Cleaning and Corrosion Control – Study Guide and
Procedures
A primary reason why ordinary or otherwise nonapproved cleaning compounds should not be
used when washing aircraft is because their use can result in
A-hydrogen embrittlement in mental structures
B-hydrogen embrittlement in nonmetallic materials
C-a general inability to remove compound residues - ANS✔✔ A-hydrogen embrittlement in
mental structures
How may magnesium engine parts be cleaned?
A-soak in a 20 percent caustic soda solution
B- Spray with MEK (methyl ethyl ketone.)
C-Wash with a commercial solvent, decarbonize, and scrape or grit blast. - ANS✔✔ C-Wash with
a commercial solvent, decarbonize, and scrape or grit blast.
When an anodized surface coating is damaged in service. it can be partially restored by
A-applying a thin coat of zinc chromate primer
B-chemical surface treatment
C-use of a suitable mild cleaner - ANS✔✔ B-chemical surface treatment
For which of the following reasons would a water break test be conducted?
, A-To make certain that a newly alodized aluminum surface is sufficiently coated
B-To make certain that a bare metal surface is thoroughly clean
C-To make certain that an anodizing coating has been sufficiently removed before an electrical
bonding connection can be made - ANS✔✔ B-To make certain that a bare metal surface is
thoroughly clean
Select the solvent recommended for wipe down of cleaned surfaces just before painting
A-Aliphatic naptha
B-dry cleaning solvent
C-Aromatic naptha - ANS✔✔ A-Aliphatic naptha
Nickle-cadmium battery cases and drain surfaces which have been affected by electrolyte
should be neutralized wish a solution of
A-boric acid
B-sodium bicarbonate
C-potassium hydroxide - ANS✔✔ A-boric acid
Which of the following are acceptable to use when utilizing chemical cleaning agents of aircraft?
A. Synthetic fiber wiping cloths when using flammable agent.
B-Cotton fiber wiping cloths when using a flammable agent.
C-Atomizing spray equipment - ANS✔✔ 2 and 3
Select the solvent used to clean acrylics and rubber.
Procedures
A primary reason why ordinary or otherwise nonapproved cleaning compounds should not be
used when washing aircraft is because their use can result in
A-hydrogen embrittlement in mental structures
B-hydrogen embrittlement in nonmetallic materials
C-a general inability to remove compound residues - ANS✔✔ A-hydrogen embrittlement in
mental structures
How may magnesium engine parts be cleaned?
A-soak in a 20 percent caustic soda solution
B- Spray with MEK (methyl ethyl ketone.)
C-Wash with a commercial solvent, decarbonize, and scrape or grit blast. - ANS✔✔ C-Wash with
a commercial solvent, decarbonize, and scrape or grit blast.
When an anodized surface coating is damaged in service. it can be partially restored by
A-applying a thin coat of zinc chromate primer
B-chemical surface treatment
C-use of a suitable mild cleaner - ANS✔✔ B-chemical surface treatment
For which of the following reasons would a water break test be conducted?
, A-To make certain that a newly alodized aluminum surface is sufficiently coated
B-To make certain that a bare metal surface is thoroughly clean
C-To make certain that an anodizing coating has been sufficiently removed before an electrical
bonding connection can be made - ANS✔✔ B-To make certain that a bare metal surface is
thoroughly clean
Select the solvent recommended for wipe down of cleaned surfaces just before painting
A-Aliphatic naptha
B-dry cleaning solvent
C-Aromatic naptha - ANS✔✔ A-Aliphatic naptha
Nickle-cadmium battery cases and drain surfaces which have been affected by electrolyte
should be neutralized wish a solution of
A-boric acid
B-sodium bicarbonate
C-potassium hydroxide - ANS✔✔ A-boric acid
Which of the following are acceptable to use when utilizing chemical cleaning agents of aircraft?
A. Synthetic fiber wiping cloths when using flammable agent.
B-Cotton fiber wiping cloths when using a flammable agent.
C-Atomizing spray equipment - ANS✔✔ 2 and 3
Select the solvent used to clean acrylics and rubber.
