touchdown zone elevation


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touchdown zone elevation (TDZE)

touchdown zone elevation (TDZE)
TDZE as it appears on approach charts.
The highest elevation in the first 3000 ft (900 m) of the landing surface. The TDZE is indicated on the instrument approach procedure chart when straight-in landing minimums are authorized.
References in periodicals archive ?
One mile from the MAP a helicopter may descend to 100 feet above the touchdown zone elevation.
Ideally, we'd use Threshold Elevation (THRe) rather than Touchdown Zone Elevation (TDZE) in our equations.