Circuit Breaker Panel Lights

T-34C AIRCRAFT SYSTEMS FAMILIARIZATION

CHAPTER TEN

WORKBOOK

(post) and FLDT (floodlights). Each rheostat is rotated clockwise from OFF to BRT to brighten

the lights to full intensity at the full clockwise position. When moving the INST rheostat out of

the OFF detent the annunciator lights, master caution light, wheels light, and AOA indexer will

dim.

Console Lights

The left and right side console panels in both cockpits are backlighted by individual panel

interior lights and left and right side console floodlights located on each sidewall. The interior

lighting is controlled by a rheostat labeled LTS under the CONSOLE group label on the interior

lights control panel, and the floodlights are controlled by the rheostat labeled FLDT. Both

rheostats control the lighting from OFF to BRT by clockwise movement of the respective

rheostat. Full clockwise rotation to the BRT position gives full intensity.

Utility Lights

Each cockpit is provided with a special multipurpose utility light. This light is designed to

selectively provide either red or white illumination utilizing a narrow spotlight beam or a wider

floodlight beam. Attached by a curl cord, this moveable light has two snap-in permanent

mounting bases on the right sidewall and may be detached by simply pulling the light straight out

of the base. Selection of white spot, white flood, red flood, or red spot is possible. The color

may be changed on some models by unlocking a lock on top of the light while turning the front

section and on newer models by a slide type switch. The light has a dimming rheostat for

controlling beam intensity and an override push-button which provides instantaneous full lamp

brilliance regardless of rheostat setting.

Circuit Breaker Panel Lights

The circuit breaker panels in either cockpit may be individually backlighted as desired with a

two-position circuit breaker type switch on the circuit breaker panels. The switches are labeled

PANEL LTS and control the interior lighting on the respective circuit breaker panel. These

lights are constant brilliance lights; therefore, no dimming feature is provided.

1004. EXTERIOR LIGHTING

The exterior lighting system consists of the landing, navigation, and anticollision lights. All

exterior lighting is DC-powered and controlled from the front cockpit ONLY (with the exception

of the landing gear external position indicators, which are activated by the landing gear system).

Landing Lights

The left and right landing lights, located on the main landing gear struts, are individually

operated by two circuit breaker type switches labeled LANDING LIGHTS, LEFT/RIGHT, ON

and OFF, located directly below the landing gear handle on the left subpanel of the front cockpit

ONLY.

ELECTRICAL SUBSYSTEMS

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