Flight Controls System Flashcards

1
Q

If the EICAS message “FLAPS PRIMARY” is displayed, what protection is provided?
(AOM Vol II, Ch 9)

A
  • Asymmetry protection is provided.

* Load relief is not provided.

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2
Q

With the loss of Hydraulic System 4, why does the QRH procedure require manual deployment of the ground spoilers? (QRH, Ch 13) (AOM Vol II, Ch 9)

A
  • With the loss of System 4, the inboard two spoilers on each wing are unpowered. Raising the remaining spoilers creates a nose up moment, and
  • The right outboard elevator is unpowered, reducing pitch authority.
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3
Q

Why does the QRH procedures for the loss of Hydraulic Systems 1 and 4 and loss of Hydraulic Systems 2 and 3 call for an approach speed of Vref30 + 20 knots?
(QRH, Ch 13) (AOM Vol II, Ch 9)

A

• Loss of pitch authority, requiring extra speed for the flare.

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4
Q

What operational factors would you consider when conducting an approach with Hydraulic System 1 unpowered.
(QRH, Ch 13) (AOM Vol II, Ch 9)

A
  • The inboard flaps will move in secondary mode.
  • The landing gear will be extended using the alternate system.
  • Extra time must be planned to configure for the approach.
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5
Q

The Alternate Flaps arming switch is pressed on and ALTN is annunciated in the switch, to what flap setting can you move the flap handle?
(AOM Vol II, Ch 9)

A

• The flap handle does not have any effect when using the Alternate Flap System.

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6
Q

Using the alternate flap system, how do you select flaps 1? (AOM Vol II, Ch 9)

A

• You cannot select flaps 1 using the alternate flap system.

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7
Q

Will the aileron trim function with and autopilot engaged? Is this permitted?
(AOM Vol II, Ch 9)

A
  • Aileron trim will function, but it is not apparent with the autopilot engaged.
  • This is not permitted.
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8
Q

What will occur if the control wheel trim switches are activated with an autopilot engaged? Are they ever inhibited? (AOM Vol II, Ch 9)

A
  • The autopilot will disconnect if any control wheel trim switch is actuated, except;
  • The trim switches are inhibited during a coupled ILS approach.
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9
Q

Hydraulic System 4 is inoperative. What performance penalty must be applied? How?
(QRH, Ch 13)

A
  • HYDRAULIC PRESSURE SYS 4 must be selected from the ACARS Landing Conditions Non-Normal menu, or;
  • A live calculation must be run by Flight Following and the data transmitted to the crew via ACARS or Satphone.
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10
Q

You may have noticed that the line and number on the flap indicator turn magenta when the PF selects reverse thrust. Why does this happen?
(AOM Vol II, Ch 9)

A

• During reverse thrust operation, automatic retraction of inboard and midspan leading edge flaps changes the flap position indicator to reflect flaps in transit.

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