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required for air navigation purposes which must be located on
the non-graded portion of a runway strip should be regarded
as an obstacle and should be frangible and mounted as low as
possible.
Note.- Guidance on the siting of navigation aids is
contained in the Aerodrome Design Manual, Part 6 (in
preparation).
9.9.5 Unless its finction requires it to be there for air
navigation purposes, no equipment or installation shall be
located within 240 m from the end of the strip and within:
a) 60 m of the extended centre line where the code number
is 3 or 4; or
b) 45 m of the extended centre line where the code number
is 1 or 2;
of a precision approach runway category I, I1 or 111.
9.9.6 Any equipment or installation required for air
navigation purposes which must be located on or near a strip
of a precision approach runway category I, I1 or I11 and which:
a) is situated on that portion of the strip within 77.5 m of
the runway centre line where the code number is 4 and
the code letter is F; or
Volume I
b) is situated within 240 m from the end of the strip and
within:
1) 60 m of the extended runway centre line where the
code number is 3 or 4; or
2) 45 m of the extended runway centre line where the
code number is 1 or 2; or
c) penetrates the inner approach surface, the inner
transitional surface or the balked landing surface;
shall be frangible and mounted as low'as possible.
9.9.7 Existing non-visual aids need not meet the
requirement of 9.9.6 b) until 1 January 2010.
Note.- See 5.3.1.5 for the protection date for existing
elevated approach lights.
9.9.8 Recommendation.- Any equipment or installation
required for air navigation purposes which is an obstacle of
operational significance in accordance with 4.2.4, 4.2.11,
4.2.20 or 4.2.27 should be ji-angible and mounted as low as
possible.
9.10 Fencing
Application
9.10.1 Recommendation.- A fence or other suitable
barrier should be provided on an aerodrome to prevent the
entrance to the movement area of animals large enough to be
a hazard to aircrafi.
9.10.2 Recommendation.- A fence or other suitable
barrier should be provided on an aerodrome to deter the
inadvertent or premeditated access of an unauthorked person
onto a non-public area of the aerodrome.
Note 1.- This is intended to include the barring of sewers,
ducts, tunnels, etc., where necessary to prevent access.
Note 2.- Special measures may be required to prevent the
access of an unauthorized person to runways or taxiways
which overpass public roads.
9.10.3 Recommendation.- Suitable means ofprotection
should be provided to deter the inadvertent or premeditated
access of unauthorized persons into ground installations and
facilities essential for the safety of civil aviation located oflthe
aerodrome.
Location
9.10.4 Recommendation.- The fence or barrier should
be located so as to separate the movement area and other
facilities or zones on the aerodrome vital to the safe operation
of aircrafiflom areas open to public access.
9.10.5 Recommendation.- When greater security is
thought necessary, a cleared area should be provided on both
sides of the fence or barrier to facilitate the work of patrols
and to make trespassing more dlficult. Consideration should
be given to the provision of a perimeter road inside the
aerodrome fencing for the use of both maintenance personnel
and security patrols.
9.11 Security lighting
Recommendation.- At an aerodrome where it is deemed
desirable for security reasons, a fence or other bam'er
provided for the protection of international civil aviation and
its facilities should be illuminated at a minimum essential
level. Consideration should be given to locating lights so that
the ground area on both sides of the fence or barriel;
particularly at access points, is illuminated.
CHAPTER 10. AERODROME MAINTENANCE
10.1 General
10.1.1 Recommendation.- A maintenance programme,
including preventive maintenance where appropriate, should
be established at an aerodrome to maintain facilities in a
condition which does not impair the safety, regularity or
eficiency of air navigation.
Note 1.- Preventive maintenance is programmed
maintenance work done in order to prevent a failure or
degradation of facilities.
Note 2.- "Facilities" are intended to include such items as
pavements, visual aids, fencing, drainage systems and
buildings.
10.1.2 Recommendation. - The design and application
of the maintenance programme should observe Human
Factors principles.
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