TM 1-1520-238-T-6
9–93
9–7.
SYSTEM DESCRIPTION (cont)
9–7
PILOT CENTER CIRCUIT
BREAKER PANEL
28 VDC
LT
SRCH / LDG
CB22
M69-362
SEARCH LIGHT
RELAY
LANDING / SEARCH
LIGHT
LT
SRCH / LDG
CONTR
CB80
28 VDC
SEARCH LIGHT CONTROL
SEARCH / LANDING
LIGHT RELAY
28 VDC
28 VDC
PILOT
MATRIX MODULE
CPG
COLLECTIVE STICK
PILOT
COLLECTIVE STICK
SEARCH LIGHT CONTROL
SEARCH LIGHT CONTROL
(AAQ)
(AAQ)
Figure 9–86.
Landing/Search Light Functional Block Diagram
(10) Pilot Utility and Secondary Lights.
The pilot and CPG utility and secondary lights (fig. 9–87) and
CPG utility and secondary lights provide emergency lighting in the event of instrument lighting failure. LT UTIL
SEC circuit breaker (CB23), on the pilot’s center circuit breaker panel, supplies 28 VDC from the emergency bus
to the pilot utility light and the pilot EXT LT/INTR LT panel. The pilot EXT LT/INTR LT panel controls the operation
of the seven secondary lights installed under the pilot’s glareshield. EMERG BATT UTIL SEC LT circuit breaker
(CB30), on the CPG’s circuit breaker panel 1, supplies 28 VDC from the emergency bus to the CPG utility light
and the CPG INTR LT panel. The CPG INTR LT panel controls the operation of seven secondary lights installed
under the CPG’s glareshield. Operation of the pilot’s and CPG’s panels are controlled by the respective FLOOD
switch. When the switch is positioned to BRT, the blue-green secondary lights are set to the highest brightness
level. When the switch is positioned to DIM, the blue-green secondary lights are set to the lowest brightness level.
The utility light provides emergency red or white lighting in case of instrument panel lighting failure. The light is
operated by an integral OFF/BRT rheostat switch. Rotating the front part of the light selects red or white lighting.
