Term
| In case of a conflict with corrosion control procedures, which manual would take precedence? |
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Definition
|
|
Term
| Which volume of NAVAIR 509 covers procedures for aircraft structures? |
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Definition
|
|
Term
| which volume of NAVAIR 509 covers procedures for avionics? |
|
Definition
| Volume 3- Avionics and electronics |
|
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Term
| which volumes would you need in the navy and marine corps to have a "complete set" for aircraft corrosion control? |
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Definition
|
|
Term
| which volumes would you need in the navy and marine corps to have a "complete set" for avionics corrosion control? |
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Definition
|
|
Term
| which volume of the NAVAIR 509 is used by the navy and marine corps and list the recommended, consumable materials for cleaning, corrosion prevention, surface treatment, preservation and refinishing of aircraft? |
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Definition
|
|
Term
| which volume is only for air force use? |
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Definition
|
|
Term
| what is the definition of corrosion? |
|
Definition
| Corrosion is the electrochemical deterioration of a material or its properties due to its chemical reaction with the surrounding environment. |
|
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Term
| what volume contains the index and glossary and must always be available for reference? |
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Definition
|
|
Term
| what are the two most important factors in preventing corrosion and the only ones which can be controlled by field personnel? |
|
Definition
| Are the removal of the electrolyte and the application of protective coatings |
|
|
Term
| what should a preventive maintenance program at the organizational/unit and intermediate maintenance activities include? |
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Definition
a. reduce the maintenance time spent repairing corrosion damage
b.improve avionic system reliabitlity, durability and service life
c. make the military community aware of the extent of the problems.
d. report any deficiencies with materials and processes associated with corrosion control. |
|
|
Term
| what do all successful aircraft and avionic cleaning and corrosion prevention/control efforts depend on? |
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Definition
| depend on a coordinated, comprehensive preventive maintenance program. |
|
|
Term
| what determines the rate at which corrosion occurs when two dissimilar metals make electrical contact in the presence of an electrolyte? |
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Definition
| Depends on the difference in their corrosive tendencies |
|
|
Term
| what is the most common type of corrosion |
|
Definition
| uniform surface corrosion |
|
|
Term
| most alloys in aircraft construction are made up of regions called... |
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Definition
|
|
Term
| what is the most common corrosion found on aluminum and magnesium alloys? |
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Definition
|
|
Term
| what is the special form of corrosion that occurs on metal surfaces having an organic coating system? |
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Definition
|
|
Term
| almost all alloys used in aircraft construction are sensitive to which form of corrosion? |
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Definition
| Stress Corrosion cracking |
|
|
Term
| what are the four conditions necessary for corrosion to occur? |
|
Definition
1. a metal must be present which has the tendency to corrode. this metal is known as the anode.
2.a dissimilar conductive material known as the cathode, has fewer tendencies to corrode than the anode.
3.a conductive liquid, the electrolyte, must connect the anode and cathode.
4. electrical contact between the anode and cathode must exist. |
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Term
| how is the corrosive product of iron or steel easily recognized? |
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Definition
| reddish-brown oxide (rust) |
|
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Term
| exposure to a salt water environment can cause what type of corrosion on stainless steel? |
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Definition
a. crevice corrosion; pitting in marine
b. corrosion cracking, inter granular corrosion, surface corrosion |
|
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Term
| what is used to protect aluminum and aluminum alloy surfaces? |
|
Definition
1. chemical conversion coating
2. paint
3. preservative compound |
|
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Term
| copper and copper alloys can be found in which avionic systems? |
|
Definition
a. contacts
b. springs
c. leads
d. connectors
e. printed circuit board conductors
f. wires |
|
|
Term
| what metal has a tendency to grow whiskers on plated wire and other planting applications? |
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Definition
|
|
Term
| Solder flux is identified by what characteristics? |
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Definition
| Solder flux residues may be both conductive and corrosive resulting current leakage paths. They appear as amber-colored globules, drips or tails at or near the solder join |
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Term
| bacteria and fungi feed on organic material and release what corrosive elements? |
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Definition
|
|
Term
| if shade is not available, should you clean on aircraft if the outdoor temperature is high (80 degrees F or 27 degrees C, and above)? |
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Definition
| Cleaning operations should be scheduled for early morning and late afternoon or night |
|
|
Term
| what method of cleaning must always be selected that will accomplish the task when cleaning avionics equipment? |
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Definition
| Selection basis- always select the mildest form of cleaning |
|
|
Term
| why is it important to wet the exterior of the aircraft before cleaning? |
|
Definition
| To cool surfaces and help prevent fast evaporation during hot weather |
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|
Term
| Why is a thorough inspection of the item needed when determining how to clean avionics equipment? |
|
Definition
| To determine the type of circuitry and components involved. |
|
|
Term
| Why is the electrical grounding of aircraft required during all cleaning operations? |
|
Definition
| To guard against the danger of static electricity |
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|
Term
