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Dash 8 > Flight Controls > Flashcards

Flight Controls Flashcards

1
Q

1 RUD HYD

A

Indicates a loss of pressure at #1 rudder hydraulic actuator

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2
Q

RUD PRESS

A

Failure of rudder pressure regulator to reduce to 900psi above 140KTS (150KTS) OR Failure of rudder pressure regulator to increase to 1500PSI below 140KTS (150KTS) OR System pressure is 3000PSI and airspeed exceeds 140KTS (150KTS)

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3
Q

RUD FULL PRESS

A

Either rudder actuator is receiving 3000PSI above 140KTS (150KTS)

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4
Q

What does illumination of a RUDDER PUSH OFF SWITCH LIGHT indicate

A

A jam in the #1 or #2 actuator linkage

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5
Q

How does the STBY ELEV TRIM switch work

A

Guard is lifted which transfers control of pitch trim from AP to STDBY ELEVATOR TRIM SWITCHES

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6
Q

What does the SPLR 1 light indicate

A

Indicates a jam in the inboard roll spoiler. The SPLR 2 light is for the outboard spoiler

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7
Q

ROLL SPLR INBD HYD

A

Indicates a loss of hydraulic pressure in the related roll spoiler circuit

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8
Q

What flight controls does the Pilots wheel control

A

Spoilers

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9
Q

What flight controls does the Co-Pilots wheel control

A

Ailerons

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10
Q

FLAP DRIVE

A

Failure of the Primary shaft. Flaps continue to operate using the secondary shaft

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11
Q

FLAP POWER

A

Loss of hydraulic power to FPU.

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12
Q

At what pressure will the FLAP POWER light come on

A

Less than 1500PSI

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13
Q

When exposed to wind gusts what is the maximum speed of the gusts before an inspection is required

A

61KTS

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14
Q

What degree of travel is allowed through the Nose Steering tiller

A

60 degrees either side

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15
Q

What degree of travel is allowed with only rudder pedals

A

16 degrees LEFT and 18 degrees RIGHT

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16
Q

How much can the rudder trim displace the rudder

A

10 degrees either side

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17
Q

How is the rudder connected

A

Fore rudder is hinged to the vertical stabiliser and is moved by both actuators. Trailing rudder geometrically geared to fore rudder (twice the deflection)

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18
Q

What controls hydraulic pressure with respect to the rudder

A

Pressure to each actuator is controlled by a Pressure Regulator that is connected to a Summing Unit upstream.

19
Q

What signals does the rudder pressure regulator use

A

Speed signals from the ADCs

20
Q

Other than a predetermined speed, how is the caution light RUD PRESS activated

A

There are pressure switches that are armed by the ADC speed signals in each actuators supply line

21
Q

What does pushing an illuminated PUSH OFF RUD 1 switch do

A

Depressurises the affected hydraulic actuator

22
Q

When is maximum fore rudder travel allowed

A

At flap settings of 15 and 35 degrees

23
Q

A mechanical rudder travel restrictor limits fore rudder travel to ____ with flaps at ____ degrees

A

12 degrees, 0 degrees

24
Q

Can the AP be engaged without the YD

A

No

25
Q

How much authority over the rudder does the YD have

A

5 degrees

26
Q

Can the YD be engaged without the AP

A

Yes

27
Q

Which side controls the Left Elevator

A

Pilots side

28
Q

How do the Elevators function

A

Each elevator has a torsion spring which drives the elevator surface in conjunction with a spring tab which reduces control forces

29
Q

What provides Elevator Trim

A

Tabs on each surface outboard of the spring tabs. Driven by a Trim wheel in the cockpit

30
Q

How does the Elevator trim work

A

Movement of the wheel sends a signal to the AP Trim Servo which moves the elevator

31
Q

How are the Spoilers controlled

A

Cable activated and hydraulically powered

32
Q

What are Aileron Tabs and how do they work

A

They are geared tabs on the trailing edge of each aileron that assist aileron deflection. The tabs are geared to move in the opposite direction (create a localised lifting force) to the aileron to assist in movement of the aileron

33
Q

How is Aileron Trim achieved

A

Through an electric actuator built into the right Aileron trim tab

34
Q

How do the Spoilers work

A

They respond differentially to control wheel movement

35
Q

Above ____KTS the _____ spoilers are inhibited

A

140KTS (150KTS), outboard

36
Q

If a roll spoiler jam occurs during a turn and the ROLL DISC handle is pulled, this may result in a partially extended spoiler. If the resultant counteracting aileron input is more than ____ the ____ switch light will illuminate

A

50 degrees, SPLR

37
Q

What is the maximum roll spoiler displacement with the ROLL DISC handle pulled

A

75 degrees

38
Q

What type of Wing Flaps are fitted to the DHC-8

A

Single slotted fowler flaps

39
Q

How are the flaps extended and retracted

A

A primary drive system which is actuated by a hydraulically powered Flap Power Unit (FPU) extends and retracts in response to flap selections

40
Q

Sensors in the flap selector provide flap selection to ____, ____ and ____

A

Landing Gear warning system, GPWS and AP lift computer

41
Q

How does the FPU work

A
  1. Trigger is raised on the flap selector 2. Solenoid shutoff valve opens and admits hydraulic pressure to the FPU. 3. Valve remains open for 70 secs to allow FPU time to position flaps 4. A control valve is positioned by flap selector 5. Hydraulic motor (#1 system) in FPU rotates primary shaft through a gearbox 6. Travel limiting mechanism halts flap movement when desired position is attained
42
Q

Why would FLAP POWER caution light illuminate

A

Less than 1500PSI detected by a pressure sensor which is armed by the opening of the solenoid shutoff valve

43
Q

How many shafts drive the flaps

A

2, a primary and a secondary

Dash 8 (7 decks)

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