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yupi-s-TiSiTi. > Flight Controls > Flashcards

Flight Controls Flashcards

1
Q

Of the 6 spoiler panels on each wing, which are used for roll control?

A

5 outboard panels

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2
Q

Which elevator positions are displayed by the surface position indicator on the secondary EICAS display?

A

Left and right outboard elevators

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3
Q

The control wheel has two stab trim switches located next to each other. What happens if only one of the two switches is moved?

A

Both switches must be moved together to operate stab trim

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4
Q

What controls trailing edge flap asymmetry?

A

Flap control unit (FCU)

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5
Q

On the -400, FCU’s operate in what two control modes?

A

Primary and secondary

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6
Q

On the -400, flap loading relief is not available in what modes?

A

Secondary and alternate modes

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7
Q

Which is true concerning Autopilot Trim?

A

The right autopilot uses the hydraulic system 2 stab trim control module. The left autopilot uses the hydraulic system 3 stab trim control module.

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8
Q

What happens if control wheel trim switches are moved with multiple autopilots engaged?

A

Nothing, the switches are inhibited

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9
Q

If a control column is moved opposite to stab trim motion?

A

Trim commands will be cut off to the stab trim control modules

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10
Q

Horizontal stabilizer trim can be controlled by?

A

ALTN stab trim switches and control wheel stab trim switches

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11
Q

Control column inputs act mechanically on which elevator actuators?

A

Inboard elevators only, which provide input to the outboard elevators

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12
Q

In the Primary mode, which flap groups move when Flaps 1 is selected?

A

Mid and inboard leading edge flaps fully extend

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13
Q

The position of which spoiler panels are displayed by the surface position indicator on the secondary engine EICAS display?

A

Fourth spoiler panel in from the left wingtip, outboard on the right wing.

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14
Q

How are the trailing edge flaps powered in the secondary mode?

A

Electrics

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15
Q

How are the leading edge flaps powered in the primary mode?

A

Pneumatics

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16
Q

What happens if the Rudder Ratio Changer fails?

A

At high airspeeds, excess rudder deflection may be available. At low airspeeds, full rudder deflection may not be available.

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17
Q

On landing, if the speed brake lever is not ARMED, when will Ground Spoilers deploy?

A
  • Main gear touchdown,
  • Thrust lever 1 and 3 near idle and
  • Thrust Reversers 2 or 4 deployed
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18
Q

On landing if the Speed Brake Lever is ARMED, when will Ground Spoilers automatically deploy?

A
  • Thrust levers 1 and 3 near idle, and
  • Main Gear touchdown
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19
Q

How is the autopilot affected by the use of control wheel or alternate stab trim?

A

Alternate stab trim use overrides autopilot trim without causing disengagement

20
Q

Asymmetry protection is available in which flap modes?

A

Primary and secondary

21
Q

Of the 6 spoiler panels on each wing, which are used as ground spoilers?

A

All 6 panels

22
Q

Of the 6 spoiler panels on each wing, which function as speed brakes in flight?

A

4 inboard panels

23
Q

What does the FMC use to determine the appropriate green band for takeoff trim?

A

Gross weight, CG, and Takeoff thrust setting

24
Q

What happens when any flap group fails to move to the commanded position while the FCU is in the primary mode?

A

The FCU’s switch to secondary mode driving the flap group through electric motors

25
Q

In what modes do the leading and trailing edge flaps function?

A

Primary, Secondary, alternate modes

26
Q

When any flap position is non-normal or if flap control is in the secondary mode, all flap positions are displayed on the EICAS display. What does an amber crosshatch indicate when the EICAS is displaying secondary flap indications?

A

Drive unit is inoperative with flap group partially extended or flap panel failure has occurred.

27
Q

Flap load relief is available for flaps 25 and 30 in which flap modes?

A

Primary

28
Q

Inboard trailing edge flaps are normally powered by which hydraulic systems?

A

1 Hyd

29
Q

Outboard trailing edge flaps are normally powered by which hydraulic systems?

A

4 Hyd

30
Q

If a rudder ratio changer system fails, what may not be available at low airspeed?

A

Full rudder deflection

31
Q

If one autopilot is engaged and the control wheel stab trim switches are activated what will happen to the autopilot?

A

The autopilot will disengage

32
Q

If the alternate stab trim switches are activated with any number of autopilots engaged what happens to the autopilot trim commands?

A

Alternate stab trim will override autopilot trim commands

33
Q

Which is true concerning alternate stab trim?

A

Provides trim commands to the trim control modules through separate control channels

34
Q

How are the trailing edge and leading edge flaps powered in the secondary and alternate modes?

A

Electric

35
Q

With a loss of hydraulic system 4 which spoiler panels will not operate?

A

The inboard 2 on each wing

36
Q

What is the maximum extension position of the trailing edge flaps in the alternate control mode?

A

Flaps 25

37
Q

If the speedbrake lever is in the DOWN position with the main gear on the ground, when will the ground spoilers deploy?

A

Thrust levers 1 and 3 near the closed position, TR’s 2 or 4 to the idle detent

38
Q

With the speedbrake lever in the ARMED position and main gear touchdown when will the ground spoilers deploy?

A

Thrust levers 1 and 3 near the closed position

39
Q

How are the leading edge flaps powered in the primary mode?

A

Pneumatic

40
Q

The upper and lower yaw damper actuators are powered by which hydraulic systems?

A

Hyd #2 and #3

41
Q

In the alternate mode how is flap extension sequences?

A

All leading edge and trailing edge flaps extend immediately

42
Q

With the stab trim cutout switches in CUTOUT, is trim available in any other mode to the stab trim modules?

A

No, all hyd power is removed from the trim control modules

43
Q

Which control modes have trailing edge flap asymmetry protection

A

Primary and secondary

44
Q

Which thrust levers when advanced from closed position will drive the speedbrake lever to the DOWN position with the main gear on the ground?

A

Thrust levers 1 and 3

45
Q

Why Center Autopilot is usually selected?

A

Right AP controls only RH module of Stabilizer (sys2)
And Left AP controls only LH module (sys3).
While CENTER autopilot can control any of the two modules via relay.
Therefore the Center AP will have a redundancy in controlling the Stabilizer Trim

46
Q

Outboard Ailerons lockout speeds are?

A
  • Locks at 238 Knots
  • Unlocks at 232 Knots
47
Q

Which spoilers panels are displayed on Secondary EICAS ?

A
  • 4 (left side)
    -12 (right side)

obs: when speedbrakes are deployed inflight only Panel 4 will be displayed

yupi-s-TiSiTi. (24 decks)

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