Extinguishing
What is the proper fire-extinguishing agent to use on an aircraft brake fire?
Dry powder chemical
What is the fire detection system that uses a single wire surrounded by a continuous string of ceramic beads in a tube?
The Fenwal system
What extinguishing agent should be used for an electrical fire?
Carbon dioxide
In what area of an aircraft would you find a carbon monoxide detector?
In the Cockpit and/or cabin
What classification is a fuel or oil fire?
Class B
When may a carbon dioxide (CO2) hand-held fire extinguisher may be used on an electrical fire?
When the Horn is nonmetallic
Which detector is not used to detect fires in a reciprocating engine nacelle?
Smoke detectors
What class fire is an energized electrical fire?
Class C
How are Smoke detection instruments are classified by?
Their method of Detection
What is the most satisfactory extinguishing agent used for a intake or tail pipe fire?
Carbon dioxide
What are the types of fire-extinguishing agents used for aircraft interior fires?
Water, carbon dioxide, dry chemical, and halogenated hydrocarbons.
What effect does water have on a class D fire?
It will cause the fire to burn more violently and can cause explosions
What is the fire detection system that uses two wires imbedded in a ceramic core within a tube?
The KIDDE system
When are light refraction smoke detectors activated?
When the detector senses light reflected from smoke particles passing through a chamber
What is the function of a fire detection system?
To activate a warning device in the event of a powerplant fire.
What is the safest fire-extinguishing agent to use from a stand point of toxicity and corrosion?
bromotrifluoromethane
When used in fire-detection systems having a single indicator light, how are thermal switches wired?
Parallel with each other and in series with the light.
How is the fire-extinguishing agent distributed in the engine section?
Spray nozzles and perforated tubing.
The thermal couple fire warning system is activated by what?
Rate-of-temperature rise
How does carbon dioxide extinguish a fire?
Contact with the air converts the liquid into snow and gas which smother the flame
In some fire-extinguishing systems, evidence that the system has been intentionally discharged is indicated by the absence of what?
A yellow disk on the side of the fuselage
When air samples contain carbon monoxide, portable carbon monoxide detectors containing yellow silica will turn what color?
Green
Smoke detectors which use a measurement of light transmissibility in the air are called what?
Photoelectric devices
Smoke in the cargo and/or baggage compartment of an aircraft is commonly detected by which instrument?
Photoelectric cell
What does maintenance of the fire detection systems include?
Replacement of damaged sensing elements