airframe and powerplant *general section
Unless otherwise specified, any values given for current or voltage in an AC circuit are assumed to be.....
effective values
Nickel cadmium batteries which are stored for a long period of time will show a low liquid level because...
electrolyte becomes absorbed into the plates
The maximum weight of an aircraft is the...
empty weight plus useful load
The purpose of stall strips on aircraft wings is to...
ensure that the wing root areas stall first
Fayed surfaces cause concern in chemical cleaning because of the danger of...
entrapping corrosive materials
When different rated capacitors are connected in parallel in a circuit, the total capacitance is... (CT=C1+C2+C3)
equal to the sum of all the capacitances
When inductors are connected in series in a circuit, the total inductance is (where the magnetic fields of each inductor do not affect the others) (LT=L1+L2+L3)
equal to the sum of the individual inductances
Generally speaking, bolt grip lengths should be...
equal to the thickness of the material which is fastened together
The maximum weight as used in weight and balance control of a given aircraft can normally be found...
in the aircraft specification or type certificate data sheet
The purpose of aircraft wing dihedral is to...
increase lateral stability
The desired effect of using winglets on an aircraft is to...
increase the lift to drag ratio
The basis for transformer operation in the use of alternating current is mutual.....
inductance
An increase in which of the following factors will cause an increase in the inductive reactance of a circuit?
inductance and frequency
The opposition offered by a coil to the flow of alternating current is called ( disregard resistance)
inductive reactance
(refer to fig. 7) if resistor R3 is disconnected at terminal D, what will the Ohm meter read?
infinite resistance
Flexible hose used in aircraft systems is classified in size according to the...
inside diameter
What type of corrosion attacks grain boundaries of aluminum alloys which are improperly or inadequately heat treated?
intergranular
Under the Federal Aviation Regulations, an aviation maintenance technician is required to perform maintenance on an aircraft so that it...
is at least equal to its original or properly altered condition
Transfer of electrical energy from one circuit to another without the aid of electrical connections...
is called inductions
In the reading of aircraft blueprints, the term "tolerance", used in association with aircraft parts or components,
is the difference between extreme permissible dimensions that a part may have and still be acceptable
When an airworthy (at the time of sale) aircraft is sold, the Airworthiness Certificate...
is transferred with the aircraft
A gas or fluid line marked with the letters PHDAN is...
is used to carry a hazardous substance
If the empty weight CG of an airplane lies within the empty weight CG limits...
it is not necessary to calculate CG extremes
Which statement relating to the residual magnetizing inspection method is true?
it may be used only with steels which have been heat treated for stress applications
Most modern aircraft are designed so that if all seats are occupied, full baggage, full fuel tanks, what will be the weight condition of the aircraft?
it will be in excess of maximum takeoff weight
(refer to fig. 45) What type of weld is shown at G?
lap
When calculating power in a reactive or inductive AC circuit, the true power is.......
less than the apparent power
(refer to fig. 1) When different rated capacitors are connected in series in a circuit, the total capacitance is.......
less than the capacitance of the lowest rated capacitor
(refer to fig. 3) When more than two inductors of different inductances are connected in parallel in a circuit, the total inductances is....
less than the inductance of the lowest rated inductor
In an AC circuit, the effective voltage is......
less than the maximum instantaneous voltage
In the theory of weight and balance, what is the name of the distance from the fulcrum to an object?
lever arm
In examining and evaluating a welded joint, a mechanic should be familiar with...
likely ambient exposure conditions and intended use of the part, along with type of weld and original part material composition
Zone numbers on aircraft blueprints are used to...
locate parts, sections and views on large drawings
An aircraft Type Certificate Data Sheet contains...
location of the datum
What tool is generally used to set a divider to an exact dimension?
machinist scale
Which of these metals is the most anodic?
magnesium
The positive aspects of human factor issues are referred to as the:
magnificent seven
The replacement of fabric covered parts such as wings, fuselages, stabilizers, or control surfaces is considered to be a...
major repair even though no other alteration or repair is performed
An FAA Form 337 is used to record and document...
major repairs and major alterations
Zero fuel weight is the...
maximum permissible weight of a loaded aircraft (passengers, crew and cargo without fuel
All of the following are consequences of human error except:
mental stressor
When an aircraft is positioned for weighing on scales placed under each landing gear wheel, which of the following may cause erroneous readings?
parking brakes set
Certificated mechanics, under their general certificate privileges, may...
perform 100 hour inspection of instruments
An Airworthiness Directives requires that a propeller be altered. Certificated mechanics could...
perform and approve the work for return to service if it is a minor alteration
(refer to fig. 20) Troubleshooting an open circuit with a voltmeter as shown in this circuit will...
permit the battery voltage to appear on the voltmeter
The amount of electricity a capacitor can store is directly proportionate to the.....
plate area and inversely proportional to the distance between the plates.
When parking a nose wheel type airplane after taxiing (or towing), the nose wheel should be left...
pointed straight ahead
An airplane wing is designed to produce lift resulting from:
positive air pressure below the wing's surface and negative air pressure above the wing's surface along with the downward deflection of air
The primary purpose of providing suitable bends in fluid and pneumatic metal tubing runs is to...
prevent excessive stress in the tubing
The purpose of providing a space underneath the plates in a lead acid battery's cell container is to ...
prevent sediment buildup from contacting the plates and causing a short circuit
(refer to fig. 18) The control valve switch must be placed in the neutral position when the landing gears are down to:
prevent the warning horn from sounding when the throttles are closed
The parts departments profit is 12 percent on a new magneto. How much does the magneto cost if the selling price is $ 145.00?
$130.00
In a balance computation of an aircraft from which an item located aft of the datum was removed, use...
(-) weight x (+) arm (-) moment
An aircraft with an empty weight of 1,500 pounds and an empty weight CG of +28.4 was altered as follows: 1. Two 12 pound seats located at +68.5 were removed: 2. Structural modifications weighing +28 pounds were made at +73: 3. A seat and safety belt weighing 30 pounds were installed at +70.5: 4. Radio equipment weighing 25 pounds was installed at +85. What was the new empty weight CG?
+30.30
A certificated mechanic with a powerplant rating may perform the...
100 hour inspection required by the Federal Aviation Regulations on a powerplant or any component thereof and approve and return the same to service
Scratches or nicks on the straight portion of aluminum alloy tubing may be repaired if they are no deeper than...
10 percent
(refer to fig. 56) Compute the area of the trapezoid.
10 square feet
What power of 10 is equal to 1,000,000,000...
10 to the ninth power
When approaching the front of an idling jet engine, the hazard area extends forward of the engine approximately...
25 feet
On a fillet weld, the penetration requirement includes what percentage(s) of the base metal thickness?
25 to 50%
A circuit has an applied voltage of 30 volts and a load consisting of a 10 Ohm resistor in series with a 20 Ohm resistor. What is the voltage drop across the 10 Ohm resistor?
10 volts
When approaching the rear of an idling turbojet engine, the hazard area extends aft of the engine approximately...
100 feet
How many amperes will a 28 volt generator be required to supply to a circuit containing 5 lamps in parallel, 3 of which have a resistance of 6 Ohms each and 2 of which have a resistance of 5 Ohms each?
25.23 amps
Refer fig. 41) Determine how much fuel would be required for a 30 min reserve operating at 2,300 RPM.
25.3 pounds per hour
What is the square root of 16 raised to the fourth power
256
(refer to fig. 38) An aircraft reciprocating engine has a 2,800 cubic inch displacement and develops 2,000 brake horse power at 2,200 RPM. What is the brake mean effective pressure?
257.5
A six cylinder engine with a bore of 3.5 inches, a cylinder height of 7 inches and a stroke of 4.5 inches will have a total piston displacement of...
259.77 cubic inches
What is the operating resistance of a 30 watt light bulb designed for a 28 volt system?
26 Ohms
When taxiing (or towing) an aircraft, an alternating red and green light from the control tower means...
OK to proceed but use extreme caution
Which statement is true regarding an orthographic projection?
One view, two view and three view drawings are the most common
Which is an appliance major repair?
Overhaul of a hydraulic pressure pump
Which of the following includes all the regulatory definitions of "maintenance"?
Overhaul, repair, parts replacement, inspection, and preservation.
(refer to fig. 16) When electrical power is applied to the bus, which relays are energized?
PCC and TCC
Excessive stress on fluid or pneumatic metal tubing caused by expansion and contraction due to temperature changes can best be avoided by...
Providing bends in the tubing
How long are AD compliance records required to be kept?
They shall be retained, and then transferred with the aircraft when sold
For which of the following conditions would a water break test be conducted?
To make certain that a bare metal surface is thoroughly clean
What is the purpose of the ground symbol used in electrical circuit diagrams?
To show that there is a return path for the current between the source of electrical energy and the load
Which is correct concerning a parallel circuit?
