Term
| What TO covers aircraft hardware? |
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Definition
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Term
| What terms are used to describe the size of a bolt? |
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Definition
| Length, diameter, and threads per inch. |
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Term
| Describe the grip length of a bolt. |
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Definition
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Term
| What type of bolts is available with thin heads and is designed to be used in tight places? |
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Definition
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Term
| What kind of bolt is used where shearing or sideways stress occurs? |
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Definition
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Term
| What special-purpose bolt is used where external tension loads are applied? |
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Definition
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Term
| What feature distinguishes the internal wrenching bolt from other bolts? |
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Definition
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Term
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Definition
| When a standard-type bolt is impractical |
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Term
| List three kinds of nonself-locking nuts. |
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Definition
| Plain nuts, check nuts, castle nuts, and wingnuts |
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Term
| List two uses for plain washers |
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Definition
(1) To provide a smooth bearing surface.
(2) To act as shims in obtaining the correct relationship between threads of the bolt and the nut, to adjust
the portion of castellated nuts with respect to the drilled cotter pin holes, or under lockwashers to
prevent damage to surfaces of soft material. |
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Term
| How are screws usually described? |
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Definition
| According to the shape of the head. |
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Term
| What type of rivets is usually used for fastening aircraft structures? |
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Definition
| Common, solid shank rivets. |
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Term
| What type of aircraft fastener isn’t designed to carry a structural load? |
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Definition
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Term
| What safety-wire method is most commonly used? |
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Definition
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Term
| Using the double twist method, how many closely spaced bolts can be safetied in a series? |
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Definition
| No more in a series than you can secure with a 24-inch length of wire. |
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Term
| When will .032-inch safety cable be used to safety parts? |
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Definition
| When parts have a nominal hole diameter of .075 inch or smaller. |
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Term
| What do torque wrenches measure? |
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Definition
| The pull force in inch-pounds when hardware is being torqued (tightened). |
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Term
| How do indicating-type torque wrenches display the applied torque? |
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Definition
| By a pointer that moves over an indicating scale. |
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Term
What type of torque wrench automatically releases when you apply a predetermined amount of
torque? |
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Definition
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Term
How much free travel does the breakaway torque wrench allow when the preset torque level is
reached? |
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Definition
| Approximately 5 to 10 degrees |
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Term
What may happen if you overtighten a component to a value that’s greater than the value set on
the torque wrench? |
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Definition
| You may cause internal damage to the torque wrench. |
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Term
| How does the working range of a breakaway or indicating type torque wrench apply to its use? |
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Definition
Ensure that the working range isn’t lower than 20 percent, and not greater than the rated capacity of the
torque wrench |
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Term
| When torquing a bolt you should set the torque wrench to what value? |
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Definition
| Set the torque setting to the upper limit of the specific torque value allowed by the technical order. |
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Term
When you’re using a torque wrench to tighten a series of nuts, do you tighten each nut to the
specified torque before starting to torque the other nuts? Explain |
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Definition
No. Gradually tighten each until they all meet the specified torque. Tighten the nuts opposite of each other
in sequence. |
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Term
| Before storing a torque wrench, to what setting should you set the grip? Why? |
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Definition
To the lowest setting. This removes tension from the spring in the handle and preserves the accuracy of the
torque wrench. |
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Term
Torque wrenches should have some kind of label (paper, tape, or other) on the handle. What
information do you determine from this label before using the torque wrench? |
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Definition
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Term
| What do you do if you discover a torque wrench is overdue calibration? |
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Definition
| DON’T USE IT; turn it in for calibration |
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Term
| How is a cable size determined? |
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Definition
| Cable size is always determined by the diameter of the cable. |
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Term
| Why are some cables coated with a nylon jacket? |
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Definition
| To increase the service life of the cable. |
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Term
| What’s the purpose of a turnbuckle? |
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Definition
| To adjust tension on aircraft cables. |
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Term
