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Ground School > Prefect Tech > Flashcards

Prefect Tech Flashcards

1
Q

Which lights are outboard on the wing tips?

A

Anti-Coll and Nav lights.

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2
Q

Which lights are are forward facing on the wing tips?

A

Taxi and Landing lights.

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3
Q

What power supplies does the Prefect have?

A

GPU, Battery and Generator.

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4
Q

What Voltage is the GPU?

A

28.0V

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5
Q

What Voltage is the Battery?

A

24.0V

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6
Q

What amperage is the Battery?

A

28 Ah (28 amps for one hour, 56 Amps for two hours etc…)

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7
Q

What voltage should the generator generate?

A

28.0V

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8
Q

What amperage is the generator?

A

200 Amps (Max continuous). (6KW).

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9
Q

Which component has the biggest draw?

A

Intake Heat (Approx 70A).

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10
Q

Where is the Battery?

A

Right hand side of the engine compartment.

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11
Q

What other function does the Generator carry out?

A

Starter motor.

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12
Q

How many Bus Bars are there?

A

5

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13
Q

What are the Bus Bars?

A 
Hot Battery Bus.
Battery Bus.
Main Bus.
Avionics Bus 1.
Avionics Bus 2.
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14
Q

How does the military classify Bus Bars?

A

Essential.
Non-Essential.
Vital (Emergency).

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15
Q

What does the Bus Tie Contact do?

A

Links Main Bus to Battery Bus. (Links Non-essential to Essential).

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16
Q

How does the “BLOW” function on the starter motor work?

A

Turns compressors and turbines without using combustion.

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17
Q

What is the Landing Gear lever powered by?

A

Battery Bus.

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18
Q

What does the figure on a CB indicate?

A

The Amp that the CB will trip at.

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19
Q

Why is GPU use preferred?

A

Reduces wear on the A/C Batt.

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20
Q

Why is the PL reduced to GI when removing Ext Power?

A

To reduce back wash, so ground crew don’t get blown away.

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21
Q

Why is the PL kept in FI when on the ground?

A

To remove exhaust gases from underneath the A/C to prevent damage.

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22
Q

At what Main Bus Voltage will the “VOLT” caption appear?

A

MAIN Bus voltage above 29V.

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23
Q

At what MAIN or BATT voltage will the “VOLT” caption appear?

A

Below 25V?

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24
Q

What colour light is on the left?

A

Red.

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25
Q

What colour light is on the right?

A

Green.

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26
Q

Which light is of the highest intensity, Taxi or Landing light?

A

Landing light.

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27
Q

What lights are on during flight?

A

All of them.

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28
Q

Why must you warn the Ground crew before turning the Batt on?

A

As the Elec logic circuit will flash the landing light.

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29
Q

What is the capacity of the LH collector tank?

A

16.8kg

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30
Q

What is the Total Usable Fuel?

A

275.0kg

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31
Q

What Fuel Type (preferred) does the Prefect use?

A

AVTUR with FSII

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32
Q

How do you select fuel from only the RH tank?

A

Fuel Selector to EMERGENCY TRANSFER.

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33
Q

How long does the Fuel Transfer pump run for in “TIMER”?

A

2 minutes.

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34
Q

How much Fuel does the Fuel Transfer Pump transfer during the 2 min “TIMER”?

A

11kg.

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35
Q

At 120Kts, what is the average fuel consumption?

A

60KGH

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36
Q

At 180Kts, what is the average fuel consumption?

A

90KGH

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37
Q

What method do the Fuel Jet Pumps use to keep the LH Collector Tank full?

A

Motive Flow.

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38
Q

Is there a gauge for the LH Collector Tank?

A

Nope.

39
Q

What effect does Motive Flow take advantage of?

A

Venturi.

40
Q

What do the Naca Ducts do?

A

Provide positive pressure to the wing tanks.

41
Q

Where is the Fuel System?

A

Left hand side of Engine Compartment.

42
Q

What is the Total Fuel Capacicty?

A

282.7 KG

43
Q

What is the Unusable fuel in the left wing?

A

6.3kg

44
Q

What is the unusable fuel in the right wing?

A

1.4kg

45
Q

What is the Max Fuel tank Asymmetry?

A

45.3kg

46
Q

What is the Max Fuel in each tank for Aeros?

A

115kg

47
Q

What is the STBY FUEL PUMP always selected to?

A

AUTO.

48
Q

Why are you not allowed to do Aeros when in “EMERGENCY TRANSFER”?

A

As the RH Tank only has a fixed fuel collector tube.

49
Q

If the “F LOW LEVEL” caption comes on. Where will you have low fuel? And at what fuel quantity will the caption come on?

A

In the Collector Tank at a Fuel Quantity <8.4kg.

50
Q

When will the “F PRESS” caption come on?

A

When there is a POSSIBLE malfunction with the fuel supply.

