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Q400 > Flight Controls > Flashcards

Flight Controls Flashcards

1
Q

What are primary flight controls?

A

Rudder
Elevator
Airlerons

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2
Q

What are secondary flight controls?

A

Flaps

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3
Q

What are PFCS?

A

Primary flight controls that use hydraulic power incl rudder, spoilers and elevators

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4
Q

Where is the PFCS displayed?

A

MFD 1

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5
Q

What is the FCECU?

A

Flight control electronic control unit

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6
Q

How many elevators?

A

Two attached to each control column and under normal conditions they are linked. If there is a jam they can be disconnected

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7
Q

What are the elevators controlled by and powered by?

A

Mechanically controlled and hydraulically powered

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8
Q

The elevators hydraulic power redundancies for each PCU are?

A

3 power control units for each elevator, and each is supplied by a different source. Either #1 (outboard PCU) or 2 (centre PCU) or 3 (inboard) hydraulic system

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9
Q

What system provides power for the control lock on the ground?

A

Number 3 system

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10
Q

ELEVATOR PRESS caution light illuminates when?

A

All 3 hydraulic systems are simultaneously powered

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11
Q

Does the number 3 system automatically become used if the number 1 and or 2 HYD system is lost?

A

Yes

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12
Q

What do centring springs do?

A

Help return the elevator control surfaces to the neutral position

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13
Q

Elevator trim rates?

A

<150 kts high speed trim mode
>250kts low speed trim mode

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14
Q

What happens if there is a pitch trim command for more than 3 secs?

A

Clicking sound and illuminated the ELEVATOR TRIM SHUTOFF switch lights on glareshield

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15
Q

When does the Flap auto pitch trim system operate?

A

Flaps extend or retracted from 15 to 35

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16
Q

For flap auto pitch trim to operate what conditions must exist?

A

Flaps between 15 and 35
AP not engaged
IAS <180kts
Pitch trim switches not pushed

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17
Q

ELEVATOR ASYMMETRY caution light

A

Mismatch between left and right elevator
>185kts over 4degrees difference
<185kts over 6 degrees difference

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18
Q

ELEVATOR FEEL caution light?

A

• FCECU LOSS OF PITCH TRIM ACTUATOR CONTROL
• ACCELERATION DATA MISMATCH
• AIRSPEED MISMATCH ABOVE 17 KNOTS

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19
Q

What caution lights must you not exceed 200kts when illuminated?

A

ELEVATOR ASYMMETRY and ELEVATOR FEEL

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20
Q

Airspeed 1 & 2 mismatch >17kts causes what caution lights?

A

ELEVATOR FEEL
PITCH TRIM
RUD CTRL
SPLR OUTBD

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21
Q

PITCH TRIM caution light?

A

• FCECU LOSS OF PITCH TRIM ACTUATOR CONTROL
• TRIM INPUT COMMANDS DISAGREE
• AIRSPEED MISMATCH ABOVE 17 KNOTS

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22
Q

Roll control achieved by?

A

Airlerons (1 per wing) and spoilers (two per wing)

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23
Q

How are the Ailerons controlled?

A

Mechanically operated using control cables

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24
Q

How are the spoilers controlled and powdered?

A

Mechanically controlled and hydraulically powered

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25
Q

Spoilers operate from control inputs of?

A

Capts control column

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26
Q

Ailerons operate from whos control column?

A

FOs

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27
Q

What does the geared tab do?

A

Provides aerodynamic assistance in aileron movement

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28
Q

The right aileron has an extra tab for?

A

Ground tab adjusted by engineers to trim out any aerodynamic asymmetry

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29
Q

What does the control lock actually lock?

A

The ailerons into a neutral position

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30
Q

Spoiler modes of operation?

A

Flight
Ground
Taxi

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31
Q

Spoiler system deactivate/ reactivate outboard spoiler as airspeed…?

A

Deactivated as airspeed increases through 170kts
And reactivated as airspeed decreases through 165kts

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32
Q

Ground mode spoiler operation used for?

A

Dumping the wings, for more effective WOW and max braking efficiency

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33
Q

Selecting the TAXI switch for the spoilers does what?

A

After landing retracts all spoiler panels

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34
Q

SPLR 1 or 2 switch light illuminated

A

A spoiler linkage jam and the affected spoiler clutch has disengaged

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35
Q

Once pushing off the SPLR 1 or 2 switch light what happens?

