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2A7X3 Volume 2
Flash Cards for Structural Maintenance CDC's
| Question | Answer |
|---|---|
| What two categories are Air Force publications divided into? | Nondirective, directive |
| Compliance with these Air Force publications is mandatory. | Instructions, manuals |
| An auxiliary publication that extends or adds material to another publication issued by higher headquarters or agencies is called a | supplement. |
| Which is not one of the five major types of TOs authorized for use in the Air Force? | Operations and methods technical order. |
| In the basic TO numbering system, what is the minimum amount of number groups? | Three |
| The MIDAS is | a six-digit numbering system expressed as three elements of two digits each. |
| What TO series is the IPB that allows you to identify the most procurable parts for a specific aircraft? | –4 |
| What section of the IPB can you look up parts by item name? | III |
| A revision to a publication is normally issued when the changes exceed at least what percentage of the basic TO? | 80 percent |
| What AFTO form is used to correct errors in TOs? | 22 |
| What word is added for emphasis to essential material that follows? | Note |
| A substance that cannot be broken down by chemical means to form any other substance is called | an element. |
| The smallest unit of an element is called | an atom. |
| An atom that has gained or lost electrons and has acquired an electrical charge is called | an ion. |
| What is displaced from the electrolyte and gathers on the surface of the cathode to form a thin, invisible film? | Hydrogen |
| When the anode is smaller, in relation to the cathode in the electrochemical corrosion cell, the rate of corrosion is | rapid and severe. |
| The electrode potential is an indication of the metal’s | tendency to return to its natural state. |
| An electrolyte’s conductivity is determined by | ions. |
| Concerning the corrosion of mild steel, when the pH becomes less than 4, the alkaline film on the metal is | destroyed. |
| What do inert gases in a solution do to the rate of corrosion? | Decrease it |
| What salt yields a soluble anodic product and an insoluble cathodic product? | Zinc sulfate |
| On a polished surface, uniform surface corrosion is first seen as | a general dulling of the surface. |
| Pitting corrosion of aluminum or magnesium is first noticed as | white powdery deposits. |
| In an active-passive cell, the rate of corrosion is influenced by | oxygen. |
| Exfoliation corrosion is the visible form of | intergranular corrosion. |
| The QPL | displays specific products that comply with military specifications. |
| The type of chemical remover to be used depends on the | type of organic finish system to be removed. |
| When using general chemical removal procedures, at what strength should the remover be applied? | Full strength |
| All chemical removers have a shelf life of | six months. |
| In abrasive blasting, abrasive media is propelled with | air pressure or water. |
| The paint edges around the chemically stripped areas are feathered in order to | ensure a smooth, overlapping transition between the old and new paint surfaces. |
| Prepaint treatments shall be applied | immediately after corrosion removal procedures. |
| The chemical conversion coated surface should dry a minimum of | 2 hours. |
| CPCs are used to prevent | corrosive materials from contacting and corroding bare metal surfaces. |
| The two categories that CPCs are separated into include | water displacing and non-water displacing. |
| Low viscosity CPCs are best suited for what type of application? | Spraying |
| What is used to determine the dimensions of a corrosion pit? | Depth gauge |
| The depth gauge is not suitable for determining the depth of stress corrosion due to its relatively | large size of indicator pin. |
| Which formula would you use to determine maximum corrosion pit depth? | (A + B) ÷ 2 – C = Depth |
| What special requirement(s) must be met when mechanically removing coatings on steel and titanium alloy? | Area must be well ventilated only |
| Which is used to remove paint from advanced composite surfaces? | Abrasive blasting |
| When establishing a new PMB booth, who must approve the facility prior to use? | System program director |
| Which PMB type is not authorized for use on aircraft? | Type VI |
| When using the PMB cabinet blaster, check the media level | prior to use. |
| What can happen if you dwell too long in the same spot when abrasive blasting? | Stress concentrations can develop |
| What is your most important safety consideration when you’re using a portable power tool? | Following standard operating procedures for each type of tool |
| Portable power tools used in areas where oil or grease is present must have | special cords. |
| With a portable power tool, the function of a constant-pressure switch is to | shut off the power when it is released. |
| Goggles and face shields are important when working | with pneumatic tools. |
