Draft ICAO Circular on NLA.pdf - Airports Council International

<strong>ICAO</strong> Version 4.1 — 15 March 2004
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taxiway centre line. In addition, the edges of these taxiways may need to be provided with taxiway edge
lights.
4.4.2.3 PAPI/APAPI
4.4.2.3.1 It is expected that the eye-to-wheel height of the NLA would comply with the requirements
of Annex 14, Volume I, Chapter 5, Table 5.2. As such, the PAPI units are not likely to be affected. However,
the position of the engines may mean that PAPI units sited closest to the runway edge could be subject to
greater jet blast. This should be monitored on a regular basis to ensure that the setting angles are not distorted
and the lenses are kept clean.
4.5 GROUND SERVICING OF AEROPLANES
4.5.1 Fuelling of aircraft (to be issued later)
4.5.2 Aeroplane de-icing/anti-icing facilities
4.5.2.1 The increased mass, wing span and surface area of NLA will require some reconsideration
of the adequacy of the de-icing/anti-icing facilities to accommodate them.
4.5.2.2 Particular attention will be needed to:
a) adequate space on the pad to ensure a clear paved area of no less than 3.8 m to facilitate
the movement of de-icing/anti-icing vehicles (See Annex 14, Volume I,
paragraph 3.14.5);
b) sufficient clearance between pad and adjacent manoeuvring areas taking the NLA
dimensions into consideration;
c) surface markings to ensure wing tip clearance from obstructions and other aircraft,
especially if another NLA is also to be accommodated on the pad;
d) load bearing capacity of the existing structure;
e) greater quantities of de-icing/anti-icing agent required;
f) containment of excess run-off of de-icing/anti-icing agent;
g) turning circle capabilities of NLA;
h) jet blast implications, especially in static breakaway and turns, including the risk of
possible degradation of agent caused on smaller aircraft nearby; and
i) revision of pad management procedures in terms of the respective positioning and
exiting of NLA versus smaller aircraft types.