LIGHTS – GENERAL
The lighting system includes the following sub-systems:
• Interior lights
• Exterior lights
• Emergency lights
INTERIOR LIGHTS
Interior lights supply illumination for:
• cockpit instruments & control panels
• cockpit ambient and map reading
• anti storm, utility and dome lights
• cabin ambient and passenger reading lights
• baggage compartment
All interior lights can be NVG-compatible (optional kit); in that case a Mode
selector switch is installed on the LT control panel.
DISPLAYS, INSTRUMENTS AND CONTROL PANELS
The brightness of the Display Units is adjusted by four individual knobs on
the DIM control panel.
The brightness of the MCDU and Stand-by Instrument LCDs is adjusted by
dedicated controls on the individual panel/instrument.
Other cockpit instruments and control panels are provided with integral
illumination controlled by three knobs on the LT control panel, according to
their location area: Overhead Console, Instrument Panel or Central Console.
The LT control panel knobs are also provided with a switch and permit:
• turning on and off the integral lights
• adjustment of integral lights brightness
• selection of day/night mode for the annunciators
Two power supply units for the Instrument Panel and one each for the
Overhead and Central Consoles provide variable DC voltage (0 to 5 VDC) to
the integral lamps.
The power supply units are supplied by the following buses and via the
following circuit breakers:
• Instrument Panel ESS 2 INST PNL circuit breaker
• Overhead Console MAIN 1 OVHD circuit breaker
• Central Console MAIN 1 CSL circuit breaker
ANTI-STORM LIGHTS
Anti storm lights are halogen lights installed on the overhead panel. They are
used to prevent pilot dazzling caused by storm lightning.
The anti-storm light are provided by MAIN 2 bus via the STORM circuit
braker.
COCKPIT UTILITY LIGHTS
The cockpit utility lights consist of two lamps secured to supports located on
the overhead console side walls, one on the right side (Pilot cockpit light)
and one on the left side (Copilot cockpit light).
The supports are provided with a swiveling joint so that each cockpit utility
light beam can be adjusted in direction.
Each light has a flexible cable, so that it can be removed from the support
and handled by pilot or copilot.
Each cockpit utility light incorporates the controls for:
• turning the light on and off
• brightness adjustment
• color selection
• beamwidth adjustment
The cockpit utility lights are supplied by the following buses and via the
following circuit breakers:
• Pilot ESS 2 CKPT PLT circuit breaker
• Copilot MAIN 1 CKPT CPLT circuit breaker