| If you do not use a diffuser nozzle, what air-pressure setting is used for shop cleaning? | 15 psi |
| HVLP stand for high | volume low pressure. |
| What is the maximum nozzle pressure of a HVLP spray gun? | 10 psi |
| What type of spray gun is made with an external airtight container? | Pressure-feed |
| What will happen to the paint coating if you hold a spray gun too close to the surface during painting operations? | Runs and sags |
| When should you dismantle a spray gun? | After each use |
| What is the minimum number of locations an aircraft must be grounded to before it can be electrostatically painted? | 2 |
| When painting fueled aircraft, the LEL should be from 0 to | 20% |
| Hoses that are used with the air-assisted airless spray unit are | lined with Teflon and wrapped with wire. |
| Air-assisted airless spray gun nozzles are often made of | tungsten carbide. |
| When using an air-assisted airless spray gun, the spray pattern is produced by the | milled slot in the face of the spray tip. |
| What is the most common cause of coating failure? | Inadequate surface preparation |
| The probable cause of a protective coating spray pattern with a split spray is | air and fluid feeds not properly balanced. |
| What is a common cause of streaking when spray painting | Dirty air cap |
| What is a cause of orange peel when spray painting? | Coating material to cold |
| Using an improper thinner causes | pinhole cavities. |
| What coating system component would you add to paint to develop color and hiding power? | Pigment |
| The liquid portion of the paint coating is the | vehicle. |
| Which type of polyurethane coating is used on aerospace weapons systems? | Type I |
| What type and class(es) of rain erosion coating dissipate static electricity? | Type II, Class A & B |
| What type of walkway coating material is undesirable because of aerodynamic smoothness requirements? | II |
| Aircraft painted at field level are limited to what painting operations? | Maintenance only |
| Who augments the local paint scoring system when determining a paint schedule? | MAJCOM & SPD |
| What is the standard exterior finish coating for Air Force aircraft? | High solid polyurethane |
| What do you do with jelled or lumpy coating materials? | Discard them at once |
| When using a #2 Zahn cup, how is the viscosity expressed? | Seconds through the cup |
| Which cup is preferred for measuring the viscosity of high-solid coatings? | #4 Ford cup |
| The general top coating sequence for small aircraft-tail toward hanger exhaust is? | Forward fuselage, upper wings, lower wings, aft fuselage and tail section |
| When should specialty walkway coatings be applied to the aircraft? | Before top coating |
| When mixing a Sempen™ paint applicator pen, the temperature should be | room temperature. |
| Prior to use, how many seconds should a Sempen™ paint applicator be mixed? | 60 seconds |
| What drying process cures by a chemical reaction? | Polymerization |
| Rain erosion resistant tapes are designed to protect an aircraft from | hail. |
| During rain erosion resistant tape application, what is the minimum recommended Fahrenheit temperature? | 60° |
| Why are rented or polyester rags not used when applying protective boots and tapes? | Rags may contaminate the area |
| Where are the USAF markings placed on aircraft? | Upper left and lower right wings |
| Where are the U.S. Air Force markings placed on camouflaged aircraft? | They are not required |
| Who is the approving authority for the display of the American flag on Air Force aircraft? | HQ USAF |
| What component, of a computerized stencil system, cuts stencils to final size? | Plotter |
| What material is used to make computer-generated decals? | Vinyl |
| After a decal is applied to an aircraft, what protects it against abrasion? | Edge sealing compound. |
| A rapid way of preparing a sign is by | stenciling. |
| Whenever hazard controls fail to provide complete protection, what must you do? | Wear personal protective clothing and equipment. |
| How many of the chemicals you use in your job are considered hazardous materials? | Nearly all |
| Solid waste can be any material that is essentially waste-like, abandoned, or | non-liquid. |
| How far from the installations property line shall hazardous waste storage facilities be located? | 50 ft |
| 90-day accumulation sites for hazardous waste containers should be able to contain the volume of | the largest container or 10% of the volume of all containers, whichever is greater. |
| How often should hazardous waste containers be inspected for release problems? | Weekly |
| Specific guidance for operating a hazardous waste accumulation point is available from personnel at the base environmental function, bioenvironmental engineer, and | ground safety. |
| How many gallons of hazardous waste is the maximum amount you can store in one satellite point? | 55 |
| To what capacity are hazardous waste containers filled? | 90% |
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