Environmental Data Coding Specifcation        ISO IEC LogosRight Title Graphic
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Status: STD 2005/06/07
Code: 439

Concept definition: A <SURFACE> of constant <<ATM_PRESSURE>> that is measured in relation to the specific pressure <DATUM> 1 013,25 hectopascals and is separated from other such <SURFACE>s by specific pressure intervals; flight level.
Reference type: PR
Reference: [IAN4, 1.1, "flight level"]
Supplemental references:  

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