ABSTRACT
Air transport operations sometimes are necessary where no runways exist, and where engineers cannot be pre-positioned owing to time constraints. An Opportune Landing Site (OLS) is then required. The concept behind OLS selection is to remotely select a large strip of land suitable for aircraft operations without making engineering preparations to the landing sites. Unlike semi-prepared or contingency runways, OLSs use natural land surfaces in austere environments that are relatively smooth, flat, and obstruction-free areas (i.e. pastures, fields, etc.).
