Fire Protection System

Question 1

In what area of an aircraft would you find a carbon monoxide detector?

Answer 1

Cabin and cockpit

Question 2

What occurs when a visual smoke detector is activated?

Answer 2

A lamp within the indicator illuminates autmoatically

Question 3

The types of fire-extinguisher agents for aircraft interior fires are

Answer 3

water, carbon dioxide, dry chemical and hologenated hydrocarbons

Question 4

When air samples contain carbon monoxide, portable carbon monoxide detectors containing yellow silica gel will turn what color?

Answer 4

Green

Question 5

Smoke detection instruments are classified by their method if

Answer 5

detection

Question 6

Smoke detectors that use a measurement of light transmissibility in the air are called

Answer 6

photelectrical devices

Question 7

A contaminated carbon monoxide portable test unit may be returned to service by

Answer 7

removing the indicating element and installing a new indicating element

Question 8

Which fire-detection system measures temperature rise compared to a reference temperature?

Answer 8

Thermocouple

Question 9

A carbon dioxide (CO2) hand held fire extinguisher may be used on an electrical fire if the

Answer 9

horn is nonmetallic

Question 10

The proper fire extinguishing agent to use on an aircraft brake fire is

Answer 10

dry powder chemical

Question 11

If an engine fire develops during the starting procedures, the first step you should take in extinguishing the fire is to

Answer 11

continue cranking to start and blow it out

Question 12

Smoke in the cargo and/or baggage of an aircraft is commonly detected by which instrument?

Answer 12

Photoelectric cell

Question 13

Light refraction smoke detectors are activated when the detector

Answer 13

senses light refracted from the smoke particles passing through a chamber

Question 14

Why does the Fenwal fire-detection system use spot detectors wired parallel between two seperate circuits?

Answer 14

A short may exist in either circuit without causing a false fire warning

Question 15

What type of thermally sensitive salt is used in Fenwal fire detection systems?

Answer 15

Eutectic salt

Question 16

A fire extinguisher container can be checked to determine its charge by

Answer 16

weighing the container and its contents

Question 17

What is the color code for fire extinguisher lines?

Answer 17

Brown

Question 18

The most common cause of false fire warnings in a continuous loop fire detection systems is

Answer 18

dents, kinks or crushed sensor sections

Question 19

A thermocouple in a fire warning system causes the warning system to operate because

Answer 19

it generates a small current when heated

Question 20

The thermocouple fire-warning system is activated by a

Answer 20

rate-of-temperature rise

Question 21

When used in fire detection systems having a single indicator light, thermal switches are wired in

Answer 21

parallel with each other and in series with the light

Question 22

Built in aircraft fire-extinguishing systems are ordinally charged with

Answer 22

halogenated hydrocarbons and nitrogen

Question 23

In reference to aircraft fire extinguishing systems;
1. During removal and installation, the terminals of discharge cartridges should be grounded or shorted.
2. Before connecting cartridge terminals to the electrical system, the system should be checked with a voltmeter to see that no voltage exists at the terminals connections

Answer 23

Both No.1 and No.2 are true

Question 24

What method is used to detect the thermal discharge of a built-in-fire-extinguisher system?

Answer 24

A rupture of the red plastic disk in the thermal discharge line

Question 25

The thermal switches of a bimetallic thermal-switch type fire-detection (single loop) system are heat sensitive units that complete circuits at a certain temp. They are connected in

Answer 25

parallel with each other, but in series with the indicator lights

Question 26

On a periodic check of fire extinguishers, the pressure was not between minimum and maximum limits. What procedure should be followed?

Answer 26

Replace the extinguisher container

Question 27

In some fire-extinguisher systems evidence that the system has been intentionally discharged is indicated by the absence of a

Answer 27

yellow disk on the side of the fuselage

Question 28

If a fire extinguisher cartridge is removed from a discharge valve for any reason, it should be

Answer 28

used only on the orginal discharge valve assembly

Question 29

Which of the following are fire precautions which must be observed when working in an oxygen system?

Answer 29

Display “No smoking” placards, provide adequate firefighting equipment, keep all tools and oxygen servicing equipment free from oil and grease and avoid checking aircraft radio or electrical systems

Question 30

Which fire extinguishing agent is considered to be at least toxic?

Answer 30

Bromotrifluoromethane (Halon 1301)

Question 31

Which fire extinguishing agent has less chance of reflash?

Answer 31

HALON 1211

Question 32

Maintenance of fire detection systems include the

Answer 32

replacement of damaged sensing elements

Question 33

A squib, as used in a fire protection system is a

Answer 33

device for causing the fire extinguishing agent to be released

Question 34

How much water is allowed in a US gal of turbin fuel?

Answer 34

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