Study Guide-Flight Control Panel Flashcards

1
Q

What does ELAC stand for?

A

Elevator Aileron Computer

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2
Q

How many ELACs are there?

A

2

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3
Q

What are the functions of the ELAC?

A

-Control of the elevators, ailerons, and the Trimmable Horizontal stabilizer (THS).
-The ELACs compute the need for roll spoiler movement (which is sent to the SECs), and rudder yaw movement (which is sent to the FACs).

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4
Q

In the event a single ELAC should fail, what would happen?

A

The remaining ELAC is capable of providing complete control of the ailerons, elevators, and THS (Trimmable Horizontal Stabilizer).

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5
Q

What does SEC stand for?

A

Spoiler Elevator Control

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6
Q

How many SEC’s are installed?

A

3

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7
Q

What is the primary responsibility of the SECs?

A

Spoiler control. Each SEC controls one or 2 pairs of spoilers.

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8
Q

What does a FAULT light in the SEC pb mean

A

The SEC is inoperative.

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9
Q

What do you lose when a SEC is inop?

A

The spoiler panels associated with the failed SEC are inoperative.

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10
Q

Both ELACs fail, can any of the SECs provide backup and of what functions?

A

SECs 1 and 2, can provide backup pitch control of the elevators and THS (Trimmable Horizontal Stabilizer). Aileron control is lost and the ailerons streamline. Roll is accomplished with just the spoilers.

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11
Q

What does FAC mean?

A

Flight Augmentation Computer

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12
Q

How many FACs are there?

A

2

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13
Q

What are the functions of the FACs?

A

-Rudder
-Rudder Limiting
-Rudder Trim
-Yaw dampening
-Auto Turn Coordination
-Characteristic Speeds
-Flight Envelope & Maneuvering Computations
-Low Energy Warning Computation (Speed, Speed, Speed)
-Alpha Floor Protection
-Windshear detection

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14
Q

What happens if you select a FAC pb to OFF?

A

Deactivates the corresponding yaw dampening and rudder trim functions to that FAC. If the FAC is still operable, it continues to compute all flight envelope functions and maneuvering speeds.

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