問題一覧
1
before applying an aerodynamic smoothing coumpound to repair seams
clean the area with approved solvents
2
the method you use to remove excess aerodynamic smoothing compound from seams depends on the
hardness of the compound
3
what type of seal is produced by sandwiching sealant between mating surfaces
faying
4
when preparing to mix a two-part sealant, you mix the sealant in according with the
manufaturer’s instructions
5
to clean dirt and grease from a surface to be sealed, you use
an approved solvent/cleaner
6
when the TO calls for a permanent type of seal between two parts, you install a
faying surface seal
7
sealants that have a long work-life normally have a
long curing period
8
what do you use to fabricate a sealant removal tool
plastic
9
an atom that has gained or lost electrons and has acquired and electrical charge is called
an ion
10
corrosion in an electrochemical cell always starts an the
surface of the metal
11
what is their rate of corrosion when the anode is smaller, in relation to the cathode in the electrochemical corrosion cell
rapid and severe
12
metals such as stainless steel and titanium that corrode slowly are referred to as
cathodic
13
sone metals have the ability to become electrochemically inactive or passive under certain conditions because of the formation of
oxide film
14
on a polished surface, uniform surface corrosion is first seen as
general dulling of the surface
15
pitting corrosion of aluminum or magnesium is first noticed as
white powdery deposits
16
when preforming a corrosion inspection, which tool would you use to dislodge blisters or bubbles
plastic scraper
17
which formula would you use to determine maximum corrosion pit depth when using a dept gauge
(a+b)/2-c= depth
18
when inspecting exhaust path.s for corrosion, what areas should be inspected because they cannot be reached with normal cleaning
seams and fairings
19
what is the first step in a general corrosion insp
ensure the area has been thoroughly cleaned
20
corrosion that appears as blistering, exfoliation, and scaling or flaking is classified as
severe
21
prior to corrosion removal, what must be determined
allowable damage removal limits
22
material compatibility refers to using a medium that will
not cause additional corrosion
23
which motion should you use when removing corrosion with a hand held wire brush
linear
24
when removing corrosion with pneumatic sander, how do you keep the sander from digging into the metal
start the sander before it touches the metal
25
after all visible corrosion is removed, how many additional mils should be removed
2
26
what is the last step in the general corrosion removal process
treat the surface and apply protective coating
27
the paint edges around the chemically stripped areas are feathered in order to
ensure a smooth, overlapping transition between the old and new paint surface
28
the two categories that corrosion preventive coumpounds are separated into include
water displacing and non-water displacing
29
low viscosity CPC are best suited for what type of application
spraying
30
which is not a reason for immediate cleaning
poor aerodynamic smoothness
31
when would an aircraft that took off four times over salt water require a clear water rinse
after every flight
32
what conditions do you consider when you are choosing a cleaning method
type of metal and degree of cleaning required
33
standards for paint such as color, drying time, and adhesion are stipulated by the
military specification
34
solid waste can be any material that is essentially waste-like, abandoned, or
recycled
35
at a minimum, material data safety sheet are made available to
everyone
36
the four characteristics of hazardous waste are ignitableity, corrosivity, reactive, and
toxicity
37
an individual item of supply that has a definite non-extendible period of shelf-life is considered type
1
38
an individual item of supply that has an extendable shelf-life is considered type
2
39
90 day accumulation sites for haz waste containers should be able to contain the volume of
a largest container or 10%of the volume of the container, whichever is greater
40
how often should haz waste containers be insp for release problems
weekly
41
what percentage of low observable coatings must be separated as classified or unclassified prior to disposal
100%
42
the type of chemical remover to be used depends on the
type of organic finish system to be removed
43
when do you mix chemical paint remover
immediately before use
44
what special requirements must be met when mechanically removing coatings on steel and titanium alloy
part must be grounded and area must be well be grounded
45
when using the plastic media blasting cabinet blaster, check the media level
prior to use
46
what is the first step when preparing a part for blasting in the plastic meds blasting booth
thoroughly clean the substrate
47
he purpose of adding pigment to paint is to develop
color
48
after checking the shelf life of your coating material you should
mix the material per manufacturers instruc
49
what will happe if two-component materials are not throughly mixed with each other and in the exact specified proportions
curing and adhesion problems will occur
50
using a #2 zahn cup, how is the viscosity expressed
seconds through the cup
51
what type of spray gun is made with an external airtight container
pressure-feed
52
the distance that you hold the spray gun nozzle from the surface depends upon the
desired width of the spray pattern and type of gun used
53
when using parallel strokes with a spray gun, the spray pattern should
overlap 50% of the previous stroke
54
when should you dismantle a spray gun
after each use
55
what effect does low humidity have on moisture curing coating
slows the cure process
56
what is the coarsest grit of abrasive paper that should be used to scuff-sand an already coated aircrat
120
57
when painting, what must you do just prior to primer or topcoating
perform a solvent wipe down
58
what is the minimum number of readings you need to take when using a wet film gauge to measure coating thicknesses
6
59
what is the most common cause of coating failure
inadequate surface preparation
60
the probable cause of a protective coating spray pattern with a split spray is
air and fluid feeds not properly balanced
61
at is a common cause of streaking when spraying painting
dirty air cap
62
on fixed-wing aircraft, the national star insignia is listed on the
upper left and lower right of the wings, and both sides of the fuselage
63
what is the next step after the plotter cuts your vinyl
the undesirable material must be weeded