This document specifies the technical requirements to minimise the hazards listed in Clause 4 which can arise during the commissioning, operation and maintenance of specific air conditioning equipment for aircraft ground support, when carried out in accordance with the specifications given by the manufacturer or his authorised repre-sentative. It also takes into account some performance requirements recognised as essential by authorities, aircraft and ground support equipment (GSE) manufacturers as well as airlines and handling agencies. This document is not dealing with the hazards of air conditioning machinery itself, but with the equipment for the specific application of such machinery as aircraft ground support equipment. This document applies to all types of moveable air conditioning equipment with evaporators for cooling, heating and ventilating the interior of civil aircraft from outside (ground air conditioning). Examples see Annex A. It also applies to air conditioning units and accessories, e.g. hoses, couplers, mounted on moveable parts of passenger boarding bridges and/or moveable parts of fixed centralized aircraft air conditioning equipment, whether passenger boarding bridge mounted or ramp integrated. This document does not establish requirements for noise and vibration. Noise and vibration are dealt with respectively in EN 1915-4 and EN 1915-3. This document is not dealing with hazards in respect to a standard automotive chassis and the traffic on the apron. This Part of EN 12312 is not applicable to air conditioning equipment, which is manufactured before the date of publication of this standard by CEN. This part of EN 12312 is intended to be used in conjunction with EN 1915-1, EN 1915-2, EN 1915-3 (for vehi-cles) and EN 1915-4.