| In Avionics cleaning, what inspection method usually indicates the extent of contamination and corrosion damage? |
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Definition
|
|
Term
| In order to prevent streaking, how should the aircraft be sprayed? |
|
Definition
| work from lower surfaces upward and out |
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|
Term
| The waterless wipe down alternate method uses which water displacing corrosion preventive compound? |
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Definition
|
|
Term
| Routine scheduled cleaning should not be performed at temperatures below _____ degrees fahrenheit |
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Definition
|
|
Term
| The water break test is performed by rinsing the area with fresh water and inspecting it for which of the following? |
|
Definition
| For any water beading or incomplete wetting |
|
|
Term
| What are the avionics post-cleaning procedures? |
|
Definition
a. Reinspect area for signs of residue, surface film of water
b. repeat cleaning procedures if area is not clean,- water-displacement, preservation and lubrication should follow cleaning and drying steps. |
|
|
Term
| According to the lesson, aircraft wash rack cleaning waste shall receive the equivalent of ____ sewage treatment |
|
Definition
|
|
Term
| The blue diamond of the hazardous chemical or material identification generally identifies what hazard? |
|
Definition
|
|
Term
| The hazardous chemical or material identification label diamond that uses the abbreviation "ALK" is which diamond? |
|
Definition
| White Diamond/Specific hazard/ Alkali |
|
|
Term
| What test is used to determine if the surface is clean enough to apply coating materials? |
|
Definition
|
|
Term
| What is the fastest and most efficient method or drying? |
|
Definition
| Solvent Ultrasonic cleaner |
|
|
Term
| What can be used to dry all types and sizes of equipment and components? |
|
Definition
|
|
Term
| What is the first step in preventing aircraft corrosion? |
|
Definition
|
|
Term
| Proper dilution is important in cleaning. What can happen if too much cleaner is used and the solution becomes slippery? |
|
Definition
| Preventing the washing pad from loosening the soil and making rinsing more difficult |
|
|
Term
| When is the use of high alkaline cleaners authorized on naval aircraft? |
|
Definition
| High alkaline cleaning compounds are not authorized for Navy aircraft. |
|
|
Term
| What will happen if you don't release pressure on the portable 45 gallon Foam generating cleaning unit? |
|
Definition
| May damage aircraft surfaces |
|
|
Term
| What is the only position permitted for operation of the universal washer unit? |
|
Definition
|
|
Term
| How does the circulating air buying oven dry avionic equipment and components? |
|
Definition
| Uses circulating air and temperature |
|
|
Term
| What conditions requires immediate cleaning? |
|
Definition
| When areas are exposed to any of the following, clean immediately: Spilled electrolyte and corrosive deposits. |
|
|
Term
| The portable 15 gallon foam generating cleaning unit is _____ for cleaning hard to reach areas. |
|
Definition
| Compact, light and ideal. |
|
|
Term
| List the approved methods for applying lubricants. |
|
Definition
a.Grease guns: lever or pressure type
b. Oil, squirt and aerosol spray cans
C. hand or brush |
|
|
Term
| The day to day application of CPCs to prevent corrosion on operational aircraft is known as ___ preservation |
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Definition
|
|
Term
| Which type of MIL-C-81309, corrosion preventive compound to non-conductive? |
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Definition
|
|
Term
| VV-L 800, lubricating oil, general purpose, preservative, water displacing, should not be used on what? |
|
Definition
| Do Not use in fuel cells or fuel systems |
|
|
Term
| How should lubricants be applied to prevent accumulation of dust, dirt and other foreign matter? |
|
Definition
| Sparingly, it is also important to wipe away any excess lubricants |
|
|
Term
| What is AMLGUARD primarily appled to? |
|
Definition
|
|
Term
| What is a thin, relatively dry, semitransparent film through which identification can be read ? |
|
Definition
|
|
Term
| When should preservatives be used ? |
|
Definition
1.After avionic cleaning
2. on avionic equipment prior to shipment
3. on equipment or components that are non operating or idle
4. whenever access achieved to parts normally in accessible for inspection without disassembly and inspection
5.whenever paint films in difficult to protect areas require additional
6 after immersion or exposure to fresh water, salt, water or fire extinguisher agents |
|
|
Term
| List items that shall not be preserved or come in contact with preservatives. |
|
Definition
Laminated circuit boards that are informal coated
2 non metallic surfaces such as control box face plates ( acrylic)
3 tunable capacitors and inductors
4 internal surfaces of waveguides and tone tanks
5 relay and circuit breaker contacts
6 fuses |
|
|
Term
| When packing avionics with bubble wrap, what should be done to prevent condensation |
|
Definition
|
|
Term
| What should be used to protect micro miniature printed circuit boards against moisture and contamination? |
|
Definition
|
|
Term
| When placed in a sealed container what is used to absorb moisture and lower humidity |
|
Definition
|
|
Term
| Why would you use humidity indicator in a shipping container? |
|
Definition
| A humidity indicator is used to determine if a desiccant can maintain an acceptable relative |
|
|
Term
| What area of an air craft probably receives more abuse than any other area on the aircraft? |
|
Definition
|
|
Term
| Why are areas around fasteners a corrosion prone trouble spot? |
|
Definition
| These areas are subject to high operational loads, moisture, intrusion and susceptibility of the skin to corrosion. |
|
|
Term
| Magnesium parts are____ corrosion prone |
|
Definition
|
|
Term
| The flexible air frame of military aircraft prohibits effective ____ and therefore allows moisture and other fluids to enter |
|
Definition
|
|
Term
| Frequent corrosion inspections are essential to the overall corrosion control program and are the responsibility of who and contribute to what? |
|
Definition
| All maintenance personnel and contribute navy's corrosion control program |
|
|
Term
| Which inspection method is most widely used? |
|
Definition
|
|
Term
| What becomes ineffective due to improper location, plugged by sealants, fasteners, dirt, grease and debris? |
|
Definition
|
|
Term
| What is required when damage exceeds limit? |
|
Definition
|
|
Term
| What set of processes minimizes costs due to corrosion damage? |
|
Definition
| By early detection, identification and treatment, the costs resulting from corrosion damage are minimized |
|
|
Term
|
Definition
Sever corrosion : its general appearance may be similar to moderate corrosion with sever inter granular corrosion, blistering exfoliation, scaling or flaking. The pitting depths are deeper than 10 mils.