Total resistance will be smaller than the smallest resistor
What is the class of working drawings that is the description / deception of a single part?
detail drawing
Working drawings may be divided into three classes. They are...
detail drawings, assembly drawings and installation drawings
The temperature to which humid air must be cooled at constant pressure to become saturated is called...
dew point
Which tool can be used to measure the alignment of a rotor shaft or the plane of rotation of a disk?
dial indicator
Which of the following is not considered a method of heat transfer?
diffusion
The measurements showing the ideal or "perfect" sizes of parts on drawings are called...
dimensions
A hydraulic system schematic drawing would indicate the...
direction of fluid flow through the system
The boiling point of a given liquid varies...
directly with pressure
What type of measurement is used to designate arm in weight and balance computation?
distance
If an aircraft CG is found to be at 24 percent of MAC, that 24 percent is an expression of the...
distance from the LEMAC
Identify the correct statement.
dividers do not provide a reading when used as a measuring device
(refer to fig. 45) What type of weld is shown at B?
double butt
Many areas of aviation have shifted their focus from eliminating error is:
preventing and managing errors
Where are technical descriptions of certificated propellers found?
propeller Type Certificate Data Sheets
During an annual inspection, if a defect is found which makes the aircraft non-airworthy, the person disapproving must...
provide a written notice of the defect to the owner
Aviation maintenance alerts...
provides information about aircraft problems and suggested corrective actions
Alclad is a metal consisting of...
pure aluminum surface layers on an aluminum alloy core
Characteristics of detonation are...
rapid rise in cylinder pressure, excessive cylinder head temperature, and a decrease in engine power
Jet fuel number identifiers are...
rapid rise in cylinder pressure, excessive cylinder head temperature, and a decrease in engine power
Which of the following can provide the empty weight of an aircraft if the aircrafts weight and balance records become lost, destroyed or otherwise inaccurate?
re-weighing aircraft
When computing weight and balance, an air plane is considered to be in balance when...
the average moment arm of the loaded airplane falls within its CG range
(refer to fig. 16) What will be the effect if the PCO relay fails to operate when the left hand tank is selected is in the...
the fuel pressure cross feed valve open light will not open
During starting of a turbojet power plant using a compressed air starter, a hot start occurrence was recorded. Select what happened from the following...
the fuel/air mixture was excessively rich
When referring to an electrical circuit diagram, what point is considered to be at zero voltage?
the ground reference
When we think of aviation safety in a contemporary way, human error is:
the intervention point
In the four digit aluminum index system number 2024, the first digit indicates...
the major alloying element
The useful load of an aircraft is the difference between...
the maximum take off weight and basic empty weight
When reading a blueprint, a dimension is given as 4,387 inches + .005 - .002. Which statement is true?
the minimum acceptable size is 4.385
Which of the following statements is true regarding minimum allowable bend radii for 1.5 inches OD or less aluminum alloy and steel tubing of the same size?
the minimum radius for steel is greater than aluminum
In most aircraft hydraulic systems, two piece tube connectors consisting of a sleeve and a nut are used when a tubing is required. The use of this type of connector eliminates...
the possibility of reducing the flare thickness by wiping or ironing during the tightening process
Which statement concerning Bernoulli's principle is true?
the pressure of a fluid decreases at points where the velocity of the fluid increase
A repair, as performed on an airframe, shall mean...
the restoration of the airframe to a condition for safe operation after damage or deterioration.
What determines whether the value of the moment is preceded by a plus (+) or a minus (-) sign in aircraft weight and balance?
the result of a weight being added or removed and its location relative to this datum
Which of the following is a main determinant of the dwell time to use when conducting a dye or fluorescent penetrant inspection?
the size and shape of the discontinuities being looked for
Which is classified as a major repair?
the splicing of the skin sheets
A hung start in a jet engine is often caused by...
the starter cutting off too soon
What determines the amount of current which will flow through a battery while it is being charged by a constant voltage source?
the state of charge of the battery
Galvanic corrosion is likely to be most rapid and severe when...
the surface area of the anodic metal is smaller than the surface area of the cathodic metal
A person should approach or leave a helicopter in the pilots field of vision whenever the engine in order to avoid...
the tail rotor
What effect will aviation gasoline mixed with jet fuel have on turbine power plant efficiency?
the tetraethyl lead in the gasoline forms deposits on the turbine blades.
The total piston displacement of a specific engine is...
the volume displaced by all pistons during one revolution of the crankshaft
Select a characteristic of a good gas weld,
the weld should taper smoothly into the base metal
The clearance between the piston rings and the ring lands is measured with a...
thickness gauge
The side clearance of piston rings are measured with a...
thickness gauge
The twist of a connecting rod is connected is checked by installing push fit arbors in both ends, supported by parallel steel bars on a surface plate. Measurements are taken between the arbor and the parallel bar with a...
thickness gauge
Which tool is used to measure the clearance between a surface plate and a relatively narrow surface being checked for flatness?
thickness gauge
Why is a mechanic applicant issued a temporary certificate after successful completion of the required tests?
to allow for review of his/her application and supplementary
Why is it considered good practice to normalize a part after welding?
to relieve internal stresses developed within the base metal
Why is steel tempered after being hardened?
to relieve its internal stresses and reduce its brittleness.
Why is the ethylene dibromide added to aviation gasoline?
to scavenge lead oxide from the cylinder combustion chamber
In order to reconstruct lost or destroyed aircraft records, what is it necessary to establish?
total time in service of the airframe
When a charging current is applied to a nickel cadmium battery, the cells emit gas only...
toward the end of the charging cycle
For sketching purposes, almost all objects are composed of one or some combination of six basic shapes; these include the...
triangle, circle, cube, cylinder, cone and sphere
Schematic diagrams are best suited for which of the following?
troubleshooting system malfunctions
(refer to fig. 22) Which illustration is correct concerning bias application and current (positive charge) flow?
1
(refer to fig. 30) Identify the bottom view of the object.
1
Select the correct statement in reference to flare fittings...
1
Which statement(s) about military standard (MS) flareless fittings is / are correct? 1. During installation, MS flareless fittings are normally tightend by turning the nut a specified amount after the sleeve and sealing surface have met contact, rather than being torqued.
1
Who has the authority to approve for return to service a powerplant or propeller or any part thereof after a 100 hour inspection? 1. A mechanic with a power plant rating 2. Any certificated repairman. 3. A non - certified mechanic working under the supervision of a certified mechanic with A&P ratings
1
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
Which of the following statements is / are generally true regarding the charging of several aircraft batteries together? 1. Batteries of different voltages (but similar capacities) can be connected in series with each other across the charger, and charged using the constant current method. 2.Batteries of different ampere-hour capacity and same voltage can be connected in parallel with each other across the charger, and charged using the constant voltage method. 3. Batteries of the same voltage and same ampere hour capacity must be connected in series with each other across the charger, and charged using the constant current method.
1 and 2
Which of the following may a certificated airframe and powerplant mechanic perform on aircraft and approve for return to service? 1. a 100 hour inspection. 2. an annual inspection. 3. a progressive inspection.
1 and 3
Which of the following are desired effects of using Alodine on aluminum alloy? 1. A slightly rough surfaces 2. Relieved surface stresses 3. A smooth painting surface 4. Increased corrosion resistance
1 and 4
(refer to fig. 34) What would be the minimum diameter of 4130 round stock required the construction of the clevis that would produce a machined surface?
1 inch
What force is exerted on the piston in a hydraulic cylinder if the area of the piston is 1.2 square inches and the fluid pressure is 850 PSI?
1,020 pounds
In physics which of the following factors are necessary for determining power? 1. Force exerted. 2. Distance the force moves. 3. Time required to do the work.
1,2 and 3
Which of the following are sometimes used as authorization to deviate from an aircraft's original type design? 1. FAA Form 337 2. Supplemental Type Cert6ificate 3. Airworthiness Directive 4. Technical Standard Order
1,2 and 3
The action required by an AD may take what form? 1. Inspection. 2. Part(s) replacement. 3. Design modification. 4. Change in operating procedure(s). 5. Overall change in the content, form and disposition of aircraft maintenance records.
1,2,3 and/or 4
Which of the following defects are not acceptable for metal lines? 1. cracked lines 2. seams 3. dents in the heel of a bend less than 20% of the diameter 4. scratches / nicks on the inside of a bend less than 10% of wall thickness 5. A dent of more than 20% of the tube diameter is not acceptable
1,2,3,5
Which of the following describe the effects of annealing steel and aluminum alloys? 1. Decrease in internal stress. 2. Softening of the metal. 3. Improved corrosion resistance.
1,2.
Which of the following methods may be suitable to use to detect cracks open to the surface in aluminum forgings and castings? 1. Dye penetrating inspection 2. magnetic particle inspection 3. metallic ring (coin tap) inspection 4. Eddy current inspection 5. Ultrasonic inspection 6. Visual inspection
1,4,5,6,
Select the decimal which is most nearly equal to 77/64.
1.2031
(refer to fig. 13) Determine the total current flow in the circuit.
1.4 amperes
(refer to fig. 47) What is the measurement reading on the Vernier caliper scale?
1.436 inches
An aircraft had an empty weight of 2,886 pounds with a moment of 101,673.78 before several alterations were made. The alterations included: 1. removing 2 passenger seats (15 pounds each) at +71 2. installing a cabinet (97 pounds) at +71: 3. installing a seat and a safety belt (20 pounds) at +71: 4. installing radio equipment (30 pounds) at +94. The alterations caused the new empty weight CG to move...
1.62 inches aft of the original empty weight CG
Which alternative answer is equal to 16,300?
1.63 X10 to the fourth power
Select the fractional equivalent for a 0.0625 inch thick sheet of aluminum.
1/16
(refer to fig. 36) The diameter of the holes in the finished object is...
1/2 inch
One characteristic of a good weld is that no oxide should be formed on the base metal at a distance from the weld of more than...
1/2 inch
Select the fraction which is equal to 0.025.
1/40
Which requires the most electrical power?
1/5 horsepower, 24 volt motor which is 75% efficient
Solve the equation: 1/2 ( -30+34) 5 =
10
(refer to fig. 8) With an Ohmeter connected into the circuit as shown, what will the Ohmeter read?
10 Ohms
The result of 7 raised to the third power plus the square root of 39 is equal to...
