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Flight Manual Section 1: Description > 1.11 Flight Controls > Flashcards

1.11 Flight Controls Flashcards

1
Q

What are the primary flight controls for the PC-21?

A
  • Ailerons
  • Roll spoilers
  • Elevator
  • Rudder
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2
Q

What are the secondary flight controls of the PC-21?

A
  • Flaps

- Airbrake

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3
Q

What controls have trimming systems?

A
  • Elevator
  • Aileron
  • Rudder
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4
Q

What does the gust control lock do?

A

Prevents the ailerons, elevator and rudder from moving when the aircraft is parked on the ground.

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5
Q

How can hydraulic power to the aileron and roll spoiler actuators be isolated?

A

By selecting the TRIM AIL PWR switch to OFF

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6
Q

What cautions come on when the TRIM AIL PWR off switch comes on?

A

SERVO and SKID cautions

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7
Q

What does the artificial feel unit for lateral movement of the control column?

A

It is provided to Centre the column and gives increasing resistance to movement when the control column is deflected laterally.

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8
Q

Does each aileron have a balance tab? Are they functional at the moment on RAAF PC-21 aircraft?

A

Yes

No

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9
Q

Are the elevators supplemented by hydraulic power?

A

No, they are controlled just through a system of push pull rods, cranks and cables.

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10
Q

Are the two elevators connected? By what?

A

Yes by a torque tube

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11
Q

What happens if one elevator is damanged?

A

The torque tube will shear, disconnecting the damaged surface and enabling the undamaged elevator to operate normally.

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12
Q

What does the bob weight do?

A

Reduces the control force required to pull high g maneuvers

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13
Q

What do the balance trim tabs do on each elevator?

A

When the elevator trim tab moves, the balance trim tab moves in the opposite direction. This decreases aerodynamic moment about its hinges and reduces force required to deflect the elevator.

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14
Q

Does the rudder have hydraulic augmentation?

A

No it s a conventional manually-operated rudder.

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15
Q

If opposing trim selections are made simultaneously in the front and rear cockpits, what happens?

A

The associated trim actuator will stop until one or bother trimmers are released.

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16
Q

What can the pilot do if there is an uncontrolled runaway of a flight control?

A

The pilot can select the TRIM/AIL PWR switched to inhibit the trim functions.

17
Q

What do the green indications mean on the TTI?

A

Take-off position for the trims.

18
Q

What supplies power to the trim systems?

A

BATT BUS

19
Q

What does the TAD do?

A

Provides automatic rudder trim to compensate for aircraft yawing conditions resulting from changes in engine torque and AOA

20
Q

What does the TAD do on the ground?

A

It commands the rudder to a fixed TO position (7.5 deg nose right) in order to counteract the effects of prop slipstream and engine toque left yaw effects during TO roll.

21
Q

Does the TAD eliminate the need of the pilot to manually control yaw on TO and in dynamic flight maneuvers?

A

No

22
Q

How is the TAD powered?

A

GEN 1 BUS

23
Q

How can the TAD be switched off?

A
  • By pressing the TAD button OR

- Selecting TRIM AIL PWR switch to OFF

24
Q

How are the secondary flight controls controlled and powered?

A

Electrically controlled and hydraulically powered.

25
Q

How type of flaps are on the PC-21?

A

Single slotted Fowler Flaps

26
Q

If the main hydraulic system fails, how can the pilot select the flaps to down?

A

By pulling the EMER LDG GR handle and then selecting the flap position

27
Q

After pulling the EMER LDG GR handle, and the flaps have been selected to TO or LDG, can they be retracted?

A

No

28
Q

If electrical power from the BATT, GEN 1 and GEN 2 busses fail fail, what will happen to the flaps?

A

They will automatically retract and the pilot will be unable to extend the flaps.

29
Q

If the main hydraulic system fails, can the airbrake be extended or retracted?

A

No it can’t be extended or retracted.

30
Q

What powers the airbrake?

A

GEN 2 BUS

31
Q

What counteracts the nose up pitch moment caused by the extension of the airbrake?

A

A pitch compensation system which automatically commands the elevator trim to move to counteract the pitch up moment.

32
Q

If a hollow white circle appears in flap position on MFD, what does that mean?

A

Flaps are in transition

33
Q

What does a solid yellow circle in flap position mean on MFD?

A

Flap has malfunctioned.

Flight Manual Section 1: Description (11 decks)

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