the left essential bus and is protected by the
“FLOOD” circuit breaker within the LIGHTS
group on the pilot circuit breaker panel.
CB PANEL – This rheostat controls the in-
tensity of overlay lighting on the pilot circuit
breaker panel. The panel receives 28 VDC
power from the left main bus and is protected
by a circuit breaker labeled “L CB” located
within the LIGHTS group on the pilot circuit
breaker panel.
Copilot Right Crew Lights Panel
The copilot R CREW LIGHTS panel (Figure
3-4) is 28 VDC powered from the right main
bus and protected by a circuit breaker labeled
“CKPT INSTRS R ESS PWR,” located within
the LIGHTS group of circuit breakers on the
copilot’s circuit breaker panel. The four copi-
lot LCU channels control:
• Channels 1 & 2–Copilot side main in-
strument panel and glareshield over-
lays, instruments, and pedestal overlays.
• Channel 3–Copilot circuit breaker panel.
• Channel 4–Right side bulbs that illu-
minate switch/indicators (S/I's).
Following is a description of each of the rheo-
stat/potentiometer controls located on the
copilot’s R CREW LIGHTS panel.
INSTR – The copilot’s instrument panel group
lighting is controlled via the INSTR rheostat
as illustrated in Figure 3-2. The display units
and the radio management units have their
own brightness control, however, the bezel
control backlighting for these units is con-
trolled by the INSTR rheostat. The copilot
grouping of instrument panel lights receive
28 VDC power from the right main bus and
is protected by a circuit breaker labeled “R
INSTR” located within the LIGHTS group
on the copilot circuit breaker panel.
OVRHD – This rheostat functions the same
as previously described under pilot’s left crew
light panel, in this chapter; however, it can-
not be turned on with the “COCKPIT” light
switch on the main entryway light control
panel as can the pilot overhead light. It is also
powered through the OVRHD circuit breaker
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
3-4
FOR TRAINING PURPOSES ONLY
FlightSafety
international
Figure 3-3. Pilot L CREW LIGHTS
Control Panel
Figure 3-4. Copilot R CREW LIGHTS
Control Panel