chapter 7 corrosion and cleaning Test 2

——— are corrosive agent found in jet fuels

Microorganisms

The most common corrosive agents are———,——— and ——— the most common media for these agents are ——— and the

Acid

Salts

Alkelis

Water

Atmosphere

Control cables with internal corrosion should be_____

Replaced

When inspecting engine exhaust trail areas for corrosion, special attention should be paid to areas around ____ and ____

Skin crevices

Rivet heads

Regular ——— will minimize corrosion and battery compartments and vent openings

Cleaning

Neutralization of acids

On the external aircraft surface in areas where metal skin is joined by spot welding, more advance corrosion causes ———, which can be detected by siding along ———

Skin buckling

Spot welding seems Or by using a straight edge

When welding it is important that the ——— be removed from the metal surface immediately after the joining operation as it could cause severe pitting

Residual flux

The only technique for preventing the condition to keep potential moisture entry points_____

Filled with sealant or suitable preservative compound

Which two physical factors have a direct bearing on corrosivity of water

Temperature and velocity

Aluminum Alois are resistant to which alkali

Ammonia

With the exception of sandwich structures, design specifications, usually require the aircraft, which of the following installed in all areas where water collects

Drains

Which of these preventative measures help prevent corrosion and fuel tanks

Using biocide in the fuel tank

Which one of these corrosive agents can likely be found in air cargo, and must be dealt with immediately it found spilled

Mercury

Seaplane and amphibian aircraft bilge areas are protected by what near the low point in each bilge compartment to inhibit the attack on exposed metal surfaces

Potassium dichromate

Which of these contaminants is not corrosive by self, but will attract them and retain moisture, thereby causing a corrosive attack

Food spilled in the galley

As a corrosion trouble spot, which of these is not something that AMT needs to pay special attention to in the wheel well and landing gear area

Covering all areas with extra preservative as it wears off quickly

Regarding wheel well and landing gear partially applied preservative

Will mask corrosion

Which of these is a prime bond for corrosion due to the dissimilar metal contact?

Piano hinges

Two specific types of atmosphere ——— and ——— are unusually corrosive

Industrial

Marine

Control cables with light external corrosion should be———

Cleaned with Stainless steel, wire brush and recoded with preservative