349.24
Which will weigh the least?
35 parts of dry air and 65 parts of water vapor
A 48 volt source is required to furnish 192 watts to a parallel circuit consisting of three resistors of equal value. What is the value of each resistor?
36 Ohms
How much work input is required to lower ( not drop) a 120 pound weight from the top of a 3 foot table to the floor?
360 foot pounds
When flaring aluminum tubing for use with AN fittings, the flare angle must be...
37 degrees
(refer to equation 8395-10) What is the volume of a sphere with a diameter of 4.5 inches?
381.7 cubic inches
1.21875 is equal to...
39/32
A rectangular shaped fuel tank measures 37 - 1/2 inches in length, 14 inches in width, and 8-1/4 inches in depth. How many cubic inches are with in the tank?
4,331.25
What force must be applied to roll a 120 pound barrel up an inclined plane 9 feet long to a height of 3 feet (disregard friction)? L / I=R / E L = Length of ramp, measured along the slope I = Height of ramp R = Weight of object to be raised or lowered. E = Force required to raise or lower object.
40 pounds
Find the square root of 1,746
41.7852
A pinion gear with 14 teeth is driving a spur gear with 42 teeth at 140 RPM. Determine the speed of the pinion gear.
420 RPM
Which type crack can be detected by magnetic particle inspection using either circular or longitudinal magnetization?
45 degrees
How much power must a 24 volt generator furnish to a system which contains the following loads? one motor (75 % efficient) 1/5 HP 3 position lights 20 watts each 1 heating element 5 amp 1 anticollision light 3 amp
450 watts
A rectangular shaped fuel tank measures 27 1/2 inches in length, 3/4 foot in width and 8 1/4 inches in depth. How many gallons will the tank contain? (231 cu in = 1 gal.)
8.83
An engine develops 108 horse power at 87 percent power, what horse power would be developed at 65 percent power?
81
Sixty five engines are what percentage of 80 engines?
81 percent
Solve the equation: 4-3[ -6(2+3) + 4] =
82
an engine that weighs 350 pounds is removed from an aircraft by means of a mobile hoist. The engine is raised 3 feet above its attachment mount, and the entire assembly is then moved forward 12 feet. A constant force of 70 pounds is required to move the loaded hoist. What is the total work input required to move the hoist?
840 foot pounds
Express 7/8 as a percent.
87.5 percent
A 1 horse power, 24 volt DC electric motor that is 80% efficient requires 932.5 watts. How much power will a 1 horse power, 12 volt DC electric motor that is 75% efficient require? (1 horse power = 746 watts)
944.6 watts
The aluminum code number 1100 identifies what type of aluminum?
99% commercially pure aluminum
The method used to rapidly charge a nickel cadmium battery utilizes...
constant voltage and varying voltage
Corrosion caused by galvanic action is the result of...
contact between two unlike metals
What is the likely result of servicing and charging nickel cadmium and lead acid batteries together in the same service area?
contamination of both types of batteries
Generally, when an induction fire occurs during starting of a reciprocating engine, the first course of action should be to...
continue cranking and start the engine if possible
A certain amount of slack must be left in a flexible hose during installation because, when under pressure, it...
contracts in length and expands in diameter
Caustic cleaning products used on aluminum structures have the effect of producing...
corrosion
Which tubing's have the characteristics (high strength), abrasion resistance) necessary for use in a high pressure (3000 psi) hydraulic system for operation of landing gear and flaps?
corrosion resistant steel annealed or 1/4H
Which condition indicates a part has cooled too quickly after being welded?
cracking adjacent to the weld
One way of obtaining increased resistance to stress corrosion cracking is by...
creating compressive stresses (via shot peening) on the metal surface
The useful load of an aircraft consists of the...
crew, usable fuel, passengers and cargo
(refer to fig. 16) The TCO relay will operate if 24 volts DC is applied to the bus and the fuel tank selector is in the...
crossfeed position
When accomplishing loading computations for a small aircraft, necessary information obtained from the weight and balance records would include...
current empty weight and empty weight CG
The end of charge voltage of a 19 cell nickel cadmium, measured while still on charge,
depends upon its temperature and the method used for charging
In the process of weighing an airplane toward obtaining the CG, the arms from the weighing always extend...
parallel to the centerline of the airplane
The pattern for an inclusion is a magnetic particle buildup forming...
parallel lines
(refer to equation 8393-1) Which of the figures is using scientific notation?
1
(refer to equation 8393-2) Which alternative answer is equal to 5.59?
1
An aircraft with an empty weight of 1,800 pounds and an empty weight CG of +31.5 was altered as follows: 1. 2 15 pound passenger seats located at +72 were removed: 2. Structural modifications increasing the weight 14 pounds were made at +76: 3. A seat and safety belt weighing 20 pounds were installed at +73.5: 4. Radio equipment weighing 30 pounds was installed at +30. What is the new empty weight CG?
+31.61
An aircraft with an empty weight of 2,100 pounds and an empty weight CG +32.5 was altered as follows: 1. Two 18 pound passenger seats located at +73 were removed: 2. structural modifications were made at +77 increasing weight by 17 pounds: 3. A seat and safety belt weighing 25 pounds were installed at +74.5: 4. Radio equipment weighing 35 pounds was installed at +95. What is the new empty weight CG?
+33.68
If a 40 pound generator applies +1400 inch pounds to a reference axis, the generator is located...
+35 from the axis
Find the empty weight CG location for the following tricycle gear aircraft. Each main wheel weighs 753 pounds, nose wheel weighs 22 pounds, distance between nose wheel and main wheels is 87.5 inches, nose wheel location is +9.875 inches from datum, with 1 gallon of hydraulic at -21.0 inches included in the weight scale.
+96.11 inches
(refer to fig. 62,62a and 62b as necessary) Using only the information given (when bend allowance, set back, etc. have been calculated) which doubler is it possible to construct and install?
-101
Refer to fig. 62) The -100 in the title block (area 1) is applicable to which doubler part number (s)?
-101
(refer to fig. 62, 62a and 62b as necessary) Which doubler (s) require(s) heat treatment before installation?
-102
Solve the equation: [ (4x-3) + (-9X2)] / 2=
-15
(refer to fig. 59) Solve the equation.
-5.20
Solve the equation: -6[-9( -8 + 4) - 2(7+3)] =
-96
Which number represents the Vernier scale graduation of a micrometer?
.0001
Find the square root of 124.9924
.000347
The number 3.47 X 10 to the negative fourth power is equal to?
.000347
What is the allowable manufacturing tolerance for a bushing where the outside dimensions shown on the blueprint are1.0625 + .0025 - .0003?
.0028
(Refer to fig. 53) Solve the equation.
.0419
(refer to fig. 49) The measurement reading on the micrometer is...
.2792
(refer to fig. 48) What does the micrometer read?
.3004
What is the total capacitance of a circuit containing three capacitors with capacitances of .25 microfarad, .03 microfarad and .12 microfarad respectively? ( CT=C1+C2+C3)
.4 uf
Find the square root of 1,824.
.42708 X 10 to the second power
A certain aircraft bolt has an overall length of 1 - 1/2 inches, with a shank length of 1 - 3/16 inches, and a threaded portion length of 5/8 inch. what is the grip length?
.5625 inch
Find the value of 10 raised to the negative sixth power...
0.0000001
(refer to fig. 34) What is the dimension of the chamfer?
0.065 x 45 degrees
(refer to fig. 46) The measurement reading on the illustrated micrometer is...
0.2851
(refer to fig. 34) What is the maximum diameter of the hole for the clevis pin?
0.3175
The radius of a piece of round stock is 7/32. Select the decimal which is most nearly equal to the diameter.
0.4375
Which decimal is most nearly equal to a bend radius of 31/64?
0.4844
A lead acid battery with 12 cells connected in series (no load voltage = 2.1 volts per cell) furnishes 10 amperes to a load of 2 Ohms resistance of the battery in this instance is...
0.52 Ohm
The material specifications for a certain aircraft require that a placement oil line be fabricated from 3/4 - inch 0.072 5052-0 aluminum alloy tubing. What is the inside dimension of this tubing?
0.606 inch
If three resistors of 3 Ohms, 5 Ohms and 22 Ohms are connected in a series in a 28 volt circuit, how much current will flow through the 3 Ohm resistor?
0.93 ampere
Certificated mechanics with a powerplant rating may perform the...
100 hour inspection required by the Federal Aviation Regulations on a powerplant, propeller, or any component thereof, and may release the same to service.
A complete detailed inspection and adjustment of the valve mechanism will be made at the first 25 hours after the engine has been placed in service. Subsequent inspections of the valve mechanism will be made each second 50 hour period. From the above statement, at what intervals should you check the thrust bearing nut for tightness?
100 hours
A 12 volt electric motor has 1,000 watts input and 1 horsepower output. Maintaining the same efficiency, how much input power will a 24 volt, 1 horsepower electric motor require?
1000 watts
(refer to fig. 60) Solve the equation.
11.9
A blueprint shows a hole of 0.17187 to be drilled. Which fraction size drill bit is most nearly equal?
11/64
A rectangular shaped fuel tank measures 60 inches in length, 30 inches in width and 12 inches in depth. How many cubic feet are with in the tank?
12.5
The following alteration was performed on an aircraft: a model B engine weighing 175 pounds was replaced by a model D engine weighing 185 at -62.00 inch station. The aircraft weight and balance records show the previous empty weight to be 998 pounds and an empty weight CH of 13.48 inches. What is the new empty weight CG?
12.73 inches
Solve the equation. (100 + 36-16)
120
What is the maximum duration of a temporary certificate?
