.
lighting systems . emergency egress
. oxygen systems . flight deck seats

.
fire extinguishers .galleys

.
emergency equipment . water systems

.
doors and windows . lavatories

.
cargo compartments .airstairs.

Lighting Systems
Lighting systems described in this chapter include:
.
exterior lighting . passenger cabin lighting

.
flight deck lighting . emergency lighting.

Exterior Lighting
Exterior lighting consists of these lights:
.
landing .strobe

.
runway turnoff . anti–collision

.
taxi . wing illumination

.
logo . wheel well.

.
position (navigation)

Retractable Landing Lights
Retractable landing lights are installed in the lower airplane fuselage. The lights are designed to extend and shine forward, parallel to the waterline of the airplane. The lights may be extended at any speed.
Copyright . The Boeing Company. See title page for details.
Airplane General, Emergency Equipment, Doors, Windows -Systems Description 737 Flight Crew Operations Manual

Fixed Landing Lights
Two fixed landing lights are in the wing leading edge. The lights shine forward and down in a fixed position.
Runway Turnoff Lights
Runway turnoff lights are in each wing root. The lights illuminate the area in front of the main gear.
Taxi Lights YA626, YA721 - YC154
The taxi light is mounted on the nose wheel strut and points in the same direction as the nose wheel.
Taxi Lights YA613, YA686, YA687, YC411 - YK104
The taxi light is mounted on the nose wheel strut and points in the same direction as the nose wheel. The light extinguishes automatically when the nose gear is retracted.
Logo Lights
Logo lights are located on the top of each horizontal stabilizer surface to point light on both sides of the vertical stabilizer.
Position Lights
The navigation lights are the standard red (left forward wingtip), green (right forward wingtip), and white (aft tip of both wings) position lights.
Strobe Lights
Three high intensity white strobe lights are installed on the left forward wing tip, right forward wing tip, and tail cone.
Anti–collision Lights
Two red anti–collision strobe lights are located on the top and bottom of the fuselage.
Wing Illumination Lights
Wing lights are installed on the fuselage and illuminate the leading edge of the wing.
Wheel Well Lights
Lights are installed in the wheel well of the nose gear and each main gear.
Copyright . The Boeing Company. See title page for details.
1.40.2  June 1, 2005

Airplane General, Emergency Equipment, Doors, Windows -Systems Description
Exterior Lighting Locations

Flight Deck Lighting
Flight deck lighting is provided for panel illumination, area lighting and localized illumination. Dome lights supply general flight deck flood lighting. The glareshield supplies background light for the main instrument panels. Each instrument and instrument panel has its own integral lights. Floodlights are installed for the MCP, aisle stand, and aft circuit breaker panel.
Map lights, chart lights and utility lights are available at the pilot stations, each with individual controls.
If normal electrical power is lost, standby electrical power is automatically provided to the standby compass light, dome lights, instrument flood lights and selected system information and warning lights.
Passenger Cabin Lighting
Passenger cabin lighting is supplied by incandescent and fluorescent lights. General cabin lighting is provided by window lights, ceiling lights, and entry lights. Reading lights are located above each passenger seat in the passenger service unit. Lights are also installed in the lavatories and galleys.
Copyright . The Boeing Company. See title page for details.
Airplane General, Emergency Equipment, Doors, Windows -Systems Description 737 Flight Crew Operations Manual

Passenger Cabin Signs
The passenger cabin signs are controlled by a switch on the forward overhead panel. With Auto selected, the signs are controlled automatically by reference to landing gear and flap positions:
FASTEN BELTS and RETURN TO SEAT signs:
.
illuminate when flaps or gear are extended

.
extinguish when flaps and gear are retracted.

YA626, YC411, YC413 NO SMOKING signs:
.
illuminate when gear is extended

.
extinguish when gear is retracted.

YA613, YA686 - YC154, YD651 - YK104 NO SMOKING signs:
. are illuminated at all times.
All passenger signs can be controlled manually by positioning the respective switch to ON or OFF.
　
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