Doors & Emergency Exits

Question 1

How are doors classified?

Answer 1

Classified by function

Question 2

What are the three door classifications and what are they?

Answer 2

Main entry doors (MED plug type)allows for quick,safe,effective loading & unloading of passengers & equipment also used as emergency exit

Service doors (non plug type)provides access to systems such as toilet waste system & potable water system for servicing

Cargo doors(non-plug types)provides access to forward,aft & bulk cargo compartments

Question 3

Where would you find passengers main entry doors (MEDs)?

Answer 3

On right & left side of fuselage

Question 4

How are passengers main entry doors numbered?

Answer 4

From nose to tail

Question 5

Can MEDs be used as emergency exits?

Answer 5

Yes

Question 6

What does the door structure house?

Answer 6

Opening,locking & emergency mechanisms

Question 7

What does a door structure consist of?

Answer 7

-door frame
-beams (main structure)
-formers
-intercostals

Question 8

What does a door frame stop do?

Answer 8

Holds doors closed when cabin is pressurised

Question 9

What are the functions of a door seal?

Answer 9

-stopping pressurisation air leaks (pressure seals)
-stopping light transmission (light seals)
-reducing noise transmission (acoustic seals)
-reducing thermal transmission (thermal seals)
-improving aerodynamic smoothness

Question 10

On what principle do door seals operate?

Answer 10

Elastic deformation

Question 11

What are the 4 common seal shapes?

Answer 11

-bulb type seals
-diaphragm seals
-flap type seals (blade seals)
-multi form seals (combination or forms)

Question 12

What is the requirement for a flight deck door?

Answer 12

Must be secure for passenger aircraft

Question 13

What type of door are emergency exits typically?

Answer 13

Plug type

Question 14

What do emergency exits typically have for pressure?

Answer 14

Pressure indicator light

Question 15

What does a door synoptic display indicate the status of?

Answer 15

-equipment centre access doors
-passenger entry doors (PEDs)
-Cargo compartment doors

Question 16

What are the two modes and their colours for aircraft doos?

Answer 16

-auto (green)
-manual (white)

Question 17

What should all windows allow for?

Answer 17

Maximum visibility

Question 18

What do flight deck windows have additional protection for?

Answer 18

Bird strikes and ice buildup

Question 19

Name the 3 window locations?

Answer 19

-flight deck windows
-cabin windows
-observer windows

Question 20

What type of window do small unpressurised aircraft use?

Answer 20

Single pane of plastic

Question 21

What 2 types of windows do pressurised aircraft typically have?

Answer 21

-passenger windows
-flight deck windows

Question 22

What type of window are passenger windows?

Answer 22

Fixed plug type window

Question 23

Why do windows have 2 panes?

Answer 23

Failsafe design

Question 24

What is the third non-structural pane used on passenger windows?

Answer 24

Noise reduction

Question 25

How many flight deck windows are in a typical aircraft?

Answer 25

6

Question 26

How are flight deck windows typically numbered?

Answer 26

Symmetrically

Question 27

What are flight deck windows typically structured from?

Answer 27

Laminates of tempered glass and plastic

Question 28

What do opening/sliding windows provide?

Answer 28

Means of emergency escape

Question 29

What are the damage types for flight deck windows?

Answer 29

-delaminating & bubbles -chips,cracking or serrations.

Question 30

What is delaminating on a window?

Answer 30

Separation of glass/acrylic from the inter layer

Question 31

Are small bubbles in vinyl layer of windows delaminating and are they dangerous ?

Answer 31

No and no

Question 32

When may bubbles in a window cause a need for replacement?

Answer 32

When they decrease visual quality

Question 33

When would a flight deck window require replacement?

Answer 33

-cracks or hips on the inner glass pane -cracks in the outer glass pane -cracks in the vinyl ply that prevents vision through the window -scratches more than 0.002” in depth

Question 34

What should you check for on a passenger window inspection?

Answer 34

-crazing -crack -scratch -chips -V-shaped chips -in plane cracking

Question 35

What is the minimum grit allowable for sandpaper used on windows?

Answer 35

100

Question 36

What are the wing design factors?

Answer 36

-size -weight -use of aircraft -speed in flight -desired rate of climb -landing

Question 37

What are the main wing designs?

Answer 37

-mono-spar -multi-spar -box beam

Question 38

What type of design are the majority of aircraft wings?

Answer 38

Cantilever design

Question 39

What are wing spars?

Answer 39

Principal structural members of a wing

Question 40

What are wing ribs?

Answer 40

Structural cross pieces

Question 41

Is the wing tip removable?

Answer 41

Yes

Question 42

Why is the wing tip removable?

Answer 42

Damage prone

Question 43

What is the wing skin designed to do?

Answer 43

Designed to carry flight & ground loads