PURPOSE AND SCOPE This document discusses@ in broad and general terms@ the effects of various natural and man-made influences on the design@ construction@ equipping@ operation and long term supportability of gas turbine engine test facilities. It will assist existing or future operators of gas turbine engine test facilities in making informed decisions regarding the siting@ design@ construction or long term support of their facilities. This document is intended to aid operators in understanding the basic terms and concerns regarding gas turbine engine test facility site selection. It is not intended that this document be an exhaustive design guide such that any operator or contractor could accomplish the task of gas turbine test facility site selection independently and without further specialist advice or assistance. To this end it is suggested that this document be read in in conjunction with other SAE International specialist ARP and AIR documents and in association with other industry experts from the OEM's@ test facility specialist design houses@ architects with specialised knowledge or independent consultants (SME's) within the field