Chapter 3 - Subsidiary Airframe Structure Flashcards

1
Q

What are subsidiary airframe structures?

A

Doors, windows, floors

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2
Q

To what extent could the failure of a subsidiary structure affect an A/C?

A

it can cause loss of the A/C

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3
Q

What are A/C floors usually made from?

A

sandwich panels

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4
Q

What is the type of door on a commercial A/C?

A

A plug type

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5
Q

How are the seals in plug type doors pressurised?

A

With bleed air from the engines

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6
Q

What type of doors are cargo doors?

A

Latch and lock mechanism doors that a hinged from the top, opening outwards.

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7
Q

What are the requirements for flight deck windows?

A

They must have excellent optical qualities

be sealed securely to withstand cabin pressurisation forces

withstand stresses imposed by temperature difference

withstand significant impacts without braking

have a de-ice/anti-ice facility

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8
Q

What is the composition of an A/C windscreen?

A

2 outer layers glass/acrylic

inner layer vinyl

conductive coating between outside panel and inner vinyl to allow heating.

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9
Q

What are side windows usually made of and why?

A

acrylic to reduce weight

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10
Q

What does CS-25 require for A/C equipped with direct vision windows?

A

The windows must be designed to either slide back or to open inwards

be large enough to be used as a means of emergency escape.

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11
Q

What does CS-25 require regarding pilot eye level setting?

A

It requires that the A/C be fitted with aids to ensure both pilots set their eye position to the correct point.

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12
Q

What type of windows are fitted in the cabin?

A

Plug type.

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