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Commander 695A > Hydraulics > Flashcards

Hydraulics Flashcards

1
Q

Maximum Hydraulic System Pressure

A

1,400psi

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2
Q

Hydraulically Controlled Systems

A

Landing Gear
Flap
Brakes
Nosewheel Steering

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3
Q

Landing Gear Emergency Nitrogen System Pressure

A

425 - 525psi

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4
Q

Landing Gear Emergency Extension Speed

A

100KIAS

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5
Q

Landing Gear Emergency Extension Procedure

A

Nosewheel Begins Transit on Loss of Pressure, with Bungees
Reduce to 100KIAS / Flight Idle
Select Landing Gear Down (Drains Pressure from Main Gear Uplocks to allow springs to unlock

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6
Q

Landing Gear Emergency Extension Time

A

Up to 2 - 3 Minutes

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7
Q

Hydraulic System Components

A

Installed in Left Engine Nacelle:
Hydraulic Fluid Reservoir
Pressure Relief Valve (Return Line, Bottom of Reservoir)
Shutoff Valves
Accumulator-Regulator
Auxiliary Hydraulic System Pump and Pressure Switch
Engine Driven Hydraulic Pumps (Fitted to Each Engine)

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8
Q

Normal Hydraulic System Pressure

A

900 - 1075psi

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9
Q

Auxiliary Hydraulic System Operating Pressure

A

470-605psi

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10
Q

Auxiliary Hydraulic System Powered Systems

A

Flaps
Brakes
Nosewheel Steering
Parking Brake

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11
Q

Accumulator-Regulator Function

A

Pressure Adjuster Valve Controls Unloader Valve
Unloader Valve Bypasses to Reservoir when >1075psi
Unloader Valve Allows Pressure to System when 1250(+/-0-50)psi

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12
Q

Auxiliary Hydraulic Pump Operation

A

Activated When System Pressure 605psi

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13
Q

Auxiliary Hydraulic System Supply Level

A

1 Quart (Trapped Below Reservoir Standpipe

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Commander 695A (11 decks)

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