120 days
The following is a table of airspeed limits as given in an FAA issued aircraft specification: Normal operating speed............................260 knots Never exceed speed....................................293 knots Maximum landing gear operation speed..174 knots Maximum flap extended speed..................139 knots The high end of the white arc on the airspeed instrument would be at...
139 knots
The issuance of Airworthiness Certificate is governed by...
14 CFR Part 21
Which regulation provides information regarding instrument range markings for an airplane certificated in the normal category?
14 CFR Part 23
Which regulation provides the airworthiness standards for an aircraft certificated in the normal category?
14 CFR part 23
Each person performing an annual or 100 hour inspection shall use a checklist that contains at least those items in the appendix of...
14 CFR part 43
What part of the Federal Aviation Regulations prescribes the requirements for issuing mechanic certificates and associated ratings and the general operating rules for the holders of these certificates and ratings?
14 CFR part 65
(refer to fig. 58) Solve the equation.
14.002
How much current does a 30 volt motor, 1/2 horsepower, 85 percent efficient draw from the bus? (note: 1 horsepower = 746 watts)
14.6 amperes
What is the speed of a spur gear with 42 teeth driven by a pinion gear with 14 teeth turning 420 RPM?
140 RPM
(refer to fig. 61) The amount of force applied to rope A to lift the weight is...
15 pounds
Check thrust bearing nuts for tightness on new or newly overhauled engines at the first 25 hours after the engine has been placed in service. Subsequent inspections of the thrust bearing nuts will be made at each third 50 - hour inspection. From the above statement, at what intervals should you check the thrust bearing nut for tightness?
150 hours
When an empty aircraft is weighed, the combined net weight at the main gears is 3,540 pounds with an arm of 195.5 inches. At the nose gear, the net weight is 2,322 pounds with an arm of 83.5 inches. The datum lines is forward of the nose of the aircraft. What is the empty CG of the aircraft?
151.1
As weighed, the total empty weight of an aircraft is 5,862 pounds with a moment of 885,957. However, when the aircraft was weighed, 20 pounds of alcohol were on board at +84 and 23 pounds of hydraulic fluid were in a tank located at +101. What is the empty weight CG of the aircraft?
151.365
Which of the following is equal to the square root of (-1776) + (-2)-632?
16
(refer to fig. 14) The total resistance of the circuit is...
17 Ohms
(refer figure 2) What is the total capacitance of a circuit containing three capacitors with capacitances of .02 microfarad, .05 microfarad and .10 microfarad respectively?
170 uf
(refer to fig. 63) An aircraft has a total time in service of 468 hours. The Airworthiness Directive given was initially completed with at 454 hours in service. How many additional hours in service may be accumulated before the Airworthiness Directive must be complied with...
186
What is the speed ratio of a gear with 36 teeth meshed to a gear with 20 teeth?
1:1.8
(refer to fig. 21) Which symbol represents a variable resistor?
2
(refer to fig. 26) Which of the logic gate output conditions is correct with respect to the given inputs?
2
(refer to fig. 44) Select the illustration which depicts a cold weld.
2
(refer to fig. 9) How many instruments (voltmeters and ammeters) are installed correctly?
2
(refer to fig.28) Identify the bottom view the object shown.
2
An aircraft owner was provided a list of discrepancies on an aircraft that was not approved for return to service after an annual inspection. Which statement is correct concerning who may correct the discrepancies?
2
The speed of sound in the atmosphere is most affected by variations in which of the following? 1. sound frequency (cps). 2. Ambient temperature. 3. Barometeric pressure
2
What is/are the appropriate action(s) concerning minor repairs performed on certified aircraft?
2
Which statement(s) is/are true regarding tie down of small aircraft? 1. manila (hemp) rope has a tendency to stretch when it gets wet. 2. Nylon or Dacron is preferred to manila rope. 3. The aircraft should be headed downwind in order to eliminate or minimize wing lift. 4. Leave the nose wheel or tail wheel unlocked.
2
Which of the following are acceptable to use when utilizing chemical cleaning and/or de-painting agents on aircraft? 1. Synthetic fiber wiping clothes when using a flammable agent. 2. Cotton fiber wiping clothes when using a flammable agent. 3. Atomizing spray equipment
2 and 3
Which requires the most electrical power during operation? (1 horse power = 746 watts)
2 lights requiring 3 amperes each in a 24 - volt parallel system
(refer to fig. 38) An aircraft reciprocating engine has a 2,800 cubic inch displacement, develops 2,000 brake horsepower, and indicates 270 brake mean effective pressure. What is the engine speed (RPM)?
2,100
Liquid penetrant inspection methods may be used which of the following? 1. porous plastics 2. ferrous metals 3. nonferrous metals 4. smooth unpainted wood 5. nonporous plastics
2,3,5
.002kv equals
2.0 volts
(refer to fig. 37) The vertical distance between the top of the plate and the bottom of the lowest 15/64 inch hole is...
2.367
Two boxes which weigh 10 pounds and 5 pounds are placed in an airplane so that their distance aft from the CG are 4 feet and 2 feet respectively. How far forward of the CG should a third box, weighing 20 pounds, be placed so that the CG will not be changed?
2.5 feet
What is the size sheet of metal is required to fabricate a cylinder 20 inches long and 8 inches in diameter? (note: C=pie X D)
20 inches X 25 - 9/64 inches
An airplane flying a distance of 750 miles used 80 gallons of gasoline. How many gallons will it need to travel 2,500 miles?
200
A four cylinder aircraft engine has a cylinder bore of 3.78 inches and is 8.5 inches deep. With the piston on bottom center, the top of the piston measures 4.0 inches from the bottom of the cylinder. What is the approximate piston displacement of this engine?
200 cubic inches
(refer to fig. 12) Find the total resistance of the circuit.
21.2 Ohms
(refer to fig, 38) An aircraft reciprocating engine has a 1,830 cubic inch displacement and develops 1,250 brake horsepower at 2,500 RPM. What is the brake mean effective pressure?
217
Solve the equation: (-3+2)(-12 -4) + (-4 + 6) X 3 =
22
A 24 volt source is required to furnish 48 watts to a parallel circuit consisting of 2 resistors of equal value of each resistor? ( RT= E2/P)
24 Ohms
(refer to fig. 11) Find the voltage across the 8 Ohm resistor.
24 volts
A 24 volt source is required to furnish 48 watts to a parallel circuit consisting of 4 resistors of equal value. What is the voltage drop across each resistor?
24 volts
(refer to fig. 39) Determine the maximum length of a No. 12 single cable that can be used between a 28 volt bus and a component utilizing 20 amperes continuous load in free air with a maximum acceptable 1 volt drop.
26.5 feet
Find the cube of 64.
262,144
(refer to fig. 16) With power to the bus and the fuel selector switched to the right hand tank, how many relays in the system are operating?
3
(refer to fig. 17) Which of the components is a potentiometer?
3
(refer to fig. 27) In the isometric view of a typical aileron balance weight, identify the view indicated by the arrow.
3
(refer to fig. 29) Identify the left side view of the object shown.
3
(refer to fig. 33) Which material section line symbol indicates cast iron?
3
(refer to fig. 42) Which of the bolt head code markings shown identifies a corrosion resistant AN standard steel bolt?
3
(refer to fig. 43) Identify the clevis bolt illustrated.
3
(refer to fig. 44) Identify the weld caused by an excessive amount of acetylene.
3
(refer to fig. 50) Identify the signal to engage rotor on a rotorcraft.
3
(refer to fig. 51) Which marshalling signal should be given if a taxiing aircraft is in imminent danger of striking an object?
3
(refer to fig. 62, 62a and 62b as necessary) How many parts will need to be fabricated by the mechanic in the construction and installation of one doubler?
3
How many of these factors are considered essential knowledge for x-ray exposure? 1. Processing of the film 2. Material thickness and density 3. Exposure distance and angle 4. Film characteristics
3
Which of the following are commonly used as rectifiers in electrical circuits? 1. Anodes 2. Cathodes 3. Diodes
3
Which of the following materials may be inspected using the magnetic particle inspection method? 1. Magnesium alloys 2. Aluminum alloys 3. Iron alloys 4. Copper alloys 5. Zinc alloys
3
Which of the following occurs when a mechanical force is repeatedly applied to most metals at room temperature, such as rolling, hammering or bending?
3
Which of the following terms is / are used to indicate specific measured distances from the datum and / or other points identified by the manufacturer, to points in or on the aircraft? 1. Zone numbers 2. Reference numbers 3.Station numbers
3
refer to fig. 35) Identify the extension line.
3
( refer to fig. 6) If resistor R5 is disconnected at the junction of R4 and R3 as shown what will the Ohm reader read?
3 Ohms
(refer to fig 5) What is the impedance of an AC series consisting of an inductor with a reactance of 10 Ohms, a capacitor with a reactance of 4 Ohms and a resistor with a resistance of 8 Ohms?
3 Ohms
Which of the following are acceptable to use in cleaning anodizing surfaces? 1. steel wool 2. brass wire brush 3. aluminum wool 4. stainless steel wire brush 5. fiber bristle brush
3 and 5
If an engine is turning 1,965 rpm at 65 percent power, what is the maximum rpm?
3,023
(refer to fig. 31) What are the proper procedural steps for sketching repairs and alterations?