| Pulleys and fairleads are made of what type material? |
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Definition
| Phenolic or other nonmagnetic material. |
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Term
| What keeps cables from coming in contact with structural parts of the aircraft? |
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Definition
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Term
| What’s the purpose of a pressure seal? |
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Definition
| To prevent the loss of pressure from pressurized areas through which cables pass. |
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Term
What units are used to transmit motion about an axis and to change the direction of force of a
cable or push-pull rod? |
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Definition
|
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Term
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Definition
| A rigid rod that transmits both a push and a pull motion. |
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Term
| What devices are used to limit the movement of a control surface? |
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Definition
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Term
| Where are torque tubes used in flight control systems? |
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Definition
| Where they’re needed to transmit a twisting force. |
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Term
| How can aluminum alloy and stainless steel tubing be easily distinguished? |
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Definition
By their different metallic luster or aluminum-alloy tubing may be stamped with the actual alloy
designation |
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Term
| What color is an aluminum alloy tube fitting? |
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Definition
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Term
| Where is aluminum-alloy tubing commonly used? |
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Definition
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Term
| Why is stainless steel tubing preferred on external brake lines and other exposed system lines? |
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Definition
| To prevent damage caused by flying gravel, stones, and ground-handling accidents. |
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Term
| Describe the color code tape used in identifying hydraulic lines. |
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Definition
| Blue band, a yellow band, and a white band overprinted with a row of black-bordered circles. |
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Term
A system line is 38-inches long and passes through a bulkhead. The bulkhead divides the line so
that 25 inches is on one side. How many bands of tape would you place on this line? |
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Definition
| Three. One on the 13-inch section and two on the 25-inch section. |
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Term
| Before you install a tubing assembly, you should inspect it for what conditions? |
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Definition
| Obstructions, dents, scratches, and damage to the flared end |
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Term
| What can result from over tightening a tubing nut? |
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Definition
| May severely damage the tubing flare or may result in damage to the sleeve or nut of the fitting |
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Term
| What information can be obtained from the markings on flexible hose? |
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Definition
| The manufacturer’s code number or symbol marking, date of manufacture, size, and specification |
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Term
| What prevents chafing of a hose passing through a bulkhead? |
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Definition
| Bulkhead-type grommets and cushion clips. |
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Term
| How should hose connections be made to an engine or to engine-mounted accessories? |
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Definition
Install the hose so 11/2 inches of slack or an adequate bend is provided between the last point of support and
the attachment to the engine or accessory. |
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Term
| What parts of a Cannon plug ensure the connector halves aren’t mismated? |
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Definition
| A key and keyway arrangement in the barrel of the plug and receptacle |
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Term
| AN-type Cannon plugs are being replaced with what type of plugs? |
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Definition
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Term
| What technical order provides information concerning the repair of connectors? |
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Definition
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Term
| Why is aluminum foil not used as a cover for Cannon plugs? |
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Definition
| May cause a short circuit. |
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Term
| Why should you not attempt to remove a Cannon plug’s insert from the shell? |
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Definition
| It’s permanently bonded and can’t be removed without destroying it. |
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Term
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Definition
| Chemical reaction with the surrounding environment. |
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Term
| What happens to iron when it’s exposed to moist air? |
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Definition
| Returns to its natural state, iron oxide or rust. |
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Term
____ (1) Produced by the effects of an alternating cyclic stress and
a corrosive environment.
____ (2) Numerous worm-like traces of corrosion beneath the
paint film.
____ (3) First seen as a general dulling of the surface.
____ (4) Indicated by a lifting up or swelling of the surface grains
of a metal.
____ (5) Resembles a white or gray powdery, dust-like deposit on
the surface of the metal.
____ (6) Type of corrosion that occurs when different metals are
in contact.
____ (7) Is a selective attack along a metal’s grain boundaries.
____ (8) Appears as corroded cracks in the metal.
____ (9) May occur when a surface is covered by a foreign
material.
Column B
a. Uniform surface.
b. Pitting.
c. Intergranular.
d. Exfoliation.
e. Crevice/concentration cell.
f. Stress.
g. Corrosion fatigue.
h. Galvanic.
i. Filiform. |
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Definition
(1) g.
(2) i.
(3) a.
(4) d.
(5) b.
(6) h.
(7) c.
(8) f.
(9) e |
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Term
| What are the three types of crevice/concentration cell corrosion? |
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Definition
(1) Metal ion.
(2) Oxygen.