A

The affected hydraulic system depressurised allowing the spoilers to retract

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36
Q

Pressing the SPLR1 or 2 switch light results in which caution lights?

A

ROLL SPLR INBD HYD or ROLL SPLR OUTBD HYD

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37
Q

After using the roll disconnect handle how do you know what was jammed?

A

Capt has roll control mean aileron jam
FO has control means spoiler jam

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38
Q

ROLL SPLR INBD HYD caution light

A

1 HYDRAULIC PRESSURE LOST OR

SPLR 1 SWITCHLIGHT HAS BEEN PUSHED

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39
Q

ROLL SPLR OUTBD HYD caution light

A

2 HYDRAULIC PRESSURE LOST, AIRSPEED IS < 165 KNOTS, OR SPLR 2 SWITCHLIGHT HAS BEEN PUSHED

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40
Q

SPLR OUTBD Caution light?

A

2 HYDRAULIC PRESSURE LOST AND

NON-HYDRAULIC FAILURES HAVE OCCURED

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41
Q

SPLR OUTBD caution light illuminates

A

If the outboard spoilers do not deactivate at an airspeed greater than 185 KIAS, or the spoilers do not reactivate when the airspeed is less than 150KIAS,

42
Q

ROLL SPLR INBD GND / OUTBD GND caution lights

A

Illuminate after 5 seconds if lift dump valve fail to be in agreement on the ground

43
Q

Once in TAXI mode for spoilers and a spoiler remains extended what caution light will illuminate?

A

ROLL SPLR INBD or OTBD GND

44
Q

When taking off if the spoilers don’t retract what will happen?

A

Take off warning horn and ROLL SPLR INDB /OUTBD GND

45
Q

How are the forward and trailing rudder joined?

A

By push rods

46
Q

Rudder deflection?

A

Flaps 0 12 degrees either side of centre
Flaps 5 or more 18 degrees

47
Q

Rudder trim knob has two positions for what?

A

First mark is slow trim rate
Second mark is fast trim rate

48
Q

How much rudder authority does the yaw damper have?

A

4.5 degrees either side of centre

49
Q

RUD 1 switch light illuminated means?

A

An input jam in the lower rudder PCU

50
Q

RUD 2 switchlight illuminated means?

A

An input jam in the upper rudder PCU

51
Q

When RUD 1 or RUD 2 switch light is illuminated what happens if you push it?

A

It depressurises the affected PCU and the OFF light will then only be illuminated

52
Q

After pushing the RUD 1 or RUD 2 switch light that was illuminated what caution light will occur? And why?

A

1 or 2 RUD HYD illuminates to indicate the associated system is depressurised

53
Q

RUD CTRL caution light?

A

• FCECU DUAL CHANNEL FAILURE
• DUAL HYDRAULIC SYSTEM FAILURE
• SIGNIFICANT AIRSPEED DISAGREEMENT

54
Q

With RUD CTRL caution light illuminated what is the max airspeed?

A

200KIAS

55
Q

1 or 2 RUD HYD caution light?

A

Loss of HYD pressure to rudder PCU

56
Q

Flap type?

A

Each wing has two single slotted Fowler flaps

57
Q

What is the flap power unit (FPU)?

A

Hydraulic motor that uses rotary motion to drive the flap shafts

58
Q

VFE flap 5, 10, 15 and 35?

A

200
181
172
158

59
Q

Flap position displayed?

A

PSA on MFD 2

60
Q

FCU does what?

A

Monitors and controls the flaps

61
Q

What does the FCU activate when the flaps are moved out of the 0 position?

A

Activate the standby hydraulic pump and PTU

62
Q

What holds flaps in deflected position?

A

Mechanical locking of the flap actuators

63
Q

FLAP POWER caution light?

A

If during flap extension or retraction the flaps fail. They will lock in the last position

64
Q

FLAP DRIVE caution light?

A

Indicates a fault in a flap system, the flaps will still move with reduced performance. System will auto reset if fault condition clears

65
Q

What parameters does the stick shaker use to determine an approaching stall?

A

• ANGLE OF ATTACK
• FLAP POSITION
• MACH NUMBER
• ENGINE TORQUE SETTINGS
• REF SPEEDS SWITCH POSITION

66
Q

What parameters does the stick pusher use to determine an approaching stall?

