ICAO Annex 15 defines Transition altitude as follows:
The altitude at or below which the vertical position of an aircraft is controlled by reference to altitudes.
According to PANS-AIM, the transition altitude is only required for airspaces listed in section "AD 2.17 ATS airspace" (e.g. CTR).
| Note | ||
|---|---|---|
| ||
| In AIXM 5.1.1, the transitionAltitude is an attribute of the AirportHeliport feature. There is no association between the Airspace feature and the AirportHeliport feature in AIXM. |
Coding Example
Coding example can be found in the DONLON AIXM 5.1.1 AIP data set file.
| No. | Description | XPath Expression |
|---|---|---|
| AHP-EX-01 | Transition Altitude | //aixm:AirportHeliportTimeSlice[@gml:id='AHP_EADD']/aixm:transitionAltitude |