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Total questions: 104
Worksheet time: 55mins
(8347) A primary reason why ordinary or otherwise nonapproved cleaning compounds should not be used when washing aircraft is because their use can result in
hydrogen embrittlement in metal structures.
hydrogen embrittlement in nonmetallic materials.
a general inability to remove compound residues.
(8349) When an anodized surface coating is damaged in service, it can be partially restored by
applying a thin coat of zinc chromate primer.
chemical surface treatment.
use of a suitable mild cleaner.
(8349.1) For which of the following reasons would a water break test be conducted?
To make certain that a newly alodized aluminum surface is sufficiently coated.
To make certain that a bare metal surface is thoroughly clean.
To make certain that an anodizing coating has been sufficiently removed before an electrical bonding connection can be made.
(8350) Select the solvent recommended for wipedown of cleaned surfaces just before painting.
Aliphatic naptha.
Dry-cleaning solvent.
Aromatic naptha.
(8351) Nickel-cadmium battery cases and drain surfaces which have been affected by electrolyte should be neutralized with a solution of
boric acid.
sodium bicarbonate.
potassium hydroxide.
(8352) Which of the following are acceptable to use when utilizing chemical cleaning agents on aircraft? 1. Synthetic fiber wiping cloths when using a flammable agent. 2. Cotton fiber wiping cloths when using a flammable agent. 3. Atomizing spray equipment.
2 and 3.
1.
2.
(8353) Select the solvent used to clean acrylics and rubber.
Aliphatic naphtha.
Methyl ethyl ketone.
Aromatic naphtha.
(8354) Fayed surfaces cause concern in chemical cleaning because of the danger of
forming passive oxides.
entrapping corrosive materials.
corrosion by imbedded iron oxide.
(8355) Caustic cleaning products used on aluminum structures have the effect of producing
passive oxidation.
improved corrosion resistance.
corrosion.
(8356) Fretting corrosion is most likely to occur
when two surfaces fit tightly together but can move relative to one another.
only when two dissimilar metals are in contact.
when two surfaces fit loosely together and can move relative to one another.
(8358) Which of the following are the desired effects of using Alodine on aluminum alloy? 1. A slightly rough surface. 2. Relieved surface stresses. 3. A smooth painting surface. 4. Increased corrosion resistance.
3 and 4.
1, 2, and 4.
1 and 4.
(8359) Which of the listed conditions is NOT one of the requirements for corrosion to occur?
The presence of an electrolyte.
Electrical contact between an anodic area and a cathodic area.
The presence of a passive oxide film.
(8360) The lifting or flaking of the metal at the surface due to delamination of grain boundaries caused by the pressure of corrosion residual product buildup is called
brinelling.
granulation.
exfoliation.
(8361) A nonelectrolytic chemical treatment for aluminum alloys to increase corrosion resistance and paint-bonding qualities is called
anodizing.
alodizing.
dichromating.
(8362) Which of the following are acceptable to use in cleaning anodized surfaces? 1. Steel wool. 2. Brass wire brush. 3. Aluminum wool. 4. Stainless steel wire brush. 5. Fiber bristle brush.
1, 3, & 5.
2 & 4.
3 & 5.
(8363) Intergranular corrosion in aluminum alloy parts
may be detected by surface pitting, and white, powdery deposit formed on the surface of the metal.
commonly appears as threadlike filaments of corrosion products under a dense film of paint.
cannot always be detected by surface indications.
(8363.1) Which of the following may not be detectable even by careful visual inspection of the surface of aluminum alloy parts or structures?
Filiform corrosion.
Intergranular corrosion.
Uniform etch corrosion.
(8364) What may be used to remove corrosion from highly stressed steel surfaces?
Steel wire brushes.
Fine-grit aluminum oxide.
Medium-grit carborundum paper.
(8153) When computing weight and balance, an airplane is considered to be in balance when
the average moment arm of the loaded airplane falls within its CG range.
all moment arms of the plane fall within CG range.
the movement of the passengers will not cause the moment arms to fall outside the CG range.
(8154) What tasks are completed prior to weighing an aircraft to determine its empty weight?
