STROBE LIGHT (white)
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 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.
Airplane General, Emergency Equipment, Doors, Windows -Systems Description 737 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.
NO SMOKING signs:
.
illuminate when gear is extended
.
extinguish when gear is retracted.
All passenger signs can be controlled manually by positioning the respective switch to ON or OFF.
When the passenger cabin signs illuminate or extinguish, a low tone sounds over the PA system.
Emergency Lighting
Exit lights are located throughout the passenger cabin to indicate the approved emergency exit routes. The system is controlled by a switch on the overhead panel. The switch has three positions: OFF, ARMED and ON, and is guarded to the ARMED position. With the switch in the ARMED position, the emergency exit lights are normally extinguished. If electrical power to DC bus No. 1 fails or if AC power has been turned off, the emergency exit lights illuminate automatically.
The emergency exit lights may also be illuminated by a switch on the aft attendant’s panel. Lifting the guard and pushing the switch ON overrides the flight deck control and illuminates the emergency exit lights. Control from this panel is available in the event of failure of the automatic control.
The flight deck aft DOME light contains a separate bulb that is powered by the emergency lighting system to provide for flight deck evacuation.
Interior Emergency Lighting
Interior emergency exit lights are located:
.
in the lower inboard corner of stowage bins to illuminate the aisle
. over the entry/service and overwing emergency hatches to indicate the
door and hatch exits
.
in the ceiling to locate the exits and provide general illumination in the
area of the exits.
Self-illuminating exit locator signs are installed at the forward, middle, and aft end of the passenger cabin.
Copyright . The Boeing Company. See title page for details.
1.40.4 December 7, 2001
Airplane General, Emergency Equipment, Doors, Windows -Systems Description
737 Operations Manual
Floor proximity emergency escape path lighting consists of locator lights spaced at regular intervals down one side of the aisle. Lighted arrows point to overwing exits and a lighted EXIT indicator is near the floor by each door and overwing exit. Escape path markings are provided for visual guidance for emergency cabin evacuation when other sources of cabin lighting are obscured.
Exterior Emergency Lighting
Exterior emergency lights illuminate the escape slides. The fuselage-installed escape slide lights are adjacent to the forward and aft service and entry doors. Two lights are also installed on the fuselage to illuminate the overwing escape routes and ground contact area.
Emergency Exit Lighting
EXIT LOCATOR SIGNS
-Located in the passenger cabinceiling.
FLOOR PROXIMITY
AISLE LOCATOR LIGHTS
EMERGENCY EXIT SIGNS
- Located in the forward and aft lowered ceiling,in the center of the passenger cabin abovethe overwing escapehatches, and above eachentry and service door.
Copyright . The Boeing Company. See title page for details.
December 1, 2000 1.40.5
Airplane General, Emergency Equipment, Doors, Windows -Systems Description
737 Operations Manual
Oxygen Systems
Two independent oxygen systems are provided, one for the flight crew and one for the passengers. Portable oxygen cylinders are located throughout the airplane for emergency use.
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