Q400 > Flight Controls > Flashcards

Flight Controls Flashcards

(100 cards)

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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
Spoilers operate from control inputs of?
Capts control column
26
Ailerons operate from whos control column?
FOs
27
What does the geared tab do?
Provides aerodynamic assistance in aileron movement
28
The right aileron has an extra tab for?
Ground tab adjusted by engineers to trim out any aerodynamic asymmetry
29
What does the control lock actually lock?
The ailerons into a neutral position
30
Spoiler modes of operation?
Flight Ground Taxi
31
Spoiler system deactivate/ reactivate outboard spoiler as airspeed…?
Deactivated as airspeed increases through 170kts And reactivated as airspeed decreases through 165kts
32
Ground mode spoiler operation used for?
Dumping the wings, for more effective WOW and max braking efficiency
33
Selecting the TAXI switch for the spoilers does what?
After landing retracts all spoiler panels
34
SPLR 1 or 2 switch light illuminated
A spoiler linkage jam and the affected spoiler clutch has disengaged
35
Once pushing off the SPLR 1 or 2 switch light what happens?
The affected hydraulic system depressurised allowing the spoilers to retract
36
Pressing the SPLR1 or 2 switch light results in which caution lights?
ROLL SPLR INBD HYD or ROLL SPLR OUTBD HYD
37
After using the roll disconnect handle how do you know what was jammed?
Capt has roll control mean aileron jam FO has control means spoiler jam
38
ROLL SPLR INBD HYD caution light
#1 HYDRAULIC PRESSURE LOST OR SPLR 1 SWITCHLIGHT HAS BEEN PUSHED
39
ROLL SPLR OUTBD HYD caution light
#2 HYDRAULIC PRESSURE LOST, AIRSPEED IS < 165 KNOTS, OR SPLR 2 SWITCHLIGHT HAS BEEN PUSHED
40
SPLR OUTBD Caution light?
#2 HYDRAULIC PRESSURE LOST AND NON-HYDRAULIC FAILURES HAVE OCCURED
41
SPLR OUTBD caution light illuminates
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
ROLL SPLR INBD GND / OUTBD GND caution lights
Illuminate after 5 seconds if lift dump valve fail to be in agreement on the ground
43
Once in TAXI mode for spoilers and a spoiler remains extended what caution light will illuminate?
ROLL SPLR INBD or OTBD GND
44
When taking off if the spoilers don’t retract what will happen?
Take off warning horn and ROLL SPLR INDB /OUTBD GND
45
How are the forward and trailing rudder joined?
By push rods
46
Rudder deflection?
Flaps 0 12 degrees either side of centre Flaps 5 or more 18 degrees
47
Rudder trim knob has two positions for what?
First mark is slow trim rate Second mark is fast trim rate
48
How much rudder authority does the yaw damper have?
4.5 degrees either side of centre
49
RUD 1 switch light illuminated means?
An input jam in the lower rudder PCU
50
RUD 2 switchlight illuminated means?
An input jam in the upper rudder PCU
51
When RUD 1 or RUD 2 switch light is illuminated what happens if you push it?
It depressurises the affected PCU and the OFF light will then only be illuminated
52
After pushing the RUD 1 or RUD 2 switch light that was illuminated what caution light will occur? And why?
#1 or 2 RUD HYD illuminates to indicate the associated system is depressurised
53
RUD CTRL caution light?
• FCECU DUAL CHANNEL FAILURE • DUAL HYDRAULIC SYSTEM FAILURE • SIGNIFICANT AIRSPEED DISAGREEMENT
54
With RUD CTRL caution light illuminated what is the max airspeed?
200KIAS
55
#1 or 2 RUD HYD caution light?
Loss of HYD pressure to rudder PCU
56
Flap type?
Each wing has two single slotted Fowler flaps
57
What is the flap power unit (FPU)?
Hydraulic motor that uses rotary motion to drive the flap shafts
58
VFE flap 5, 10, 15 and 35?
200 181 172 158
59
Flap position displayed?
PSA on MFD 2
60
FCU does what?
Monitors and controls the flaps
61
What does the FCU activate when the flaps are moved out of the 0 position?
Activate the standby hydraulic pump and PTU
62
What holds flaps in deflected position?
Mechanical locking of the flap actuators
63
FLAP POWER caution light?
If during flap extension or retraction the flaps fail. They will lock in the last position
64
FLAP DRIVE caution light?
