LANDING GEAR
INDICATING SYSTEM
General
The landing gear position indicating system
consists of three split indicators that annun-
ciate the status of the nose and main gear, a
gear warning/caution system consisting of
aural and visual annunciations on the EICAS
and CWP, an airplane system test switch, and
the airplane mute switch.
Gear Position Lights
Annunciator lights for each of the three gear
indicate the gear status and are located above
the landing gear control switch, on the
GEAR/HYD control panel (Figure 14-1). Each
of the lights is split into two halves, with two
bulbs in each half. The lower half indicates a
gear down and locked status when the green
light and a “DOWN” caption is illuminated,
while the upper half is a gear advisory an-
nunciator (white with diagonal stripes). The
upper half of the nose gear indicator is illu-
minated whenever the nose gear is neither up
and locked nor down and locked. The upper
half of the main gear indicators are illumi-
nated anytime the inboard gear door on the cor-
responding main gear is not up and latched or
whenever the gear position does not agree
with the landing gear switch.
When the nose and main gear are fully re-
tracted and both inboard and outboard gear
doors for each side are closed, all gear posi-
tion lights are extinguished. When the gear is
extended, and the inboard gear doors are
closed, only the green DOWN lights are illu-
minated. Figure 14-2 illustrates the illumina-
tion sequence of events in a normal gear
extension.
When the gear is retracted, all three advisory
lights illuminate immediately and the
“DOWN” annunciators extinguish as soon as
the down locks are retracted. The nose gear ad-
visory annunciation extinguishes when the
14-3
FOR TRAINING PURPOSES ONLY
LEARJET 45 PILOT TRAINING MANUAL
FlightSafety
international
LEARJET 45 PILOT TRAINING MANUAL
FlightSafety
international
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