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 (Figure 3-13); a halogen spot-
light assembly, flush-mounted in the right side
of the fuselage aft of the cockpit (Figure 3-20);
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 pushbutton 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 cir-
cuit breaker panel.
EXTERIOR CONVENIENCE
LIGHTS (OPTIONAL)
When installed, the optional convenience light-
ing group consists of an area light mounted be-
neath each engine pylon to illuminate the
baggage compartment area on the left side of
the airplane, and the single-point pressure re-
fueling (SPPR) access door area on the right
side of the airplane. Both area lights are pow-
ered from the hot bus system.
Selection of the baggage area light is by an ad-
ditional switch mounted inside the baggage
compartment. The switch is automatically
switched OFF whenever the baggage com-
partment door is closed. The SPPR area light
is controlled via the SPPR panel power switch.
This switch is forced to the OFF position when
the door is closed.
ABNORMAL EXTERIOR
LIGHTING CONDITIONS
Single Generator Failure
Following a single generator failure, the air-
plane electrical system automatically sheds
non-essential equipment. Powered by the right
non-essential bus, the external logo lighting
system will be inoperative.
Dual Generator Failure
Should the airplane experience dual genera-
tor failure, airplane external lighting will be
affected in addition to the logo lighting sys-
tem that was already lost with a single gener-
ator failure. External lighting that will be
inoperative with the loss of the left and right
main busses is as follows:
Left Main Bus:
•
Anticollision Lights
•
Left Landing/Taxi Lights
Right Main Bus:
•
Wing Inspection Light
•
Right Landing/Taxi Lights
•
Navigation Lights
Should the airplane experience this malfunc-
tion during night operations, consideration
should be given as to which main electrical bus,
left, right, both or neither will be selected on
prior to landing to regain lost external light-
ing.
L E A R J E T 4 5
P I L O T T R A I N I N G M A N U A L
3-15
FOR TRAINING
FlightSafety
international
Figure 3-20. Wing Inspection Light