3,1,4,2
From the following sequences of steps, indicate the proper order you would use to make a single flare on a piece of tubing: 1. Place the tube in the proper size hole in the flaring block. 2. Project the end of the tube slightly from the top of the flaring tool, about the thickness of a dime. 3. slip the fitting nut and sleeve on the tube. 4. Strike the plunger several light blows with a light weight hammer or mallet and turn the plunger one half turn after each blow. 5. Tighten the clamp bar securely to prevent slippage. 6. Center the plunger or flaring pin over the tube.
3,1,6,2,5,4.
(refer to fig. 10) What is the measured voltage of the series parallel circuit between terminals A and B?
3.0 volts
(refer to fig. 11) Find the total current flowing in the wire between points C and D.
30 amperes
How long does the holder of a certificate issued under 14 CFR part 85 have to notify the FAA after any change in permanent mailing address?
30 days
What aluminum alloy designations indicate that the metal has received no hardening or tempering treatment?
3003-F
What is the surface area of a cube where a side (edge) measures 7.25 inches?
315.375 sq. in
Solve the equation (64 x 3/8) / 3/4 =
32
What is the square root of 4 raised to the fifth power?
32
What is the ratio of 10 feet to 30 inches?
4:1
(refer to fig. 52) solve the equation.
5
(refer to fig. 16) Energize the circuit with the fuel tank selector switch selected to the left hand position. Using the schematic, identify the switches that will change position.
5,6,11,12,13,15,16
(refer to fig. 34) Using the information, what size drill would be required to drill the clevis bolt hole?
5/16 inch
The maximum distance between end fittings to which a straight hose assembly is to be connected is 50 inches. The minimum hose length to make such a connection should be...
52 - 1/2 inches
(refer to fig. 54) Compute the area of the trapezoid.
52.5 square feet
(refer to fig. 41) Determine the fuel consumption with the engine operating at cruise, 2,350 RPM.
55.3 pounds per hour
An aircraft as loaded weighs 4,954 pounds at a CG of +30.5 inches. The CG range is +32.0 inches to 42.1 inches. Find the minimum weight of the ballast necessary to bring the CG within the CG range. The ballast arm is +162 inches.
57.16 pounds
What is the ratio of a gasoline fuel load of 200 gallons to one of 1,680 pounds?
5:7
(refer to fig. 55) Find the area of the triangle shown.
6 square inches
Datum is forward of the main gear center point 30.24 in. Actual distance between tail gear and main gear center point 360.26in. Net weight at right main gear 9,980 lb. Net weight at left main gear 9,770 lb. Net weight at tail gear 1,970 lb. These items were in the aircraft when weighed: 1. Lavatory water tank full (34 pounds at +352) 2. Hydraulic fluid ( 22 pounds at -8) 3. Removable ballast ( 146 pounds at +380) What is the empty weight CG of the aircraft described above...
60.31 inches
If a double acting actuating cylinder in a 3000 PSI system has a piston with a surface of three sq. inches on the extension side, and a rod with a cross section area of one SQ inch attached to the piston on the other side, approx. how much force will the actuator be able to produce when retracting?
6000 pounds
Find the square root of 3,722.1835.
61.0097
Express 5/8 as a percent.
62.5 percent
(refer to fig. 57) Determine the area of the triangle formed by points A,B and C. A to B = 7.5 inches A to D = 16.8 inches
63 square inches
If the volume of a cylinder with the piston at bottom center is 84 cubic inches and the piston displacement is 70 cubic inches, then the compression ratio is...
6:1
What is the piston displacement of a master cylinder with a 1.5 inch diameter bore and a piston stroke of 4 inches?
7.0686 cubic inches
(refer to fig. 40) Determine the proper tension for a 1/8 inch cable (7x9) if the temperature is 80 degree F.
70lbs
Solve the equation (32 X 3/8) / 1/6 =
72
an engine of 98 horse power maximum is running at 75 percent power. What is the horsepower being developed?
73.50
How many gallons of fuel will be contained in a rectangular shaped tank which measures 2 feet in width, 3 feet in length and 1 foot 8 inches in depth? (7.5 gal = 1 cu ft)
75
Maximum life for a certain part is 1100 hours. Recently, 15 of these parts were removed from different aircraft with an average life of 835.3 hours. What percent of the maximum engine life has been achieved?
75.9 percent
(refer to fig. 39) Determine the maximum length of No.16 cable to be installed from a bus to the equipment in a 28 volt system with a 25 ampere intermittent load and a 1 volt drop.
8 feet
If the fluid pressure is 800 PSI in a 1/2 inch line supplying an actuating cylinder with a piston area of 10 square inches, the force exerted on the piston will be...
8,000 pounds
Select the container size that will be equal in volume to 60 gallons of fuel. (7.5 gal = 1 cu ft)
8.0 cubic feet
An aircraft mechanic is privileged to perform major alterations on U.S. certificated aircraft: However, the work must be done in accordance with FAA approved technical data before the aircraft can be returned to service. Which is not approved data?
AC 43, 13-2A
When the specific torque value for nuts is not given, where can the recommended torque value be found?
AC 43.13-1B
Which of these publication contains standards for protrusion of bolts, studs and screws through self locking nuts?
AC 43.13-1B
A bolt with a single raised dash on the head is classified as an...
AN corrosion resistant steel bolt
Which coupling nut should be selected for use with 1/2 inch aluminum oil lines which are are to be assembled using flared tube ends and standard AN nuts, sleevesand fittings?
AN-818-8
Which condition is the actual amount of water vapor in a mixture of air and water?
Absolute humidity
For aircraft operated under part, when is aircraft total time required to be recorded in aircraft maintenance records?
After satisfactorily completing maintenance inspections
Placards required on an aircraft are specified in:
Aircraft Specifications or Type Certificate Data Sheets
Specifications pertaining to an aircraft, of which a limited number were manufactured under a type certificate and for which there is no current Aircraft Specification, can be found in the:
Aircraft listing
Technical information about older aircraft models, of which no more than 50 remain in service can be found in the...
Aircraft listing
Where is the record of compliance with Airworthiness Directives or manufacturers' service bulletins normally indicated?
Aircraft maintenance records
Suitability for use of a specific propeller with a particular engine airplane combination can be determined by reference to what informational source?
Aircraft specifications or Aircraft Type Certificate data sheet
For aircraft operated under part 91, what difference is there, if any, between the record entry requirements for maintenance (e.g. repair or alteration) and the record entry requirements for inspections (beyond the description of the work performed and the type and extent of inspection)?
Aircraft total time is required to be included only in the inspection entry
Type Certificate Data Sheets are used for which of the following products?
Aircraft, engines, propellers
Select the solvent recommended for wipe down of a cleaned surface...
Aliphatic naptha
Select the solvent used to clean acrylics and rubber.
Aliphatic natha
A non electrolytic chemical treatment for aluminum alloys to increase corrosion resistance and paint bonding qualities is called?
Alodizing
Nickel cadmium battery causes and drain surfaces which have been affected by electrolyte should be neutralized with a solution of...
Boric acid
The Air Transport Association of America (ATA) Specification no. 100: 1. establishes a standard for the presentation of technical data in maintenance manuals. 2. divides the aircraft to numbered systems and subsystems in order to simplify locating maintenance instructions. Regarding the above statements,
Both NO. 1 and 2 are true
1. A measurement should not be able scaled from an aircraft print because the paper shrinks or stretches when the print is made. 2. When a detail drawing is made, it is carefully and accurately drawn to scale and is dimensioned. Regarding the above statements,
Both No. 1 and No. 2 is true
Bonded clamps are used for support when installing metal tubing. 2. Unbonded clamps are used for support when install wiring. regarding the above statements,
Both No.1 and No. 2 are true
Which statement regarding aircraft bolts is correct?
In general, bolt grip lengths should equal the material thickness
What method of magnetic particle inspection is used most often to inspect aircraft parts for invisible cracks and other defects?
C - continous
A certified mechanic without an inspection authorization who signs the appropriate block on FAA form 337 is doing what?
Certifying that the work was done in accordance with the requirement of 14 CFR part 43
Which material cannot be heat treated repeatedly without harmful effects?
Clad aluminum alloy
What information is generally contained in aircraft Specifications or Type Certificate Data Sheets?
Control surface movements
Airworthiness Directives are issued primarily to...
Correct an unsafe condition
How is a flooded engine, equipped with a float type carburetor, cleared of excessive fuel?
Crank the engine with the starter or by hand, with the mixture control in cutoff, ignition switch off, and the throttle fully open, until the fuel charge has been cleared.
What is the status of data used as a basis for approving major repairs or alterations for return to service?
Data must be FAA approved prior to its use for that purpose
Which of these will cause the resistance of a conductor to decrease?
Decrease the length or increase the cross sectional area
Circular magnetization of a part can be used to detect which defects?
Defects parallel to the long axis of the part
What defects will be detected by magnetizing a part using continuous longitudinal magnetization with a cable?
Defects perpendicular to the long axis of the part
Which maintenance record entry best describes the action taken for a .125 inch deep dent in a straight section of 1/2 inch aluminum alloy tubing?
Dented section removed and replaced with identical new tubing flared to 37 degrees
A simple way to find the center of a circle on a sketch or drawing, or a circular piece of material is to...
Draw two non-parallel chord lines across the circle and then the corresponding perpendicular bisector line across each chord line
The most important condition to be monitored during engine start after fuel flow begins in a turbine is the...
EGT, TIT, ITT
What nondestructive testing method requires little or no part preparation, is used to detect surface or near surface defects in most metals, and may also be used to separate metals or alloys and their heat treat conditions...
Eddy current inspection
Which aircraft record entry is the best description of the replacement of several damaged helicoils in a casting?
