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A&P Airframe Oral Practice Questions > Fire Protection Systems > Flashcards

Flashcards in Fire Protection Systems Deck (23)
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1
Q
  1. In what area of an aircraft would you find carbon monoxide detectors?
A

Cockpits & cabin

2
Q
  1. What color does a CO detector change to when carbon monoxide fumes are present?
A

Green, gray, or black

3
Q
  1. What are two types of smoke detectors?
A

Photoelectric & visual

4
Q
  1. Where are smoke detectors use in aircraft?
A

Baggage compartment & lavatory

5
Q
  1. How are thermal switches wired in thermal switch fire detection system?
A

Parallel with each other & in series with warning lights

6
Q
  1. Describe the operating principle of a thermal switch fire detection system.
A

One or more lights, thermal switch when hits a certain temp illuminates the lights

7
Q
  1. Describe the operating principle of a continuous loop fire detection system.
A

One or more wires imbedded in ceramic core inside conductive tube. When heats up it ceramic core is less resistant allowing current though illuminating the light

8
Q
  1. How does a thermocouple fire detection system differ from the thermal switch system?
A

Thermocouple depends on rate of temperature rise

9
Q
  1. What are two types of fire extinguishing systems?
A

High rate discharge system uses Halon
Conventional fire system use carbon dioxide

10
Q
  1. What type extinguishing agent is usually found in a high rate discharge system?
A

Halon

11
Q
  1. What type extinguishing agent is usually associated with a conventional type extinguishing system?
A

CO2

12
Q
  1. What is the purpose of the yellow disc in CO2 fire extinguishing system?
A

Indicates which bottle has been discharged

13
Q
  1. How can you determine the charge of a CO2 extinguisher?
A

Weight it

14
Q
  1. In a turbine engine Freon (halon) fire extinguishing system, how are bottles discharged?
A

Explosive discharge cartridge detonated electrically, breaking a disc

15
Q
  1. How is a Freon (halon) fire extinguishing system protected from temperature rises more than set limits?
A

Equipped with thermal fuse, once melted it discharges

16
Q
  1. How does ambient temperature affect the pressure reading on a fire extinguisher?
A

Low temps - decrease absolute pressure
High temps- increase absolute pressure

17
Q
  1. What type of extinguisher is recommended for brake lines?
A

Dry powder

18
Q
  1. How can you determine the service life of a fire extinguisher discharge cartridge?
A

Manufactures date on cartridge, service life hours below a predetermined temperature

19
Q
  1. What type of hand held fire extinguishers are available of or extinguishing interior aircraft fires?
A

Water
CO2
Dry chemical

20
Q
  1. What type of fire detection system gives a more complete coverage of a fire hazard?
A

Continuous loop detector system

21
Q
  1. Name the different class of fires.
A

A- combustible materials
B- combustible liquids
C- Eletrical
D- Metal

22
Q
  1. How does a photoelectric smoke detector work?
A

Smoke particles block receptor from light

23
Q
  1. How would you determine when the next hydrostatic test is due on a portable fire bottle?
A

DOT information on bottle, 5 years from last date