Remove all items except those on the aircraft equipment list; drain fuel and hydraulic fluid.
Remove all items on the aircraft equipment list; drain fuel, compute oil and hydraulic fluid weight.
Remove all items except those on the aircraft equipment list; drain fuel and fill hydraulic reservoir.
(8154.1) What is meant by the term "residual fuel"?
A known amount of fuel left in the tanks, lines, and engine.
The fuel remaining in the tanks, lines, and engine after draining.
The fuel remaining in the tank, lines, and engine before draining.
(8155) The useful load of an aircraft consists of the
crew, usable fuel, passengers, and cargo.
crew, usable fuel, oil, and fixed equipment.
crew, passengers, usable fuel, oil, cargo, and fixed equipment.
(8156) Which of the following can provide the empty weight of an aircraft if the aircraft's weight and balance records become lost, destroyed, or otherwise inaccurate?
Reweighing the aircraft.
The applicable Aircraft Specification or Type Certificate Data Sheet.
The applicable flight manual or pilot's operating handbook.
(8156.1) Where do you look to determine the operating CG range when calculating a new aircraft weight and balance document?
It is found on the airframe data plate.
It is found in the type certificate data sheet.
It is found in the pilot's aircraft information manual.
(8157) In the theory of weight and balance, what is the name of the distance from the fulcrum to an object?
Lever arm.
Balance arm.
Fulcrum arm.
(8157.1) In the process of weighing an airplane toward obtaining the CG, the arms from the weighing points always extend
parallel to the centerline of the airplane.
straight forward from each of the landing gear.
directly from each weighing point to the others.
(8157.2) Which would have an effect on aircraft CG results when conducting a weight and balance check?
Leaving the parking brake on.
Leaving the parking brake off.
Leaving the downlocks installed.
(8157.3) When an aircraft is positioned for weighing on scales located under each landing gear wheel, which of the following may cause erroneous scale readings?
Gear downlocks installed.
Parking brakes set.
Parking brakes not set.
(8158) (1) Private aircraft are required by regulations to be weighed periodically. (2) Private aircraft are required to be weighed after making any alteration. Regarding the above statements,
neither No. 1 nor No. 2 is true.
only No. 1 is true.
only No. 2 is true.
(8159) What FAA-approved document gives the leveling means to be used when weighing an aircraft?
Type Certificate Data Sheet.
AC 43.13-1B.
Manufacturer's maintenance manual.
(8160) To obtain useful weight data for purposes of determining the CG, it is necessary that an aircraft be weighed
in a level flight attitude.
with all items of useful load installed.
with no more than minimum fuel (1/12-gallon per METO horsepower) in all fuel tanks.
(8161) What type of measurement is used to designate the arm in weight and balance computation?
Distance.
Weight.
Weight x distance.
(8162) What determines whether the value of a moment is preceded by a plus (+) or a minus (-) sign in aircraft weight and balance?
The location of the weight in reference to the datum.
The result of a weight being added or removed and its location relative to the datum.
The location of the datum in reference to the aircraft CG.
(8163) The maximum weight of an aircraft is the
empty weight plus crew, maximum fuel, cargo, and baggage.
empty weight plus crew, passengers, and fixed equipment.
empty weight plus useful load.
(8164) Which statement is true regarding helicopter weight and balance?
Regardless of internal or external loading, lateral axis cg control is ordinarily not a factor in maintaining helicopter weight and balance.
The moment of tail-mounted components is subject to constant change.
Weight and balance procedures for airplanes generally also apply to helicopters.
(8165) What should be clearly indicated on the aircraft weighing form?
Minimum allowable gross weight.
Weight of unusable fuel.
Weighing points.
(8167) Maximum zero fuel weight is the
dry weight plus the weight of full crew, passengers, and cargo.
basic operating weight without crew, fuel, and cargo.
maximum permissible weight of a loaded aircraft (passengers, crew, and cargo) without fuel.
What type of line material would be used between stationary and moving parts?
Aluminum
Corrosion resistant steel
Teflon
What is the outside diameter of a -10 line?
1/2 inch
5/8 inch
7/8 inch
What factors must be considered when selecting fluid line materials for a particular application?