Eight 1/4 - 20 inch standard helicoils were replaced. The damaged inserts were extracted, the tapped holes gauged, then new inserts installed, and tangs removed
Which of the following is Newton's First Law of Motion, generally termed the Law of Inertia?
Every body persists in its state of rest, or of motion in a straight line, unless acted upon by some outside force
What may result if water is added to a nickel cadmium battery when it is not fully charged?
Excessive spewing is likely to occur during the charging cycle
Where should you find this entry? "Removed right wing from aircraft and removed skin from outer 6 feet. Repaired buckled spar 49 inches from tip in accordance with figure 8 in the manufacturers structural manual No. 28-1."
FAA Form 337
Which statement is true regarding the use of FAA form 337?
FAA form 337 is not authorized for use with other than U.S. registered aircraft
which statement is true regarding flattening of tubing in bends?
Flattening by not more than 25 percent of the original diameter is permissible
Which of the following is an acceptable first step procedure to help prevent scratching when cleaning a transparent plastic surface?
Flush the surface with clean water
Which of the following statements is true for a certificated and appropriately rated mechanic regarding repairs and alterations?
He or she may perform an airframe major repair or major alteration, but can not approve the work for return to service
Which condition is an indication of improperly torqued cell link connections of a nickel cadmium battery?
Heat or burn marks on the hardware
Which atmospheric conditions will cause the true landing speed of an aircraft to be the greatest?
High temperature and high humidity
A primary reason why ordinary or otherwise non-approved cleaning compounds should not be used when washing aircraft is because their use can result in...
Hydrogen embrittlement in metal structures
Which is correct in reference to electrical resistance?
If one of three bulbs in a parallel lighting circuit is removed, the total resistance of the circuit will become greater.
The term that describes the combined resistive forces in an AC circuit is....
Impedance
What is the maximum penalty for cheating or other unauthorized conduct when taking an FAA mechanic test?
Ineligibility to receive any certificate or rating for one year, and a suspension or revocation of any certificate held
Which of the following may not be detectable even by careful visual inspection of the surface of aluminum alloy parts or structures?
Intergranular corrosion
Through which material will magnetic lines of force pass the most readily?
Iron
Normalizing is a process of heat treating...
Iron base metals only
Both gasoline and kerosene have certain advantages for us as turbine fuel. Which statement is true in reference to the advantages of each?
Kerosene has a higher heat energy per unit volume than gasoline
The main differences between grades 100 and 100LL...
Lead content and color
Which would have an effect on aircraft CG results when conducting a weight and balance check:
Leaving the down locks installed
(refer to fig. 19) Under which condition will a ground be provided for the warning horn through both gears switches when the throttles are closed?
Left gear up and right gear down
Which of the following best describes the contributing factors to thermal runaway in a nickel cadmium battery installed in an aircraft?
Low resistance intensified by high cell temperatures and a high current discharge / charge rate in a constant potential charging system
What is the maintenance recording responsibility of the person who complies with an Airworthiness Directive?
Make an entry in the maintenance record of that equipment
After a mechanic holding an airframe and powerplant rating completes a 100 hour inspection, What action is required before the aircraft is returned to service?
Make the proper entries in the aircraft's maintenance record
What type of line is normally used in a mechanical drawing or blueprint to represent an edge or object not visible to the viewer?
Medium - weight dashed line
A bolt with an X inside a triangle on the head is classified as an...
NAS close tolerance bolt
(refer to fig. 39) Determine the minimum wire size of a single cable in a bundle carrying a continuous current of 20 amperes 10 feet from the bus to the equipment in a 28 volt system with an allowable 1 volt drop.
No. 12
(refer to fig. 15) When the landing gear is down, the green light will not come if an open occurs in wire..
No. 6
(refer to fig. 19) When the landing gears are up and the throttles are retarded, the warning horn will not sound if an open occurs in wire...
No. 6
(refer to fig. 39) Determine the cable size of a 40 foot length of single cable in free air, with a continuous rating, running from a bus to the equipment in a 28 volt system with a 15 ampere load and a 1 volt drop.
No.10
(refer to fig. 19) When the throttles are retarded, the warning horn will not sound if an open occurs in wire..
No.5
For aircraft operating under part 91, which of the following records must be retained and transferred with the aircraft when sold?
Records of the current status of applicable AD's, and date and time when recurring AD's are next due
Which is the ratio of the water vapor actually present in the atmosphere to the amount that would be present if the air were saturated at the prevailing temperature and pressure?
Relative humidity
Which statement concerning heat and / or temperature is true?
Temperature is a measure of the kinetic energy of the molecules of any substance
What is absolute humidity?
The actual amount of the water vapor in a mixture of air and water
The voltage drop in a conductor of known resistance is dependent on...
The amperage of the circuit
Which statement is correct when made in reference to a parallel circuit?
The current is equal to the sum of the currents through the individual branches of the circuit
What happens to the current in a voltage step up transformer with a ratio of 1 to 4?
The current is stepped down by a 1 to 4 ratio
Under magnetic particle inspection, a part will be identified as having a fatigue crack under which condition?
The discontinuity is found in a highly stressed area of the part
Which statement regarding the hydrometer reading of a lead acid storage battery electrolyte is true?
The hydrometer reading does not require a temperature correction if the electrolyte temperature is above 80 degrees F
Who is responsible for determining that materials used in aircraft maintenance and repair are of the proper type and conform to the appropriate standards?
The installing person or agency
An aircraft was not approved for return to service after an annual inspection and the owner wanted to fly the aircraft to another maintenance base. Which statement is correct?
The owner must obtain a special flight permit
Who is responsible for making the entry in the maintenance records after an annual,100 hour, or progressive inspection?
The person approving or disapproving for return to service
When work is performed on an aircraft that necessitates the use of FAA from 337, who should prepare the form?
The person who performs or supervises the work
Which of the listed conditions is NOT one of the requirements for corrosion to occur?
The presence of a passive oxide film
Which maintenance action is an airframe major repair?
The repair of portions of skin sheets by making additional seams
Why is it important not to rotate the crankshaft after the corrosion preventive mixture has been put into the cylinders on engines prepared for storage?
The seal of corrosion preventive mixture will be broken
Which statement is applicable when using a sketch for making a part?
The sketch must show all information to manufacture the part
Under which conditions will the rate of flow of a liquid through a metering orifice (or jet) be the greatest (all other factors being equal)?
Unmetered pressure, 17 PSI: metered pressure, 5 PSI: atmospheric pressure, 14.7 PSI
Which aircraft record entry best describes a repair of a dent in a tubular steel structure dented at a cluster?
Welded a reinforcing plate over the dented area
What type of diagram shows the wire size required for a particular installation?
a wiring diagram
When may an otherwise qualified mechanic who does not read, write, speak and understand the English language be eligible to apply for a mechanics certificate?
When employed outside the United States by a U.S. carrier
When is a mechanic responsible for checking AD compliance?
When performing an inspection required under part 91, 125, or 135
A person working under the supervision of a certified mechanic with an airframe and powerplant rating is not authorized to perform...
a 100 hour inspection
The interior surface of sealed structural steel tubing is best protected against corrosion by which of the following?
a coating of linseed oil
When approving for return to service after maintenance or alteration, the approving person must enter in the maintenance record of the aircraft.
a description (or reference to acceptable data) of work performed, date of completion, the name of the person performing the work (if someone else), signature, certificate number and kind of certificate held.
In magnetic particle inspection, a flaw that is perpendicular to the magnetic field flux lines generally causes...
a large disruption in the magnetic field
To detect a minute crack using dye penetrant inspection usually requires...
a longer than normal penetrating time
A wing with a very high aspect ratio (in comparison with a low aspect ratio wing) will have...
a low stall speed
When determining the empty weight of an aircraft, certificated undercurrent airworthiness standards ( 14 CFR Part 23), the oil contained in the supply tank is considered...
a part of the empty weight
In what type of electrical diagrams are images of components used instead of conventional electrical symbols?
a pictorial drawing
During towing operations,
a qualified person should be in the cockpit to operate brakes
Flexible lines must be installed with a slack of...
a slack of 5 to 8 percent of the length
Weathervaning tendency is greatest when taxiing....
a tail wheel type
The rust or corrosion that occurs with most metals is the result of...
a tendency for them to return to their natural state
A part which is being prepared for dye penetrant inspection should be cleaned with...
a volatile petroleum based solvent
According to Dr. James Reason, there are two Types of human failure which can occur. They are:
active and latent
In performing a dye penetrant inspection, the developer...
acts as a blotter to produce a visible indication
If more space is needed for a work description entered on FAA form 337, what information should be included on the attached sheet(s), in addition to the rest of the work description?
aircraft nationality and registration mark and the date the work was accomplished
Primary responsibility for compliance with Airworthiness Directives lies with the...
aircraft owner or operator
What is the means by which the FAA notifies aircraft owners and other interested persons of unsafe conditions and prescribes the condition under which the product may continue to be operated?
airworthiness directives
If the reference datum line is placed at the nose of an airplane rather than at the firewall or some other location off of the nose,
all measurement arms will be in positive numbers
What must accompany fuel vaporization?
an absorption of heat
A drawing in which the subassemblies or parts are shown as brought together on the aircraft is called...
an illustration drawing
Which statement is true regarding the requirements for maintenance record format?
any format which provides record continuity and includes the required information may be used
(refer to fig. 24) Which statement concerning the depicted logic gate is true?
any input being 1 will produce a 1 output
When or under what condition(s) are adverse loading checks conducted?
anytime a repair or alteration causes EWCG to fall within the EWCG range
A scratch or nick in aluminum tubing can be repaired provided it does not...
