
| angle | ValBearingType | The indication of a bearing (at a given point) by the measurement of the angle between the checkpoint and the navaid equipment (VOR) | Inherited from NavigationSystemCheckpoint |