This Technical Specification defines the requirements and testing procedures for inset and elevated luminaires with lamps used in aeronautical ground lighting systems and excluding luminaires for general lighting. This Technical Specification is applicable to inset or elevated luminaires used for: – approach lights: centreline, crossbars, supplementary approach; – runway lights: runway guard, threshold, threshold wingbar, centreline, edge, touch down zone, runway end, stopway lights; – taxiway lights : centreline, edge, stopbar, intermediate holding position lights; – heliports: aiming point, perimeter, fato luminaires. The purpose of this Technical Specification is to provide a set of requirements and tests, which are applicable to the luminaires and their control equipment. In general, this Technical Specification includes safety requirements for the luminaires. This Technical Specification is not applicable to visual approach slope indicator systems (PAPI (precision approach path indicators) etc.) and signs. Any other equipment not described in this Technical Specification is excluded from its scope.