Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Dash 8 Q400 MILM > Flight Controls > Flashcards

Flight Controls Flashcards

1
Q

Name the Powered Flight Control Surfaces (PFCS)

A

elevators, spoilers, rudder

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the FCECU?

A

Flight Control Electronic Control Unit, located under the passenger floor, single electronic unit divided into two channels which send electrical outputs to primary and secondary flight control systems, flight data recording systems, advisory systems, and caution indicating systems

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the FCECU powered by?

A

left channel - left essential DC bus

right channel - right essential DC bus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

How is the elevator controlled and powered?

A

mechanically controlled by two fully independent cable and pulley control circuits (left control column controls left elevator, right control column controls right elevator), hydraulically powered by three identical Power Control Units (PCUs)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Which elevator PCUs are powered by which hydraulic system?

A

outboard - hyd system 1
center - hyd system 2
inboard - hyd system 3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What prevents an elevator PCU runaway?

A

input bungees

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What prevents damage to the elevator control circuit in the event of a PCU jam?

A

two overload bungees installed in the horizontal stabilizer, one in each elevator circuit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What provides gust lock protection and elevator flutter suppression?

A

elevator PCU compensator installed in the return line of the No. 3 hydraulic system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What provides elevator artificial feel and pitch trim inputs?

A

two identical Pitch Feel and Trim Units (PFTUs) located in the upper section of the vertical stabilizer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

ELEVATOR PRESS caution light

A

all 3 hydraulic systems are supplying pressure to elevator

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

ELEVATOR ASYMMETRY caution light

A

position mismatch between the left and right elevator control surfaces

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

ELEVATOR FEEL caution light

A

one of the FCECU channels is not able to control the pitch trim actuator

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

PITCH TRIM caution light

A

one of the FCECU channels is not able to control its related pitch trim actuator or Pilot and Copilot pitch trim input commands are different

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

How is the rudder controlled and powered?

A

mechanically controlled by rudder pedals which are connected by an interconnect rod, hydraulically powered by 2 PCUs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

How is artificial feel for the rudder provided?

A

mechanical feel spring unit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What rudder PCUs are powered by which hydraulic system?

A

lower PCU - hydraulic system 1

upper PCU - hydraulic system 2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Deflection of rudder sections

A

full deflection, aft section - 36 degrees
full deflection, fore section - 18 degrees
flap 0 limited, aft section - 24 degrees
flap 0 limited, fore section - 12 degrees

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is rudder deflection limited by?

A

regulated by FCECU in response to airspeed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What does the Rudder Feel/Trim and Summing Unit do?

A

provides artificial feedback forces on rudder pedals and sums rudder trim and yaw damper inputs and then commands a single input to the rudder PCUs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

RUD 1 switchlight

A

mechanical jam in lower rudder PCU, depressurizes PCU when pushed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

RUD 2 switchlight

A

mechanical jam in upper rudder PCU, depressurizes PCU when pushed

22
Q

1 RUD HYD caution light

A

hydraulic pressure to the No. 1 rudder actuator less than 500 psi +/- 50 psi

23
Q

RUD CTRL caution light

A

no hydraulic pressure to the rudder actuators

24
Q

ROLL SPLR OTBD GND caution light

A

FCECU can’t control the outboard spoiler lift-dump operation or the outboard spoilers do not extend at touchdown or the outboard spoilers extend after the TAXI mode selection after touchdown

25
Q

SPLR OUTBD caution light

A

FCECU has failed to inhibit at greater than 170 KIAS or has failed to re-enable below 165 KIAS

26
Q

ROLL SPLR OUTBD HYD caution light

A

No. 2 hydraulic system pressure is less than 900 psi

27
Q

2 RUD HYD caution light

A

hydraulic pressure to the No. 2 rudder actuator less than 500 psi +/- 50 psi

28
Q

FLAP DRIVE caution light

A

flap drive system malfunction

29
Q

FLAP POWER caution light

A

low hydraulic pressure in flap power unit during flap extension or retraction

30
Q

ROLL SPLR INBD GND caution light

A

FCECU can’t control the inboard spoiler lift-dump operation or the inboard spoilers do not extend at touchdown or the inboard spoilers extend after the TAXI mode selection after touchdown

31
Q

ROLL SPLR INBD HYD caution light

A

no hydraulic pressure to the inboard roll spoiler actuators

32
Q

How are the ailerons controlled and operated?

A

mechanically via the co-pilot’s control wheel

33
Q

What do the aileron geared tabs do?

A

move in the opposite direction of the aileron to reduce control force

34
Q

Where is the ground adjustable trim tab located?

A

right aileron

35
Q

How does the aileron trim work?

A

an Aileron Trim and Centering Unit (ATCU) transfers trim input commands from the aileron trim actuator to the aileron forward quadrant, the forward quadrant rotates and deflects both aileron control surfaces

36
Q

What happens during an aileron trim runaway?

A

a travel limit switch automatically shuts off electrical power to the trim actuator causing it to stop at the maximum trim input, if the limit switch fails a mechanical stop on the trim actuator will stop it at the maximum trim setting

37
Q

What are the three modes of spoiler operation?

A

flight mode, ground mode, taxi mode

38
Q

What hydraulic systems powers which spoilers?

A

inboard - 1 hydraulic system

outboard - 2 hydraulic system

39
Q

At what speed are the outboard spoilers deactivated?

A

above 170 KIAS

40
Q

SPLR 1 switchlight

A

PCU linkage jam and spoiler clutch disengagement, pushing button shuts off extension pressure to inboard spoiler PCUs

41
Q

SPLR 2 switchlight

A

PCU linkage jam and spoiler clutch disengagement, pushing button shuts off extension pressure to outboard spoiler PCUs

42
Q

Type of flaps

A

single-slotted inboard and outboard fowler flaps

43
Q

How are the flaps operated?

A

flaps are connected to screw jacks which are operated by a drive shaft, a hydromechanical Flap Power Unit (FPU) is electrically activated by the Flap Control Unit (FCU), the FPU converts hydraulic power to rotary mechanical power

44
Q

What hydraulic system provides power to the Flap Power Unit?

A

No. 1

45
Q

The Stall Protection System operates when these conditions are met:

A

CAS less than 215 its
altitude more than 200 ft agl
stick pusher SHUT OFF switchlight not OFF

46
Q

What does the REF SPEEDS INCR switch do?

A

sets the stall-operating angle for stick shaker activation and stick pusher activation to a relatively lower angle of attack

47
Q

1 STALL SYST FAIL caution light

A

no. 1 stall warning system malfunction or no vane heater current is detected

48
Q

2 STALL SYST FAIL caution light

A

no. 2 stall warning system malfunction or no vane heater current is detected

49
Q

PUSHER SYST FAIL caution light

A

stick pusher malfunction or no vane heater current is detected

50
Q

How much force is required to override the stick pusher?

A

80 pounds

Dash 8 Q400 MILM (17 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions