M7- Reviewer Flashcards
They prohibit an action that could cause a hazard, e.g.
smoking.
- Prohibition Signs (Red)
They command a certain action, e.g. the use of ear
protection.
- Mandatory Signs (Blue)
They warn against a danger or risk, e.g. toxic materials.
- Warning Signs ( Yellow)
heavy and bulky objects such as machines, large castings
and forgings, heavy beams, and plates etc., which have to be
loaded onto vehicles, unloaded from vehicles or moved
around within the factory are defined as
- Loads
Mechanical lifting equipment should be used for loads in
excess of
- 20 kg
High loads or incorrect methods of lifting can result in
damage of the intervertebral discs causing considerable
pain. This is often referred to as a
- ’slipped disc’
it is to provide suitable, and adequate personal protective
equipment and it is the employee’s responsibility to use it.
- Employer’s responsibility
In the event of an injury that occurred at work, it is the
_________ to ensure that a record of the
injury (and subsequent treatment) is recorded in the
Accident Book.
employee’s responsibility
If sound levels reach or exceed the limit of 80 decibels (A) at
workplace, the respective workplace is regarded as
- noise sector
If sound levels reach or exceed the limit of 85 decibels (A),
the workplace is classified as
- identifiable noise sector
is used for all pneumatic tools like drills, rivet guns, paint
spray-guns etc.
- Compressed air
is used to inflate, tires and shock struts.
- Compressed Nitrogen
Compressed air is normally created by a compressor, stored
in a
tank and distributed via pressure lines
Other compressed gasses, such as nitrogen and oxygen, are
stored in
steel cylinders, usually on racks or trolleys.
is carried on aircraft for emergencies to support breathing at
high altitudes in the event of a cabin pressure loss
- Pressurized oxygen
are easily combustible due to the carbon in their molecular
structure and their low flash and ignition point..
Oils and Greases
are mainly organic substances, which are used to dissolve,
dilute or suspend other materials in order to enable their
processing or removal.
- Solvents
Class A
- solid matter as: wood, fabric, paper
Class B
- liquid matter, or matter that will become liquid, oils
and grease
Class C
- gaseous matters hydrogen, propane, petroleum
gas etc.
Class D
- flammable metals (magnesium, potassium,
natrium).
Class F
- cooking oil and fat
______ work by cooling the fire below the
ignition temperature.
Water extinguishers
____, when electricity
and chemicals are not present.
Water should only be used for Class A fires
_____ work by eliminating oxygen
from a fire, and by decreasing the temperature
Carbon dioxide extinguishers
It is suitable to extinguish Class A and B fires
Carbon Dioxide and Foam
These extinguishers are most effective on Class A,B, and C
fires.
Dry Powder
____ The most common fire
extinguishing agent for aircraft cabin fires is ____, a
liquefied, compressed gas that stops the spread of fire by
chemically disrupting combustion.
Halogenated Hydrocarbon
____ use an aqueous film forming foam
(AFFF) agent that builds a layer of foam when it is
discharged through the nozzle onto the surface of a burning
liquid, starving a fire by removing the oxygen.
Foam fire extinguishers
foam is suitable for
Classes A and B fires
For fires of classes D and F extinguishing agents such as ___
Sand
Use it for people when the clothes are on fire
- Fire blanket
Due to a special use or higher fire risk some facilities are
equipped with semi-stationary and stationary fire
extinguishing devices in addition to other mentioned
equipment.
- Wall Hydrant
is a covering law and serves the company’s internal
emergency and catastrophe protection and/or the limitation
of damages in case of emergencies.
- Alarm Order
_____ is related to local accidents (fire and material
damage, etc.)
Alert phase I
_______ is related to crisis-type emergency situations,
whose impact extends beyond the company area, and have
consequences on e.g. air traffic. Centralized concerted
actions are necessary.
Alert phase II
defines the meter as the unit of length and the kilogram as
the unit of mass.
- International System of Units (SI)
The difference between the basic dimension and the upper
or lower limit is called the
.
- allowance or tolerance
is a very useful instrument for taking measurements up to
several feet
- Flexible Steel Tape
is the most common tool for testing squareness of
components and parts.
- Tri square
it should be so held that the graduation lines are as close as
possible to the face.
