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United 787 SV Study Guide 12/2023 > Flight Controls > Flashcards

Flight Controls Flashcards

1
Q

On the ground, above 60 knots groundspeed, the flight control system attempts to
maintain a yaw rate near zero by applying rudder input. This function is only available
in: [8.90.10]
A. The NORMAL flight control mode.
B. The SECONDARY flight control mode.
C. The DIRECT flight control mode.
D. All modes

A

A. The NORMAL flight control mode.

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2
Q

With a complete loss of flight control signaling, the alternate pitch trim switches must
be used to move the stabilizer. [8.90.10]
A. True.
B. False.

A

A. True.

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3
Q

Both the flaps and slats are driven hydraulically in which mode(s): [8.90.10]
A. ALTERNATE mode only.
B. SECONDARY MODE only.
C. PRIMARY mode only.
D. In all modes.

A

C. PRIMARY mode only.

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3
Q

With the flaps and slats in the SECONDARY mode, if airspeed exceeds 225 knots
for the 787-8 or 240 knots for the 787-9 with slats fully extended, they retract to
the position. [8.90.10]
A. Retracted
B. 5 degree
C. Middle
D. Slat load relief not available in secondary mode

A

C. Middle

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4
Q

On the ground, all spoiler panels extend if both reverse thrust levers are raised to the
reverse idle detent. [8.90.10]
A. True.
B. False.

A

A. True.

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5
Q

Which of the following is true when the flight control system is operating in secondary
mode? [8.90.10]
A. Autopilot is available.
B. Envelope protection is available.
C. The PFCs are not available.
D. Autopilots and envelope protections are not available.

A

D. Autopilots and envelope protections are not available.

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5
Q

With flight control system operating in the direct mode, the primary flight computers
are operative. [8.90.10]
A. True.
B. False.

A

B. False.

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6
Q

The spoilers will automatically extend and the speed brake lever is driven to UP for a
rejected takeoff. [8.90.10]
A. True.
B. False

A

A. True.

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7
Q

In the NORMAL flight control mode, the autopilot system sends control surface
commands: [8.90.10]
A. Directly to the ACEs.
B. Directly to the PFCs.
C. To the backdrive actuators.
D. Both B and C.

A

D. Both B and C.

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7
Q

The autopilot is only available in the: [8.90.10]
A. NORMAL and SECONDARY flight control modes.
B. ALTERNATE flight control mode.
C. Only if normal stab trim is available.
D. NORMAL flight control mode only.

A

D. NORMAL flight control mode only.

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8
Q

With the flaps and slats in the PRIMARY mode, uncommanded motion will:
[8.90.10]
A. Cause the flaps or slats to transfer to the SECONDARY mode.
B. Cause the flap or slat system to transfer to the ALTERNATE mode.
C. Drive the slats to the mid sealed position.
D. Lock out the outboard flaps.

A

A. Cause the flaps or slats to transfer to the SECONDARY mode.

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9
Q

When operating with the slats in the SECONDARY mode and positioned to the full
extended position, if the airspeed exceeds 225 knots for the 787-8, or 240 knots for
the 787-9: [8.90.10]
A. The slats will transfer to the ALTERNATE mode.
B. LOAD RELIEF will be displayed on the EICAS.
C. The slats will retract to the middle position.
D. Both B and C.

A

D. Both B and C.

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10
Q

The primary flight control computers (PFCs) will override a pilot command. [8.90.10]
A. True.
B. False.

A

B. False.

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11
Q

The flaps and slats in the SECONDARY mode are controlled separately and can be
positioned by hydraulic pumps or electric motors. [8.90.10]
A. True.
B. False.

A

A. True.

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12
Q

Can the Primary Flight Computers be selected to the SECONDARY flight control
mode? [8.90.10]
A. Yes, by disconnecting the PFCs.
B. Yes, by disconnecting the autopilot.
C. No, SECONDARY selection occurs automatically.
D. Yes, by disconnecting the Stabilizer Trim.

A

C. No, SECONDARY selection occurs automatically.

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12
Q

In the NORMAL flight control mode, yaw control attempts to maintain zero yaw rate
due to engine failure when above: [8.90.10]
A. V1.
B. 60 knots groundspeed and airplane on the ground.
C. 150 knots IAS, with a thrust differential greater than 10%.
D. E/O acceleration height.

A

B. 60 knots groundspeed and airplane on the ground.

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13
Q

Disconnecting the primary flight control computers (PFCs) places the airplane:
[8.90.10]
A. In the SECONDARY and DIRECT modes.
B. In the ALTERNATE mode.
C. In the DIRECT mode.
D. Out of control.