(3) Active-passive. |
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Term
| Which TO contains detailed instructions for corrosion prevention and treatment? |
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Definition
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Term
| What TOs cover sealants, solvents, adhesives, coatings, and accelerators? |
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Definition
| TOs 42A3–1–2 and 1–1–691. |
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Term
| What must be considered to make sealant effective? |
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Definition
| Correct sealant be used and applied correctly |
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Term
| In what three units of issue are sealants generally packaged? |
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Definition
(1) Two-Part Can Kit (KT).
(2) Semkit cartridge (CA).
(3) Premixed and Frozen (OZ). |
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Term
| What are the two separate packaged components of polysulfide and polythioether sealants? |
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Definition
| A base compound (part B) and an accelerator (part A). |
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Term
| What does the application life of a sealant depend on? |
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Definition
| The length of time that a mixed sealing compound remains usable at 75º F and 50 percent relative humidity. |
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Term
| What protective equipment should you wear when working with solvents? |
|
Definition
| Skin and eye protection and good ventilation or respiratory protection |
|
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Term
| What should you do before using a sealant that has exceeded its shelf life? |
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Definition
|
|
Term
| What’s the purpose of adhesives? |
|
Definition
| To hold two like or unlike surfaces together through molecular attraction or mechanical anchorage |
|
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Term
| What does the frequency of aircraft cleaning depend on? |
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Definition
| The type of aircraft and the environmental conditions to which the aircraft is exposed. |
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Term
Under what conditions is daily cleaning required on exposed, unpainted surfaces, such as landing
gear struts and actuating rods of hydraulic cylinders? |
|
Definition
When the aircraft is deployed within three miles of salt water or when it’s flown below 3,000 feet over salt
water. |
|
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Term
| What three factors should be considered when selecting a cleaner? |
|
Definition
(1) Type and amount of soil to be removed.
(2) Material size and surface condition.
(3) Degree of cleanliness required. |
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Term
| What’s the most common type of cleaning solvent used on aircraft? |
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Definition
|
|
Term
What’s the maximum time a solvent (MIL-PRF–680, Type II) is allowed to remain on painted
surfaces? |
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Definition
|
|
Term
| What’s the preferred type of cleaner for cleaning the interior cockpit, floor and deck area? |
|
Definition
|
|
Term
| How do you clean optical glass? |
|
Definition
| Spray the cleaner onto a flannel cloth and carefully wipe the lens surface and wipe dry. |
|
|
Term
What solution should be used to treat areas affected with electrolyte from a nickel-cadmium
battery |
|
Definition
| Six ounces of monobasic sodium phosphate and one gallon of water. |
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Term
What cleaning agent would you use to clean the exterior of the aircraft (painted) for light and
moderate soils? |
|
Definition
| MIL-PRF–85570, Type I or MIL-PRF–85570, Type II cleaning solutions mixed to the proper ratio |
|
|
Term
| What procedure would you use to clean exposed pistons on a landing gear? |
|
Definition
| Clean with a clean cloth dampened with hydraulic fluid; wipe away from seal |
|
|
Term
| In what location should an aircraft be cleaned when outside temperatures are below 40º F? |
|
Definition
|
|
Term
| What should you do if cleaner is splashed in your eyes? |
|
Definition
| Rinse your eyes thoroughly with fresh water for 15 minutes and report to the nearest medical facility. |
|
|
Term
| Who publishes the Hazardous Waste Management System rules for the entire United States? |
|
Definition
|
|
Term
| Who is responsible for ensuring all hazardous material disposal containers are properly labeled? |
|
Definition
| The Accumulation Point Manager |
|
|
Term
| What’s the purpose of lubrication? |
|
Definition
To prevent wear between moving parts, fill air spaces, displace water, and provide a barrier against
corrosive media. |
|
|
Term
| What types of information are found on a lubrication chart? |
|
Definition
| Items to be lubricated, type of lubricant, and method of application. |
|
|
Term
| When should a lubricant be applied to a corroded surface? |
|
Definition
|
|
Term
| How long should grease be forced into fittings? |
|
Definition
| Until new grease is evident |
|
|
Term
| Where are lubrication safety precautions normally written? |
|
Definition
| Into the lubrication technical order. |
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