Indicates a fault in a flap system, the flaps will still move with reduced performance. System will auto reset if fault condition clears
65
What parameters does the stick shaker use to determine an approaching stall?
• ANGLE OF ATTACK • FLAP POSITION • MACH NUMBER • ENGINE TORQUE SETTINGS • REF SPEEDS SWITCH POSITION
66
What parameters does the stick pusher use to determine an approaching stall?
• ANGLE OF ATTACK • FLAP POSITION • MACH NUMBER • POWER LEVER ANGLES • CONDITION LEVER ANGLES • REF SPEEDS SWITCH POSITION
67
SPS is operational when?
Below 215kts airspeed, stick pusher shut off switch light is not selected off and RADALT above 200ft
68
#1 or 2 STALL SYST FAIL and PUSHER SYST FAIL caution lights?
Failure if the AOA vanes heating element which causes the SPS to inhibit the use of the AOA inputs
69
Stick pusher force needed to manually override it?
36kg for the 15seconds and 30kg during the dwell It pushes for 15seconds then 1 min break
70
Stick pusher shut off switch light does what?
Turns off the stick pusher
71
PUSHER SYST FAIL caution light?
Illuminates when the stick pusher switch light is pressed to shut off
72
What does the INCR REF SPEEDS switch do? And why?
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
Non critical SPS malfunctions are displayed how?
30 seconds after landing the #1 or 2 STALL SYST FAIL caution light will illuminate
74
# 1 or 2 STALL SYST FAIL and PUSHER SYST FAIL caution light
Malfunction that prevents a stick shaker activation or stick pusher from operating
75
Elevator feel is provided to both control columns by ?
Two pitch feel actuators
76
Illumination of the RUD CTRL caution light can be triggered by an airspeed mismatch of at least ?
17 KIAS
77
The aircraft is equipped with ? (Flaps)
Single slotted fowler flaps
78
The outboard roll spoilers are powered by ?
#2 hydraulic system
79
The Yaw Damper (YD) ?
Disengaging results in the autopilot also disengaging
80
Illumination of the FLAP DRIVE caution light indicates ?
A fault has occurred, however the flaps may continue to operate with reduced performance
81
Illumination of the OFF segment in the ELEVATOR TRIM SHUT OFF switchlights indicates ?
The elevator trim has been shut off
82
Which of the following caution lights illuminate when there is a significant airspeed mismatch?
ELEVATOR FEEL, PITCH TRIM, RUD CTRL, SPLR OUTBD
83
Retention of flap position is by ?
Mechanical locking of the flap actuators
84
Illumination of the RUD CTRL caution light may indicate ?
A dual channel FCECU failure
85
Aileron trim position indications can be found ?
On the aileron trim control panel on the centre console
86
How many Power Control Units (PCUs) are attached to each of the elevators?
Three
87
When the Yaw Damper (YD) is engaged indications are provided ?
On the Flight Guidance Control Panel (FGCP)
88
When the roll disconnect handle is pulled the co-pilot's control wheel controls ?
The ailerons
89
Positioning the SPOILERS switch to TAXI after landing ?
Retracts the spoilers
90
The Yaw Damper (YD) maximum rudder authority immediately after take-off is ?
25% maximum rudder deflection
91
Full rudder deflection on the PFCS is indicated by ?
A solid white block
92
The SPOILERS switch automatically springs to the FLIGHT position when ?
When both power levers are advanced forward of FLT IDLE plus 12 degrees
93
Flap movement occurs when the flap selector lever ?
Reaches a new flap selection gate
94
A rudder input restrictor mechanism restricts the maximum angle of rudder deflection while flaps are set to ?
0 degrees
95
Outboard roll spoilers are reactivated when decelerating through ?
165 KIAS
96
The control lock on the power quadrant locks the ?
Ailerons
97
Advisory lights for the flight control system can be found on ?
The glareshield
98
Illumination of the PUSH OFF annunciator in the ELEVATOR TRIM SHUT OFF switchlights may indicate ?
Manual elevator trim has been in motion for more than 3 seconds
99
Illumination of the OFF segment of the SPLR 1 PUSH OFF switchlight indicates ?
The PUSH OFF switchlight has been pressed
100
The autofeather system is disarmed ?
When autofeather is deselected
Q400
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