- Scale Handling
consists of a half round dial that is graduated from 0° to
180° and is suited for measuring angles of components and
parts.
- Protractor
are used to measure either inside or outside radii.
- Radius Gauge
- is made up of a number of thin steel leaves with different
thickness that fold into a handle. - is generally used in assembly areas to check interface gaps
or gaps under bolt heads or nuts.
- Thickness (Feeler) Gauge
In the English/American unit system all temperatures are
given in degrees Fahrenheit.
- Fahrenheit Unit
The Celsius scale is in general use wherever metric units
have become accepted, and it is used in scientific work
everywhere.
- Celsius Unit
Kelvin temperature scale is the base unit of thermodynamic
temperature measurement in the International System (SI) of
measurement.
- Kelvin Unit
The carbon, when
heated, can infuse the metal and cause cracking.
Never use a lead pencil on titanium
For marking of aluminium alloy use only a soft lead pencil
(except for cut-lines, when a scriber may be used).
True
working with aluminium parts and components, _____ for layout work or for marking
reference lines in areas that will not be removed
only a soft
lead pencil may be used
For marking out length, a
rule or steel tape is used.
___ are used for marking out i.e. right angle lines
Tri-squares
are used for scribing arcs and circles, for measuring between
points and for transferring dimensions. The distance
between the sharp ends of the arms is compared with the
rule.
- Dividers
is used to mark permanent lines on component or part
surfaces.
- SCRIBER
has a vertical beam scale fixed to a flat base. It is usually
used on a surface plate or a marking out table (the datum
beam surface).
- Vernier height gauge
It is used to measure high current ratings.
- Current Clamp Meter
For low resistance measurements, special measurement
devices are used. One of these devices is the
- bonding meter
Current ampere: in line voltage: Across
is the amount of rotational force applied when tightening a
fastener.
- Torque
show the actual torque on a mechanical scale, a dial gauge
or an electronic scale. („Measuring wrench“).
- Indicating Torque Wrenches
are preset to the desired torque value and are starting a
signal when the torque is reached („click wrench“)
- Signalling Torque Wrenches
control friction and wear by introducing a friction-reducing
film between moving surfaces in contact. They may be fluid,
solid or plastic.
- Lubricants
is derived from crude oil. Crude oil consists of carbon
hydride. In the industry you differentiate between the mineral
oil products fuel and lubricant.
- Mineral oil
are manufactured by chemical reactions, which have an
advantage concerning a constant composition and quality.
- Synthetic oils
is a lubricant composed of oil and sometimes the oil is
thickened with soap or other thickener to make a solid or
semi−solid product
- Grease
is the preferred general−purpose aviation grease
recommended by Boeing for applications exposed to
temperatures of less than 250oF.
- BMS 3−33
concentrate the force from a hammer blow to the immediate
area of the punch tip.
- Punches
is ground to an angle of approximately 60 degrees and is
used to make indentations in metal, so called punch-marks.
This helps to prevent ’wander’ when starting to drill a hole.
- Center Punch
incorporates an adjustable spring-loaded trip mechanism,
negating the requirement for a hammer.
- Automatic Center Punch
This is used to start when driving out a bolt or pin. Once the
taper almost fills the bolt-hole, the job should be finished
with a pin punch to prevent damage of the hole
- Drift (Taper) Punch
have a parallel shank and are available in different diameters.
- Pin Punch
is mostly used for separating material but also for producing
grooves and notches
- Sawing
The ___ is the space from one tooth to the next.
Pitch
Coarse
for soft materials (14 teeth)
Medium
for normal materials (22 teeth)
Fine
for hard materials (32 teeth)
To prevent the saw blade from binding as it cuts
into the material, the slot it creates must be greater than the
blade thickness.
Clearance
The sawing movement is done with:
● Forward stroke under pressure.
● Return stroke without pressure.
is a process which removes material from metal or wood,
etc. / A finishing process to smooth a surface without
removing much material.
- Filing
are used for flat or convex surfaces
- Flat files
have a cross-section that is an equilateral triangle. These
files are limited to internal angles greater than 60°.
- Triangular files
are used for filing keyways and for enlarging square or
rectangular holes
- Square files
are used to file small inner radii.
- Round files
-have a flat side and a side with a radius.
-used to file medium and large inner radii.
