scope:

This Part describes the natural environments that may be experienced by defence materiel. This encompasses the natural meteorological and biological environments in the Earth's atmosphere as well as the climatic, biological and contamination conditions that may be induced by service use. The occurrence of these natural and induced climatic, biological and contamination environments, are addressed alongside consideration of their effects on materiel. This Part also provides guidance on establishing materiel evaluation requirements against these environments. This Part implements NATO STANAG 4370 AECTP 230