Location, system fluid, system temperatures and system pressure
Environment, corrosives and vibration
Exposure, movement, low pressure and high pressure
Which material is not suitable for phosphate ester base hydraulic fluids?
Teflon
Butyl
Neoprene
Which dimension is used to determine tubing size?
Inside diameter
Wall thickness
Outside diameter
Metal tubing fluid lines are sized by wall thickness and
outside diameter in 1/32 inch increments
outside diameter in 1/16 inch increments
inside diameter in 1/16 inch increments
Flexible hose used in aircraft systems is classified in size according to the
inside diameter
outside diameter
wall thickness
Which of the following hose materials are compatible with phosphate-ester base hydraulic fluids?
1. Butyl.
2. Teflon.
3. Buna-N
4. Neoprene
1 and 2
2 and 4
1 and 3
A gas or fluid line marked with the letters PHDAN
is carrying a substance that cannot be made non-toxic
is a high pressure line. The letters mean Pressure High, Discharge at Nacelle
is carrying a substance which may be dangerous to personnel
Temperature is related to the average kinetic energy of the particles in an object due to their random motions through space.
True
False
Thermal expansion occurs when particles of matter move farther apart as temperature increase.
True
False
When temperature increases, distance between molecules ______________.
decreases
increases
stays the same
When temperature decreases, distance between molecules ____________.
increases
decreases
stays the same
flows faster.
direction to the objects (chassis) motion, produced by friction.
of thick members.
(airfoil). The front and rear wings of ground effect cars are shaped like inverted wings to create downforce
or negative lift.
The differences between Aviation Gasoline (AVGAS) and Motor Gasoline (MOGAS) are....
Select every option that applies
AVGAS is manufactured to a higher quality standard
MOGAS has a higher lead content
100LL AVGAS is coloured blue
AVGAS is more volatile than MOGAS
If you use motor gasoline (MOGAS) in an aircraft engine you risk...
Select all of the options that apply
Vapour locks
Lower power output
Spark plug fouling
Detonation
Aviation Turbine Fuel (AVTUR) has distinct properties. Some of these are...
Select all that apply
straw or clear coloured
smells like kerosene
green coloured
only available from tankers
An engine driven fuel pump...
cannot be turned off by the pilot
is turned on for landing, take off and other critical phases of flight only
exists to pressurise the fuel line in the event of a blockage
allows additional fuel to be provided in emergencies
Fuel strainers are located at what part of the fuel system?
the lowest point
the highest point
the point where there is the highest pressure
the point where there is the lowest pressure
Where an aircraft engine has a pump which supplies fuel to a header tank, and then fuel from that header tank flows into the engine/carburetor, that fuel system is known as...
gravity-fed
pump-fed
pump-free
normally aspirated
Engine primers are needed...
when there has been an engine failure
to inject fuel into the cylinders when starting a cold engine
when starting a warm engine, to ensure equal pressure in the cylinders
when starting when there has been a magneto failure
Which major structural area of an aircraft is used to create lift for the aircraft and also provide stability/support during flight?
Engines
Vertical Stabilizer
Wings
Landing Gear
Which aircraft structure is designed to reduce the left/right swaying motion of the tail?
Horizontal Stabilizer
Vertical Stabilizer
Wings
Fuselage
Engines provide the power needed for the forward ________ of the aircraft.
Drag
Thrust
Lift
Gravity
What is the aft section of the aircraft that mounts to the fuselage?
Empanada
Empoleon
Empennage
Rearnage
Which aircraft structure is designed to reduce unwanted up and down movements of the tail?
Empennage
Fuselage
Vertical Stabilizer
Horizontal Stabilizer
What are streamlined enclosures used primarily to house and protect the engine and its components, the landing gear when retracted and stowed in the wheel well, and the external fuel tanks if installed?
Fuselages
Empennages
Nacelles
Wings
Where would the Vertical Stabilizer & Horizontal Stabilizer be located at?
