Flashcards on Aircraft Plumbing Systems and Flexible Hoses
Aircraft Plumbing Systems & Flexible Hoses Explained
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Aircraft Fluid Lines and Hose Installation
25 cards
Card 1
Question: How much pressure is generally used to proof test a flexible hose assembly?
Answer: About two times the recommended operating pressure for the hose.
Card 2
Question: When should grommets be used in tubing installations?
Answer: Anytime the tubing passes through a hole in the aircraft structure.
Card 3
Question: What identification markings are usually found on flexible rubber hoses?
Answer: Hose size, manufacturer, date of manufacture, pressure limits, and temperature limits.
Card 4
Question: What maximum percent of the wall thickness can scratches and nicks be repaired if less than what percentage?
Answer: 10 percent.
Card 5
Question: What is the flare angle for aviation tubing?
Answer: 37 degrees.
Card 6
Question: Name at least two synthetic materials commonly used in the manufacture of flexible hose.
Answer: Buna-N and Neoprene (also Butyl, EPDM, and Teflon).
Card 7
Question: What is the maximum interval for repeating the required markings on a flexible hose?
Answer: Not more than nine inches along the length of the hose.
Card 8
Question: Is the size of a flexible hose determined by its inside or outside diameter?
Answer: By the inside diameter.
Card 9
Question: How much slack must be left in a flexible hose during installation?
Answer: Five to eight percent of the total hose length.
Card 10
Question: What are the three parts of a Military Standard (MS) flareless-tube fitting?
Answer: The body, the sleeve, and a nut.