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the elevation of the touchdown and lift-off area and/or the
elevation and geoid undulation of each threshold of the final
approach and take-off area (where appropriate) shall be
measured and reported to the aeronautical information services
authority to the accuracy of
- one-half metre or foot for non-precision approaches; and
- one-quarter metre or foot for precision approaches.
Note.- Geoid undulation must be measured in accordance
with the appropriate system of coordinates.
2.4 Heliport dimensions and related information
2.4.1 The following data shall be measured or described,
as appropriate, for each facility provided on a heliport:
a) heliport type - surface-level, elevated or helideck;
b) touchdown and lift-off area - dimensions to the nearest
metre or foot, slope, surface type, bearing strength in
tonnes (1 000 kg);
c) final approach and take-off area - type of FATO, true
bearing to one-hundredth of a degree, designation
number (where appropriate), length, width to the nearest
metre or foot, slope, surface type;
d) safety area - length, width and surface type;
e) helicopter ground taxiway, air taxiway and air transit
route - designation, width, surface type;
f) apron - surface type, helicopter stands;
2.4.2 The geographical coordinates of the geometric
centre of the touchdown and lift-off area and/or of each
threshold of the final approach and take-off area (where
appropriate) shall be measured and reported to the aeronautical
information services authority in degrees, minutes, seconds
and hundredths of seconds.
2.4.3 The geographical coordinates of appropriate centre
line points of helicopter ground taxiways, air taxiways and air
transit routes shall be measured and reported to the
aeronautical information services authority in degrees,
minutes, seconds and hundredths of seconds.
2.4.4 The geographical coordinates of each helicopter
stand shall be measured and reported to the aeronautical
information services authority in degrees, minutes, seconds
and hundredths of seconds.
2.4.5 The geographical coordinates of obstacles in Area 2
(the part within the heliport boundary) and in Area 3 shall be
measured and reported to the aeronautical information services
authority in degrees, minutes, seconds and tenths of seconds.
In addition, the top elevation, type, marking and lighting (if
any) of obstacles shall be reported to the aeronautical
information services authority.
Note 1.- See Annex 15, Appendix 8, for graphical illustrations
of obstacle data collection surfaces and criteria used
to identifL obstacles in Areas 2 and 3.
Note 2.- Appendix 1 to this Annex provides requirements
for obstacle data determination in Areas 2 and 3.
Note 3. - Implementation of Annex 15, provision 10.6.1.2,
concerning the availability, as of 18 November 2010, of
obstacle data according to Area 2 and Area 3 specifications
would be facilitated by appropriate advanced planning for the
collection and processing of such data.
2.5 Declared distances
The following distances to the nearest metre or foot shall be
declared, where relevant, for a heliport:
a) take-off distance available;
b) rejected take-off distance available; and
g) cleanvay - length, ground profile; c) landing distance available.
h) visual aids for approach procedures, marking and
lighting of FATO, TLOF, taxiways and aprons; and 2.6 Co-ordination between aeronautical
infopation services and heliport authorities
i) distances to the nearest metre or foot of localizer and
glide path elements comprising an instrument landing 2.6.1 To ensure that aeronautical information services
system (ILS) or azimuth and elevation antenna of units obtain information to enable them to provide up-to-date
microwave landing system (MLS) in relation to the preflight information and to meet the need for in-flight
associated TLOF or FAT0 extremities. information, arrangements shall be made between aeronautical
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Annex 14 -Aerodromes Volume II
information services and heliport authorities responsible for
heliport services to report to the responsible aeronautical
information services unit, with a minimum of delay:
a) information on heliport conditions;
b) the operational status of associated facilities, services
and navigation aids within their area of responsibility;
c) any other information considered to be of operational
significance.
2.6.2 Before introducing changes to the air navigation
system, due account shall be taken by the services responsible
for such changes of the time needed by the aeronautical
information service for the preparation, production and issue
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