Hoses

Question 1

How are hose lines identified

Answer 1

• Military Spec Of Hose
• Size Indicated By A Dash (-) Or Fraction Of An Inch For
• Manufacturer’s FederalSupply Code No
• Cure Date ForAge Control

Question 2

How are hose assemblies removed

Question 3

What are three criteria to be aware of during fitment/routing of hoses

Answer 3

verify that the aircraft manufacturer specifies a flexible hose is
appropriate.

Pre-installation Inspection

Never install a flexible hose tightly between two fittings. Always ensure there is enough allow for expansion and contraction

Question 4

Describe firesleeving

Answer 4

If a fluid line must pass near a hot exhaust manifold, the line must be protected with a suitable fire shield

Question 5

how are flexible hoses constructed

Answer 5

Consists of an inner liner

layers of reinforcement to
provide strength

an outer cover to protect from
physical damage.

Question 6

how are hoses normally classified

Answer 6

Normally classified by the amount of pressure they are
designed to withstand (Low, medium and high pressure)

A lay line shows if a hose is twisted when it
is installed

The size is determined by its inside diameter measured in increments of 1/16 inch.