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Note.- Guidance on this issue is contained in the Heliport
5.3.5.21 Recommendation.- A HAPI system intended Manual.
for installation on a floating helideck should afford a
stabilization of the beam to an accuracy of + 1/4" within + 3" pitch and roll movement of the heliport.
Obstacle protection surface
5.3.6 Final approach and take-off area lights
Application
Note.- The following spec$cations apply to PAPI, APAPI
and HAPI.
5.3.6.1 Where a final approach and take-off area is
established at a surface level heliport on round intended for
use at night, final approach and take-off Lea lights shall be
5.3.5.22 An obstacle protection surface shall be provided except that hey may be omitted where the final
established when it is intended to provide a visual approach approach and take-off area and the touchdown and lift-off area
slope indicator system. are nearly coincidental or the extent of the final approach and
take-off area is self-evident.
5.3.5.23 The characteristics of the obstacle protection
surface, i.e. origin, divergence, length and slope shall
correspond to those specified in the relevant column of
Table 5- 1 and in Figure 5- 13. Location
5.3.5.24 New objects or extensions of existing objects
5.3.6.2 Final approach and take-off area lights shall be
shall not be permitted above an obstacle protection surface placed along the edges of the final approach and take-off area.
except when, in the opinion of the appropriate authority, the The lights shall be uniformly spaced as follows:
new object or extension would be shielded by an existing
immovable object. a) for an area in the form of a square or rectangle, at
intervals of not more than 50 m with a minimum of four
Note.- Circumstances in which the shielding principle lights on each side including a light at each comer; and
mSearyv icreesa sMonanaubalyl, Pbea rta p6.p lied are described in the Airport b) for any other shaped area, including a circular area, at
intervals of not more than 5 m with a minimum of ten
lights.
5.3.5.25 Existing objects above an obstacle protection
surface shall be removed except when, in the opinion of the
appropriate authority, the object is shielded by an existing
immovable object, or after aeronautical study it is determined
that the object would not adversely affect the safety of
operations of helicopters.
5.3.5.26 Where an aeronautical study indicates that an
existing object extending above an obstacle protection surface
could adversely affect the safety of operations of helicopters
one or more of the following measures shall be taken:
a) suitably raise the approach slope of the system;
5.3.6.3 Final approach and take-off area lights shall be
fixed omnidirectional lights showing white. Where the
intensity of the lights is to be varied the lights shall show
variable white.
5.3.6.4 Recommendation.- The light distribution of
final approach and take-oflarea lights should be as shown in
Figure 5-9, Illustration 5.
b) reduce the azimuth spread of the system so that the object 5.3.6.5 Recommendation.- T k lights should not
is outside the confines of the beam; meed a height of 25 cm and should be inset when a light
extendin,g above the surface would endanger helicopter
C) displace the axis of the system and its associated obstacle operations. Where a final approach and take-ofS area is not
protection surface by no more than 5"; mearit for lift-off or touchdown, the lights should not exceed a
height of 25 crn above ground or snow level.
Annex 14 - Aerodromes Volume I1
5.3.7 Aiming point lights
Application
5.3.7.1 Recommendation.- Where an aiming point
marking is provided at a heliport intended for use at night,
aiming point lights should be provided.
Location
5.3.7.2 Aiming point lights' shall be collocated with the
aiming point marking.
Characteristics
5.3.7.3 Aiming point lights shall form a pattern of at least
six omnidirectional white lights as shown in Figure 5-4. The
lights shall be inset when a light extending above the surface
could endanger helicopter operations.
5.3.7.4 Recommendation.- The light distribution of
aiming point lights should be as shown in Figure 5-9,
Illustration 5.
5.3.8 Touchdown and lift-off area lighting system
Application
5.3.8.1 A touchdown and lift-off area lighting system
shall be provided at a heliport intended for use at night.
5.3.8.2 The touchdown and lift-off area lighting system
for a surface level heliport shall consist of one or more of the
following:
a) perimeter lights; or
b) floodlighting; or
C) luminescent panel lighting when a) and b) are not
　
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