Recommendation Date
Recipient Name
ATD MoT
Text
Review the information on the Christchurch Visual Terminal Chart in relation to the upper and lower limits of the northern boundary of the eastern segment of the Christchurch TMA to make it clear that the one arc defines a boundary of two areas with different lower levels.
Reply Text
The Christchurch VTC has been reviewed and no need is seen to adopt your recommendation per se.
The accident flight, in tracking from Eyrewell to Rangiora, passes very near the largest depiction the map of the TMA vertical limits.
At the northern 20 nm boundary, the device of indicating different segments with separate screened boarders with a thin "white" line in between is designed to make it quite clear that there is a change of airspace and this should be enough to avoid the error you say could be made. Nevertheless, further improvements in airspace depiction are already in progress.
The accident flight, in tracking from Eyrewell to Rangiora, passes very near the largest depiction the map of the TMA vertical limits.
At the northern 20 nm boundary, the device of indicating different segments with separate screened boarders with a thin "white" line in between is designed to make it quite clear that there is a change of airspace and this should be enough to avoid the error you say could be made. Nevertheless, further improvements in airspace depiction are already in progress.
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