OR when the Fuel low pressure is <12psi.

51
Q

At a fuel pressure of <12psi, what will automatically turn on?

A

STBY FUEL PUMP.

52
Q

When will the “F TRANS FAIL” caption come on?

A

Transfer pump fails.
Transfer pressure drops below 2psi.
When the Optical Sensor in the LH tank is triggered (when LH tank is full).

53
Q

What is the Prefect Engine?

A

Rolls-Royce (M250-B17F) Turbo Prop. 450SHP.

54
Q

What might careless PL control lead to?

A

Over-Torquing and/or Over-Temping of the engine.

55
Q

What must you never do with the Fuel Pump CBs?

A

Reset them.

56
Q

At what N1 is the engine self-sustaining?

A

~60%

57
Q

What type of propellor does the Prefect use?

A

Five blade constant speed. 2.10m in diameter.

58
Q

What RPM is the max governed RPM?

A

2130 rpm

59
Q

Approximately, what RPM is 100% N1?

A

66,000 rpm

60
Q

What component does the Oil system lubricate?

A

Bearings.

61
Q

What does the PL control?

A

Regulates the amount of fuel being delivered to engine.

62
Q

From what N1 does the PL control the engine?

A

58% N1.

63
Q

What is affected when the PL is moved to the Beta range?

A

Prop pitch is changed to reverse thrust. (The further into the Beta range, the more fuel is introduced).

64
Q

What does the CL control?

A

Governs engine datum RPM. e.g. when selected to “HIGH”, prop is governed to 2130 rpm.
Feathers/unfeathers the prop.
Enables fuel “ON” during start and “OFF” for shutdown.
Enables ignition during start.
Blade angle.

65
Q

What N2 do you set for the PROP OVERSPEED GOVERNOR check?

A

1800-1850 rpm.

66
Q

What is the recommended oil capacity?

A

7-9L.

67
Q

For the INTAKE HEAT TEST, what Amp draw should you expect to see?

A

70 amps.

68
Q

Is the BLEED AIR valve ON/OFF or a regulated valve?

A

Regulated.

69
Q

What is the CL connected to?

A

A control rod connects CL to prop governor (mounted on prop reduction gearbox).

70
Q

What does FRP mean?

A

Flat Rated Power.

71
Q

What changes when the PL is moved forward of FRP?

A

Blade pitch becomes coarser.

72
Q

What are the N1 starting speeds, with OAT, for moving CL to HIGH during engine start?

A

> +7 degrees -> 15% N1
-18 to + 7 Degrees -> 13% N1
12% N1

73
Q

What are the three categories of Malfunctions?

A

WARNINGS. (Red).
CAUTIONS. (Yellow).
ADVISORIES. (Blue).

74
Q

At what Engine oil psi will the caption “LOW OIL PRESSURE” appear?

A

<35 psi

75
Q

Which compressor supplies air to the BLEED AIR/ANTI-ICE?

A

Centrifugal.

76
Q

What does the Hydraulic System operate?

A

Only the gear.

77
Q

How does the Prefect steer on the ground?

A

Diff braking and nose wheel steering.

78
Q

Where is the Hydraulic System in the prefect?

A

Behind the baggage compartment (Rear bulkhead) on the left.

79
Q

What psi does the Hydraulic System operate at?

A

2,000 psi.

80
Q

What are the two emergency accumulators (for the hydraulic system) charged with?

A

Nitrogen.

81
Q

What does the Emergency Landing Gear Extend knob operate?

A

A cable that pulls the uplocks to release, and opens the two emergency accumulators. Which applies pressure to all 3 gears.

82
Q

What lights show when the gear is locked down?

A

3 greens.

83
Q

What lights show when the gear is moving and/or unlocked?

A

3 reds.

84
Q

What lights show when the gear is up and locked?

A

No lights.

85
Q

What lights show when the gear is up and locked?

A

No lights.

86
Q

What Bus Bar feeds the landing gear handle?

A

Battery Bus.

87
Q

What is the power rating of the starter/generator?

A

6 KW at 28 V DC (corresponds to 200 A continuous load through the speed range).

88
Q

Where is the VHF COM 1 aerial located?

A

Underside of A/C (Obtuse V looking Aerial).

89
Q

Where is the VHF COM 2 aerial located?

A

Front of Vertical stabiliser.

90
Q

Where is the VOR Aerial 1 and VOR Aerial 2 located?

A

Either side of the vertical stabiliser.

91
Q

Where is the UHF antenna located?

A

Underside of A/C (underneath baggage compartment.

92
Q

What does a Red “X” over a label on the Radio page mean?

A

There has been no communication from a device for two seconds or more.

93
Q

What three sources does the navigation system receive data from?

A

Magnetic sensor units. ADAHRS. Antennas.

94
Q

Which transponder mode allows you to change FLT ID?

A

STBY.

Ground School (3 decks)

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