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DL 7ER > Flight Controls > Flashcards

Flight Controls Flashcards

0
Q

What is the impact of using alternate trim during autopilot operation?

A

Alternate trim does not cause autopilot disengagement.

UNSCHED STAB TRIM light illuminates.

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1
Q

What is the impact of using electric trim on the control wheel during autopilot operation?

A

Single autopilot use- autopilot will disengage

Multi autopilot use- autopilot will not disengage. Electric trim switches are inhibited during multiple autopilot use.

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2
Q

Explain how the flap load relief system operates on all 757’s (and some 767’s).

A

If flaps 30 selected and overspeed occurs the flaps will retract to 25. The flaps will return to the flap lever selected position once the speed decreases below flap placard limit speed.

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3
Q

Explain how the flap load relief system operates on the 767ER.

A

If flaps 25 OR 30 selected and overspeed occurs, the flaps will retract to 20. The flaps will return to the flap lever selected position once the speed decreases below flap placard limit speed.

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4
Q

What assists ailerons in roll control?

A

Spoilers

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5
Q

When using the alternate flap/slat extension system, what is the maximum flap setting directed by the QRH?

A

Flaps 20

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6
Q

Describe the function of the alternate LE or TE switches on the 757.

A

On the 757, hydraulics are removed from BOTH systems, and the selected alternate drive unit is enabled

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7
Q

Describe the function of the alternate LE or TE switches on the 767.

A

Hydraulics are removed from the selected system and the selected alternate drive unit is enabled. The flap lever must continue to be moved on the 767 to hydraulically operate the system which still has hydraulics.

Example: During a 767 TE flap disagreement, the QRH will direct the pilot to select the TE alternate flap switch. The trailing edges will be controlled electrically with the ALTERNATE FLAPS SELECTOR switch, but the leading edges (slats) must still be controlled hydraulically using the flap lever.

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8
Q

When is leading edge slat asymmetry protection provided on the 757?

A

At all times.

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9
Q

What protections are provided during normal flap operation?

A

Asymmetry protection
Disagreement protection
Flap Load Relief Protection

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10
Q

What occurs upon detection of a flap asymmetry or disagreement?

A

Hydraulic power is automatically shut off

A LEADING EDGE or TRAILING EDGE discrete light illuminates

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11
Q

When do the outboard ailerons operate on the 767?

A

At low speeds.

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12
Q

How does the 767 control column nudger work?

A

Warning of an impending stall is provided by left and right stick shakers, which independently vibrate the left and right control columns. If the flaps are in the retracted position and the angle of attack continues to increase, a control column nudger moves the control column forward. Both systems are energized in flight and deactivated on the ground through air/ground logic.

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13
Q

What is the rudder ratio system?

A

Uses left hydraulic system pressure to reduce rudder deflection (based on airspeed).

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14
Q

How does the rudder ratio system work?

A

As airspeed increases, the ratio changer desensitizes the rudder and trim inputs from the pilot to reduce the rudder deflection. The ratio changer receives air data computer airspeed inputs and provides control commands to an actuator powered by the left hydraulic system. The actuator then dampens the pilots’ inputs to the rudder.

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15
Q

What does an illuminated STAB TRIM light mean?

A

The electric or alternate stabilizer trim rate is one-half the normal rate.

16
Q

What does an illuminated SPOILERS light mean?

A

One or more spoiler pairs are not in the signaled position.

17
Q

What does an illuminated AUTO SPDBRK light mean?

A

A fault is detected in the auto speedbrake system.

18
Q

Explain the meaning of an illuminated UNSCHED STAB TRIM light.

A

Uncommanded stabilizer motion is detected. Memory aid: “Wrong Way or Runaway”

19
Q

Explain the meaning of an amber illuminated LEADING EDGE light.

A

A slat disagree or slat asymmetry exists

20
Q

Explain the meaning of an illuminated AIL LOCK (aileron lockout) light (767 only).

A

Outboard aileron lockout actuator disagrees with the commanded position. (At low speed, outboard ailerons should be unlocked, at high speed outboard ailerons should be locked).

21
Q

Explain the meaning of an amber illuminated TRAILING EDGE light.

A
  • a flap disagree exists
  • a flap asymmetry exists
  • the flap load relief system is not operating when required

Note: This light may occur if the flap lever is not in the detent for an extended period of time.

22
Q

What does an amber illuminated RUDDER RATIO light mean?

A

the rudder ratio system is failed, or left hydraulic system pressure is not available.

23
Q

Where can you find flap limit speeds?

A

A placard located around the periphery of the flap position indicator.

24
Q

When is the alternate flap selector operable?

A

When either LE or TE Alternate flaps switches are selected.

25
Q

What does an amber illuminated yaw damper INOP light mean?

A

The yaw damper is off or inoperative. Note: INOP lights are illuminated during IRU alignment.

26
Q

Explain the meaning of an illuminated MACH SPD TRIM light.

A

The mach/speed trim system is inoperative.

27
Q

How do the speed brakes automatically deploy when in ARMED mode?

A

After landing, the speedbrake lever automatically moves to UP
and the spoiler panels extend, when both thrust levers are at idle

28
Q

How do the speed brakes automatically deploy when in DOWN mode?

A

The speedbrake lever moves to UP and all spoiler panels
extend if either reverse thrust lever is raised to the reverse idle detent

29
Q

What does manual speedbrake extension after landing result in?

A

Immediate and full deployment of all spoiler panels.

CAUTION: Care must be taken when manually deploying speedbrakes because a nose-up moment is created, which can result in a tail strike.

30
Q

What does an amber illuminated SPEED BRAKES light on the center forward panel mean?

A

the speedbrakes are extended when:

- the flaps are in a landing position, or
- radio altitude is 800 feet or below

DL 7ER (17 decks)

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