The miscellaneous lighting system provides light of the required intensity and distribution so that the crew may read instruments, placards, check lists, manuals, maps, instrument color coding, and distinguish controls, etc., without undue visual interference (e.g. reflection, glare, direct light etc.).

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The two area lights are provided for general illumination of the cockpit and are in the rear of the flight compartment. The area lights are located on the left and right, and are attached to the trim panel of the bulkhead at STA270.00 on Global Express/XRS and at STA270.00+32.00 on Global 5000 with a circular fastener so that all areas of the cockpit are illuminated. These lights contain 28 V halogen lamps and are controlled by the AREA OFF/DIM/BRT switch located on the COCKPIT LIGHTS, INTEGRAL/MISC control panel on the center pedestal.

Power is supplied by the avionics battery direct bus via the DCPC.

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The dome light is installed in the holder unit in the overhead panel. The dome light supplies general lighting for maintenance and cleaning. The light has a 28 V light emitting diode (LED).

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There are two swiveling map reading lights mounted on the window posts, one for the pilot and one for the copilot and allow sufficient movement to be aimed as required by the pilots. The flight crew reading lights have 28 V halogen lamp units. These lights include a variable OFF/BRT switch to control light intensity, and a light pattern change lever. The light head tilts 60 degrees and turns through 300 degrees. Power is supplied by the battery bus via the SPDA 2.

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The cockpit reading lights supply individual lighting for the pilot, copilot and third crew. There are three cockpit reading lights. Each unit has a 28 V light emitting diode (LED). The cockpit reading lights are installed in their holder units in the overhead panel. The control panels are located in the overhead panel (pilot and copilot) and in the bulkhead panel (third crew).

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The flood lighting provides general illumination for the instrument and control panels in the pilot, copilot side consoles and the pilot, copilot and center instrument panels.

The flood lights in the left, right and center areas of the cockpit have dedicated dimming control. The three switches are located on the COCKPIT LIGHTS, FLOOD/DISPLAY control panel on the center pedestal.

Side Console Lights

The left and right side consoles each have a light and holder unit. The lights are installed in the holder units located on the side consoles of the flight comparment. The holder units are attached to the aircraft structure. The light has a 28 VDC lamp. The lights are powered by the DC essential bus. The L and R rotary controls on the COCKPIT LIGHTS (FLOOD) control panel adjust the side console lights and the two outboard main instrument panel light intensities.

Main Instrument Panel Flood Lights

The main instrument panel has four light and holder units. Each holder unit contains three 28 VDC bulbs. The floodlights are installed above the main instrument panel and the holder units are attached to the trim panel under the glareshield. The lights are powered by the DC essential bus. The L and R rotary controls on the COCKPIT LIGHTS (FLOOD) control panel adjust the side console lights and the two outboard main instrument panel light intensities. The CTR rotary control adjusts the two center main instrument panel lights.

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The two floor lights provide illumination for the area between the rudder pedals and the pilots and copilots seat. Each of the lights has three 28 V lamps. The left and right floor lights each have a light and holder unit. The holder units are attached to the aircraft structure below the pilot and copilot instrument panels.

The phone lights are mounted at the rear sides of the side consoles. The lights each have a 28 V lamp.

Floor and phone lights are controlled by the FLOOR ON/OFF switch located on the COCKPIT LIGHTS, INTEGRAL/MISC control panel on the center pedestal.

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The eye reference lights aid the pilot and copilot to find their optimal seat position and are mounted above the center post of the windshield. The three eye reference light emitting diodes (LEDs) are controlled by the EYE REF ON/OFF switch located on the COCKPIT LIGHTS, INTEGRAL/MISC control panel on the center pedestal.

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The PBA lights illuminate when selections are made to annunciate a system failure, and when lamp test is executed. Intensity is controlled with a PBA DIM/BRT switch located on the COCKPIT LIGHTS, INTEGRAL/MISC control panel on the center pedestal.

PBAs are powered by the three lamp dimmer power supplies and the grounds are supplied by the lamp drivers of the 4 DAUs.

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The display lighting provides illumination for pilot, copilot and center instrument panel displays and the EMS CDUs.

The left, right and center displays have dedicated dimming controls. The L DISPLAY, CTR DISPLAY, and R DISPLAY switches are located on the COCKPIT LIGHTS, FLOOD/ DISPLAY control panel on the center pedestal.

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One flashlight on each side of the cockpit is provided for use in an abnormal or emergency condition. The portable flashlights are considered as part of the cockpit furnishing equipment. They are installed to be accessible from the flight crew seats.

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The COCKPIT LIGHTS (FLOOD/DISPLAY) control panel has six rotary switches to control the flood and display lights in the flight compartment. The panel is installed in the right side of the center pedestal, it is attached to the center pedestal structure with captive screws.

