Aircraft maintenance General Study cards
Which requires the most electrical power during operation?
(2) Lights requiring (3) amp. each in 24v parallel system.
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.
1 and 4
A certified mechanic with a powerplant rating may perform the.....
100hr inspection required by the federal aviation regulations on a powerplant or any thereof and approve and return the same to service.
The maximum duration of a temporary airman certificate is....
120 Days
What is the maximum duration of a temporary airmen certificate?
120 Days
(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.
2
(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 standards orders, Airworthiness directives, type certificate data sheets, and supplemental type certificates are all approved data.
2
Which statement is/are true regarding tiedownof small aircraft? 1. Manila (hemp) rope has a tendency to stretch when it gets wet. 2. Nylon or darcon rope is prefferred to manila rope. 3. The aircraft should be headed downwind in order to eliminate or minimize wing lift. 4. Leave the nosewheel or tailwheel unlocked.
2
What is the operating resistance of a 30-watt light bulb designed for a 28-volt system?
26 ohms
Which of the following occurs when a mechanical force is repeatedly applied to most metals at room temperature, such as rolling, hammering, or bending 1. the metals become artificially aged. 2. the metals become stress corrosion cracked. 3. The metals become cold worked, strain or worked hardened.
3
If the volume of a cylinder with a piston at the bottom center is 84 cubic inches and the piston displacement is 70 cubic inches, then the compression ratio is
6:1
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
An engine that weighs 350 pounds is removed from an aircraft by means of a mobile hoist. The engine is raised 3ft above its attatchment mount, and the entire assembly is then moved forward 12ft. A constant force of 70lbs is required to move the loaded hoist. What is the total work input required to move the hoist.
840 ft-lbs
In performing a dye penetrant inspection, the developer acts as what?
A blotter to produce a visible indication.
when determining the empty weight of an aircraft certified under current airworthiness standards (14 CFR part 23), the oil contained in the supply tank is considered.
A part of the empty weight
What factors strengthen a coil inductor,
Adding coils close together.
if more space is needed for a work description entered on faa 337, what information should be included on the attached sheets, in addition to the rest of the work description?
Aircraft nationality and registration mark, and the date the work was accomplished.
Type certificate data sheets are issued for which of the following products?
Aircraft, engines, and propellers.
Which statement concerning the depicted logic gate is true?
Any input being 1 will produce 1 output.
FAA certified mechanics may....
Approve for return to service a minor alteration they have performed appropriate to the ratings they hold
What is the working volt of a capacitor in an (AC) circuit?
At least 50% greater than the highest applied voltage.
(1) Bonded clamps are used for support when installing metal tubing. (2) unbonded clamps are used for support when installing wiring.
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 magnetizing force from direct current that is alternately reversed in direction and gradually reduced in strength.
Both No.1 and No.2 are true.
How is the locking feature of the fiber-type locknut obtained?
By the use of an unthreaded fiber locking insert.
A certified mechanic without an inspection authorization who signs the appropriate block on FAA form 33 is doing what?
Certifying that the work was done in accordance with the requirements of 4 cfr part 43.
Which tool is used to find the center of a shaft or other cylindrical work?
Combination set
What information is generally contained in Aircraft specifications or type certificate data sheets?
Control Surface movements
Circular magnetization of a part can be used to detect which defects?
Defects parallel to the long axis of the part.
What is the class of working drawing that is the description/depiction of a single part?
Detail Drawing
the temperature to which humid air must be cooled @ constant pressure to become saturated is called....
Dewpoint
The useful load of an aircraft is the....
Difference between the max. takeoff weight and basic empty weight.
Which of the following are commonly used as rectifiers in electrical circuits?
Diodes.
Identify the correct statement.
Dividers do not provide a reading when used as a measuring device.
Fayed surfaces cause concern in chemical cleaning because of the danger of
Entrapping corrosive materials
Fayed surfaces cause concern in chemical cleaning because of the danger of.......
Entrapping corrosive materials.
Which of the following is Newton's first law of motion, generally termed the Law of Inertia?
Everybody persists in its state of rest, or of motion in a straight line, unless acted upon by some outside force.
The lifting or flaking of the metal at the surface due to delamination of grain boundaries caused by the press. of corrosion residual product buildup is.....
Exfoliation
What may be used to remove corrosion from highly stressed steel surfaces?
Fine - Grit aluminum oxide.
All other things being equal, if an item is useful load located aft of an aircarft's CG is removed, the aircraft's CG change will be......
Forward in proportion to the weight of the item and its location in the aircraft.
the priming of a fuel injected horizontally opposed engine is accomplished by placing the fuel control lever in,
Full-Rich position
Which of the following statements is true for a certificated and appropriately rated mechanic regarding repairs and alterations?
He/she may perform an air frame major repair or major alteration, but cannot approve the work for return to service.
The electrolyte of a nickel-cadmium battery is the lowest when the battery is...
