TM 1-1510-262-10
(3) Cabin utility lights. A utility light is located adjacent to each overhead lood light in the cabin area.
The rheostat/switch placarded OFF - ON - BRT located on the back of each light individually controls the utility
lights. A momentary ON switch is located in the center of the rheostat. The light is capable of producing a red
or white spotlight by adjusting a diaphragm, located in front of the light. To remove the light from the stationary
position, pull down on the light. The light is connected to the light housing by an 11 inch coiled cord that extends
to approximately 50 inches. Power for the utility lights is provided through the 5-ampere circuit breaker placarded
CABIN LIGHTS , on the overhead circuit breaker panel 2-12.
(4) Cabin door-latching mechanism light. An annunciator is provided to check the cabin door latching
mechanism. A red pushbutton switch located adjacent to the round observation window, which is just above the
second step, controls it.
2-81. EMERGENCY LIGHTING.
a. Description. An independent, battery operated, emergency lighting system is installed. The system is actu-
ated automatically by shock, such as a forced landing. It provides adequate lighting inside and outside the fuselage
to permit the occupants to read instruction placards and locate exits. An inertia switch, when subjected to a 2 G
(minimum) shock, will illuminate interior lights in the cockpit, forward and aft cabin areas, exterior lights aft of the
emergency exit and aft of the cabin door. The battery power source is automatically recharged by the aircraft elec-
trical system.
b. Operation. An emergency lights override switch, located on the overhead control panel (Fig. 2-13), is pro-
vided to turn the system off if it is accidentally actuated. The switch is placarded EMERGENCY OFF/RESET - AUTO
- TEST . Should the system accidentally actuate, the emergency lights will illuminate. Placing the switch in the mo-
mentary OFF/RESET position will extinguish the lights. To test the system, place the switch in the TEST position.
The lights should illuminate. Moving the switch to the OFF/RESET position will turn the system off and reset it. The
switch is normally in the AUTO position.
2-83
