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including 6 m
3 1 200 m up to but not
including 1 800 m
C 24 m up to but not
including 36 m
6 m up to but not
including 9 m
4 1 800 m and over D 36 m up to but not
including 52 m
9 m up to but not
including 14 m
E 52 m up to but not
including 65 m
9 m up to but not
including 14 m
F 65 m up to but not
including 80 m
14 m up to but not
including 16 m
a. Distance between the outside edges of the main gear wheels.
23/11/06
No. 8
Chapter 3 Annex 14 — Aerodromes
3-11 25/11/04
3.9 Taxiways
Note.— Unless otherwise indicated the requirements in this
section are applicable to all types of taxiways.
General
3.9.1 Recommendation.— Taxiways should be provided
to permit the safe and expeditious surface movement of aircraft.
Note.— Guidance on layout of taxiways is given in the
Aerodrome Design Manual (Doc 9157), Part 2.
3.9.2 Recommendation.— Sufficient entrance and exit
taxiways for a runway should be provided to expedite the
movement of aeroplanes to and from the runway and provision
of rapid exit taxiways considered when traffic volumes are high.
3.9.3 Recommendation.— The design of a taxiway
should be such that, when the cockpit of the aeroplane for
which the taxiway is intended remains over the taxiway centre
line markings, the clearance distance between the outer main
wheel of the aeroplane and the edge of the taxiway should be
not less than that given by the following tabulation:
Code letter Clearance
A 1.5 m
B 2.25 m
C 3 m if the taxiway is intended to be
used by aeroplanes with a wheel
base less than 18 m;
4.5 m if the taxiway is intended to be
used by aeroplanes with a wheel
base equal to or greater than 18 m.
D 4.5 m
E 4.5 m
F 4.5 m
Note 1.— Wheel base means the distance from the nose
gear to the geometric centre of the main gear.
Note 2.— Where the code letter is F and the traffic density
is high, a wheel-to-edge clearance greater than 4.5 m may be
provided to permit higher taxiing speeds.
3.9.4 As of 20 November 2008, the design of a taxiway
shall be such that, when the cockpit of the aeroplane for which
the taxiway is intended remains over the taxiway centre line
markings, the clearance distance between the outer main wheel
of the aeroplane and the edge of the taxiway shall be not less
than that given by the following tabulation:
Code letter Clearance
A 1.5 m
B 2.25 m
C 3 m if the taxiway is intended to be used
by aeroplanes with a wheel base less than
18 m;
4.5 m if the taxiway is intended to be used
by aeroplanes with a wheel base equal to
or greater than 18 m.
D 4.5 m
E 4.5 m
F 4.5 m
Note 1.— Wheel base means the distance from the nose
gear to the geometric centre of the main gear.
Note 2.— Where the code letter is F and the traffic density
is high, a wheel-to-edge clearance greater than 4.5 m may be
provided to permit higher taxiing speeds.
Note 3.— This provision applies to taxiways first put into
service on or after 20 November 2008.
Width of taxiways
3.9.5 Recommendation.— A straight portion of a taxiway
should have a width of not less than that given by the
following tabulation:
Code letter Taxiway width
A 7.5 m
B 10.5 m
C 15 m if the taxiway is intended to
be used by aeroplanes with a wheel
base less than 18 m;
18 m if the taxiway is intended to
be used by aeroplanes with a wheel
base equal to or greater than 18 m.
D 18 m if the taxiway is intended to
be used by aeroplanes with an
outer main gear wheel span of less
than 9 m;
23 m if the taxiway is intended to
be used by aeroplanes with an
outer main gear wheel span equal
to or greater than 9 m.
E 23 m
F 25 m
15/6/06
No. 9
Annex 14 — Aerodromes Volume I
25/11/04 3-12
Note.— Guidance on width of taxiways is given in the
Aerodrome Design Manual (Doc 9157), Part 2.
Taxiway curves
3.9.6 Recommendation.— Changes in direction of
taxiways should be as few and small as possible. The radii of
the curves should be compatible with the manoeuvring
capability and normal taxiing speeds of the aeroplanes for
which the taxiway is intended. The design of the curve should
be such that, when the cockpit of the aeroplane remains over
the taxiway centre line markings, the clearance distance
between the outer main wheels of the aeroplane and the edge
of the taxiway should not be less than those specified in 3.9.3.
　
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