b. This damage must be removed by extensive mechanical sanding or grinding. |
|
|
Term
| Which type of magnifying glass should be used for detailed corrosion inspection? |
|
Definition
|
|
Term
| What factors determine the method used to remove corrosion from metal surfaces? |
|
Definition
| The method used will depend on the type of metal, the location and accessibility of the corroded area, the degree of damage and the type of corrosion involved. |
|
|
Term
| What is required when corrosion is detected? |
|
Definition
| A specific and immediate program for corrective treatment is required. |
|
|
Term
| What method of corrosion removal is not authorized? |
|
Definition
| Chemical corrosion removal techniques. |
|
|
Term
| What technique shall be used to remove paint from composite and fiber glass surfaces? |
|
Definition
| Only mechanical removal techniques. In NAVAIR 509 unless specific exceptions are provided in the appropriate maintenance manuals |
|
|
Term
| What are the two types of equipment are used to propel dry abrasives? |
|
Definition
|
|
Term
| Choices for corrosion removal processes are limited for some surfaces including chrome, nickel, gold, silver, cadmium, tin and other accessories. What should you use to remove tarnish and light corrosion from these surfaces? |
|
Definition
| Eraser, brushes, non abrasive pads, abrasive mat and abrasive cloth |
|
|
Term
| What are the three different classifications of encapsulants? |
|
Definition
Dotting compounds
Fungus-proof coatings
Conformal coating
Refer to the NA 509 vol 3 ch 5 for additional information. |
|
|
Term
| What must solvent based adhesion promoters be kept away from due to their ____ properties? |
|
Definition
|
|
Term
| What tools are used to apply sealants? |
|
Definition
1. brush
2. spatula
3. caulking gun
4.masking tape |
|
|
Term
| What must be performed to determine if the sealant can be used past it shelf life? |
|
Definition
| Sealant containers shall be inspected to determine if the material has exceeded is shelf life. |
|
|
Term
| What shall be provided in all painting and storage areas to prevent the build up of solvent vapors? |
|
Definition
|
|
Term
| What is the primary objective of any paint system? |
|
Definition
| To protect all exposed surfaces against corrosion and any other forms of deterioration |
|
|
Term
| What is the environmentally preferred alternative for touch up painting since they produce little paint waste and do not require solvent clean up? |
|
Definition
|
|
Term
| When painting, where is it necessary to avoid the inhalation of vapors and dust? |
|
Definition
|
|
Term
| What can shorten the effective storage shelf life of painting materials? |
|
Definition
| Extreme storage temperatures |
|
|
Term
| What condition is a requirement for mandatory cleaning of equipment? |
|
Definition
|
|
Term
| What steps prevent accumulation of soils and potentially corrosive materials to equipment? |
|
Definition
| wiping down the equipment |
|
|
Term
| When working on lighting systems and assemblies, avionic technicians will usually find that corrosion is heaviest at which locations? |
|
Definition
| at the base of the bulb because of the dissimilar metal contact between the bulb and socket |
|
|
Term
| What are most plugs and connectors plated with? |
|
Definition
|
|
Term
| What material is extremely toxic, does not permit any drilling, sanding or other mechanical work, and shall only be worked with under a license from the nuclear regulatory commission? |
|
Definition
|
|
Term
| What material shall not be painted or oiled? |
|
Definition
| Natural and synthetic rubber shall not be painted or oiled |
|
|
Term
| Before starting emergency treatment, particularly in those instances where fuel cells have been ruptured and fuel or fueled vapors are present, who should first certify that the aircraft is both fire and explosion safe? |
|
Definition
| Gas Free Engineering (GFE),Gas Free Engineering technician (GFET) or the safety officer. |
|
|
Term
| What must you wear to handle broken carbon fiber composite material? |
|
Definition
| Wear a full face piece respirator when exposed to these materials, and, in addition, wear close weave cotton gloves when handling these materials. |
|
|
Term
| What is the primary concern for removing volcanic ash? |
|
Definition
| The extreme abrasiveness of the ash. It is not a significantly corrosive material. |
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