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WorksheetsAMT 105 Q3 & Q4
Total questions: 40
Worksheet time: 20mins
(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.
(8348) How may magnesium engine parts be cleaned?
Soak in a 20 percent caustic soda solution.
Spray with MEK (methyl ethyl ketone).
Wash with a commercial solvent, decarbonize, and scrape or grit blast.
(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.
(8357) The rust or corrosion that occurs with most metals is the result of
a tendency for them to return to their natural state.
blocking the flow of electrons in homogenous metals, or between dissimilar metals.
electron flow in or between metals from cathodic to anodic areas.
(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.
(8159.1) Use of which of the following generally yields the highest degree of aircraft leveling accuracy?
Plumb bob and chalk line.
Spirit level(s).
Electronic load cell(s).
(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.
