Electroluminescent Panel. Three panels which
form an equilateral triangle are aft of the forward pylon.
Two panels are on top of the aft pylon aft of the anticolli-
sion light. Power to operate and control the electrolumi-
nescent formation lights is supplied by the LIGHTING
FORM circuit breaker on the No. 1 PDP.
NVG Formation Lights. There is an NVG forma-
tion light on each side of the forward pylon, two NVG
formation lights on each side of the fuselage, two NVG
formation lights on the aft pylon, one aft of the anticolli-
sion light, and one on the vertical panel at the rear of the
aft pylon. Power to operate and control the NVG forma-
tion lights is supplied by the No. 1 DC bus through the
LIGHTING NVG FORM circuit breaker on the No. 1 PDP.
2-13-4. FORM Light Switches.
The FORM (formation) light select and control switches
are located on the EXT LTG panel on the left side of the
overhead switch panel (fig. 2-1-10).
FORM Light Select Switch. A two-position toggle
switch labeled NVG and NORM. In the NORM position,
the five electroluminescent panels may be controlled by
the FORM light rotary control switch for normal night
formation operations. In the NVG position, the eight NVG
formation lights may be controlled by the FORM light
rotary control switch for the NVG night formation opera-
FORM Light Control Switch. A rotary control
switch labeled OFF, DIM, and BRT with three evenly
spaced incremental markings between DIM and BRT. It
adjusts the intensity of the formation lights selected by
the FORM light select switch. When the rotary control
switch is OFF, the formation light system is deenergized.
2-13-5. Anticollision Lights.
Two red strobe anticollision lights are on the helicopter (3
and 7, fig. 2-13-1). One is on top of the aft pylon and the
other is on the fuselage underside. Power to operate the
anticollision lights is supplied by the No. 2 DC bus
through the LIGHTING ANTI COL TOP and BOT circuit
breakers on the No. 2 PDP.
2-13-6. ANTI COL Light Switches.
Two ANTI COL TOP and BOT toggle switches are on the
EXT LTG panel on the left side of the overhead switch
panel (fig. 2-1-10). Each two-position switch is labeled
OFF and ON. When the anticollision light switch is ON,
the lights are energized. When the switch is placed to
OFF, the anticollision lights are deenergized.
Two controllable searchlights are mounted on the bottom of
the fuselage (8, fig. 2-13-1). One is controlled from the pilot
THRUST CONT lever and the other from the copilot
THRUST CONT lever. One seachlight, either pilot or copilot
is equipped with an infrared (IR) filter for NVG operations.
Each light is operated independently by a SRCHLT
CONTR switch, SLT-FIL (searchlight filament), and posi-
tion switch. They may be extended and stopped at any
angle up to 90_ in a vertical plane and rotated 360_ about
its vertical axis as long as the searchlight position switch
2-13-7. SRCHLT CONTR Switch.
Two SRCHLT CONTR (searchlight control) switches are
on the overhead switch panel (fig. 2-13-2). The PLT
SRCHLT CONTR switch is on the PLT LTG panel. The
CPLT SRCHLT CONTR switch is on the CPLT LTG pan-
el. each two-position switch is labeled RET and ON.
When the SRCHLT CONTR switch is placed to ON, the
STL-FIL switch on the THRUST CONTR lever becomes
operational. If the searchlight is at any angle off center
when the SRCHLT CONTR switch is placed to RET, the
searchlight will automatically rotate to point forward and
then will retract flush with the fuselage. Power is supplied
by the No. 1 and No. 2 DC bus through the LIGHTING SLT
CONT circuit breakers on the No.1 and No. 2 PDP.
2-13-8. SLT-FIL Switch.
The IR searchlight emits invisible infrared
rays which may be hazardous to person-
nel looking directly at the light at close
range or touching it. Ensure that the IR
SLT-FIL switch is OFF and the light fully
retracted when it is not in use.
A SLT-FIL (searchlight filament) switch is located on the pilot
and copilot THRUST CONT lever switch bracket (fig. 2-5-1.)
Each switch is labeled ON and OFF. The switches turn on
the landing-searchlight lamp, before or after extension. Pow-
er to operate the landing searchlight lamp is supplied by the
No. 1 and No. 2 DC bus through the LIGHTING SLT FIL
circuit breakers on the No. 1 and No. 2 PDP.
2-13-9. SEARCH LIGHT Position Switch.
Do not confuse the SEARCH LIGHT posi-
tion switch with the two engines beep trim
A five-position momentary SEARCH LIGHT switch is on
each THRUST CONTR. lever switch bracket (fig. 2-5-1). It
is labeled L (left), EXTEND, R (right), and RETRACT. The
switch is spring-loaded to center off position.
When the SRCHLT CONTR and SLT-FIL switches are ON,
the searchlight can be controlled up and down or left and
right with the SEARCH LIGHT position switch. Power to
operate the searchlight position switch is supplied by the No.
1 and No. 2 DC bus through the LIGHTING SLT CONT
circuit breaker on the No. 1 and No. 2 PDP.