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問題一覧
1
describe this?
red warning, diamonds
2
how is rigid tube size measured?
outside diameter in 16ths
3
rigid tube defects and repairs
most common = leakage at fittings, scratches
4
what is the purpose of the inner liner in a flexible hose?
carries the fluid, chemically compatible with the fluid
5
what are two types of fittings used on flexible lines?
1. swagged, one time use 2. re-usable, more than one use
6
rigid tube size for #5 tube?
5/16
7
what are aircraft fluid lines made of?
1. “metal tubing” stationary applications 2. “aluminum” most common, vent air 3. “flexible hose” moving parts, high vibration
8
AN/MS fitting colour for titanium?
grey
9
how can tubing be identified?
colour band, symbols, writing
10
flexible line -4 I.D?
4/16ths
11
colour codes to identify aluminum alloy tubing, 7075 colour?
brown + yellow
12
colour codes used to identify aluminum alloy tubing for 2024
red
13
what is the maximum flattening allowed for rigid tube bending?
max flattening is 25% of tube outside diameter
14
what are flexible fluid lines used for ?
connects stationary part to moving part
15
tube bending methods
• by hand, under 1/4” •hand bending tool, between 1/4” to 1/2” •mechanical “production” bender, over 1/2”
16
AN/MS colour for CRS?
natural
17
what does FLAM and PHADAN stand for ?
FLAM = flammable PHADAN= physically dangerous
18
what factors are used when determining what type of flex-hose material to use?
what type of fluid is moving through the line, ensuring the fluid type is compatible with the line
19
2 methods to join rigid tube assemblies
flared, flareless
20
list 6 examples of what aircraft tubing assemblies are used for?
1. oil 2. oxygen system/ breathing air 3. instruments/ navigation 4. hydraulics 5. fire protection 6. ice and rain 7. environmental 8. fuel
21
what is the minimum bend radius for -4 ? flexible line?
3”
22
minimum bend radius for -16 flexible lines?
9 5/8”
23
what is a single and double flair used for?
•single flair for all sizes •double flair for soft aluminum, O.D of 3/8”
24
describe this
green warning, rectangles
25
what is the purpose of the outer cover in a flexible hose?
put over reinforcement. protects against physical damage, made of rubber or steel braids
26
minimum bend radius for -8 flexible line?
5 3/4”
27
AN/MS fitting colour for carbon steel?
black
28
minimum bend radius for -12 flexible line
7 3/4”
29
how are flexible fluid lines measured?
inside diameter in 16”th
30
what is the purpose of the lay line on a flexible hose?
stripe running length of line, shows if line is twisted. line runs parallel
31
beaded tubing is used on what type of systems?
older “low pressure systems”, gravity and vacuum systems
32
what factors should be taken into consideration when fabricating a replacement rigid tube?
1. material same as original tube material 2. same tube diameter and wall thickness
33
flexible fluid line -5” line?
5/16”th
34
what flair angle is used on aircraft rigid tube lines?
37 degrees
35
list the three types of flexible hoses
1. low pressure 2. medium pressure 3. high pressure
36
rigid tube size for #4
4/16
37
flareless fitting steps
1. select correct size 2. clamp tool in device 3. slide sleeve onto tube 4. lubricate fitting threads 5. place tube end firmly 6. tighten nut to specified turns in AMM
38
list 4 examples of rigid fluid line material?
1. copper 2. aluminum 3. CRS “corrosion resistant steel” 4. titanium
39
AN/MS colour for aluminum alloy?
blue
40
list the synthetic compounds used for inner lining of a flexible hose?
1. neoprene 2. Teflon 3. butyl 4. bunan
41
list the process required to fabricate solid / rigid tubing?
1. tube cutting 2. deburring 3. bending 4. joining
42
what is the minimum bend radius for -5? flexible line
3, 3/8”
43
what is minimum bend radius for -6 flexible line?
5”
44
minimum bend radius for -10 flexible line?
6 1/2”
45
when is titanmium tubing used?
above 3000psi
46
what are colour codes to identify alloy tubing?
2024 main alloy “copper”, red colour 7075 main allow “zinc”, brown + yellow colour
47
explain the function of a vent line?
carry excess fluid overboard or other receptacle
48
AN/MS fitting material for aluminum cadium plate?
bronze
49
what is the purpose of the minimum bend radius for flexible hoses?
allows for expansion and contraction, no kinks in line
50
describe this
grey warning, triangles
51
rigid tube size for #8
8/16 or 1/2