UFC 3-535-01
17 November 2005
(20 feet) from the usual station, position the nearby light stations to provide more
uniform spacing between lights.
3-5.7
Power Requirements
The electrical power for the MALSR approach lights must be as follows:
3-5.7.1
For the centerline and 300 meter (1,000 foot) crossbar steady-burning
lights, a special power unit must furnish power to these lights from a multiple circuit
rated at 120 volts or 120/240 volts 3-wire. This power unit must energize the lights at
any of the three intensity settings selected.
3-5.7.2
For the SFL, the power to operate these lights is furnished by the master
control unit at 120 volts. These lights have individual power supply units which may be
combined with or separated from the flasher head. Allow an additional 5 KVA of
transformer capacity for the SFL.
NOTE: Emergency power is not essential for the MALSR system, but if emergency
power is available, it should be used with the automatic emergency power transfer.
3-5.8
Control Requirements
The MALSR must be remotely controlled from the airfield lighting control panel in the
control tower. Alternate control from the airfield lighting vault is desirable. A separate
control must provide for switching ON and OFF and for selecting the intensity setting of
the centerline lights, the 300 meter (1,000 foot) bar lights, and the SFL.
3-5.9
Monitoring Requirements
Automatic monitoring is not required, but must be operational if installed.
3-5.10
Equipment
See paragraphs 13-9.5 through 13-9.5.4 for typical MALSR components.
3-5.10.1
Fixtures and Components
The lighting equipment for the MALSR is shown in Chapter 13. Typical elevated steady-
burning lights for the centerline lights and 300 meter (1,000 foot) bar lights are shown in
the figures. Each SFL consists of a flasher head and a power supply unit. The flasher
head and power supply unit may be combined to install at any distance of not more than
45 meters (150 feet) from the power supply unit.
3-5.10.2
Light Supports
The type of supports for the MALSR lights depends on the height of the light or barrette
above the surface as follows:
3-5.10.2.1
Elevated light heights 2 meters (6 feet) or less use frangible supports.
3-5.10.2.2 Light heights between 2 meters (6 feet) and 13 meters (40 feet) use low-
impact-resistant supports. The individual SFL or 5-light barrettes must be installed on
low-impact-resistant supports of the correct height. These supports may be non-
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