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rain and corrective maintenance action should be taken as
necessary.
10.2.7 Recommendation.- When a taxiway is used by
turbine-engined aeroplanes, the surface of the taxiway
shoulders should be maintained so as to be* of any loose
stones or other objects that could be ingested by the aeroplane
engines.
Note.- Guidance on this subject is given in the Aerodrome
Design Manual, Part 2.
10.2.8 The surface of a paved runway shall be maintained
in a condition so as to provide good friction characteristics and
low rolling resistance. Snow, slush, ice, standing water, mud,
dust, sand, oil, rubber deposits and other contaminants shall be
removed as rapidly and completely as possible to minimize
accumulation.
Note.- Guidance on determining and expmsing the
fiction characteristics when conditions of snow or ice cannot
be avoided is given in Attachment A, Section 6. Z b Airport
Services Manual, Part 2, containsfirrther information on thir
subject, on improving fiction characteristics and on clearing
of runways.
10.2.9 Recommendation.- A taxiway should be kept
dear of snow, slush, ice, etc., to the extent necessary to enable
aimrap to be taxied to andfim an operational runway.
10.2.10 Recommendation.- Aprons should be k q t
clear of snow, slush, ice, etc., to the extent necessrny to enable
ANNEX 14 - VOLUME I 2411 1/05
No. 7
Annex 14 -Aerodromes Volume I
aircraft to manoeum safely ol; where appropriate, to be 10.3.3 Recommendation.- The entim width of the
towed or pushed. runway should be overlaid during each work session.
10.2.11 Recommendation.- Whenever the clearance of 10.3.4 Before a runway being overlaid is returned to a
snow, slush, ice, etc., fiDm the various parts of the movement temporary operational status, a runway centre line -king
ama cannot be cawied out simultaneously, the order of to the specifications in sedan 5.2.3 shall be
prion'ty should be as follows but may be altemdfollaving, as provided. Additionally, the location of any temporary threshnecessary,
consultation with the aerodmme users: old shall be identified by a 3.6 m wide transverse shipe.
1st - runway(s) in use;
2nd - taxiways serving runway(s) in use;
3rd - apron(s);
4th - holding bays; and
10.4 Visual aids
Note.- These specifications am intended to deJine the
maintenance pegormance level objectives. They am not
intended to defne whether the lighting system is operationally
out of service.
5th - other areas.
10.4.1 A light shall be deemed to be unserviceable when
10.2.12 Recommendation.- Chemicals to remove or to the main beam average intensity is less than 50 per cent of the
prevent the formation of ice andfist on aerodrome pavements value specified in the appropriate figwe in Appendix 2. For
should be used when conditions indicate their use could be light units where the designed main beam average intensity is
effective. Caution should be aerc$ed in the application of the above the value shown in Appendix 2, the 59 per cent value
chemicals so as not to create a mom slippery condition. shall be related to that design value.
Note.- Guidance on the use of chemicals for aerodrome 10.4.2 A system of preventive maintenance of visual aids
pavements I;r given in the Airport Services Manual, Part 2. shall be employed to ensure lighting and marking system
reliability.
10.2.13 Chemicals which may have harmful effects on
aircraft or pavements, ar chemicals which may have toxic Note.- Guidance on preventive maintenance of vkual aidr
effects on the aerodrome environment, shall not be used. $ given in the Airport Services Manual, Part 9.
10.3 Runway pavement overlays
10.4.3 Recommendation.- The system of preventive
maintenance employed for a pmcision approach runway
categoty 11 or 111 should include at least the fol1owng check:
Note.- lk following specifcations am intended for a) visual inspection and in-field measurement of the
runway pavement overlay projects when the runway is to be intensity, beam spmad and orientation of lights included
rehrrned to an operational status worn overlay of the entire in the approach and runway lighting systems;
runway is complete thus normally necessitating a temporary
ramp between the new and old runway sugaces. Guidance on b) control and measumment of the electrical characteroverlaying
pavements and assessing their operational status is $tics of each circuitty included in the approach and
given in the Aerodrome Design Manual, Part 3. runway lighting systems; and
10.3.1 The longitudinal slope of the temporary ramp, c) control of the comct firnctioning of light intensity
measured with ~eference to the existing runway surface or settings used by air trafic control.
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