On the fuselage
On the empennage
On the wings
On the landing gear
An increase in load factor will cause an unmanned aircraft to
stall at a higher airspeed
have a tendency to spin
be easier to control
A stall occurs when the smooth airflow over the unmanned aircrafts wing/propeller(s) is disrupted and the lift reduces rapidly. This is caused when the wing/propeller
exceeds maximum allowable operating weight
exceeds the maximum speed
exceeds its critical angle of attack
exceeds the maximum rotational speed
The amount of excess load that can be imposed on the wing of an airplane depends upon the
position of the CG
speed of the airplane
abruptness at which the load is applied
Which of the following is true regarding weight and balance of small unmanned aircraft?
CG cannot change during flight
lateral CG is not important to small unmanned aircraft operations
operations outside weight and balance limitations may result in loss of control
CG stands for "constant grind" as in "I'm always on a CG."
When operating an aircraft, the remote PIC is responsible for using
weight and balance data from the factory
the most current weight and balance data
recent weight and balance data
outdated weight and balance data
To ensure that the unmanned aircraft center of gravity (CG) limits are not exceeded, follow the aircraft loading instructions specified in the
aircraft weight and balance handbook
pilots operating handbook or UAS flight manual
aeronautical information manual (AIM)
FAA handbook for all sUAS
What purpose does a rudder perform on an sUAS airplane?
the rudder controls yaw
the rudder controls bank
the rudder controls pitch
the rudder directly controls speed
Why must the rotor under load never be allowed to go slow?
The helicopter will stall
Blades will bend/warp and cause structural damage
you will be forced to jettison your load
The blades will "cone"
What does MSN stand for?
Maintenance Serial Number
Manufacturer Serial Number
Mailfunction Serial Number
Malpractice Serial Number
An aircraft can fly when_________________________.
it has a CAA certificate
it has an authorized release certficate from the applicable authority
it has a FAA certificate
When an operator gets an SB it means that he/she must_____________.
Service the aircraft
Change a component
Change the oil
Change the crewmembers
A SB is a notice that comes from _______________.
The manufacturer of the aircraft
The FAA
A local authority
The ICAO
When the operator gets a SB he/she will probably issue a________________________.
service order
engineer order
work order
any of the above could be issued
An operator needs a certificate of airworthiness,_____________.
after landing
before take off
before landing
The elevators helps an aircraft do what?
Tilt
Turn Right
Turn Left
Go up and down
What function does a rudder on an aircraft serve?
Helps slow down the plane
For speed
Allows the plane to turn
Provides lift
Define the principal of weight as it acts on an airplane
Downward force caused by lift
Downward force cause by gravity
Downward force caused by a forward motion
A force
Flight controls are operated by:
Cables, Drums and Pulleys
Flaps, Ailerons and Rudder
Cables, Pushrods and Bell cranks
What aircraft cleaning methods removes oil, grease, or carbon deposits and most soils, with the exception of corrosion and oxide films?
WET WASH
DRY WASH
POLISHING
What aircraft cleaning methods used to remove airport film, dust, and small accumulations of dirt and soil when the use of liquids is neither desirable nor practical?
WET WASH
DRY WASH
POLISHING
Restores the luster to painted and unpainted surfaces of the aircraft, and is usually performed after the surfaces have been cleaned?
WET WASH
DRY WASH
POLISHING
What is the meaning of X in the head of the bolt
Steel
Stainless Steel
Corrosion Resistant Steel
Aluminum Alloy
What is the meaning of a triangle in the head marking of a bolt
Steel
Corrosion Resistant Steel
Close Tolerance
Aluminum Alloy
What is the meaning of single dash in the head marking of the bolt?
Steel
Aluminum Alloy
Corrosion Resistant Steel
Close Tolerance
What is the meaning of double dash in the head marking of the bolt?
Steel
Aluminum alloy
Corrosion resistant steel
Close Tolerance
What are the two types of cooling systems:
Air and Vent
Vent and Electric
Liquid and Electric
Liquid and Air
True or False: An engines cooling system is designed to transfer excess heat from the engine to the atmosphere.
True
False
Another name for air resistance is...
Buoyancy
Streamline
Gravity
Drag
As the temperature of oil increases...
its viscosity increases and it flows more readily
its viscosity decreases and it flows more readily
its viscosity increases and it flows more slowly
its viscosity decreases and it flows more slowly
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