| Name | Data Type | Definition | |
|---|---|---|---|
| DH | string | [ICAO] Decision height. A specified height in the precision approach or approach with vertical guidance at which a missed approach must he initiated if the required visual reference to continue the approach has not been established. | |
| OCH | string | [ICAO] Obstacle clearance height (OCH). The lowest height above the elevation of the relevant runway threshold or the aerodrome elevation as applicable, used in establishing compliance with appropriate obstacle clearance criteria. | |
| MDH | string | [ICAO] Minimum descent height. A specified height in a nonprecision approach or circling approach below which descent must not be made without the required visual reference. | |
| OTHER | string | Other |