appear in the heel of a bend
If electrolyte from a lead acid battery is spilled in the battery compartment, which procedure should be followed?
apply sodium bicarbonate solution to the affected area followed by a water rinse
The 100 hour inspection required by Federal Aviation Regulations for certain aircraft being operated for hire may be performed by...
appropriately rated mechanics and approved by them for return to service
If work is performed on an aircraft has been done satisfactorily, the signature of an authorized person on the maintenance records for maintenance or alterations performed constitutes...
approval for return to service only for the work performed
FAA certificated mechanics may...
approve for return to service a minor alteration they have performed appropriate to the rating(s) they hold
It all, or significant part of a stall strip is missing on an airplane wing, a likely result will be...
asymmetrical lateral control at or near stall angles of attack
A 14 Ohm resistor is to be installed in a series circuit carrying .05 ampere, How much power will the resistor be required to dissipate?
at least 35 milliwatts
The working voltage of a capacitor in an AC circuit should be........
at least 50% greater than the highest applied voltage
Of the following, when and/or where is galvanic corrosion is most likely to occur?
at the interface of a steel fastener and aluminum alloy inspection plate in the presence of an electrolyte
If a flared tube coupling nut is over tightened, where is the tune most likely be weakened / damaged?
at the sleeve and flare junction
When dealing with weight and balance of an aircraft, the term "maximum weight" is interpreted to mean the maximum...
authorized weight of the aircraft and its contents
In a P-N-P transistor application, the solid state device is turned on when the...
base is negative with respect to the emitter
In an N-P-N transistor application, the solid state device is turned when the...
base is positive with respect to the emitter
The Society of Automotive Engineers (SAE) and the American Iron and Steel Institute use a numerical index system to identify the composition of various steels. In number "4130" designating chromium molybdenum steel, the first digit indicate the...
basic alloying element
(refer to fig. 23) If R2 sticks in the up position, the light will...
be on full bright
If the volume of a confined gas is doubled ( with out the addition of more gas), the pressure will (assume the temperature remains constant)...
be reduced to one half its original value
What is the color of an AN steel flared tube fitting?
black
What should be the first step of the procedure in sketching an aircraft wing skin repair?
block in the views
The color of 100LL fuel is...
blue
1. In nondestructive testing. a discontinuity may be defined as an interruption in the normal physical structure or configuration of a part. 2. A discontinuity may or may not affect the usefulness of a part. Regarding the above statements,
both No. 1 and No. 2 are true
1. An aircraft part may be demagnetized by subjecting it to a magnetizing force from alternating current that is gradually reduced in strength. 2. An aircraft part may be demagnetized by subjecting it to a magnetized force from direct current that is alternately reversed in direction and gradually reduced in strength. Regarding the above statements,
both No. 1 and No.2 are true
1. A detail drawing is a description of a single part. 2. An assembly drawing is a description of an object made up of 2 or more parts. Regarding the above statements,
both, 1 and 2 are true
(refer to fig. 45) What type weld is shown at A?
butt
How can the state of charge of a nickel cadmium battery be determined?
by a measured discharge
Instrument repairs may be performed...
by an FAA approved instrument repair station
How is a quality system assured?
by an internal reporting and auditing system
Hydraulic tubing, which is damaged in a localized area to such an extent that repair is necessary, may be repaired...
by cutting out the damaged area and utilizing a swaged tube fitting to join the tube ends
How are aviation fuels, which possess greater anti knock qualities than 100 octane classified?
by performance numbers
How is the locking feature of the fiber type locknut obtained?
by the use of an unthreaded fiber locking insert
Intergranular corrosion in aluminum alloy parts...
can not always be detected by surface indications
The reheating of a heat treated metal, such as a welding torch...
can significantly alter a metal's properties in the reheated area
(refer to fig. 23) If an open occurs at R1 the light...
cannot be turned off
(refer to fig. 17) The electrical symbol represented at number 5 is a variable...
capacitor
Which of the following is the most satisfactory extinguishing agent for use on a carburetor or intake fire?
carbon dioxide
Which heat treating operation would be performed when the surface of the metal is changed chemically by introducing a high carbide or nitride content?
case hardening
Which heat treating process of metal produces a hard, wear resistant surface over a strong, tough core?
case hardening
What material symbol is frequently used in drawings to represent all metals?
cast iron
In nickel cadmium batteries, a rise in cell temperature...
causes a decrease in internal resistance
Spilled mercury on aluminum:
causes rapid and severe corrosion that is very difficult to control
A particular component is attached to the aircraft structure by the use of an aircraft bolt and a castellated tension nut combination. If the cotter pin hole does not align within the recommended torque range, the acceptable practice is to...
change washer and try again
The speed of sound in the atmosphere...
changes with a change in temperature
If a radial engine has been shutdown for more than 30 minutes, the propeller should be rotated through at least 2 revolutions to check to...
check for hydraulic lock
When an anodized surface coating is damaged in chemical surface treat service, it can be partially restored by...
chemical surface treatment
Aircraft bolts are usually manufactured with a...
class 3 fit for all threads
Unless otherwise specified, torque values for tightening aircraft nuts and bolts relate to...
clean, dry threads
Which tool is used to find the center of a shaft or other cylinder work?
combination set
(refer to fig. 15) The no. 7 wire is used to...
complete the PUSH TO TEST circuit
The following words are an example of what kind of statement in an AD? "Required within the next 25 hours time in service after the effective date of this AD, unless already accomplished".
compliance
Forward biasing of a solid state device will cause the device to...
conduct
A cabin entry light of 10 watts and a dome light of 20 watts are connected in parallel to a 30 volt source. If the voltage across the 10 watt light is measured, it will be....
equal to the voltage across the 20 watt light
When a discrepancy list is provided to an aircraft owner or operator after an inspection, it says in effect that...
except for these discrepancies, the item is airworthy
If it is necessary to weigh an aircraft with full tanks, all fuel weight must be subtracted from the scale readings...
except unusable fuel
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...
exfoliation
The drawings often used in illustrated parts manuals are...
exploded view drawings
What may be used to remove corrosion from highly stressed steel surfaces?
fine grit aluminum oxide
Magnetic particle inspection is used to primarily to detect...
flaws on or near the surface
When starting and ground operating an aircrafts engine, the aircraft should be positioned to head into the wind primarily...
for engine cooling purposes
When computing the maximum forwarded loaded CG of an aircraft, minimum weights, arms and moments should be used for items of useful load that are located aft of the...
forward CG limit
All other things being equal, if an item of useful load located aft of an aircrafts CG is removed, the aircrafts CG change will be...
forward in proportionate to the weight of the item and its location in the aircraft
An aircrafts LEMEC and TEMAC are identified in terms of distance...
from the datum
The priming of a fuel injected horizontally opposed engine is accomplished by placing the fuel control lever in the...
full rich position
One purpose for schematic diagrams is to show the...
functional location of components within a system
What tool is generally used to calibrate a micrometer or check its accuracy?
gauge block
Sketches are usually made easier by the use of...
graph paper
The best tool to use when cutting aluminum tubing, or any tubing of moderately soft metal is...
hand operated wheel type tubing cutter
A fuel that does not vaporize readily enough can cause...
hard starting
A 3/8 inch aircraft high pressure flexible hose as compared to 3/8 inch metal tubing used in the same system will...
have equivalent flow characteristics
The core material of Alclad 2024-T4 is...
heat treated aluminum alloy, and the surface material is commercially pure aluminum
A line used to show an edge which is not visible is a...
hidden line
Characteristics of aviation gasoline are...
high heat value, high volatility
The testing medium that is generally used in magnetic particle inspection utilizes a ferromagnetic material that has...
high permeability and low retentivity
Which of the following conditions has the most potential for causing engine damage when starting or attempting to start a turbine engine?
hot start
Which statement below reflects a typical requirement when towing some aircraft?
if the aircraft has a steerable nose wheel, the torque link lock should be set to full swivel
The term "cold flow" is generally associated with...
impressions left in natural or synthetic rubber hose material
A primary cause of Intergranular corrosion is...
improper heat treatment
Tetra lead is added to aviation gasoline to...
improve the gasoline's performance in the engine
The electrolyte of a nickel cadmium battery is the lowest when the battery is...
in a discharge condition
The electrolyte of a nickel cadmium battery is the highest when the battery is...
in a fully charged condition
To obtain useful weight data for purposes of determining the CG, it is necessary that an aircraft be weighed...
in a level flight attitude
The correct way to connect a test voltmeter in a circuit is....
in a parallel with a unit
When a 100 hour inspection completed, if separate maintenance records for the airframe, powerplant (s), and propeller(s) are maintained, where is the for the inspection recorded?
in each record
Why should an aircraft maintenance technician be familiar with weld nomenclature?
in order to gain familiarity with the welding technique, filler material and temperature range used
A mechanic has completed a bonded honeycomb repair using the potted compound repair technique. What nondestructive testing method is used to determine the soundness of the repair after the repair has cured?
metallic ring test
What maybe used to check the stem on a poppet type valve for stretch?
micrometer
What precision measuring tool is used for measuring crankpin and main bearing journals for out of round wear?
micrometer caliper
Which tool can be used to determine piston out of round wear?
micrometer caliper
Which term means .001 ampere?
milliampere
The replacement of a damaged engine mount with a new identical engine mount purchased from the aircraft manufacturer is considered a...
minor repair
The replacement of a damaged vertical stabilizer with a new identical stabilizer purchased from the aircraft manufacturer is considered a...
minor repair
What is an advantage of a double flare on aluminum tubing?
