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stabilizer, and the lower light is mounted on the bottom of the wing/
fuselage fairing.
Each light unit incorporates two flash tubes, one with an aviation red
filter and one with a clear filter. Control over both anti-collision lights
is via the three-position BCN/STROBE-BCN/OFF light switch on the
LIGHTS control panel. When the switch is placed in the BCN/STROBE
position, the red light in each unit flashes if the airplane is on the
ground, or the clear flashtube flashes, if airborne. When the switch is
placed in the BCN position, the red flashtube in each light unit flashes
whether the airplane is on the ground or airborne.
The combined anti-collision light system, with each light unit pulsed
independently, has a flash rate of approximately 100 pulses per minute.
The system receives power from the left main bus and is protected by
the BCN/STROBE circuit breaker located within the LIGHTS group on
the pilot’s circuit breaker panel.
WING INSPECTION LIGHT
The wing inspection light system provides the copilot with a means to
visually detect ice buildup on the airplane wings during night
operations. The system consists of a WING INSP light pushbutton,
located on the LIGHTS control panel; a halogen spotlight assembly,
flush-mounted in the right side of the fuselage aft of the cockpit; and a
black spot located on the right wing leading edge. The black spot
enhances visual detection of ice accumulation; however, clear ice may
not be detectable by visual inspection alone.
The WING INSP push button is a momentary action switch, meaning
that the inspection spotlight illuminates the wing area only when the
switch is held depressed. The system is powered by the right main bus
and is protected by the WING INSP circuit breaker located within the
LIGHTS group on the copilot’s circuit breaker panel.

　
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