CS ADR-DSN.T.920 Fencing

(a)The safety objective of fencing is to prevent animals or unauthorised persons that could be a safety risk to aircraft operations, to enter the aerodrome.

(b)Fencing should be sited as far away from the runway and taxiway centre lines as practicable.

(c)Suitable means of protection such as fence or other suitable barrier should be provided on an aerodrome to prevent the entrance to the aerodrome:

(1)by non-flying animals large enough to be a hazard to aircraft; and/or

(2)by an unauthorised person. This includes the barring of sewers, ducts, tunnels, etc. where necessary to prevent access.

(d)Suitable means of protection should be provided to deter the inadvertent or premeditated access of unauthorised persons into ground installations and facilities essential for the safety of civil aviation located off the aerodrome.