TM 55-1520-240-23-7
9-125
MISCELLANEOUS EQUIPMENT
9-125
Miscellaneous equipment includes all electrical
equipment not covered under the ac and dc power
and control system, and lighting. Following is a list of
miscellaneous equipment.
a.
Electrical console
b.
Overhead panel
c.
Master caution panel
d.
Hoist operators panel
e.
Winch control grip
f.
Thrust control grips
g.
Pitch and roll control grips
h.
Emergency hook release relay box
i.
Dual cargo hook release box
j.
APU electronic control unit (ECU)
k.
Power steering control box
l.
Three-phase utility receptacles
m.
High density terminal junctions
n.
Maintenance panel
ELECTRICAL CONSOLE
The electrical console is divided into two sections,
located between the pilot’s seats. The center console
and canted console contain various panel-mounted
assemblies and 25 internally mounted electrical
components such as relays, transformers, and resistors.
The canted console supports the center instrument
panel. Most of the panel-mounted assemblies are
connected to helicopter wiring through connectors. The
engine trim panel components (helicopters without 74 ),
are connected directly to helicopter wiring.
OVERHEAD PANEL
The overhead panel is in the overhead above the
electrical console. It includes front-mounted panels,
utility lights, terminal boards, and rear mounted panels
for resistors and relays. The overhead panel pivots
down for maintenance. Downward travel of the panel
is limited by two cloth straps. Each strap is connected
between the side of the panel and an overhead
structure. Front-mounted ENGINE CONDITION control,
EMERGENCY POWER panel (helicopters without 74 ),
FADEC panel (helicopters with 74 ), and HOIST/CARGO
HOOK panel are connected to the overhead panel wiring
through connectors. The other front-mounted panels
and rear-mounted components are hard-wired to other
components of the overhead panel.
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