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Related Flashcards
Cards In This Set
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What are aircraft plumbing lines usually made of?
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Metal tubing or flexible hose and fittings.
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How is metal tubing sized?
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By wall thickness and outside diameter. sixteenths of an inch.
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What precautions should be taken when routing fluid lines adjacent to electrical wiring?
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Route fluid lines below electrical wiring. Maintain at least 6 inch clearance. Never closer than one-half inch.
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What is the purpose of the identification stripe running along the length of a flexible hose?
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"Lay line" that indicates whether the line has twisted.
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How are standard AN type and AC type fluid line fittings identified?
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AN - Blue or black. Courser threads. small shoulder. 37 degree flare cone.AC - Gay or Yellow. Completely threaded. 35 degree flare cone.
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What is the purpose of using quick disconnect couplings in fluid systems?
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Provides a means of quickly disconnecting a line without a loss of fluid or air entering the system.
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How is flexible hose sized?
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By inside diameter and sixteenths of an inch.
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How much slack must be left in a flexible hose during installation?
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Five to eight percent of the total hose length.
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What are the three parts of a Military Standard (MS) tube fitting?
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The body, sleeve , and nut.
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What will be the result of over tightening a flareless tube fitting?
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The sleeve will cut too deep into the tube and cause the tube to be weakened.
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What are the two kinds of flares used in aircraft plumbing systems?
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Single and double flared.
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What is the advantage of flexible Teflon hose over rubber hose?
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Teflon has a better resistance to chemicals and higher strength properties at higher temperatures.
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What precaution should be taken when deburring and inspecting the flared end of a tube?
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Inspect for cracks and unsure the wall thickness hasn't been minimized by the deburring process.
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