2.7
HOVERLANE LIGHTS
The hoverlane lights shall be alternating green and yellow steady burning
lights along the hoverlane centerline. The fixtures shall be [FAA AC
150/5345-46, Type L-861 for elevated lights with aviation yellow or
aviation green globes] [as shown on the contract drawings]. The elevated
lights shall be frangibly mounted on [steel stakes] [bases]. For hoverlane
lights located in paved areas subjected to aircraft or vehicle traffic, the
fixtures shall be [FAA AC 150/5345-46, Type L-852E with aviation yellow or
aviation green filters mounted on FAA AC 150/5345-42, Type L-868 bases] [as
required]. The hoverlane lights shall be energized from a [6.6 ampere
series circuit through isolation transformers] [120-240 volt multiple
circuit] power source as required by the contract drawings. The isolation
transformers for series circuits shall be FAA AC 150/5345-47, Type L-830-1,
6.6/6.6 amperes, 30/45 watts 60 hertz.
2.8
EXPLOSION-PROOF AVIATION LIGHT FIXTURE
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NOTE: Only fixtures that are listed by U.L. or an
equivalent lab shall be used in a hazardous
location. Listing must reflect the installed
configuration. A listing for the fixtures shown in
Standard Detail No. 40-06-05, sheet 12 has not been
obtained.
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For lights located in explosion hazardous areas, the fixtures
shall be
approved and listed to meet the requirements of UL Elec Const
Dir or FM
P7825a as defined in NFPA 70 for the hazard and application.
The
explosion-proof fixtures are located as shown on the contract
drawings or
otherwise specified herein.
2.9
HELIPAD LIGHTING, VISUAL METEOROLOGICAL CONDITIONS (VMC)
The VMC helipad lighting basically consists of the perimeter lights; but
landing direction lights, approach direction lights, helipad floodlights,
and helipad inset lights shall be provided as specified.
2.9.1
Perimeter Lights
The perimeter lights are used to mark the edges of helipads intended for
operations at night. The fixtures shall be FAA AC 150/5345-46, Type L-861
with aviation yellow globes. These elevated lights shall be frangibly
mounted on [steel stakes] [FAA AC 150/5345-42, Type L-867 bases]. For
perimeter lights located in paved areas subject to aircraft or vehicular
surface traffic, the fixtures shall be FAA AC 150/5345-46, Type L-852E with
aviation yellow filters. These fixtures shall be mounted on FAA Type L-868
bases. These lights shall be energized from a [6.6 ampere circuit through
isolation transformers] [120/240 volt multiple circuit] as required by the
contract drawings. The isolation transformers for series circuits shall be
FAA AC 150/5345-47, Type L-830-1, 6.6/6.6 amperes, 30/45 watts, 60 hertz.
2.9.2
Landing Direction Lights
The landing direction lights mark the preferred direction for the approach
to landing on the helipad. The light fixtures shall be FAA AC 150/5345-46,
Type L-861 with aviation yellow globes. These elevated lights shall be
SECTION 16525A
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