A

C. In the DIRECT mode.

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14
Q

Wheel to rudder cross-tie is available in which mode(s)? [8.90.10]
A. Secondary and Direct Modes.
B. All modes.
C. Direct mode.
D. Normal mode

A

A. Secondary and Direct Modes.

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14
Q

The three flight control modes are: [8.90.10]
A. NORMAL, SECONDARY, DIRECT.
B. PRIMARY, SECONDARY, ALTERNATE.
C. NORMAL, SECONDARY, STANDBY.
D. There are only two modes of operation for the Primary Flight Control System.

A

A. NORMAL, SECONDARY, DIRECT.

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15
Q

With a total hydraulic failure, how are the Pitch and Roll modes controlled? [8.90.10]
A. Electrically using the control wheel.
B. Primary pitch trim switches.
C. Alternate pitch trim switches.
D. All of the above.

A

D. All of the above.

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16
Q

After landing, the flight control system automatically self-tests: [8.90.10]
A. When the left and right hydraulic systems are depressurized.
B. During engine shutdown, before external power can be connected.
C. When the flaps and speed brakes are retracted and groundspeed less than
30 knots.
D. When the PFCs are disconnected.

A

C. When the flaps and speed brakes are retracted and groundspeed less than
30 knots.

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17
Q

Why is the 787 provided with an electrical flight control backup system? [8.90.10]
A. In case of a dual AC bus failure.
B. In case of a complete hydraulic loss.
C. In case both FMCs are lost.
D. A and C.

A

B. In case of a complete hydraulic loss.

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18
Q

During takeoff, the rudder becomes aerodynamically effective at approximately 40
knots. [8.90.10]
A. True.
B. False.

A

B. False

19
Q

With the autopilot disengaged, when is manual trimming necessary? [8.90.10]
A. For configuration changes.
B. For airspeed changes.
C. Never, the autopilot trims the airplane.
D. A and B are correct.

A

B. For airspeed changes.

20
Q

In the NORMAL mode, pitch trim operates differently on the ground than it does in
flight. [8.90.10]
A. True.
B. False.

A

A. True

21
Q

Both primary and alternate pitch trim switches may be used with the autopilot
engaged. [8.90.10]
A. True.
B. False.

A

B. False.

22
Q

The stabilizer green band is calculated by: [8.90.10]
A. The nose gear pressure switch.
B. FMC inputs of CG.
C. FMC Gross weight
D. Both B and C

A

D. Both B and C

23
Q

The EICAS advisory message STAB GREENBAND is displayed when: [8.90.10]
A. The nose gear pressure transducer and greenband data disagree.
B. The FMC determines the stabilizer is in takeoff low mode.
C. Either nose gear transducer fails.
D. A and C are correct.

A

D. A and C are correct.

24
Q

Pitch trim is not available if BOTH the L2 and R2 stabilizer control switches are
placed to CUTOUT while in the NORMAL flight control mode. [8.90.10]
A. True.
B. False

A

B. False.

25
Q

Stall protection limits the speed to which the airplane can be trimmed.
[8.90.10]
A. True.
B. False.

A

A. True.

26
Q

The ailerons are during high-speed flight. [8.90.10]
A. Locked out
B. Fully deflected position
C. Locked out in low-speed flight
D. Are never locked out

A

A. Locked out

26
Q

Each hydraulic system is dedicated to a different set of spoiler pairs; therefore,
symmetric operation is maintained in the event of hydraulic system failure. [8.90.10]
A. True.
B. False.

A

A. True.

27
Q

Some of the benefits of an electronically controlled flight control system (fly-by-wire)
are: [8.90.10]
A. Increased fuel economy.
B. Enhanced handling qualities.
C. Reduced pilot workload.
D. All of the above.

A

D. All of the above.

28
Q

When is the slat auto gap function available? [8.90.10]
A. Flaps are in the primary mode with the slats in the middle position.
B. Airspeed below 225 KIAS for the 787-8.
C. Airspeed below 240 KIAS for the 787-9.
D. All of the above.

A

D. All of the above.

29
Q

Which of the following are limitations on the use of speed brakes? [1.30]
A. Do not use the speed brakes with flaps 25 or 30.
B. Do not use speed brakes with the gear down.
C. Speed brakes can be used at any altitude.
D. Do not use the speed brakes inflight below 1000 feet.

A

Do not use the speed brakes inflight below 1000 feet.

30
Q

The 787 has a single rudder having a hinged section that deflects twice as far to
provide additional yaw authority. [8.90.10]
A. True.
B. False.

