•Hydraulically-boosted main rotor flight controls eliminate feedback forces at the cyclic and collective

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•The hydraulic system consists of a pump, three servos, a reservoir, and interconnecting lines

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•The pump is mounted on and driven by the main rotor gearbox so that hydraulic pressure is maintained in the event of an engine failure

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• A servo is connected to each of the three push-pull tubes that support the main rotor swash plate.

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•The reservoir is mounted on the steel tube frame behind the main rotor gearbox and includes a filter, pressure relief valve, and pilot-controlled pressure shut-off valve

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•A sight glass for pre-flight fluid level checks is incorporated in the reservoir and accessible through the right side upper cowl door

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•A vented filler cap is located on top of the reservoir

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