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M11 > 11.5 Avionic Systems > Flashcards

11.5 Avionic Systems Flashcards

1
Q

What is the level of an advisory IAW instrument systems?

A

Level C/ 1

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2
Q

What frequency is the right lobe IAW avionics systems

A

150Hz

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3
Q

What frequency is the upper lobe IAW avionics systems

A

90Hz

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4
Q

What does mode S on the transponder do?

A

The transponder can be activated selectively, can transmit address and identification

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5
Q

What does mode A on a transponder do?

A

Can only transmit the identification codes

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6
Q

What gyro would be used to indicate the aircraft’s attitude

A

Vertical gyro

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7
Q

Modern flight recorders…

A

Store flight data from the last 25 hours of flight for accident investigation purposes

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8
Q

Vertical gyros have…

A

3 degrees of freedom with a vertical spin axis

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9
Q

What does the inner loop of the an auto pilot control

A

Controls the attitude of the AC and is always active

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10
Q

What signal is used to dampen Dutch roll oscillations

A

Yaw rate

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11
Q

What method is used to disconnect the auto throttle system

A

Pushing either throttle level disconnect button

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12
Q

What is the VHF emergency frequency

A

121.5Mhz

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13
Q

What is true for ACARS

A

Used for manual and automatic data transfers between the AC and the ground in both directions

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14
Q

What does 1KhZ tone indicate on HF system

A

Indicates that the antenna coupler is tuning to the newly selected frequency

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15
Q

What is the priority sequence in the passenger address (Pa) amplifier?

A

Cockpit crew
Cabin crew
Pre recorded announcements
Boarding music

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16
Q

How does DME measure distance

A

The time between the interrogation and reply signal is proportional to the distance of the station

17
Q

Describe VOR principle..

A

The VOR receiver calculates the magnetic bearing from two signals transmitted by a ground station

18
Q

What is the purpose of two antennas fitted in an ADF system

A

Two antenna systems are required to determine the correct direction

19
Q

What indicates localiser deviation

A

HSI (horizontal situation indicator)
ADI (attitude direction indicator)

20
Q

What does the airspeed indicator indicate?

A

It shows the indicated airspeed (IAS) which is the reference for all aerodynamic parameters like lift and drag

21
Q

What is the priority sequence for PA?

A

. Cockpit crew
. Cabin crew
. Pre recorded
. Boarding music

22
Q

What happens to the horizontal stabiliser if the centre of gravity moves forwards?

A

The elevators would move up and trim tab move down

M11 (41 decks)

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