A

B. False.

31
Q

The Wheel to Rudder Cross-Tie system operates in conjunction with the Thrust
Asymmetry Protection function and is effective both on the ground and in the air.
[8.90.10]
A. True.
B. False.

A

B. False

32
Q

If the flap placard speed is exceeded with flaps in the position for the
787-8/-9/-10, LOAD RELIEF is displayed and the flaps automatically retract to a
position appropriate for the airspeed. [8.90.10]
A. 15 through 30
B. 1 through 30
C. 5 through 30
D. A and B are correct.

A

A. 15 through 30

33
Q

The are locked out during high-speed flight. [8.90.10]
A. Ailerons
B. Ailerons and spoilers 5 and 10
C. Ailerons and spoilers 4, 5, 10, and 11
D. Spoilers 5 and 10

A

A. Ailerons

34
Q

The yaw control function for asymmetry compensation is inoperative in the Secondary
and Direct flight control modes. [8.90.10]
A. True.
B. False.

A

A. True.

35
Q

Which of the following functions are not available in the Secondary Mode? [8.90.10]
A. Wheel to rudder cross-tie.
B. Envelope protection.
C. Auto speed brakes.
D. B and C.

A

D. B and C.

36
Q

Roll control wheel input beyond 35 degrees of bank causes: [8.90.10]
A. The control wheel force rolls the airplane back to level flight.
B. The PFD bank indicator turns amber.
C. The control wheel force will not allow the pilot to override its inputs.
D. Both A and B are correct.

A

B. The PFD bank indicator turns amber.

37
Q

Automated yaw and roll control for engine failure, crosswind, or turbulence is an
integral part of the flight control system. [8.90.10]
A. True.
B. False

A

A. True.

38
Q

Tail strike protection cannot be overridden by pilot input. [8.90.10]
A. True.
B. False

A

B. False.

39
Q

Auto drag operates only when on an electronic glideslope or FMC generated
glidepath is captured. [8.90.10]
A. True
B. False

A

B. False

40
Q

Wheel to rudder cross tie is not provided in the flight control mode because
the flight control system automatically controls sideslip and fin loads. [8.90.10]
A. Secondary
B. Direct
C. Normal
D. Alternate

A

C. Normal

41
Q

Rudder trim is automatic in all flight phases in the flight control mode,
including during engine failure. [8.90.10]
A. Secondary and Direct
B. Secondary
C. Direct
D. Normal

A

D. Normal

42
Q

On landing automatic or manual trim inputs are zeroed after landing. [8.90.10]
A. True.
B. False

A

A. True.

43
Q

In the air, the spoilers automatically retract and the speed brake lever is driven
forward to the DOWN position when either thrust lever is approximately 70% of
full travel. [8.90.10]
A. True.
B. False.

A

A. True

44
Q

Pre-Gap functions when: [8.90.10]
A. The flaps are operating in secondary mode
B. Airspeed is below 225 on the -8 and below 240 on the -9/-10
C. The flap lever is out of up
D. All of the above conditions exist

A

D. All of the above conditions exist

45
Q

FLAP LOAD RELIEF protects flaps from excessive airload by: [8.90.10]
A. Retracting flaps back to a setting based on current speed, not to exceed flaps 5
B. When speed is reduced, the flaps will return to the flap handle setting
C. Only when operating in the Secondary and Direct flight control modes
D. Both A and B

A

D. Both A and B

46
Q

Land Attitude Modifier (LAM) is an automatic function used to increase: [8.90.10]
A. Pitch attitude.
B. Air speed.
C. Nose gear height.
D. both A and C.

A

D. both A and C

47
Q

With Autopilot engaged, moving any pitch trim switches will disengage the autopilot
[8.90.10]
A. True
B. False

A

B. False

48
Q

Stall Protection reduces the likelihood of inadvertently exceeding the stall angle of
attack by: [8.90.10]
A. Providing enhanced pilot awareness of the approach to a stall.
B. Limited the speed to which the airplane can be trimmed.
C. Allowing the airplane to be trimmed in a nose up attitude.
D. Both A and B.

A

D. Both A and B

49
Q

The EICAS advisory message STAB GREENBAND is displayed if the following
occurs: [8.90.10]
A. Computed green band disagrees with pressure transducer data.
B. The 2 transducer values are not within the set tolerance.
C. Either transducer has failed.
D. Any of the above.

A

D. Any of the above.

50
Q

Autodrag function operates by deflecting the ailerons downward in conjunction while
stowing the outboard spoilers. [8.90.10]
A. True
B. false

A

B. false

United 787 SV Study Guide 12/2023 (16 decks)

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