Escape Path Aisle Lighting System
The floor proximity emergency escape path lighting system operates in conjunction with the existing emergency light system. The escape path and exit indicators are designed to motivate the passengers to quickly locate the nearest exit during emergency evacuations when low visibility conditions exist in the cabin. The system includes special cues for overwing exit locations and one-way egress routes. Input power is provided by two 6.0-volt battery packs activated in conjunction with the existing aircraft emergency lighting system.
The floor level light tracks are installed on the right side of the aisle if facing forward. The lights are clear and spaced at 20-inch intervals. Opposite each overwing exit are four red lights spaced at four-inch intervals to identify these exits. The last two lights in the track at either end of the cabin are red and spaced four inches apart. The light track on the catwalk in the tailcone has the lights installed on the right edge when facing aft there is also a spotlight illuminating the slide release handle.
In the forward entrance area under the flight attendant jumpseat headrest is a floodlight. This light is positioned to provide required passenger entrance way lighting between the end of the floor track to the two forward doors.
Adjacent to each overwing emergency exit is an exit identifier sign with an arrow pointing to the exit.
The exit signs with arrows for the forward doors are to the right of the passenger entrance and to the right of the forward service door.
The exit identifier sign for the aft door is located to the right of the door when facing aft, below the flight attendant panel.
The battery packs are located in the forward cabin overhead drop down panel and the aft cabin overhead left lavatory drop down panel.
Fire Extinguishers

Life Rafts - Currently Not Installed Life Vests
Life vests for the flight crew are orange in color and stowed in pockets on the back of the seat. The observer’s vest is stowed in the pocket on the back of the captain’s seat.
Passenger life vests are yellow in color and are stowed under the passenger’s seat.
Cabin attendant vests are orange and are stowed in compartments adjacent to their seats. Spare life vests are located:
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In the forward right-hand overhead bin.

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In the aft left-hand overhead bin.

Instructions for donning are printed on the vest.
Each vest is normally inflated by pulling on tagged cable ends which release CO2 cartridges. However, the vest can also be inflated by oral tubes attached to the vest.
Lavatory Fire Extinguishers
Heat activated fire extinguishers for each disposed receptacle located within the lavatory have been installed. The built-in fire extinguisher will discharge automatically into each disposed receptacle upon occurrence of a fire in the receptacle.
Lavatory Smoke Detectors
Smoke detector units are installed in each lavatory. The units measure 4 x 6 inches and are usually mounted below the vanity behind the access door; hence out of view to the passenger. A test switch located adjacent to each detector will provide a confidence check. This test is the responsibility of maintenance and is not required to be checked by the crew.
Only a 4-7% smoke concentration will activate the aural and visual alarm system. The detector uses a photo electron device to pick up the smoke obscuration. The percentage of smoke concentration necessary to activate the alarm is dependent on the efficiency of the lav ventilation system. Based on an average ventilation system, a cigarette smoker will probably activate the alarm system.
The aural alarm consists of the cabin chimes sounding every 4 seconds (15 pulses per minute); and the visual component consists of the amber call light stations or locations. Both aural and visual alarms remain active until the smoke concentration is reduced below alarm level, or the detector canon plug is removed, or the call system circuit breaker is pulled. The smoke detector is wired through the call system electrical system. Therefore, the call system and smoke detector are located on a single circuit breaker.
The smoke detector system is completely separate from the fire extinguisher system (when installed). An aircraft may be legally dispatched provided either the detector or the extinguisher system is working properly. Check the MEL. In the event of a false warning, the preferred method to deactivate the malfunctioning unit would be to disconnect the canon plug, and then block that lavatory. Pulling the circuit breaker would deactivate all or several detectors and the call system.
Protective Breathing Equipment
General Description
The PBASCo protective breathing equipment (PBE) is a closed circuit breathing apparatus designed to help protect the wearer’s eyes and respiratory tract in an irrespirable atmosphere by isolating the breathing functions from the environment.
　
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