more resistance to damage when the joint is tightened
The CG range in single rotor helicopter is...
more restricted than for airplanes
A fully charged lead acid battery will not freeze until extremely low temperatures are reached because...
most of the acid is in the solution
When taxiing 9 towing) an aircraft, a flashing red light from the control tower means...
move clear of the runway/taxiway
1. Certificated mechanics with an airframe rating may perform a minor repair to a propeller providing they have the necessary equipment available. 2. Certificated mechanics with a powerplant rating may perform a major repair to a propeller providing they have the necessary equipment available. Regarding the above statements,
neither No. 1 nor No. 2 is true
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
(refer to fig. 15) With the landing gear retracted, the red indicator light will not come on if an open occurs in wire...
no. 19
(refer to fig. 18) When the landing gears are up and throttles are retarded, the warning horn will not sound if an open wire occurs in wire...
no. 4
The presence of small amounts of potassium carbonate deposits on the top of nickel cadmium battery cells that have been in service for a time is an indication of...
normal operation
If both the volume and the absolute temperature of a confined gas are doubled, the pressure will...
not change
The three types of human error are:
omission, commission, and extraneous
1. A Supplemental Type Certificate may be issued to more than one applicant for the same design change, providing each applicant shows compliance with the applicable airworthiness requirement. 2. An installation of an item manufactured in accordance with the Technical Standard Order system requires no further approval for installation in a particular aircraft. Regarding the above statements,
only No. 1 is true
1. The Federal Aviation Regulations require approval after compliance with the data of a Supplemental Type Certificate. 2. An installation of an item manufactured in accordance with the Technical Standard Order System requires no further approval for installation in a particular aircraft. Regarding the above statements,
only No. 1 is true
1. According to 14 CFR Part 91, repairs to an aircraft skin should have a detailed dimensional sketch included in the permanent records. 2. On occasion, a mechanic may need to make a simple sketch of a proposed repair to an aircraft, a new design or modification. Regarding the above statements,
only No. 2 is true
1. Manufacturer's data and FAA publications such as Airworthiness Directives, Type Certificate Data Sheets, and advisory circulars are all approved data. 2. FAA publications such as Technical Standard Orders, Airworthiness Directives, Type Certificate Data Sheets, and Aircraft Specifications and Supplemental Type Certificates are all approved data. Regarding the above statements,
only No. 2 is true
1. propellers are not included in the Airworthiness Directive system. 2. A certificated powerplant mechanic may make a minor repair on an aluminum propeller and approve for return to service. Regarding the above statements,
only No. 2 is true
1. Jet fuel is of higher viscosity than aviation gasoline and therefore holds contaminants better. 2. Viscosity has no relation to contamination of fuel. Regarding the above statements,
only No.1 is true
Where is an AN clevis bolt used in an airplane?
only for shear load applications
1. In the corrosion process, it is the cathodic area or dissimilar cathodic material that corrodes. 2. In the galvanic or electro-chemical series for metals, the most anodic metals are those that will give up electrons most easily. Regarding the above statements,
only no. 2 is true
1. Schematic diagrams indicate the location of individual components in the aircraft. 2. Schematic diagrams indicate the location of components with respect to each other within the system.
only no. 2 is true
A thermal switch, as used in an electric motor, is designed to...
open the circuit in order to allow cooling of the motor
Metal tubing fluid are sized by wall thickness and...
outside diameter in 1/16 inch increments
When making a rearward weight and balance check to determine that the CG will not exceed the rearward limit during extreme conditions, the items of useful load should be computed at their minimum weights are those located forward of the...
rearward CG limit
For aircraft operated under part 91, which of the following records must be retained for at least one year, or until the work is repeated or superseded?
records of maintenance, alterations, preventive maintenance, 100 hour, annual and progressive inspections
Diodes are used in electrical power supply circuits primarily as....
rectifiers
Improper loading of a helicopter which results in exceeding either the fore or aft CG limits is hazardous due to the...
reduction or loss of effective cyclic pitch control
If the temperature of a confined liquid is held constant and its pressure is tripled, the volume will...
remain the same
What task 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 fill hydraulic reservoir
Holes and a few projecting globules are found in a weld. What actions should be taken?
remove all the old weld, and reweld the joint
When installing bonded clamps to support metal tubing,
remove paint or anodizing from tube at clamp location
What type of sections illustrate particular parts of an object?
removed
The major source of weight change for most aircraft as they age is caused by...
repairs and alterations
When taxiing (or towing) an aircraft, a flashing white light from the control tower means...
return starting point
When checking an item with the magnetic particle inspection method, circular and longitudinal magnetization should be used to...
reveal all possible defects
A certificated mechanic shall not exercise the privileges of the certificate and rating unless, within the preceding 24 months, the Administrator has found that the certificate holder is able to do the work or the certificate holder has...
served as a mechanic under the certificate and rating for at least 6 months
During starting of a turbine power plant using a compressed air starter, a hung start occurred. Select the the proper procedure.
shut the engine down
(refer to fig. 32) What is the next step required for a working sketch of the illustration?
sketch extension and dimension lines
What is descriptive of the annealing process of steel during and after it has been annealed?
slow cooling: low strength
One way a part may be demagnetized after magnetic particle inspection is by...
slowly moving the part of an AC magnetic field of sufficient strength
If it is necessary to accurately measure the diameter of a hole approximately 1/4 inch in diameter, the mechanic should use a...
small hole gauge and determine the size of the hole by taking a micrometer reading of the ball end of the gauge
Capacitors are sometimes used in DC circuits to.....
smooth out slight pulsations in current / voltage
Use of which of the following generally yields the highest degree of aircraft leveling accuracy?
spirit levels
What is generally used in the construction of aircraft engine firewalls?
stainless steel
Which of these materials is the most cathodic?
stainless steel
Aircraft bolts with a cross or asterisk marked on the bolt head are
standard steel bolts
A specific measured distance from the datum or some other point identified by the manufacturer, to a point in or on the aircraft is called a...
station number
Corrosion should be removed from magnesium part with a...
stiff, non metallic brush
A fiber type, self locking nut must never be used on an aircraft if the bolt is...
subject to rotation
The empty weight of an airplane is determined by...
subtracting the tare weight from the scale reading and adding the weight of each weighing point
Under Title 14 of the Code of Federal Regulations, What is the maximum penalty for falsification, alteration, or fraudulent reproduction of certificates, logbooks, reports and records?
suspension or revocation of any certificate held
Which statement is true regarding the geometric symbols on identifying color code bands that are currently used on aircraft plumbing lines?
symbols are always black against a white background regardless of line content
How can the dimensional inspection of a bearing rocker arm be accomplished?
telescopic gauge and micrometer
In a metal tubing installation,
tension is undesirable because pressurization will cause it to expand and shift
When first starting to move an aircraft while taxiing, it is important to...
test the brakes
Who is responsible for upkeep of the required maintenance records for an aircraft?
the aircraft owner
After making a certain repair to an aircraft engine that is to be returned to service, an FAA form 337 is prepared. How many copies are required and what is the disposition of the completed forms?
two ; one copy for the aircraft owner and one copy for the FAA
What does the Type Certificate Data Sheet designation code "2PCSM" mean?
two place (number of seats) closed, sea, monoplane
What FAA - approved document gives the leveling means to be used when weighing an aircraft?
type Certificate data sheet
Jet fuel identifiers are...
type numbers and have no relation to the fuels performance in the aircraft engine
Which of these nondestructive testing methods is suitable for the inspection of most metals, plastics and ceramics for surface and subsurface defects?
ultrasonic inspection
What is the normal duration of a mechanic certificate with airframe and/or powerplant ratings?
until surrendered, suspended, or revoked
The amount of fuel used for computing empty weight and corresponding CG is...
unusable fuel
Unless otherwise specified or required, aircraft bolts should be installed so that the bolt head is...
upward, or in a forward direction
When taxiing an airplane with a quartering tail wind, the elevators and...
upwind aileron should be held in the down position
A fuel that vaporizes too readily may cause...
vapor lock
The potential difference between 2 conductors which are insulated from each other is measured in....
volts
If dye penetrant inspection indications are not sharp and clear, the most probable cause is that the part...
was not thoroughly washed before developer was applied
How many magnesium engine parts be cleaned?
wash with a commercial solvent decarbonize, and scrape or grit blast
What unit is used to express electrical power?
watt
Which maintenance record entry best describes the action taken for a control cable showing approximately 20 percent wear on several of the individual outer wires at a fairlead?
wear within acceptable limits, repair not necessary
What should be clearly indicated on the aircraft weighing form?
weighing points
Which statement is true regarding helicopter weight and balance?
weight and balance procedures for airplanes generally also apply to helicopters
What two types of indicating mediums are available for magnetic particle inspection?
wet and dry process materials
(refer to fig. 25) In a functional and operating circuit, the depicted logic gate's output will be 0...
when one or more inputs are 0
Fretting corrosion is most likely to occur...
when two surfaces fit tightly together but can move relative to one another
The "SHEL" model is another human factors tool. The goal is to determine not only what the problem is, but also:
where and why exists
Aspect ratio of a wing is defined as the ratio of the...
wingspan to the mean chord
What should be done to prevent rapid deterioration when oil or grease come in contact with a tire?
wipe the tire with a dry cloth followed by a wash down and rinse with soap and water
How is a clevis bolt used with a fork end cable terminal secured?
with a shear nut tightened to a snug fit but with no strain imposed on the fork and safetied with a cotter pin
What will a voltmeter read if properly connected across a closed switch in a circuit with electrical power on?
zero voltage
