Airplane General - Lighting

Lighting systems include:

 

Exterior Lighting

External Lighting Panel.

Exterior lighting consists of these lights:

Landing Lights

Image of nose gear landing lights, showing turnoff lights positioned above nose gear landing lights.

The landing lights consist of the left, right and nose gear landing lights. The left and right landing lights are located in the left and right wing root and are optimized for flare and ground roll. The two nose gear-located landing lights are optimized for approach.

The nose gear lights are inoperative when the nose landing gear is not down and locked.

Runway Turnoff Lights

Two runway turnoff lights are mounted on the nose landing gear. They are inoperative when the nose landing gear is not down and locked.

White Anti-Collision Lights

The white anti-collision lights are strobe lights located on each wing tip.

The white anti-collision lights are strobe lights located on the outboard tip of each winglet.

Red Anti-Collision Lights

The red anti-collision lights are strobe lights located on the top and bottom of the fuselage.

Navigation (Position) Lights

The navigation lights are standard red (left forward wingtip), green (right forward wingtip) and white (aft tip of both wings) position lights.

The navigation lights are standard red (left forward winglet), green (right forward winglet) and white (inboard trailing edge of both winglets) position lights.

Wing Lights

Wing lights are installed on the fuselage and illuminate the leading edge of the wing.

Logo Lights

Logo lights are located on the stabilizer to illuminate the logo on the vertical tail surface.

Taxi Light

Nose Gear Taxy Light

One taxi light is installed on the steerable portion of the nose landing gear. The light is inoperative when the nose landing gear is not down and locked.


Service Lighting

Service lights are located in each wheel well, cargo compartment and various other work areas. Controls for these lights are located at the individual service areas.

Flight Deck Lighting

Overhead Lighting Panel

Flight deck lighting is provided for panel illumination, area lighting and localized illumination. Flood lights and light plates provide panel illumination. Dome lights provide flight deck area lighting. Map lights, chart lights and utility lights provide localized illumination.

Panel and flood lights illuminate the forward panels, glareshield and aisle stand panels. When the light override switch is ON, the forward flood lights, glareshield flood lights, dome lights, aisle stand flood lights and all illuminated annunciator lights illuminate at full brightness.

If normal electrical power is lost, the Standby magnetic compass light, forward panel flood lights and integral lights for essential instruments on the left forward, center forward and overhead panels are automatically switched to the Standby AC Bus.

Indicator Lights

Autobright Sensors.

Indicator light brightness can be set to DIM or BRT with the Indicator Lights Selector. The system automatically overrides the DIM position and illuminates the indicator lights full bright if the ambient flight deck light level increases to a preset crossover light value, as detected by system sensors located on the center forward panel.

Passenger Cabin Lighting

Passenger cabin lighting is provided by white incandescent and fluorescent lights. General cabin illumination is accomplished with ceiling, sidewall wash and night lights. These are supplemented by reading, closet, attendant work, galley and lavatory lights. Lights are distributed over forward, mid and aft zones with controls located at the appropriate flight attendant panel.

Bright threshold entry lights, for passenger boarding, illuminate when the entry door is opened, and are inhibited when the door is closed.

The ceiling light, located just aft of the flight deck door, automatically extinguishes when the flight deck door is opened.

Emergency Lighting