Cleaning and corrosion control Flashcards
Is there any requirement for cleaning an aircraft prior to an annual or 100 inspection?
Yes, in accordance with FAR part 43 appendix D
Discuss the general precautions that should be observed when washing an airplane
Avoid or protect areas which may be damaged or contaminated, such as pitot tubes and static tubes hinges, sealed areas and bearings
What are some of the more common light duty cleaning agents?
Soap or detergent and water
What materials are commonly used as heavy duty cleaners
Solvents, and emulsions
What are the preferred cleaners for plastic surfaces such as windshields?
Mild soap in water or manufacture, approved, cleaners
What type of cleaning agents should be used to remove grease oil or fuel from aircraft tires?
Soap and water
Give examples of the factors that cause or influence corrosion
Environmental conditions, dissimilar metals, type of metal
Name the different types of corrosion that can be found on an aircraft
Fretting, exfoliation, filiform, pitting surface intergranular
What is the cause of filiform corrosion
Improper or incomplete, caring of a wash primer prior to painting
What is a visible signs of filiform corrosion?
Blistered paint surfaces
What are the two primary factors that may cause development of stress corrosion
It corrosive environment and sustained tensile stress
What are the areas of an aircraft that are prone to corrosion?
Battery compartments, bag bin, galleys, landing gear, wing flap, lavatories, end, any areas that can and trap water
What is another name for corrosion caused by contacted dissimilar metals
Galvanic corrosion
The lifting and flaking of a metal surface due to the buildup of corrosion products as a result of severe intergranular corrosion is an indication of what form of corrosion
Exfoliation
What are the visible signs of fretting corrosion?
The corrosion residue has a dark, smoky appearance streaming back from rivet heads