Answers |Guaranteed to Pass
Why are aircraft cleaned? Give at least five reasons. ✔Correct Answer--More accurate
inspection results, easier to spot possible failures, allows for a safer/easier flight, better
appearance, prevents wear.
What are the three categories of washing aircraft? Describe each. ✔Correct Answer--wet-
cleans grease, oil, dirt
dry- cleans airport film & some dirt.
Polishing- restores
How are magnesium engine parts cleaned? ✔Correct Answer--Use commercial solvent to
wash and use MEK; then decarbonize then scraped or grit blasted.
How are aircraft windshields cleaned? ✔Correct Answer--soap & fresh water & chamois
Lead acid and Ni-cad battery spills are neutralized with what? ✔Correct Answer--Baking soda
neutralizes lead acid, Boric acid neutralizes Ni-cad.
What is used to clean acrylics and rubber? ✔Correct Answer--aliphatic naphtha
What precaution must be taken when cleaning plastic surfaces? ✔Correct Answer--no dry
cloth- cloth scratched + attracts dust
Kerosene is used to clean what type of parts? ✔Correct Answer--powerplant parts
What is M.E.K? ✔Correct Answer--Methyl Ethyl
Ketone which is a solvent cleaner for metal surfaces and paint stripper.
What is the purpose of material safety data sheets? ✔Correct Answer--provides information
like Health precautions, Flammability, Ventilation requirements, and other information in case
of an emergencies
What is a liquids flashpoint? ✔Correct Answer--The temperature which causes fuel vapor/oil
vapor to burst into flame
What is a Stoddard solvent? ✔Correct Answer--Stoddard solvent is the most commonly used
petroleum base solvent in aircraft cleaning.
Define trichloroethane. ✔Correct Answer--trichloroethane is a safety solvent made for
general cleaning and the removal of grease.