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the flight compartment. The control panel has three positions, ON/OFF/AUTO. When
either switch is turned ON, light for the no smoking or seat belt symbol illuminates.
When the NO SMKG switch is set to AUTO, the no smoking lights in the cabin
illuminate automatically when the landing gear is selected down, or when cabin
depressurization occurs (cabin pressure greater than 8,000 feet).
When the SEAT BLTS switch is set to AUTO, the seat belt symbol in the cabin
illuminates automatically when the landing gear is selected down, or the slats/flaps are
not in the zero degree position, or when cabin depressurization occurs (cabin pressure
greater than 8,000 feet).
Passenger Signs Electronic Chime
The chime will sound when the system operates automatically, or if either the NO
SMKG or SEAT BLTS switch is selected to the ON position.
PASS SIGNS
NO SMKG SEAT BLTS
OFF
ON
AUTO
OFF
ON
AUTO
EMER LIGHTS
OFF
ON
ARM
O
O
AU
O
AU
GX_15_022
NO SMKG Switch
ON
OFF
AUTO
- Turns on all no smoking signs.
- Turns off all no smoking signs.
- NO SMKG switch will activate
the no smoking lights automatically,
when L/G down or when cabin alt
exceeds 8,000 ft.
SEAT BLTS Switch
ON
OFF
AUTO
- Turns on all seat belt signs.
- Turns off all seat belt signs.
- SEAT BLTS switch will activate
the seat belt lights automatically, when
slats/flaps not in zero degree position or
when cabin alt exceeds 8,000 ft.
GX_15_023
PAX SIGNS
ELECTRONIC
CHIME
For Training Purposes Only
Sept 04
15-21
P I LOT T R A I N I N G GU I D E
LIGHTING
PASSENGER LIGHTING SYSTEM
Lighting is provided to illuminate the stairs which are part of the main passenger door,
when entering or exiting the airplane. The door stair lighting includes:
• Door stair lights (each step)
• Two stair ground lights (lower step)
• Passenger door rear light (if installed)
Passenger/Crew Entrance Stair Lights
Entrance area lighting is provided to illuminate the stairs and the area in front of the
passenger door. Lighting for the entrance area is provided by door stair lights. Each
door stair light is installed in the vertical part of the step. The lower folding step
contains two door stair lights to supply light to the area in front of the passenger door.
GX_15_024
Internal Switch
(View looking from inside
the aircraft. Green aircraft
switches shown.)
NOTE:
Both switches are guarded
but not shown.
15-22 For Training Purposes Only
Sept 04
P I LOT T R A I N I N G GU I D E
LIGHTING
The stair lighting is controlled on and off by the STAIRS lights switch installed
internally adjacent to the main passenger door.
The stair lights receive power when the passenger door STAIRS light switch is
selected ON and the passenger door is open. The door open signal is received from a
switch located on the door assembly. The DOOR switch is installed next to the
STAIRS light switch and closing the door automatically shuts off the stair lighting.
SERVICE AND MAINTENANCE LIGHTING
The service and maintenance lights supply lighting to the work areas of the airplane
for servicing, maintenance and inspection purposes. The areas illuminated are:
• Nosewheel well
• Avionics compartments
• Aft equipment bay, and
• APU bay
These lights are controlled to the on/off position by several switches located in
proximity to the normal access areas. All service and maintenance lights are connected
directly to an airplane battery. The nosewheel well light and the avionics compartment
lights interface with one another. The aft equipment bay lights and the APU bay light
interface with each other.
GX_15_025
For Training Purposes Only
Sept 04
15-23
P I LOT T R A I N I N G GU I D E
LIGHTING
NOSEWHEEL BAY LIGHTING
A maintenance light is installed in the nosewheel bay. The light is controlled by the
switch on the forward external service control panel, or when any of the switches in
the avionics bay are selected.
All lights in the avionics bay and nose landing gear bay can be automatically turned
off by an autoshutoff device which prevents discharging of the avionics battery. After
15 minutes of normal operation, the lights will flash for approximately 10 seconds.
The lights will then resume normal operation. When 20 minutes of normal operation
(total time) have elapsed, the lights are automatically turned off. All lights can be
turned off and the timing sequence canceled by selecting any of the switches twice
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