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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
What colour light is on the right?
Green.
26
Which light is of the highest intensity, Taxi or Landing light?
Landing light.
27
What lights are on during flight?
All of them.
28
Why must you warn the Ground crew before turning the Batt on?
As the Elec logic circuit will flash the landing light.
29
What is the capacity of the LH collector tank?
16.8kg
30
What is the Total Usable Fuel?
275.0kg
31
What Fuel Type (preferred) does the Prefect use?
AVTUR with FSII
32
How do you select fuel from only the RH tank?
Fuel Selector to EMERGENCY TRANSFER.
33
How long does the Fuel Transfer pump run for in "TIMER"?
2 minutes.
34
How much Fuel does the Fuel Transfer Pump transfer during the 2 min "TIMER"?
11kg.
35
At 120Kts, what is the average fuel consumption?
60KGH
36
At 180Kts, what is the average fuel consumption?
90KGH
37
What method do the Fuel Jet Pumps use to keep the LH Collector Tank full?
Motive Flow.
38
Is there a gauge for the LH Collector Tank?
Nope.
39
What effect does Motive Flow take advantage of?
Venturi.
40
What do the Naca Ducts do?
Provide positive pressure to the wing tanks.
41
Where is the Fuel System?
Left hand side of Engine Compartment.
42
What is the Total Fuel Capacicty?
282.7 KG
43
What is the Unusable fuel in the left wing?
6.3kg
44
What is the unusable fuel in the right wing?
1.4kg
45
What is the Max Fuel tank Asymmetry?
45.3kg
46
What is the Max Fuel in each tank for Aeros?
115kg
47
What is the STBY FUEL PUMP always selected to?
AUTO.
48
Why are you not allowed to do Aeros when in "EMERGENCY TRANSFER"?
As the RH Tank only has a fixed fuel collector tube.
49
If the "F LOW LEVEL" caption comes on. Where will you have low fuel? And at what fuel quantity will the caption come on?
In the Collector Tank at a Fuel Quantity <8.4kg.
50
When will the "F PRESS" caption come on?
When there is a POSSIBLE malfunction with the fuel supply. | OR when the Fuel low pressure is <12psi.
51
At a fuel pressure of <12psi, what will automatically turn on?
STBY FUEL PUMP.
52
When will the "F TRANS FAIL" caption come on?
Transfer pump fails. Transfer pressure drops below 2psi. When the Optical Sensor in the LH tank is triggered (when LH tank is full).
53
What is the Prefect Engine?
Rolls-Royce (M250-B17F) Turbo Prop. 450SHP.
54
What might careless PL control lead to?
Over-Torquing and/or Over-Temping of the engine.
55
What must you never do with the Fuel Pump CBs?
Reset them.
56
At what N1 is the engine self-sustaining?
~60%
57
What type of propellor does the Prefect use?
Five blade constant speed. 2.10m in diameter.
58
What RPM is the max governed RPM?
2130 rpm
59
Approximately, what RPM is 100% N1?
66,000 rpm
60
What component does the Oil system lubricate?
Bearings.
61
What does the PL control?
Regulates the amount of fuel being delivered to engine.
62
From what N1 does the PL control the engine?
58% N1.
63
What is affected when the PL is moved to the Beta range?
Prop pitch is changed to reverse thrust. (The further into the Beta range, the more fuel is introduced).
64
What does the CL control?
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
What N2 do you set for the PROP OVERSPEED GOVERNOR check?
1800-1850 rpm.
66
What is the recommended oil capacity?
7-9L.
67
For the INTAKE HEAT TEST, what Amp draw should you expect to see?
70 amps.
68
Is the BLEED AIR valve ON/OFF or a regulated valve?
Regulated.
69
What is the CL connected to?
A control rod connects CL to prop governor (mounted on prop reduction gearbox).
70
What does FRP mean?
Flat Rated Power.
71
What changes when the PL is moved forward of FRP?
Blade pitch becomes coarser.
72
What are the N1 starting speeds, with OAT, for moving CL to HIGH during engine start?
>+7 degrees -> 15% N1 -18 to + 7 Degrees -> 13% N1 12% N1
73
What are the three categories of Malfunctions?
WARNINGS. (Red). CAUTIONS. (Yellow). ADVISORIES. (Blue).
74
At what Engine oil psi will the caption "LOW OIL PRESSURE" appear?
<35 psi
75
Which compressor supplies air to the BLEED AIR/ANTI-ICE?
Centrifugal.
76
What does the Hydraulic System operate?
Only the gear.
77
How does the Prefect steer on the ground?
Diff braking and nose wheel steering.
78
Where is the Hydraulic System in the prefect?
Behind the baggage compartment (Rear bulkhead) on the left.
79
What psi does the Hydraulic System operate at?
2,000 psi.
80
What are the two emergency accumulators (for the hydraulic system) charged with?
Nitrogen.
81
What does the Emergency Landing Gear Extend knob operate?
A cable that pulls the uplocks to release, and opens the two emergency accumulators. Which applies pressure to all 3 gears.
82
What lights show when the gear is locked down?
3 greens.
83
What lights show when the gear is moving and/or unlocked?
3 reds.
84
What lights show when the gear is up and locked?
No lights.
85
What lights show when the gear is up and locked?
No lights.
86
What Bus Bar feeds the landing gear handle?
Battery Bus.
87
What is the power rating of the starter/generator?
6 KW at 28 V DC (corresponds to 200 A continuous load through the speed range).
88
Where is the VHF COM 1 aerial located?
Underside of A/C (Obtuse V looking Aerial).
89
Where is the VHF COM 2 aerial located?
Front of Vertical stabiliser.
90
Where is the VOR Aerial 1 and VOR Aerial 2 located?
Either side of the vertical stabiliser.
91
Where is the UHF antenna located?
Underside of A/C (underneath baggage compartment.
92
What does a Red "X" over a label on the Radio page mean?
There has been no communication from a device for two seconds or more.
93
What three sources does the navigation system receive data from?
Magnetic sensor units. ADAHRS. Antennas.
94
Which transponder mode allows you to change FLT ID?
STBY.

Ground School (3 decks)

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