- Half-round files
are generally used to produce a smooth surface or to file a
keen edge and for use on soft metals like lead, zinc or
aluminium.
- Single-cut files
are used for fast metal removal and where a rough finish is
permissible
- Double-cut files
produces an extremely rough cut and is used on very soft
materials, e. g. Wood
- Rasp-cut file
has a curved form single-cut (often called a ’Dreadnought’)
and is used to produce a very smooth finish on soft metals
such as aluminum.
- Curved-Tooth file
The upper side of the bench vice should be ___
5−8 cm (2−3
inch) below your elbow
When filing very soft metals (such as lead or aluminum),
___
pressure should be applied on both forward and backward
strokes
is also used for breaking edges after machining like sawing
or stamping of sheets or other parts
- DRAW FILING
You can clean a file with a file brush by brushing ___
across the
file in a direction parallel to the teeth.
Drills are made of
- chromium−vanadium−steel (CV) or high speed
steel (HSS)
is the part designed to fit into the drilling machine
- Shank of a drill
is the part between the point and the shank. It includes the
spiral flutes, the lands and the margin.
- body of a drill
The point of a drill includes the entire cone−shaped cutting
end of the drill.
- Cutting edge
is the peripheral portion of the body between adjacent flutes.
- Land
Helical grooves cut or formed in the body of the drill to
provide cutting lips, to permit removal of chips and to allow
cutting fluid to reach the cutting lips.
- Flutes
The raised part of the bevel creates a gap between the bore
wall and drill and prevents the seizure of the drill.
- Margin
has a long shank for reaching limited−access areas. The drill
should not be used unless absolutely necessary.
- Extension drill
have a taper called the Morse taper. The size of taper
incorporated on any particular drill depends on the drill
diameter.
- Taper shank drills
The number of the Morse taper hole in a machine spindle will
depend on the size of the machine:
● Morse 1 for small machines
● Morse 4 for large machines
is a bench −mounted or floor-mounted machine. is driven by
an electric motor through a speed −changing mechanism;
either a belt transmission or a gear transmission.
- Pillar Drill
The most commonly-used hand held drill motor for drilling
aircraft sheet metal is the
- pneumatic or air drill
These tools are ordered by drill power and
speed.
The pistol-grip or straight drills are the most often-used
drill motors.
are used in environments, in which a straight-grip or a
pistol-grip drill motor can not be used due to limited space
and access or due to the workpiece geometry.
- Angle Drill Motors
Another tool designed for use in close quarters. This tool
allows the work application in limited space areas through
an ancillary transmission.
- Flat Offset Drilling Head or pork chop
is used only in limited−access areas where an angle drill
motor cannot be held perpendicular to the surface.
- Flexible Snake Drill
is a simple drilling device, in which a drill is turned with
manual power through a transmission.
- Hand Drill
To secure work when using the pillar drill a vice, clamps and
dogs are often used.
- Pillar Drill Clamping
Most work will be secured by using a____. The main use of
the_____ is to hold the work during drilling, reaming etc.
- Vice
are used if the part can not be clamped by a vice due to the
part’s dimensions.
- Clamps and Dogs
is used as a block and is available in the most common drill
diameters.
- Drill Stop
keeps the drill 90° to the skin surfaces. The guide assembly
consists of a plastic housing and special screw in type
hardened steel bushing.
- hand-held drill guide
is designed for accurate drilling of rivet holes for nut plates
(sometimes called ’anchor-nuts’).
- Nut Plate Drill Jig
When replacing an old skin with a new one, if there are no
pilot holes drilled in the new skin it is quite difficult to
precisely locate the holes in the structure. For this procedure
we may use.
- Hole Finder sometimes called a ’back-marker’
The size of a drill is stamped on its shank. If the size cannot
be read, it can be determined by using
- Drill Gauge
When holes are drilled through two sheets of material, small
burrs are formed around the edges of the holes and chips
can be pushed between the two sheets.
- Deburring
This tool is designed to deburr holes on the back side which
you could not reach with standard deburring tools, due to
limited access.
- Special Deburring Tool
Hand reamers mostly have a
cylindrical shaft with a square
end (for a tap wrench).
Shafts of the machine
− reamers are cylindrical or Morse
tapered.
are the spaces between the single teeth; all chips are
collected and transported in these spaces.
- Chucking grooves