In a discharged condition
What type of corrosion may attack the grain boundaries of aluminum alloys when the heat treatment process has been improperly accomplished?
Intergranular
If the empty weight CG of an airplane lies within the empty weight CG limits,
It is not necessary to calculate CG extremes.
What are station numbers used for?
Locate fuselage frames.
Which of these is the most anodic?
Magnesium
What are magnetic particle inspection used for?
Magnetic particle inspection is used primarily to detect flaws on or near the surface.
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.
A bolt with an X inside a triangle on the head is classified as an....
NAS close tolerence bolt.
The total piston displacement of a specific engine is the volume displaced by all the pistons during....
One revolution of the crankshaft.
Where is AN clevis bolt used in an airplane?
Only for shear load applications.
where is an AN clevis bolt used in an airplane?
Only for shear load applications.
in what type of electrical diagram are images of components used instead of conventional electrical symbols?
Pictorial Diagram
The amount of electricity a capacitor can store is directly proportional to the ....
Plate area and inversely proportional to the distance between the plates.
The amount of electricity a capacitor can store is directly proportional to the...
Plate area and inversely proportional to the distance between the plates.
In a sectional view drawings, what sections illustrate particular parts of an object?
Removed
What are flexible hoses classified in......?
Size according to inside diameter.
The 3 process of annealing steel are....
Slow cooling & low cooling
What is ATA ispec 2200?
Standardized electronic documentation for aircraft models.
Which effect does not apply to the movement of electrons flowing in a conductor?
Static energy
What dosen't apply to the movement of electrons?
Static energy does not apply to the movement of electrons flowing in a conductor.
Aircraft bolts with a cross or asterisk marked on the boltheads are....
Steel Bolts
How can the dimensional inspection of a bearing in a rocker arm be accomplished?
Telescopic gauge and micrometer.
what does an airworthiness directive requires?
That a propeller be altered to perform and approve the work for return to service if it is a minor alteration.
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.
What determines whether the value of a moment is precede by a plus or minus sign in aircraft weight and balance?
The result of a weight being added or removed and its location relative to the datum.
It's important not to rotate the crankshaft after corrosion preventive mixture because......
The seal of corrosion preventive mixture will be broken.
When calculating pwr. in a reactive or inductive AC circuit?
The true power is less than the apparent power.
The side clearances of piston rings are measured with a....
Thickness gauge
What metal has special short-time heat properties and is used in the construction of aircraft firewalls?
Titanium Alloy
What metal has special short-time heat properties and is used in the construction of aircraft firewalls?
Titanium alloy
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 documents.
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 supplenetary documents.
Why should an aircraft maintenance technician be familiar with nonmelecture?
To gain familiarity with the welding technique filler material, and the temp range used.
What is the desired effects of using winglets?
To increase the lift to the drag ratio.
For which of the following would a water break test be conducted?
To make certain that a bare metal surface is thoroughly clean.
In ordder to reconstruct lost or destroyed aircraft maintenance records, what is it necessary to establish?
Total time in service of the airframe.
Typical application for zener diodes is as
Voltage regulators
In a P-N-P transistor application, the solid state device is turned on.....
When the base is negative with respect to the emitter.
The "Shel'" Model is another human factors tool. The another human factors tool. The goal is to determine not only what the problem is, but also
Where and why its exists.
Weathervaning tendency is greatest when taxiing
a tail wheel-type airplane in a direct crosswind.
The rust or corrosion that occurs with most metals is the result of
a tendency for them to return to their natural state.
A scratch or nick in aluminum tubing can be required provided it does not
appear in the heel of a bend.
If the volume of a confined gas is doubled , the pressure will....
be reduced to one-half its original value.
Spilled mercury on aluminum
causes rapid and severe corrosion that is very difficult to control
When an anodized surface coating is damaged in service, it can be partially restored by
chemical surface treatment
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 lifting or flaking of the metal at ht e surface due to delamination of grain boundaries caused by the pressure of corrosion residual product buildup is called?
exfoliation
Which condition is an indication of improperly torqued cell link connections of a nickel-cadmium battery?
heat or burn marks on the hardware.
The desired effect of using winglets on an aircrafts wingtips is to..
increase the lift to drag ratio.
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.
Which statement relating to the residual magnetizing inspection method is true?
it may used with steels which been heat treated for stressed applications.
Which term means 001 Ampere?
milliampere
The three types of human error are
omission, commission, and extraneous
A thermal switch, or thermal protector, as used in an electric motor, is designed to...
open the circuit in order to allow cooling of the motor.
When installing bonded clamps to support metal tubing?
remove paint or anodizing from tube at clam location.
When installing bonded clamps to support metal tubing,
remove paint or anodizing from tube at clamp location.
Which effect does not apply to the movement of electrons flowing in a conductor?
static energy
jet fuel number identifiers are...
type numbers and have no relation to the fuel's performance in the aircraft engine.
What unit is used to express electrical power?
watt
