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lighting of FATO, TLOF, taxiways and aprons.
i) distances ro rhe nearest metre or foot of localizer and
glide path elements comprising an instrument landing
system (ILS) or azimuth and elevation antenna of
2.6 Co-ordination between aeronautical information
services and heliport authorities
2.6.1 To ensure that aeronautical information services
units obtain information to enable them to provide up-to-date
pre-flight information and to meet the need for in-flight
information, arrangements shall be made between aeronautical
information services and heliport authorities responsible for
heliport services to report to the responsible aeronautical
information services unit, with a minimum of delay;
b) the operational status of associated facilities, services
and navigation aids within their area of responsibility:
6/11/97
No. 2
Chapter 2 Annex 14 - Aerodromes
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
infornlation service for the preparation, production and issue
of relevant material for promulgation. To ensure timely
provision of the information to the aeronautical information
service, close co-ordination between those services concerned
is therefore required.
2.6.3 Of a particular importance are changes to
aeronautical information that affect charts andlor computerbased
navigation systems which qualify to be notified by the
aeronautical information regulation and control (AIRAC)
system, as specified in Annex 15, Chapter 6 and Appendix 4.
The predetermined, internationally agreed AIRGC effective
dates in addition to 14 days postage time shall be observed by
the responsible heliport services when submitting the raw
informationldata to aemnautical information services.
2.6.4 The heliport services responsible for the provision of
raw aeronautical informationldata to the aeronautical
information services shall do that while taking into account
accuracy and integrity requirements for aeronautical data as
specified in Appendix 1 to this Annex.
Note I.- Specifications for the issue of u NOTAM
and SNOWTAM are contained in Annex 15, Chapter 5,
Appendices 6 and 2 respectively.
Note 2.- Tlte AIRAC information is distributed by the AIS
at least 42 days in advance of the AJRAC efecrive dates with
the objective of reaching recipients at least 28 days in advan,ce
of the effective date.
Note 3.- The schedule oj' the predetermined internationally
agreed AIRAC conzinon efictive dates at intervals
of 28 days, including 6 Novenlher 1997 and guidance for rhe
AIRAC use are contained in the Aeronautical Inforination
Services Manual (Doc 8126, Chapter 3, 3.1.1 and Chapter 4,
4.41.
6/11/97
No. 2
APPENDIX 1. AERONAUTICAL DATA QUALITY REQUIREMENTS
Table 1. Latitude and longitude
Accuracy Classitication
Latitude and longitude Data type Integrity
30 m routiilc
Heliport reference point. . . . . . . . . . . . . . . . . . . . . . . . . surveyed/calculated 1 x 10"
3 m essential
NAVNDS located at the heliport. . . . . . . . . . . . . . . . . surveyed 1 x 104
Obstacles in the circling area and at the heliporl. ..
3 rn essential
surveyed 1 x
Significant obstacles in the approach 3 m essential
and take-off area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . surveyed 1 x 10.'
1 m critical
Geometric centre of TLOF or FAT0 thresholds . . . . . surveyed 1 x
Ground taxiway centre line points, air taxiways 0.5 m essential
and transit routes points . . . . . . . . . . . . . . . . . . . . . . . . surveyed/calculated 1 x 10-5
0.5 m routine
Helicopter stand-points/INS check-points. . . . . . . . . . . surveyed 1
ANNEX 14 -VOLUME II 6/11/97
No. 2
Annex 14 -Aerodromes Volume II
Table 2. Elevation/Altitude/Height
Accuracy Classification
Data type Integrity
Heliport elevation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 rn or 1 ft
surveyed
essential
1 10-5
WGS-84 geoid undulation at heliport
elevation position. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0.5 m or 1 ft
surveyed
essential
1 x
FAT0 threshold, non-precision approaches 0.5 m or 1 ft
surveyed
essential
1 x 10.5
essential
I 10-5
WGS-84 geoid undulation at FAT0 threshold, TLOF
geometric centre, non-precision approaches. . . . . . . . .
0.5 m or I ft
surveyed
FAT0 threshold, precision approaches. . . . . . . . . . . . . 0.25 m or 1 ft
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