Technical and maintenance areas shall be protected by fencing, guards, patrols and access to these areas controlled by means of airport identification cards and vehicle passes. Similar measures shall be taken to protect the perimeter and such airport-based installations as power supplies, electrical sub-stations, navigational facilities, control towers and other buildings used by the air traffic control services, and fuel and communications facilities.
Online Language Learning Tool SkELL allows users to search for phrases in sentences, collocates and similar words. These examples have been automatically selected and may contain errors.