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taxiing behind will have to be taken into account to pment
degradation of the treatment.
Size and number of de-icing/~ti-icing pads
Note.- An aeroplane de-icinghti-icing pad consists of
a) an inner area for parking of an aeroplane to be treated, and
b) an outer area for movement of two or more mobile de-icing/
Note.- Safe and @cient aeroplane operations are of anti-icing equipment.
primary importance in the development of an aemplane deicing/
anti-icing facility. or further guidance, see the Manual
on Aircraft Ground De-icing/Anti-icing Operations 3.15.5 Recommendation.- The size of a de-icinglanti-
(Doc 9640). icing pad should be equal to the parking area required by the
most demanding aeroplane in a given category with at least
3.8 m clear paved area all m n d the aeroplane for the
General movement of the de-icing/anti-icing vehicles.
3.15.1 Recommendation.- Aeroplane de-icindanti- Note.- Where more than one de-icing/anti-icing pad is
icing facilities should be provided at an aerodrome where provided, consideration will have to be given to providing deicing
conditions are expected to occur. icinglanti-icing vehicle movement m a s of aajacent pads that
24/l1/05
No. 7
Chapter 3 Annex I4 -Aerodromes
do not overlap, but are exclusive for each pad. Consideration
will also need to be given to bypassing of the area by other
aeroplanes with the clearances specified in 3.15.9 and 3.15.10.
3.15.6 Recommendation.- The number of de-icing/antiicing
pads required should be determined based on the
meteorological conditions, the type of aeroplanes to be treated,
the method of application of de-icinghnti-icingfluid, the type
and capacity of the dirpensing equipment used, and the
departure flav rates.
Note.- See the Aerodrome Design Manual, Part 2.
Slopes on de-icing/anti-ichg pads
3.1 5.7 Recommendation.- The de-kindanti-icing pah
should be provided with suitable slopes to ensure satirfactory
drainage of the area and to permit collection of all excess
de-kindanti-icing fluid running off an aeroplane. The
maximum longitudinal slope should be as little as practicable
and the transverse slope should not exceed 1 per cent.
Saength of de-icing/anti-icing pads
3.15.8 Recommendation.- me de-icing/anti-icing pad
should be capable ofwithstanding the traffic of the aircraft it
is intended to serve, due consideration being given to the fact
that the de-icing/anti-icing pad (like an apron) will be
subjected to a higher density of traffic and, as a result of slowmoving
or stationary aircraft, to higher stresses than a
runway.
Clearance distances on a de-icingtanti-icing pad
3.15.9 Recommendation.- A de-icing/anti-icing pad
should provide the minimum clearances specijied in 3.13.6 for
aircraff stands. Ifthe pad layout is such as to include bypass
configuration, the minimum separation distances specijiid in
Table 3-1, column 12, should be provided.
3.15.10 Recommendation.- Where the de-icindantiicing
facility is located adjoining a regular taxiway, the
taxiway minimum separation distance specijed in Table 3-1,
column 11, should be provided. (See Figure 3-44
Environmental considerations
Note.- me excess de-icinganti-icing fluid running off an
aeroplane poses the risk of contamination of pund water in
addition to aflecting the pavement su$ace fiction
characteristics.
3.1 5.1 1 Recommendation- Where de-icing/&.-icing
activities are camed out, the sug7ace drainage shdd be planned
to collect the run-offseparaterY, pmnting its mixing with the
normal surface nur-off so that it does not pol& the ground
water.
Minimum separation
distance (see 3.15.10 and
Table 3-1, column 11) - - - - - - - - - - - - -
Intermediate holding
position marking
facility .
Figure 3-4. Minimum separation distance on a de-icinglanti-icing facility
WlUOS
No. 7
Chapter 5 Annex 14 - Aerodromes
except that pairs of touchdown zone markings coincident with 5.2.8.2 Recommendation.- Taxiway centre line marking
or located within 50 m of an aiming point marking shall be should be provided on a paved taxiway, de-icing/anti-icing
deleted from the pattern. facility and apron where the code number k I or 2 in such a
way as to provide continuous guidance between the runway
5.2.6.5 Recommendation.- On a non-preckion u p centre line and aircrafi stands.
proach runway where the code number is 2, an additionalpaw
of touchdown zone marking stnpes should be provided 150 m 5.2.8.3 Taxiway centre line marking shall be provided on
beyond the beginning of the aiming point marking. a paved runway when the runway is part of a standard taxiroute
　
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