A

• ANGLE OF ATTACK
• FLAP POSITION
• MACH NUMBER
• POWER LEVER ANGLES
• CONDITION LEVER ANGLES
• REF SPEEDS SWITCH POSITION

67
Q

SPS is operational when?

A

Below 215kts airspeed, stick pusher shut off switch light is not selected off and RADALT above 200ft

68
Q

1 or 2 STALL SYST FAIL and PUSHER SYST FAIL caution lights?

A

Failure if the AOA vanes heating element which causes the SPS to inhibit the use of the AOA inputs

69
Q

Stick pusher force needed to manually override it?

A

36kg for the 15seconds and 30kg during the dwell

It pushes for 15seconds then 1 min break

70
Q

Stick pusher shut off switch light does what?

A

Turns off the stick pusher

71
Q

PUSHER SYST FAIL caution light?

A

Illuminates when the stick pusher switch light is pressed to shut off

72
Q

What does the INCR REF SPEEDS switch do? And why?

A

When set to INCR changes the stall parameters and sets it to a lower AOA because when in icing conditions the lift supplied by the wings can be decreased causing the aircraft to stall at a lower AOA.

73
Q

Non critical SPS malfunctions are displayed how?

A

30 seconds after landing the #1 or 2 STALL SYST FAIL caution light will illuminate

74
Q

1 or 2 STALL SYST FAIL and PUSHER SYST FAIL caution light

A

Malfunction that prevents a stick shaker activation or stick pusher from operating

75
Q

Elevator feel is provided to both control columns by ?

A

Two pitch feel actuators

76
Q

Illumination of the RUD CTRL caution light can be triggered by an airspeed mismatch of at least ?

A

17 KIAS

77
Q

The aircraft is equipped with ? (Flaps)

A

Single slotted fowler flaps

78
Q

The outboard roll spoilers are powered by ?

A

2 hydraulic system

79
Q

The Yaw Damper (YD) ?

A

Disengaging results in the autopilot also disengaging

80
Q

Illumination of the FLAP DRIVE caution light indicates ?

A

A fault has occurred, however the flaps may continue to operate with reduced performance

81
Q

Illumination of the OFF segment in the ELEVATOR TRIM SHUT OFF switchlights indicates ?

A

The elevator trim has been shut off

82
Q

Which of the following caution lights illuminate when there is a significant airspeed mismatch?

A

ELEVATOR FEEL, PITCH TRIM, RUD CTRL, SPLR OUTBD

83
Q

Retention of flap position is by ?

A

Mechanical locking of the flap actuators

84
Q

Illumination of the RUD CTRL caution light may indicate ?

A

A dual channel FCECU failure

85
Q

Aileron trim position indications can be found ?

A

On the aileron trim control panel on the centre console

86
Q

How many Power Control Units (PCUs) are attached to each of the elevators?

A

Three

87
Q

When the Yaw Damper (YD) is engaged indications are provided ?

A

On the Flight Guidance Control Panel (FGCP)

88
Q

When the roll disconnect handle is pulled the co-pilot’s control wheel controls ?

A

The ailerons

89
Q

Positioning the SPOILERS switch to TAXI after landing ?

A

Retracts the spoilers

90
Q

The Yaw Damper (YD) maximum rudder authority immediately after take-off is ?

A

25% maximum rudder deflection

91
Q

Full rudder deflection on the PFCS is indicated by ?

A

A solid white block

92
Q

The SPOILERS switch automatically springs to the FLIGHT position when ?

A

When both power levers are advanced forward of FLT IDLE plus 12 degrees

93
Q

Flap movement occurs when the flap selector lever ?

A

Reaches a new flap selection gate

94
Q

A rudder input restrictor mechanism restricts the maximum angle of rudder deflection while flaps are set to ?

A

0 degrees

95
Q

Outboard roll spoilers are reactivated when decelerating through ?

A

165 KIAS

96
Q

The control lock on the power quadrant locks the ?

A

Ailerons

97
Q

Advisory lights for the flight control system can be found on ?

A

The glareshield

98
Q

Illumination of the PUSH OFF annunciator in the ELEVATOR TRIM SHUT OFF switchlights may indicate ?

A

Manual elevator trim has been in motion for more than 3 seconds

99
Q

Illumination of the OFF segment of the SPLR 1 PUSH OFF switchlight indicates ?

A

The PUSH OFF switchlight has been pressed

100
Q

The autofeather system is disarmed ?

A

When autofeather is deselected

Q400 (33 decks)

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