2.9.1
High Intensity Lighting
White, flashing light for daytime marking of obstructions in accordance
with FAA AC 70/7460-1, and fixtures in accordance with FAA AC 150/5345-43,
Type L-856.
2.9.2
Medium Intensity Lighting
White or red, flashing light for twilight/night marking of obstructions in
accordance with FAA AC 70/7460-1 and fixtures in accordance with FAA AC
150/5345-43, Type L-866. Photoelectric light control shall meet FAA
requirements.
2.9.3
Solid State Flasher
Provide zero voltage switching, at zero point of sine wave, to regulate the
on-off cycle of red hazard beacons. Flasher shall supply [one][two][three]
circuits[ as indicated].
2.10
EXTERNALLY LIGHTED WIND CONE
FAA AC 150/5345-27, Type L-807, with a frangible support assembly, lighted
with four lamps, and [an orange][a white] 3660 mm 12 foot fabric cone.
Provide wiring and controls. Supplemental wind cones, where used, shall be
Type L-806.
2.11
RUNWAY DISTANCE AND ARRESTING GEAR MARKERS
Runway distance markers shall conform to FAA AC 150/5345-44, Type L-858B,
Size 4, Style 3 with white or yellow numerals on a black background.
Provide markers to withstand a static wind load of 1.93 kPa 0.28 pound per
square inch, and suitable for connection to the secondary of the isolation
transformers specified. Provide internally illuminated markers with
illumination of the face not significantly decreasing when the series
lighting circuit is operated at the lowest brightness step. Construct
marker housing of fiber reinforced epoxy, with information face of
high-impact acrylic or ultraviolet stabilized polycarbonate.
2.11.1
Power Supply and Lamps
Style 3, [Class 1][Class 2][as indicated][as recommended by the sign
manufacturer].
2.11.2
Arresting Gear Markers
Markers shall have a 990 mm 3.25 foot translucent yellow circle in place of
numerals as specified above.
2.12
TRANSFORMERS
**************************************************************************
NOTE: Occasionally, power transformers will be
needed to support airfield systems. Edit this
paragraph as necessary to suit the specific airfield
installation.
**************************************************************************
SECTION 16522N
Page 19
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