chapter 8 Fluid lines and fittings Test 2

Due to varying elasticities of tubing, it may be necessary to bend the tube past the required bend to allow for _.

Springback

Before bending aluminum alloy tubing, pack it with______

Sand shots or aluminum powder

The flared end of a tube should be no larger than the ___ being used.

Largest diameter of the sleeve

In preparing a flareless fitting, _ is necessary to form the seal between the sleeve and the tube without damaging the __.

Presetting: connector

As a rule, beading machines are limited to use with tubing over in diameter unless special rollers are supplied

1 15/16ths inch

It is suggested that oxygen tubing be proof pressure tested using ___________________ and inspected for leaks by _______________________.

Dry nitrogen; submerging in water

Interior surfaces of airspeed indicator tubing, oxygen, or other plumbing lines should not be _.

Painted

Titanium or stainless steel tubing needs primer or paint in areas of _.

Dissimilar metal

Any tube that carries physically dangerous material will be marked with tape displaying the letters __.

PHDAN

To aid in the rapid identification of the various tubing systems and operating pressures, each fluid line in the aircraft is identified by __.

A strip of tape around line near each fitting

Identification tape codes are applied in accordance with _____and ____, established to standardize fluid line identification throughout the industry.

FAA regulations and MIL-STD-1247C

When storing fabricated tubing and tube assemblies, do not use pressure-sensitive tape as a substitute for _.

Protective closures

Which of these on tubing can spread and split the when it is flared?

Draw marks

Aluminum alloy tubing used in low-pressure oxygen systems is normally:

Double-flared

Corrosion-resistant steel tubing used in brake systems is normally:

Double-flared

As a guide, the pressure tested for fabricated hose assemblies is at least how many times the system pressure?

1.5

Identification tags are applied to all lines less than 4 inches in diameter except:

All of the above

Instead of tags for identification, lines in oily environments are:

Painted

Which of these is NOT indicated by identification tape codes on a fluid line?

Temperature

Which of these requires protection of the entire assembly when storing, in addition to protective closures at end fittings?

Oxygen tube assembly