The DC bus 2 supplies power through SPDA 1. Three rotary switches (FLOOD) control the intensity of the main instrument panel floodlights and the side console. Three rotary switches (DISPLAY) control the intensity of the six display units.

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Area Lights

The area lights receive 28 VDC from the avionics battery direct bus when the AREA OFF/DIM/BRT switch on the COCKPIT LIGHTS, INTEGRAL/ MISC control panel is activated. For the BRT mode, the lights are paralleled to provide each light with 28 VDC. If one bulb fails the other will be bright even if DIM mode is selected.

Dome Lights

The avionics battery direct bus supplies power to the dome lights through the DC power center (DCPC). The door switch controls the dome light.

Flight Crew Reading (Map) Lights

The map lights receive power from the 28 VDC Battery Bus, SPDA #2, through the variable OFF/BRT control switch located directly on each light.

Cockpit Reading Lights

The cockpit reading lights receive power from DC bus 1, through the secondary power distribution assembly No. 4 (SPDA 4).

Cockpit Flood Lights

The flood lights receive variable power from the 28 VDC essential bus, SPDA 1, when the rotary switches on the COCKPIT LIGHTS, FLOOD/ DISPLAY control panel are out of detent position. Variable controls change the light intensity gradually from off to full bright.

Floor and Phone Lights

The floor lights are provided with power from 28 VDC BUS 2, SPDA 1, when the FLOOR ON/OFF switch located on the COCKPIT LIGHTS, INTEGRAL/MISC control panel on the center pedestal is activated.

Turning on the floor lights will also turn on the two phone lights.

Eye Reference Lights

The three eye reference lights are provided with power from 28 VDC BUS 2, SPDA 1, when the EYE REF ON/OFF switch located on the COCKPIT LIGHTS, INTEGRAL/MISC control panel on the center pedestal is activated.

Pushbutton Annunciation (PBA) Lights

The PBA lights brightness is controlled by the PBA BRT/DIM switch on the COCKPIT LIGHTS INTEGRAL/MISC control panel.

PBAs are powered by the three lamp dimmer power supplies and the grounds are supplied by the lamp drivers of the 4 DAUs.

Cockpit Display Lights

The display lights intensity is controlled with rotary DIM/BRT controls on the COCKPIT LIGHTS, FLOOD/DISPLAY PANEL.

The L DISPLAY knob controls the display of the EMS CDU, the primary flight display, and the multifunction display for the pilot. The R DISPLAY knob controls the EMS CDU, the primary flight display, and the multifunction display for the copilot. The CTR DISPLAY controls the EICAS primary display and the system display.

Cockpit Flashlights

The flashlights are automatically activated after removal from their retention brackets. The battery packs for the flashlights provide sufficient energy for an average of about two years in standby mode. A monitoring circuit provides indication of battery pack readiness and lamp integrity through a flashing LED. A flashrate at intervals of three to six seconds indicates a low voltage of approximately 6.75 V or a broken lamp filament. A flashrate interval increase to beyond 10 seconds indicates battery pack replacement.

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Component Location Index
IDENT	DESCRIPTION	LOCATION	IPC REF
DS44/DS45	AREA LIGHTS	ZONE(S) 221/222	33-13-01 [ GX ] [ GXRS ] [ G5000 ]
DS53/DS54	MAP READING LIGHTS	ZONE(S) 221/222	33-13-05 [ GX ] [ GXRS ] [ G5000 ]
DS46/DS47/DS51/DS52/DS72/DS73	SIDE CONSOLE LIGHTS	ZONE(S) 221/222	33-13-09 [ GX ] [ GXRS ] [ G5000 ]
DS39/DS40	PHONE LIGHTS	ZONE(S) 221/222	33-13-13 [ GX ] [ GXRS ] [ G5000 ]
DS41/DS42	FLOOR LIGHTS	ZONE(S) 221/222	33-13-17 [ GX ] [ GXRS ] [ G5000 ]
DS48/DS49/DS50/DS59	MAIN-INSTRUMENT-PANEL FLOODLIGHTS	ZONE(S) 221/222	33-13-21 [ GX ] [ GXRS ] [ G5000 ]
DS43	EYE REFERENCE LIGHTS	ZONE(S) 221/222	33-13-25 [ GX ] [ GXRS ] [ G5000 ]
AP27	COCKPIT LIGHTS (FLOOD/DISPLAY) CONTROL PANEL	ZONE(S) 222	33-13-33 [ GX ] [ GXRS ] [ G5000 ]
DS142	DOME LIGHT	ZONE(S) 221/222	33-13-45 [ GX ] [ GXRS ] [ G5000 ]
DS138/DS139/DS140	COCKPIT READING LIGHTS	ZONE(S) 221/222	33-13-49 [ GX ] [ GXRS ] [ G5000 ]

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