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CL-65 Study Guide > Flight Controls > Flashcards

Flight Controls Flashcards

1
Q

How are control surfaces actuated?

A

Hydraulically or electrically

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2
Q

Primary flight controls:

A

elevator
rudder
ailerons

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3
Q

Which controls are equipped with control disconnects?

A

elevator & ailerons

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4
Q

Which control has an anti-jam mechanism?

A

rudder

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5
Q

In the event of total electrical failure, which hydraulic pump is powered by the ADG?

A

3B

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6
Q

What unit moves the ailerons?

A

PCU’s

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7
Q

Are ailerons & MFS’s operated by the opposite yoke?

A

Yes

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8
Q

How many PCU’s per aileron?

A

2

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9
Q

SSCU’s

A

Spoiler Stabilizer Control Units

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10
Q

What are the flutter dampers for in flight?

A

Prevent aileron flutter when all hydraulic fluid is lost to the PCU

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11
Q

What are the flutter dampers for on the ground?

A

Gust lock function

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12
Q

Does pulling the ROLL DISC allow all ailerons & MFS’s to be available to one yoke control?

A

Yes

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13
Q

Selecting the ROLL SEL switch button on the glareshield allows the flying pilot to have control over the other:

A

spoileron

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14
Q

If the bungee breakout switch is actuated, what control is now available to the flying pilot?
Should the ROLL DISC handle still be pulled?

A

MFS’s

Yes

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15
Q

What provides rudder gust lock?

A

Trapped hydraulic fluid

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16
Q

How many yaw damper systems?

A

2

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17
Q

Is the yaw damper independent of the autopilot system?

A

Yes

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18
Q

FCC’s

A

Flight Control Computers

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19
Q

If both yaw dampers fail, does the autopilot disengage?

A

Yes

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20
Q

CA operates the ___ elevator:

FO operates the ___ elevator:

A

Left

Right

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21
Q

What happens if the PITCH DISC handle is pulled?

A

Reduced pitch control (1 elevator only)

22
Q

Secondary Flight Controls:

A 
slats
flaps
MFS's
GLD devices
aileron, rudder, horizontal stabilizer trim
23
Q

How are the slats/flaps & trim actuated?

A

electrically

24
Q

How are the flight/ground spoilers actuated?

A

hydraulically

25
Q

Will changing aileron trim deflect the controls?

A

Yes

26
Q

Will changing rudder trim deflect the controls?

A

No

27
Q

Horizontal Stabilizer Trim AOI range?

A

+2 / -13 degrees

28
Q

Where are the PITCH TRIM DISC switches located?

A

On each pilot’s control wheel

29
Q

AFCS

A

Autopilot Flight Control System

30
Q

SFECU

A

Slat/Flap Electronic Control Unit

31
Q

How many slats?

How many flaps?

A

3 per wing

2 per wing

32
Q

Which yoke connected to left aileron?

Right aileron?

A

Captain

FO

33
Q

How are ailerons, elevators, & rudder actuated?

A

Yoke & pedals operate system of cables/pulleys that connect to push/pull rods at the flight control which operate a hydraulic PCU (power control unit) that hydraulically actuates control surfaces

34
Q

What is purpose of MFS’s?

A

To assist with roll control & serve as a spoiler in flight/on landing

35
Q

What is the flight deck indication of a jammed aileron cable?

A

Both yokes will be jammed

36
Q

What happens after the ROLL DISC handle is pulled?

A

Aileron cable/pulley systems disconnected through torque tubes.
20 seconds later, if operable side has not been selected amber ROL SEL switchlight illuminates.

37
Q

How is operable side selected?

A

Pushing the ROL SEL/PLT ROL switchlight on the unjammed side

38
Q

What does pushing the ROL SEL/PLT ROL switchlight accomplish?

A

Allows pilot with operable aileron to control opposite side MFS’s

39
Q

What is the flight deck indication of an aileron PCU runaway?

A

Aircraft begins uncommanded roll & PLT SEL switchlight on side w/o PCU runaway illuminates automatically because of the bungee break-out signal

40
Q

What is occurring when pilots trim ailerons or rudder?

A

Control surface being repositioned. There are no trim tabs

41
Q

What panels are part of the GND LIFT dumping system?

A

Inboard & outboard ground spoilers, all 4 MFS’s

42
Q

How are flight controls gust locked?

A

Hydraulic fluid trapped during shutdown

43
Q

How is Yaw Damper engaged?

A

YD1 & YD2 engage switchlights on the center pedestal

44
Q

How is Yaw Damper disengaged?

A

DISC button on center pedestal

45
Q

What controls yaw damper?

A

FCC

46
Q

Is it necessary to disconnect yaw damper on landing?

A

No

47
Q

How are flaps operated?

A

Electrically

48
Q

How many flap segments does CRJ have?

A

4, 2 on each wing

49
Q

Is there any asymmetrical protection within the flaps?

A

Yes, if flap segments differ by >5 degrees, brakes applied & flaps remain at current position

50
Q

How is STAB TRIM operated?

A

Electrically.

Split switch on control yoke operates 2 motors & jackscrew changing horizontal stabilizer AOI

51
Q

What systems can operate STAB TRIM?

A

CA trim switch
FO trim switch
Autopilot
MACK trim

52
Q

What is priority of STAB TRIM control?

A

CA
FO
Autopilot
MACH trim

CL-65 Study Guide (18 decks)

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