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Flexjet Praetor 500 > Hydraulics > Flashcards

Hydraulics Flashcards

1
Q

How many hydraulic systems are there?

A

Three. AOM 9-11-01

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2
Q

What nominal pressure do all three hydraulic systems operate at?

A

3000 psi. AOM 9-11-01

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3
Q

What MFD page provides a visual representation of the hydraulic system operation and parameters?

A

The hydraulic synoptic page. AOM 9-11-30

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4
Q

At what pressure is an amber tick mark placed at on the pressure indication for all three systems on the hydraulic synoptic page?

A

1800 psi. AOM 9-11-30

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5
Q

What color is the symbol for shutoff valves that are open, engine driven pumps that are on and hydraulic flow
lines that are pressurized?

A

Green. AOM 9-11-30

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6
Q

Will a failure of two hydraulic systems result in a complete loss of flight-critical functions?

A

No, due to system design. AOM 9-11-50

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7
Q

What is hydraulic system 1 comprised of?

A

One reservoir, one engine driven pump (EDP1), one electrical DC motor pump (DCMP1), one shutoff valve
(SOV 1) and on accumulator. AOM 9-11-50

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8
Q

When will the DCMP 1 be automatically commanded on with the HYD 1 ELEC PUMP knob in the AUTO
position?

A

During takeoff and landing phases. AOM 9-11-50

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9
Q

What is hydraulic system 2 comprised of?

A

One reservoir, one engine driven pump (EDP 2), one shut off valve (SOV 2) and one accumulator. AOM 9-11-
50

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10
Q

What is hydraulic system 3 comprised of?

A

One reservoir, one electrical DC motor pump (DCMP 2) and one accumulator. AOM 9-11-50

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11
Q

Hydraulic system 3 is designed to operate in conjunction with what electrical system (s)?

A

The battery and the ram air turbine (RAT). AOM 9-11-50

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12
Q

What is the only source of hydraulic power for hydraulic system 3?

A

The electric DCMP 3. AOM 9-11-50

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13
Q

What is the source of electrical power for the electric DCMP 3 (hydraulic system 3)?

A

EMER BUS 3. AOM 9-11-50

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14
Q

If the airplane loses any 2 of the 3 hydraulic systems due to overheat, will the overheat protection system still be functional on the remaining system?

A

No, it will be inhibited. AOM 9-11-50

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15
Q

What is the backup for hydraulic systems 1 and 2?

A

The PTU. AOM 9-11-50

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16
Q

What is the primary function of the PTU?

A

To transfer power from hydraulic system 1 to system 2 or vice versa. AOM 9-11-50

17
Q

When the PTU knob is in the AUTO position, when will the LGHCU’s automatically activate the PTU?

A

In the event of an engine failure or EDP failure. AOM 9-11-50

Flexjet Praetor 500 (25 decks)

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