This European Standard specifies the technical requirements to minimise the hazards listed in clause 4 which can arise during the commissioning, operation and maintenance of PBB's when carried out in accordance with the specifications given by the manufacturer or his authorised representative. It also takes into account some require- ments recognised as essential by authorities, aircraft and ground support equipment (GSE) manufacturers as well as airlines and handling agencies. This standard applies to: apron-drive bridges; fixed-head bridges (also referred to as nose-loaders) or pedestal bridges; suspended bridges, for embarking/disembarking of passengers. It is applicable from the interface of the building to the connection with the aircraft. An example of a typical PBB is shown in annex A. This standard does not apply to: elevating lounges; passenger stairs; other forms of aircraft access equipment or to the fixed building structure to which the PBB interfaces. This standard does not establish requirements for hazards caused by noise and vibration. This Part of EN 12312 is not applicable to PBB's which are 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 vehicles) and EN 1915-4.