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Interim Report - Introduction - EASA

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INTERIM REPORT – OPTIONS FOR CHANGE – ATTACHMENT B<br />

<strong>EASA</strong>.2009.OP.21<br />

Location<br />

1) storage tanks and transfer systems for de-icing/anti-icing fluids; and<br />

2) de-icing crew shelter.<br />

3.15.2 Recommendation.— De-icing/anti-icing facilities should be provided either at aircraft<br />

stands or at specified remote areas along the taxiway leading to the runway meant for takeoff,<br />

provided that adequate drainage arrangements for the collection and safe disposal of<br />

excess de-icing/anti-icing fluids are available to prevent ground water contamination. The<br />

effect of volume of traffic and departure flow rates should also be considered.<br />

Note 1.— One of the primary factors influencing the location of a de-icing/anti-icing<br />

facility is to ensure that the holdover time of the anti-icing treatment is still in effect at<br />

the end of taxiing and when take-off clearance of the treated aeroplane is given.<br />

Note 2.— Remote facilities compensate for changing weather conditions when icing<br />

conditions or blowing snow are expected to occur along the taxi-route taken by the<br />

aeroplane to the runway meant for take-off.<br />

Doc 9640<br />

Off-terminal de-icing/anti-icing<br />

8.11 De-icing/anti-icing facilities away from the terminal are recommended when<br />

terminal de-icing/anti-icing facilities (including apron facilities) cause excessive gate<br />

delays and/or taxi times that frequently cause holdover times to be exceeded.<br />

Remote pad de-icing/anti-icing facilities<br />

8.12 Remote de-icing/anti-icing facilities located near departure runway ends or along<br />

taxiways are recommended when taxi times from terminals or off-terminal deicing/anti-icing<br />

locations frequently exceed holdover times. The proper design of<br />

these facilities can also improve flow control by permitting repeat de-icing/anti-icing of<br />

aeroplane critical surfaces without the aeroplane having to return to more distant<br />

treatment sites.<br />

3.15.4 Recommendation.— The remote de-icing/anti-icing facility should be so located as to<br />

provide for an expeditious traffic flow, perhaps with a bypass configuration, and not require<br />

unusual taxiing manoeuvre into and out of the pads.<br />

Note.— The jet blast effects caused by a moving aeroplane on other aeroplanes<br />

receiving the anti-icing treatment or taxiing behind will have to be taken into account<br />

to prevent degradation of the treatment.<br />

3.15.6 Recommendation.— The number of de-icing/anti-icing pads required should be<br />

airsight GmbH - 66 -

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